MTS-3000 SERIES - User Equipuserequip.com/files/specs/5307/3000.pdfTABLE OF CONTENTS MTS-3000 SERIES...

Manta Test Systems Incorporated4060B Sladeview Crescent, Unit #1

Mississauga, Ontario, L5L 5Y5, CanadaTel: +1(905) 828-6469 Fax: +1(905) 828-6850

e-mail: [email protected] Internet: http://www.mantatest.com

MTS-3000 SERIESMODULAR TEST SYSTEM

OPERATION AND REFERENCE MANUAL

First EditionMarch 2001

MTS-3000 Modular Test System Operation and Reference Manual

All rights reserved by Manta Test Systems Incorporated. No part of this publication may be reproduced ordistributed in any form or by any means without the permission of Manta Test Systems Incorporated.

The information and specifications contained within from Manta Test Systems are believed to be accurateand reliable at the time of printing. However, because of the nature of this product, specifications shown inthis manual are subject to change without notice.

The features and capabilities described herein reflect those available in the following firmware versions:

• MTS-3000: 2.0• MTS-3010: 1.1• MTS-3020: 1.1• MTS-3030: 2.0• MTS-3040: 2.0• MTS-3060: 2.0

March 2001.

Document ID#: CU M004 01A

Powertest™ is a trademark of Manta Test Systems Inc.

Manta Test Systems Incorporated4060B Sladeview Crescent, Unit #1

Mississauga, Ontario, L5L 5Y5, CanadaTel: +1(905) 828-6469 Fax: +1(905) 828-6850

e-mail: [email protected] Internet: http://www.mantatest.comToll-free technical support (U.S.A & Canada): 1-800-233-8031

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Section 1Introduction

1.1 DISTINCTIVE CHARACTERISTICS .........................................................1-11.2 GENERAL DESCRIPTION..........................................................................1-11.3 APPLICATIONS ...........................................................................................1-1.3.1 Standard Applications..............................................................................11.4 TERMINOLOGY .........................................................................................1-21.4.1 AC Current Module (ACI).......................................................................1-21.4.2 AC Voltage Module (ACV).....................................................................1-21.4.3 Control Module (CM)..............................................................................1-21.4.4 Device Under Test (DUT) .......................................................................1-1.4.5 Dynamic Fault Mode ...............................................................................1-1.4.6 Dynamic Relay Testing ...........................................................................1-1.4.7 MTS .........................................................................................................11.4.8 On Panel Testing......................................................................................11.4.9 Programming Mode .................................................................................11.4.10 Static Relay Testing .................................................................................11.4.11 Test Mode ................................................................................................11.4.12 V/I Module (VI).......................................................................................1-31.4.13 WFG Module ...........................................................................................11.5 SAFETY CONSIDERATIONS.....................................................................1-31.6 TECHNICAL CONSIDERATIONS .............................................................1-41.7 TECHNICAL SUPPORT ..............................................................................1-4

Section 2Specifications

2.1 INPUTS .........................................................................................................22.2 OUTPUTS .....................................................................................................22.2.1 MTS-3010 Digital I/O Module (Optional) ..............................................2-12.2.2 AC Currents: MTS-3060 AC Current Module ........................................2-12.2.3 AC Voltage and Current: MTS-3030 AC Voltage/Current Module........2-22.2.4 Output frequency .....................................................................................22.2.5 Harmonics................................................................................................22.2.6 Phase control............................................................................................22.2.7 DC Voltage: MTS-3020 DC Voltage Module .........................................2-22.2.8 DC Current: Current Source option .........................................................2-2.2.9 MTS-3010 Digital I/O Module (Optional) ..............................................2-22.3 METERING...................................................................................................2-2.3.1 Time measurement...................................................................................22.3.2 Frequency measurement ..........................................................................22.4 STATIC/DYNAMIC TESTING CAPABILITIES........................................2-32.5 OPTIONS.......................................................................................................22.5.1 System Options ........................................................................................22.5.2 AC Voltage Module Options ...................................................................2-

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2.5.3 AC Current Module Options....................................................................2-2.5.4 AC Voltage/Current Module Options......................................................2-42.6 PHYSICAL CHARACTERISTICS ..............................................................2-42.6.1 Minimum Configuration ..........................................................................2-42.6.2 Control Module........................................................................................2-2.6.3 AC Voltage Module.................................................................................2-2.6.4 AC Current Module .................................................................................2-2.6.5 AC Voltage/Current Module ...................................................................2-2.6.6 Three Phase System: Control Module, AC Voltage and AC Current

Modules ...................................................................................................2-

Section 3Operation Summary

3.1 FRONT PANEL LAYOUT ...........................................................................3-13.1.1 MTS-3000 Control Module, CM.............................................................3-13.1.2 MTS-3010 Digital I/O Module ................................................................3-43.1.3 MTS-3010 DC Voltage Source................................................................3-3.1.4 MTS-3040 AC Voltage Module ..............................................................3-53.2 REAR PANEL LAYOUT .............................................................................3-73.2.1 MTS-3000 Control Module Rear Panel...................................................3-3.3 BASIC APPLICATIONS ..............................................................................3-93.3.1 Getting Started .........................................................................................33.3.2 Basic AC Voltage, Current and Phase Angle Output ..............................3-123.3.3 Frequency Output ....................................................................................33.3.3.1 BASIC FREQUENCY OUTPUT. ...................................................3-13.3.3.2 ADVANCED FREQUENCY OUTPUT. .........................................3-153.3.4 DC Voltage ..............................................................................................33.3.4.1 BASIC DC VOLTAGE OUTPUT. .................................................3-153.3.4.2 ADVANCED DC VOLTAGE OUTPUT. .......................................3-163.3.5 DC Current Output...................................................................................33.3.6 High AC Voltage Output .........................................................................3-3.3.7 High AC Current Output..........................................................................3-3.3.8 Overcurrent Relay Test ............................................................................33.3.8.1 SETUP. ............................................................................................33.3.8.2 MINIMUM PICKUP TEST. ............................................................3-193.3.8.3 INVERSE-TIME CHARACTERISTIC TEST. ...............................3-193.3.8.4 INSTANTANEOUS ELEMENT TEST. .........................................3-203.3.8.5 TARGET/SEAL-IN TEST. .............................................................3-23.3.9 Differential Relay - Three Terminal Type ..............................................3-223.3.9.1 PICKUP TEST. ................................................................................3-3.3.9.2 OPERATE TIME TEST. .................................................................3-23.3.9.3 HARMONIC RESTRAINT TEST. ................................................3-233.3.9.4 INSTANTANEOUS TEST. ............................................................3-23.3.9.5 TARGET TEST. .............................................................................3-3.3.10 Differential Relay - Independent Coil Type ............................................3-23.3.10.1 SLOPE TEST. ..................................................................................3

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3.3.10.2 OPERATE TIME TEST. .................................................................3-23.3.10.3 HARMONIC RESTRAINT TEST. .................................................3-273.3.10.4 INSTANTANEOUS TEST. .............................................................3-23.3.10.5 TARGET TEST. ..............................................................................3-3.3.11 Voltage Relay Test...................................................................................33.3.11.1 SETUP. ...........................................................................................33.3.11.2 MINIMUM PICKUP TEST. ...........................................................3-293.3.11.3 TIMING TEST. ..............................................................................3-23.3.11.4 TARGET/SEAL-IN TEST. .............................................................3-33.3.12 Frequency Relay Test ..............................................................................33.3.12.1 SETUP. ............................................................................................33.3.12.2 PICKUP TEST. ................................................................................3-3.3.12.3 TIMING TEST. ...............................................................................3-33.3.12.4 TARGET/SEAL-IN TEST. .............................................................3-33.3.12.5 UNDERVOLTAGE INHIBIT TEST. .............................................3-323.3.13 Synchronizing/Reclosing or Synchrocheck Relay...................................3-3.3.13.1 PHASE ANGLE LIMIT TEST. .......................................................3-333.3.13.2 VOLTAGE LIMIT TEST. ...............................................................3-333.3.13.3 SLIP FREQUENCY LIMIT TEST. .................................................3-33.3.14 Single Phase Impedance Relay or Directional Overcurrent Relay Test ..33.3.14.1 SETUP. ............................................................................................33.3.14.2 REACH/MINIMUM PICKUP TEST. ..............................................3-353.3.14.3 MTA TEST. .....................................................................................3-3.3.14.4 OPERATE TIME TEST. .................................................................3-33.3.15 Three Phase Impedance Relay Test .........................................................3.3.15.1 PREPARATION. ............................................................................3-3.3.15.2 REACH TEST. ...............................................................................3-3.3.15.3 MTA TEST. .....................................................................................3-3.3.15.4 OPERATE TIME TEST. .................................................................3-43.3.16 Ground Fault Overvoltage Relay .............................................................33.3.16.1 SETUP. ...........................................................................................33.3.16.2 OVERVOLTAGE PICKUP TEST. ................................................3-43.3.16.3 OVERVOLTAGE TIMING TEST. ................................................3-423.3.16.4 UNDERVOLTAGE INHIBIT TEST. ............................................3-423.3.17 DC Auxilliary/Time-Delay Relay Test....................................................3-43.3.17.1 PICKUP TEST. ...............................................................................3-3.3.17.2 TIMING TEST. ..............................................................................3-4

Section 4Detailed Operation

4.1 FAULT STATES...........................................................................................4-14.1.1 Prefault State............................................................................................44.1.2 Fault State ................................................................................................44.1.3 Postfault State ..........................................................................................44.2 CHARACTERISTICS OF FAULT STATES ...............................................4-14.3 OPERATION MODE - STATIC VS. DYNAMIC .......................................4-2

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4.3.1 Static Fault Mode.....................................................................................44.3.2 Dynamic Fault Mode ...............................................................................4-4.4 TRIGGER/TIMER OPERATION.................................................................4-44.4.1 External Trigger Inputs ............................................................................4-4.4.2 Trigger Threshold Levels.........................................................................4-4.4.3 Start Trigger (FLT) ..................................................................................4-4.4.4 Stop Trigger (TRIP).................................................................................4-4.4.5 Reset.........................................................................................................44.4.6 Timer Start ...............................................................................................44.4.7 Two-Wire Pulse Timing ..........................................................................4-54.4.8 Timing in Cycles......................................................................................4-4.4.9 Testing SCR Output Type Relays............................................................44.5 CURRENT MODES......................................................................................4-4.5.1 Current Range ..........................................................................................44.5.2 HARMONIC Current Mode ....................................................................4-74.5.2.1 DEFINITION OF PERCENTAGE HARMONIC. ..........................4-84.5.2.2 SPECIAL NOTES. ..........................................................................4-8

Section 5Advanced Operation

5.1 MENU OPERATION....................................................................................5-15.1.1 Basic Usage..............................................................................................55.1.1.1 ACTIVATING THE MAIN MENU. ..............................................5-15.1.1.2 SELECTING MENU ITEMS. ........................................................5-15.1.1.3 MENU NAVIGATION. .................................................................5-15.2 SETTINGS.....................................................................................................55.2.1 Reset to Defaults......................................................................................55.2.2 Fault Type................................................................................................55.2.2.1 VECTOR MODE. ...........................................................................5-55.2.2.2 Φ−N,Φ−Φ, 3Φ MODE. ............................................................................5-55.2.3 Harmonics................................................................................................55.2.3.1 HARMONICS OPTIONS. ..............................................................5-65.2.4 Parallel Current ........................................................................................55.2.5 Ramps ......................................................................................................55.2.5.1 FREQUENCY RAMPING. ............................................................5-85.2.5.2 PHASE RAMPING. .......................................................................5-85.2.5.3 VOLTAGE RAMPING. .................................................................5-85.2.5.4 CURRENT RAMPING. .................................................................5-85.2.6 Frequency 2..............................................................................................55.2.7 Breaker Times (Bkr Times)......................................................................5-95.2.8 AC Current Range (ACI Range)..............................................................5-95.2.9 Reclose.....................................................................................................55.2.10 Fault Incidence Angle (FIA) ....................................................................5-105.2.11 Maximum Fault Duration (Max Flt Dur) ................................................5-105.2.12 Display Options .......................................................................................55.2.12.1 DEFAULT DISPLAY (Hz & Φ) . ..................................................5-10

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5.2.12.2 SLOPE. ...........................................................................................55.2.12.3 IMPEDANCE. ................................................................................5-5.2.12.4 FREQUENCY & V/Hz. ..................................................................5-15.2.12.5 FREQUENCY & SLIP. ..................................................................5-15.3 QUICK TEST ................................................................................................5-5.4 PREFERENCES ............................................................................................55.4.1 Button Tone .............................................................................................55.4.2 VI Module #1...........................................................................................5-5.4.3 VI Module #2...........................................................................................5-5.4.4 COM 1 RS-232 ........................................................................................55.4.5 COM 2 RS-232 ........................................................................................55.4.6 Assign Ports .............................................................................................55.4.7 LCD Contrast ...........................................................................................55.5 INDEX...........................................................................................................5-5.6 OTHER ..........................................................................................................55.6.1 Version.....................................................................................................55.6.2 Calibration ...............................................................................................55.6.3 Printer Test...............................................................................................55.6.4 Diagnostics...............................................................................................55.7 DIGITAL I/O.................................................................................................5-25.7.1 Input Channel 1 (I/P Chan 1) ..................................................................5-205.7.1.1 TRIP (ie STOP). ..............................................................................5-205.7.1.2 EXTERNAL START (FLT (ie STOP)). .........................................5-205.7.1.3 Pulse Timing. ..................................................................................5-25.7.1.4 Reset. ...............................................................................................5-25.7.1.5 Reclose. ...........................................................................................5-25.7.1.6 Foot Switch. ....................................................................................5-25.7.1.7 Off. ..................................................................................................5-25.7.2 Input Channel 2 (I/P Chan 2) ................................................................5-215.7.3 Input Debounce (I/P Debounce) .............................................................5-215.7.4 DC Current (IDC) ...................................................................................5-25.7.5 Output Channel 1 (O/P Chan 1) .............................................................5-215.7.5.1 FAULT (NO). ..................................................................................5-25.7.5.2 /FAULT (NC). .................................................................................5-25.7.5.3 Breaker Open (BKR OPEN: 52B). ..................................................5-215.7.5.4 PERMISSIVE. .................................................................................5-25.7.5.5 UNBLOCK. .....................................................................................5-25.7.5.6 Off. ..................................................................................................5-25.7.6 Output Delay (O/P Delay) ......................................................................5-225.7.7 Version.....................................................................................................5-2

Section 6QuickTest

6.1 ADVANTAGES OF QUICKTEST...............................................................6-16.2 QUICKTEST ALGORITHMS......................................................................6-1

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6.3 QUICKTEST TERMINOLOGY AND ABBREVIATIONS ........................6-26.4 SUMMARY OF OPERATION.....................................................................6-26.5 TIMED 1Φ OVERCURRENT TEST..............................................................6-46.5.1 Test Description.......................................................................................66.5.2 Example 1Φ Test Descriptions ................................................................6-46.6 INSTANTANEOUS 1Φ OVERCURRENT TEST ......................................6-66.6.1 Test Description.......................................................................................66.6.2 Example 1Φ Instantaneous Over Current (50).........................................6-66.7 TIMED 1Φ UNDER VOLTAGE TEST........................................................6-86.7.1 Test Description.......................................................................................66.7.2 Example 1Φ Timed Under Voltage (27)..................................................6-86.8 INSTANTANEOUS 1Φ UNDER VOLTAGE .............................................6-106.8.1 Test Description.......................................................................................66.8.2 Example 1Φ Instantaneous Under Voltage (27) ......................................6-16.9 TIMED 1Φ OVER VOLTAGE TEST ..........................................................6-126.9.1 Test Description.......................................................................................66.9.2 Example 1Φ Timed Over Voltage (59)....................................................6-126.10 INSTANTANEOUS 1Φ OVER VOLTAGE TEST .....................................6-146.10.1 Test Description.......................................................................................66.10.2 Example 1Φ Instantaneous Over Voltage (59) ........................................6-16.11 TRANSFORMER DIFFERENTIAL TEST. ................................................6-166.11.1 Test Description.......................................................................................66.11.2 Example Transformer Differential...........................................................6-

Section 7RS-232C Interface

7.1 RS-232C CONNECTION..............................................................................7-7.1.1 Interface Specifications............................................................................77.1.2 COM 1 RS232C Port ...............................................................................77.1.2.1 COM 1 RS-232C CONNECTOR PIN ASSIGNMENTS. ..............7-17.1.3 COM 2 RS232C Port ...............................................................................77.1.3.1 COM 1 RS-232C CONNECTOR PIN ASSIGNMENTS. ..............7-27.1.4 Baud Rate Selection.................................................................................77.1.4.1 COM 1 BAUD RATE. ....................................................................7-27.1.4.2 COM 2 BAUD RATE. ....................................................................7-27.1.5 XON/XOFF Handshaking .......................................................................7-7.2 COMMAND DESCRIPTIONS.....................................................................7-37.2.1 Control Mode Programming....................................................................7-7.2.2 Fault State Control ...................................................................................77.2.3 External Data Mode .................................................................................77.2.4 Voltage Programming..............................................................................77.2.4.1 COMMANDS. ................................................................................7-57.2.4.2 EXAMPLES. ..................................................................................7-7.2.5 Current Control ........................................................................................77.2.6 Phase Control ...........................................................................................77.2.6.1 COMMANDS. ................................................................................7-7

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7.2.6.2 EXAMPLES. ..................................................................................7-7.2.7 Frequency Control/Programming ............................................................7-7.2.7.1 COMMANDS. ................................................................................7-87.2.7.2 EXAMPLES. ..................................................................................7-7.2.8 RS-232 Control ........................................................................................77.2.9 Print Commands ......................................................................................77.2.10 Other Commands .....................................................................................77.2.11 DC Voltage Control .................................................................................7-7.2.12 Digital Input/Output and DC Current Control .........................................7-17.3 PROGRAMMING HINTS ............................................................................7-1

APPENDIX AALPHABETICAL RS-232 COMMAND SET

.......................................................................................................................A

APPENDIX BPOWERSCOPE PROGRAM

B.1 INTRODUCTION .........................................................................................B-B.1.1 Features....................................................................................................BB.1.2 Operation Instructions..............................................................................BB.1.3 Button Bar ...............................................................................................BB.1.4 Configuring the Comm Port ....................................................................B-B.1.5 System Configuration ..............................................................................BB.1.6 Operating Modes......................................................................................BB.1.6.1 REAL TIME MODE. .....................................................................B-3D.1.6.2 DEMO MODE. ...............................................................................B-B.1.7 Displaying Phasor & Impedance Diagrams.............................................BB.2 PHASORS WINDOW...................................................................................B-B.3 SYMMETRICAL COMPONENTS ..............................................................B-5B.3.1 Current Components Window .................................................................B-B.3.2 Voltage Components Window.................................................................B-B.3.3 Interpretation of Symmetrical Components Displays..............................B-B.4 IMPEDANCE WINDOW..............................................................................B-8B.4.1 Using the Impedance Window.................................................................BB.4.2 Defining & Displaying Theoretical Relay Characteristics ......................B-9B.5 POWER WINDOW.......................................................................................B-B.6 SPECIAL NOTES .........................................................................................B-

APPENDIX CALPHABETICAL RS-232 COMMAND SUMMARY

C.1 USER ERRORS - INAPPROPRIATE BUTTON PRESSING .....................C-1C.2 HARDWARE ALARMS...............................................................................C-2C.3 SOFTWARE ALARMS ................................................................................C-4

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LIST OF ILLUSTRATIONS

Figure Title PagNumber Number

3.1 CONTROL MODULE PANEL.....................................................................3-1 3.2 DIGITAL I/O PANEL ...................................................................................3-4 3.3 DC VOLTAGE PANEL ................................................................................3-5

3.4 AC VOLTAGE PANEL ................................................................................3-63.5 CONTROL MODULE REAR PANEL.........................................................3-73.6 TYPICAL THREE PHASE SYSTEM ..........................................................3-93.7 DISPLAY MESSAGES.................................................................................3-13.8 TEST CONNECTIONS.................................................................................3-3.9 BASIC AC ADJUSTMENTS........................................................................3-13.10 FREQUENCY ADJUST................................................................................3-3.11 DC VOLTAGE ADJUST ..............................................................................3-13.12 DC CURRENT ADJUST ..............................................................................3-3.13 AC VOLTAGE VECTOR.............................................................................3-13.14 AC CURRENT VECTORS ...........................................................................3-3.15 OVERCURRENT RELAY TEST .................................................................3-13.16 THREE TERMINAL DIFFERENTIAL RELAY TEST...............................3-223.17 INDEPENDENT COIL DIFFERENTIAL RELAY TEST ...........................3-253.18 VOLTAGE RELAY TEST............................................................................3-23.19 SYNCHRONIZING RELAY TEST..............................................................3-33.20 IMPEDANCE RELAY TEST .......................................................................3-33.21 THREE PHASE IMPEDANCE RELAY TEST............................................3-373.22 IMPEDANCE RELAY TEST DISPLAY .....................................................3-383.23 GROUND OVERVOLTAGE RELAY TEST...............................................3-413.24 DC RELAY PICKUP TEST..........................................................................3-43.25 DC RELAY TIMING TEST..........................................................................3-4

4.1 EXAMPLE OUTPUT SEQUENCE (PREFAULT OFF)..............................4-24.2 EXAMPLE OUTPUT SEQUENCE (PREFAULT ON) ...............................4-24.3 FAULT STATE DIAGRAM FOR STATIC MODE ....................................4-34.4 FAULT STATE DIAGRAM FOR DYNAMIC MODE ...............................4-34.5 TEST CONNECTIONS FOR SCR OUTPUT TYPE RELAY .....................4-64.6 DIFFERENTIAL RELAY HARMONIC RESTRAINT TESTING .............4-7

5.1 ROOT MENU................................................................................................5-5.2 MENU TREE SETTINGS.............................................................................5-45.3 PARALLEL MENU ......................................................................................5-75.4 PARALLEL CONNECTION........................................................................5-75.5 MENU TREE: PREFERENCES ...................................................................5-5.6 MENU TREE: INDEX/OTHER....................................................................5-15.7 MENU TREE: DIGITAL I/O ........................................................................5-19

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INTRODUCTION - Section 1

INTRODUCTION

1.1 DISTINCTIVE CHARACTERISTICS

1.2 GENERAL DESCRIPTION

The Manta MTS-3000 is a flexible modular test system, geared particularly towards protective relaytesting, but configurable for numerous other applications requiring AC and/or DC voltage and/or currentsources.

Systems can be as simple as a single phase AC current source, or as complex as a full three phase ACvoltage and current source with DC voltage and current, multi-channel digital input operation sensing anddigital output control, and accurate timing measurement capability. Multi-system control, with one systemfunctioning as the master to one or more slave units, is also possible. An economically priced system maybe configured with only the minimum number of features required for today’s applications, with theflexibili ty to expand as tomorrow’s requirements and budgets dictate.

The MTS-3000 is specificall y engineered for a short learning curve. A ‘Vector Control’ mode providesfor individual amplitude and phase adjustment of all AC voltage and current outputs, with the addedconvenience of numeric keypad input for quick absolute control settings, or rotary knob control ofincremental changes to settings. Additional ‘ intelligent control’ modes automate much of the setuprequired for three phase test applications, and provide single-input control of multiple parameters asfound, for example, during phase-to-phase or three phase fault simulations.

A unique feature of the equipment is its ability to automatically test many protective relays using built-inautomated test routines. This permits fast, consistent testing for routine work that may not justify theexpense and learning curve necessary for full computer based testing. Field reports can be generated onthe spot using a portable printer.

• Unique expandable modular design.

• Economical.

• Individual display and control of all voltages, currents and phase angles.

• Built in “Quick-Test” functions for most common relay elements.

• Output test reports directly to a printer.

• On- or Off-line programming via keypad and/or rotary knob.

• Many productivi ty enhancing features.

• Static and dynamic testing.

• Compact and rugged.

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An MTS-3000 System consists of a Control Module (CM), and one or more AC output modules. modules connect together to form a stack, with the control module at the top.

An AC Current Module (ACI), an AC Voltage Module (ACV), or an AC Voltage/Current Module (ACV/I) may be easily added or removed from a stack to configure the system to your needs. All the reelectrical connections are made when a module is added to the stack. The CM recognizes and configuresthe system for all the modules in a stack on power up. This "plug and play" capability allows modube added or removed at any time.

1.3 APPLICATIONS

1.3.1 Standard Applications

• Static and dynamic testing of virtually all protective relays.• Calibration and verification of V, I, W, Z, and Frequency transducers.• Testing of fault recorders, fault locators, and automatic voltage regulators.• Testing and calibration of metering systems.

1.4 TERMINOLOGY

The following terminology is used throughout this user’s guide:

1.4.1 AC Current Module (ACI)

The AC current module or ACI refers to the MTS-3060 module. This module can have from one toAC current channels.

1.4.2 AC Voltage Module (ACV)

The AC voltage module or ACV refers to the MTS-3040 module. This module can have from one to thrAC voltage channels.

1.4.3 Control Module (CM)

Control module or CM refers to the upper most module that makes up the MTS stack.

1.4.4 Device Under Test (DUT)

DUT refers to the protective relay or similar device being tested.

1.4.5 Dynamic Fault Mode

This mode refers to the fault mode that’s used when performing operate time tests. See Section 4.3.2 fordetailed explanation.

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1.4.6 Dynamic Relay Testing

Dynamic relay testing refers to testing of relays using instantaneous steps and/or ramping of voltage andcurrent inputs. To closely simulate the conditions the device sees in service, the voltages and currents aretypically stepped from a nominal, prefault level, to a predetermined fault level.

1.4.7 MTS

The "modular test system" MTS-3000 and its various optional modules.

1.4.8 On Panel Testing

This refers to testing of relays and relay systems while they’ re installed on panels or equipment racks.This involves injecting voltages or currents directly into the panel to test the complete system response,and to verify the correct input/output wiring and phasing of the panel.

1.4.9 Programming Mode

Programming mode is used to preset AC output parameters for either prefault or fault state. The ACoutputs are disabled while the system is in programming mode.

1.4.10 Static Relay Testing

This refers to relay testing by slowly varying inputs to accurately locate pickup points and to performrepeatable measurements.

1.4.11 Test Mode

The AC outputs are enabled while in test mode.

1.4.12 V/I Mo dule (VI)

The V/I module or VI refers to the MTS-3030 module. This module can be ordered with either one or twoconvertable AC output channels. Each channel can operate in either voltage mode (0-150 V), or currentmode (0-25 A).

1.4.13 WFG Module

WFG refers to waveform generation modules such as the MTS-3030, MTS-3040, and MTS-3060.

1.5 SAFETY CONSIDERATIONS

The MTS-3000 can generate high levels of current and voltage. Incorrect usage may cause personal injuryand/or damage to the instrument. The user must be qualified to work safely in the intended applicationenvironment of this instrument. Non-adherence to the following minimum requirements constitutesmisuse of the Modular Test System, MTS, and the manufacturer accepts no liability for damages arisingfrom such misuse.

MTS-3000 OPERATION AND REFERENCE MANUAL 1-3

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The instrument case must always be effectively grounded. The rear panel grounding stud of the Module, CM, must be connected by a minimum 12-gauge wire to a known secure ground. This groin addition to the power cord ground.

All leads and connectors must be in good condition and rated for the voltage and current carryingrequirements. Current outputs must be securely connected with a minimum 12 gauge leads with terminals.

MTS outputs must not be connected to live outputs or to live equipment. All outputs must be turnbefore making any changes to the connections. Never exceed the following maximum ratings:(a) 300V rms to ground on any input, power or control.(b) 300VDC differential to the contact (external trigger) inputs.(c) 5Arms or 5A DC through any contact output.

All rear panel fuses must contain properly rated fuses.

1.6 TECHNICAL CONSIDERATIONS

The optional DC current source, when enabled, will source up to 2.5A of DC current out of the two leftterminals of Input 1 of the DIGITAL I/O module. The low impedance nature of this source could prothe necessary trip path to inadvertently trip an auxillary relay or circuit breaker. The DC current only should be used when the protective relays trip output circuit is properly isolated.

1.7 TECHNICAL SUPPORT

The design of the MTS reflects decades of experience in the electric power industry. Howevrecognize that situations may be encountered that were not considered during its design. We encourayou to forward any questions, problems or suggestions to us either through the representative fromyou purchased your system, or directly to us via the phone, fax or e-mail numbers found on thcover.

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SPECIFICATIONS - Section 2

SPECIFICATIONS

NOTE: Al l specifications are subject to change. All AC quantiti es are RMS values, except asotherwise noted.

Power outputs are specified for nominal 120VAC/60Hz or 240VAC/50Hz power input,and 25°C ambient operating temperature.

For some configurations, the 15A / 7.5A rating may be exceeded if all outputs are atfull power. Derating applies for lower input power voltages and higher ambienttemperatures. For all current outputs, maximum obtainable current will vary inverselywith load impedance. For extended operation at high power output levels, ensureadequate cooling (i.e. don’ t obstruct cooling intakes or exhaust outlets).

2.1 INPUTS

110-130 VAC @ 15A, Single phase, 47-63 Hz, or210-250 VAC @ 7.5A, Single phase, 47-63 Hz (Future)

2.1.1 MTS-3010 Digital I/O Module (Optional)

NC or NO wet/dry contact inputs, Start/Stop trigger inputs for fault ini tiation/terminationProgrammable contact de-bounce delay, 0.1 - 999.9 msec, 0.1 msec resolution300VDC/AC maximum, fully isolated (12V threshold level, 52K ohms impedance minimum)

2.2 OUTPUTS

2.2.1 AC Voltages: MTS-3040 AC Voltage M odule

One to three direct coupled outputs depending on configuration, connected wye (common neutral)0-150V rms phase to neutral, direct coupled100 VA per phase maximum @ 70V Φ-N output, P.F.=1.0125 VA per phase maximum @ 150V Φ-N output, P.F.=1.0Setting resolution 0.01V:Accuracy greater of 0.25% of setting or 0.1% of full scaleFully short circuit proof and thermal overload protected

2.2.2 AC Cur rents: MTS-3060 AC Current M odule

0-25A rms, 250 VA maximum per channel, direct coupled12A rms continuousThree-phase wye current: 12A rms continuous per channel25A rms per channel into 0.25 ohm loadSingle phase current, three channels in parallel, high current range: 0-75A rms, 300 VA, 30% duty cycleSingle phase current, three channels in parallel, high voltage range: 0-35A rms, 600 VA, 30% duty cycleFully open and short circuit proof and thermal overload-protectedSetting resolution 0.001 Amps: Accuracy greater of 0.25% of setting, or 0.1% of full scale

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2.2.3 AC Voltage and Current: M TS-3030 AC Voltage/Cur rent Module

One or two outputs, depending on configuration, connected common neutral0-150V rms phase to neutral, direct coupled, specifications as for MTS-3040 module above0-25A rms, 120 VA maximum per channel, specifications as for MTS-3060 module aboveCan be configured for any voltage and/or current combination of two output channelsFully open and short circuit proof and thermal overload-protected

2.2.4 Output frequency

Power Line, frequency and phase lockedVariable: 8.000 - 99.999 Hz (0.001 Hz resolution, 0.01% accuracy)

100 - 499.99 Hz (0.01 Hz resolution, 0.02% accuracy)500 - 1000 Hz (0.1 Hz resolution, 0.02% accuracy)Two independently variable frequencies are available.

2.2.5 Harmonics

Harmonic mode for harmonic restraint testingSingle harmonic, 2nd through 10th, maximum harmonic frequency = 1000 HzHarmonic amplitude 0 - 50% of fundamental

2.2.6 Phase contr ol

Phase angle of all AC outputs adjustable from 0 to 360°Setting resolution: 0.1° (Accuracy: 0.5°)

2.2.7 DC Voltage: MTS-3020 DC Voltage M odule

This optional module install s in the Control Module case. DC voltage output 0-300 VDC @ 100W maximumSetting resolution 0.1V: Accuracy greater of 1% of setting or 0.75VCurrent Limit: 2A, fully short circuit proof

2.2.8 DC Cur rent: Cur rent Source option

0-2.5A DC @ 20VA maximumMaximum compliance voltage: 12VSetting resolution: 0.001 AmpsAccuracy: greater of 1% of setting, or 10mACurrent Limit 2.5A, fully open and short circuit proof

2.2.9 MTS-3010 Digital I/O Module (Optional) Programmable auxiliary contact output, fully isolated5A @ 300VAC, 1A @ 125VDC, 0.5A @ 250VDC, 0.35A @ 300VDC resistive loadBreaker signal (52A/52B) simulationPermissive/unblock signal simulation with programmable delay, 0 - 9999.0 msec, 0.1 msec resolution.

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2.3 METERING

2.3.1 Time measurement

Measures interval from either fault initiation or an external start trigger signal0 - 99999 sec, auto-ranging scale0 - 99999 cycles, auto-ranging scaleResolution: 0.1 ms/ 0.1 cyclesAccuracy: ± 0.5ms, ± 1 digitTwo wire pulse timing mode

2.3.2 Frequency measurement

Resolution, 8Hz - 99.999Hz: ± 0.001 HzAccuracy: ± 0.01 HzResolution, 100Hz - 499.99Hz: ± 0.01 Hz Accuracy: ± 0.05 HzResolution, 500Hz - 1000.0Hz: ± 0.1 Hz Accuracy: ± 0.1 Hz

2.4 STATIC/DYNAMIC TESTING CAPABILITIES

Phase to ground, phase to phase and three phase faults (when equipped with sufficient modules)Phase, frequency, voltage and current ramping with adjustable ramp ratesProgrammable auto-reclose time delay and reclose-into-fault eventsProgrammable breaker opening and closing timesFault incidence angle control (point-on-wave)

2.5 OPTIONS

Control Module Options:Option 01 MTS-3010 Programmable Digital I/O Module with trigger channels.Option 02 DC Current Source. Option 01 must be present.Maximum configuration: one per Control Module, two if there’s no DC Voltage Module.Option 03 Digital I/O Expansion. Option 01 must be present (Future).Option 04 MTS-3020 DC Voltage Module.Maximum configuration: one per Control Module.Option 05 240V, 50/60 Hz line input Control Module.

2.5.1 System Options

Option 18 Digital I/O and DC Voltage Test Lead KitOption 19 Additional Operation and Reference ManualOption 20 Additional One Year extended warranty

2.5.2 AC Voltage Module Options

Option 41 240V, 50/60 Hz line input Option 42 2nd AC Voltage ChannelOption 43 3rd AC Voltage ChannelOption 44 AC Voltage Test Lead KitMaximum configuration: three Channels per ACV Module, two Modules per stack



2.5.3 AC Cur rent Module Options

Option 61 240V, 50/60 Hz line input Option 62 2nd AC Current ChannelOption 63 3rd AC Current ChannelOption 64 AC Current Test Lead KitMaximum configuration: three Channels per ACI Module, two Modules per stack.

2.5.4 AC Voltage/Current Module Options

Option 31 240V, 50/60 Hz line input Option 32 2nd AC Current ChannelOption 33 3rd AC Current ChannelOption 34 AC Current Test Lead KitMaximum configuration: two Channels per ACV/I Module, two Modules per stack.

2.6 PHYSICAL CHARACTERISTICS

2.6.1 Mi nimum Configuration

Control Module and one AC Voltage module, one AC Current module, or one AC Voltage/Currentmodule. Modules connect together in a stack, with the Control Module on the top, shipped in a hard shellshipping case with a removable protective front cover.

2.6.2 Control M odule

14 3/4" W x 6 3/4" H x 11 3/8" D (37.5cm W x 17.2cm H x 29.0cm D)Weight: 17.8 lbs. (8.1 kg). Includes MTS-3010, MTS-3020, top and bottom covers.Built-in side carry handles.

2.6.3 AC Voltage Module

14 3/4" W x 6 3/4" H x 11 3/8" D (37.5cm W x 17.2cm H x 29.0cm D)Weight with three Channels: 23.2 lbs (10.5 kg)

2.6.4 AC Cur rent M odule

14 3/4" W x 6 3/4" H x 11 3/8" D (37.5cm W x 17.2cm H x 29.0cm D)Weight with three Channels: 28.8 lbs (13.1 kg)

2.6.5 AC Voltage/Current Module

14 3/4" W x 6 3/4" H x 11 3/8" D (37.5cm W x 17.2cm H x 29.0cm D)Weight with two Channels: 27 lbs (12.2 kg)

2.6.6 Three Phase System: Control M odule, AC Voltage and AC Cur rent Modules

Weight with three voltage and three current channels, top and bottom covers and the protective frontcover 69.8 lbs (31.7 kg)

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OPERATION SUMMARY - Section 3

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OPERATION SUMMARY

3.1 FRONT PANEL LAYOUT

3.1.1 MTS-3000 Control Module, CM

FIGURE 3.1 CONTROL MODULE PANEL

1. ENABLE PUSHBUTTON

This pushbutton enables the AC outputs. If the enable status LED isn’t lit, the outputs are diand there will be no AC current or voltage available from the output terminals of the AC omodules. This is defined as Programming mode.

When the outputs are enabled by pressing this pushbutton, the enable status LED will light, the output channel warning LEDs of all AC output module channels that are equipped with vor current sources. This is defined as Test mode.

2. PREFAULT PUSHBUTTON

This pushbutton selects the Prefault state for off-line programming (ENABLE off) or toggles thePrefault mode on or off (ENABLE on, Test mode). Current status is indicated by the PREFALED.

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• ON - System is in Programming mode, prefault state is selected.

• BLINKING - System is in Test mode, prefault state is selected and active.• OFF - Either the system isn’ t in PREFAULT state or Prefault mode isn’t selected.

3. FAULT PUSHBUTTON

This pushbutton selects Fault state for off-line programming (ENABLE off), or causes the MTS toenter Fault state (ENABLE ON, Test mode).

Momentary operation (<250 msec.) of the pushbutton latches the MTS into Dynamic Fault stateuntil RESET is pressed or the Device Under Test (DUT) operates, as detected by an Input channelon the DIGITAL I/O module. Sustained pressing of the pushbutton maintains the equipment inFault state only as long as it’s held depressed, and trip operations of a DUT will be annunciated,but won’t trip off the outputs.

Current status is indicated by the FAULT LED• ON - System is in Programming mode, FAULT is selected for programming• BLINKING - System is in Test mode, FAULT is selected and active• OFF - System is in either PREFAULT or POSTFAULT state

4. RESET PUSHBUTTON

This pushbutton is pressed to restore the system to Prefault state either following an operation of aDUT (i.e. the system is in Postfault mode), or during a Fault sequence. It clears the timer readingto zero while restoring any frozen AC output readings to normal.

When the TRIP LED above the RESET button is on, it indicates the system is in POSTFAULTstate as a result of a trip (DUT operation) during FAULT state.

5. MODIFY KNOB

This rotary knob can be used to make incremental changes to any currently selected parameter,such as amplitude, phase, or frequency. Clockwise increases the value; counterclockwise decreasesit. Turning it faster makes larger coarser adjustments; slower makes smaller finer adjustments.When performing data entry with the keypad, the knob is disabled until ENTER is pressed. Theknob is also used to scroll through menu items.

6. NUMERIC KEYPAD

These keys are used to enter numeric data, and to modify the currently selected parameter, such asamplitude, phase, or frequency.

7. ENTER KEY

This key is used to signal the end of a numerical entry sequence, and to restore operation of theMODIFY knob.

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8. CANCEL ENTRY KEY

This key is pressed to clear all numbers just entered on the keypad. The BACK pushbuttowill clear a single numeric entry. A second press of CE will restore the previously entered va

9. FUNCTION KEYS

These keys are pressed to select or enable modification of a reading or parameter on the reline of the adjacent four-line liquid crystal display (LCD).

10. BACK PUSHBUTTON

This pushbutton is pressed to back up one level through the menu which appears on the above it, as well as to back up one key entry on the numeric keypad (6). Pressing it during operation will force the display to menu mode and directly restore the user to the last menu accessed.

11. MENU PUSHBUTTON

Pressing this pushbutton toggles on or off an extensive menu which appears on the displayit.

12. HELP PUSHBUTTON

Context sensitive help regarding operation of many of the MTS system’s controls may be caby pressing this pushbutton.

13. POWER PUSHBUTTON

This pushbutton turns on or off the mains power to the Control Module and to any AC omodules connected to the Control Module.

14. ALPHANUMERIC DISPLAY

This Liquid Crystal Display (LCD) provides information on current equipment status, and disnumerous menu options.



3.1.2 MTS-3010 Digital I /O Module

FIGURE 3.2 DIGITAL I/O PANEL 1. OUTPUT CONTACT TERMINALS

By default these contacts are configured, as indicated by the NC/NO symbols shown on the panel,and contact changeover follows Fault mode status. Other modes are programmable via the menu.

2. INPUT SENSING TERMINALS

Operation of a Device Under Test (DUT) may be sensed by these inputs, either a dry or wetcontact operation, or a change in status of an AC/DC voltage. Debounce times on input sensing areprogrammable. These high impedance inputs are galvanicly isolated from one another and fromthe MTS system.

3. SET PUSHBUTTON

Selection of this pushbutton opens menu options on the Control Module display to allowprogramming of options for the inputs and outputs, plus adjustment of the DC Current, if this latteroption is fitted.

4. ON PUSHBUTTON

This pushbutton toggles on or off the optional DC Current output to the two left terminals of Input1. When DCI is enabled by this switch, whenever an external relay contact (in series with a DCcurrent operated target) closes, the programmed DC current will flow through the external circuit.



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5. TONE PUSHBUTTON

This pushbutton toggles on or off the audible indicator associated with the change of state dcircuits monitoring Input 1.

6. OPERATION SENSE LED

This LED illuminates if a change of contact state from NO to NC, or a change in voltage froto on, is sensed by Input 1. It’s particularly useful if the output contact of the relay being tcannot easily be observed, as is often the case with electronic relays.

3.1.3 MTS-3010 DC Voltage Source

FIGURE 3.3 DC VOLTAGE PANEL 1. OUTPUT TERMINALS

Up to 300VDC at 100 W is available here.

2. DC VOLTAGE DISPLAY

The present setting of the DC voltage module is displayed on this LED display.



3. SET PUSHBUTTON

Pressing this pushbutton opens a menu on the main display of the Control Module to enableadjustment of the DC voltage setting via the MODIFY keyboard and rotary knob.

4. ON PUSHBUTTON

This pushbutton toggles the output of the module on and off. Output On status is indicated byillumination of the LED above the pushbutton.

3.1.4 MTS-3040 AC Voltage M odule

Note: Features of the MTS-3060 AC Current and -3030 Voltage/Current modules are virtuall yidentical.

FIGURE 3.4 AC VOLTAGE PANEL

1. ALPHANUMERIC DISPLAY

This Liquid Crystal Display (LCD) provides information on current equipment status, includingamplitude and phase angle of each output source fitted to the unit.

2. FUNCTION KEYS

These keys are used to select a parameter prior to modifying it. The first press selects amplitude ofa given output, while the second selects its phase angle.

3. COOLING INTAKE/FILTER

The filter on this cooling intake may be removed for cleaning if necessary.



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4. OUTPUT STATUS LEDS

Illumination of these LEDs indicates that the outputs are enabled and capable of delivering to a connected load, even if the output settings are presently at zero. If a module doesn’t havcomplement of output sources, only those outputs equipped with an output source will illum

5. OUTPUT TERMINALS

Connection is made here to the device(s) under test.

3.2 REAR PANEL LAYOUT

3.2.1 MTS-3000 Control Module Rear Panel

FIGURE 3.5 CONTROL MODULE REAR PANEL

1. COOLING INTAKES

For adequate cooling, ensure that these are not obstructed.

2. COOLING EXHAUST

Ensure that warm air exiting isn’t restricted nor reflected back towards intakes.

3. AC INLET

For 120V or 240V main supply, as indicated by panel label.

4. COM 1 RS232C PORT

Female DB-9 serial port wired as a DCE (Data Communications Equipment) for external DUT.

5. IRIG B CONNECTORS (OPTIONAL)

Connect to IRIG B datastream from GPS receiver.



6. COM 2 RS232C PORT

Male DB-9 serial port wired as a DTE (Data Terminal Equipment) for external PC.

7. MAINS CIRCUIT BREAKER

Press to reset if breaker trips.

8. EXTERNAL CONNECTOR

External I/O connector to run one or more systems in a master-slave configuration.

9. PRINTER PORT

Connects to external printer to print Quick-Test reports.

10. GROUNDING STUD

Connect to a secure external ground during testing.



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3.3 BASIC APPLICATIONS

3.3.1 Getting Started

Because of its modularity, the MTS-3000 series system can be configured in many different ways. It’s notfeasible to provide a detailed operation description for every possible configuration. Except wherethe assumption is the equipment is configured as a three phase protective relay test system equipthree AC voltage sources, three AC current sources, a digital I/O module with DC current sourcingDC voltage module, as illustrated below. Specific examples of less fully equipped systems will be prin the Detailed Operation section of this manual.

FIGURE 3.6 TYPICAL THREE PHASE SYSTEM



Connect mains power to the Control Module (CM), the rear panel chassis safety ground to a known goodground, and press PWR. A momentary message, indicating software version number and otherinformation, appears briefly on the CM display. LEDs are turned on briefly, and then the default displayswill appear as shown below:

FIGURE 3.7 DISPLAY MESSAGES

These values correspond to a balanced three-phase voltage of 120V phase-to-phase, and current which willbe in phase with the voltage. If an output module isn’t fitted with a full complement of output sources,there will be less data on the display(s). If the current output module, for example, has only two currentsources, only lines IA and IB wil l appear on the display.

The example that follows illustrates some of the important operating aspects of the system. It’s assumedthat a single phase impedance relay with a time delay response is connected to the MTS-3000 system,operating at approximately 50 volts and seven amps, with a phase shift between voltage and current of 75°.

FIGURE 3.8 TEST CONNECTIONS

T he v olt age and c urre nt m o d ul es w i l l sh o w def aul t v alu es as sh ow n respecti v ely bel ow :



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The voltage coil is connected to AC voltage terminals A and N, the current coil to AC current terminand N, and the relay output contact to INPUT 1 terminals of the DIGITAL I/O module. If it’s desirefollow through the steps of the test process using your MTS system, a short jumper cord with male terminals can be inserted into the two left terminals of INPUT 1 at the appropriate times to simulatoperation. It will be necessary to provide a current path by shorting terminals A and N of the cmodule with a second jumper cord.



3.3.2 Basic AC Voltage, Current and Phase Angle Output

1. Ensure the system outputs are disabled. PressENABLE, if necessary, to extinguish its LED. SelectFAULT mode by pressing FAULT. The FAULT LEDlights to confirm the selection.

2. Press F1 of the voltage module. Its LED lights toindicate selection of channel VA, and a flashing cursorappears beneath the V on the first line of the adjacentdisplay.

3. Press 5, 0,., 0, and ENTER on the MODIFY keypad.Channel VA amplitude reading follows the typed inputand changes to 50.00 V.

4. Press F1 on the current module. Its LED lights toindicate selection of channel IA, and a flashing cursorappears beneath the A on the first line of the adjacentdisplay. The LED on channel VA goes out.

5. Press 7, ., 0, 0, and ENTER on the MODIFY keypad.Channel IA amplitude reading follows the typed inputand changes to 7.00A.

6. Press F1 again on the current module. Its LED remainslit, and a flashing cursor appears beneath the degree

symbol (°) on the ‘I A’ line of the display.

7. Press 7, 5, ., 0, and ENTER on the MODIFY keypad.Channel IA phase angle reading follows the typedinput and changes to 75.0 °. The voltage-to-current

FIGURE 3.9 BASIC AC ADJUSTMENTS phase angle reading on the CM display also changes to 75.0°.

8. Press ENABLE. The ENABLE LED lights.

9. Press and hold FAULT. The FAULT LED flashes to indicate fault state is active. The output warningLEDS next to the output terminals of the current and voltage modules are also lit, indicating that theoutputs are enabled. The programmed (and other default) AC voltage and current values appear at theoutputs until the FAULT button is released.

If the programmed values in the example above were sufficient to operate the relay connected to theoutputs of the MTS system, then, upon operation of the relay the LED indicator associated with INPUT 1will light, and the audible tone wil l sound. Once the FAULT button is released, the AC outputs return tozero, the relay being tested drops out, and the indicator LED and tone turn off.



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If the chosen AC values were close to the relay operate point - but did not pick it up - the MODIFYcan be used to continuously vary one parameter until the pickup point is determined. Considexample, that the voltage and phase angles were appropriate, but the current was too low.

10. Reselect IA current amplitude adjust mode by pressing F1 on the current module. Note that the initiapress selects amplitude adjust mode, the second press phase angle adjust mode, the thdeselects that channel (LED will go out), and the fourth press selects amplitude adjust mode ag

11. Press and hold the FAULT button, and rotate the MODIFY knob slowly clockwise until the relay tested operates, as verified by the DIGITAL I/O visual (LED) and audible indicators.

12. If it’s desired to verify the operate point more precisely, the MODIFY knob is rotcounterclockwise and clockwise, as required, to lower and raise respectively the output cthrough the operate point.

Now consider that a timing check is to be done on the relay under test at a current well above thepoint. For this example, it will be assumed that the relay minimum pickup occurred at 7.00 amps and thetiming check is to be performed at 10.00 amps.

13. Disable the outputs by pressing ENABLE. The ENABLE LED and the AC output warning LEDsgo off. This permits the readjustment of current amplitude to be done ‘off line’.

14. Press FAULT. Its status LED will light.

15. Reselect IA current amplitude adjust mode by pressing F1 on the current module. Press 1, 0, ., 0, andENTER on the MODIFY keypad. This new value appears in the IA channel display.

16. Press ENABLE to re-enable the AC outputs. The ENABLE LED lights.

17. Press the FAULT button briefly only. This automatically latches the system into Dynamic Fault mthe FAULT LED begins to flash slowly to indicate the FAULT mode is active, and the timer readithe first line of the Control Module display begins incrementing. The AC output warning LEDs land the programmed AC values appear at the AC output terminals.

18. When the relay operates, it trips off the AC outputs of the MTS, freezes the timer and AC outpureadings, and enters the ‘Post Fault’ state, as indicated by extinguishing of the FAULT LEDillumination of the TRIP LED located above the RESET pushbutton.

19. Once the timing results have been observed and, if necessary, recorded, the system is retnormal by pressing RESET. This resets the timer and V/I readings, and extinguishes the TRIP LED.

Note the important difference in this ‘dynamic fault’ mode compared to the ‘static fault’ mode describedsteps 1-12.



STATIC FAULT MODEWhen the FAULT button is pressed and held, the system is in static fault mode. The AC outputs stayenergized as long as the FAULT button is held on, and the appearance of a trip signal at the DIGITAL I/Omodule INPUT 1 wil l annunciate, but won’t trip off the AC outputs.

DYNAMIC FAULT M ODEA brief (<250 msec.) press on the FAULT button latches the system into dynamic fault mode. In this mode,the AC outputs latch on until terminated by either pressing RESET or by appearance of a trip signal fromthe relay under test, as monitored by INPUT 1 of the DIGITAL I/O module.

Typically, static test mode is used for accurate determination of pickup points, where it’s desired to swingAC outputs repeatedly through the operate point without interrupting the outputs. Dynamic test mode isusually used for timing checks, especially at higher current levels where it’s desirable to minimize the timethe current is applied to the device under test.

3.3.3 Frequency Output

By default, all AC outputs are synchronized to the input line frequency. Variable frequency mode cangenerate one or two different frequencies for each fault state in the range of 8 to 1000Hz. Any output orcombination of outputs can be assigned to either of the frequency sources. 3.3.3.1 BASIC FREQUENCY OUTPUT.

Basic frequency mode allows one or more channels to be selected to output a frequency (Frq1) in the rangeof 8 - 1000Hz. All other output channels will remain at the default "LINE" frequency. Frequency 1 (Frq1)can be set to different frequencies for prefault and fault state, if desired.

1. Select the desired fault state - either prefault orfault.

2. Press F2 in the MODIFY section of the CM. Thisenables frequency adjust mode, the LED lights,and the second and third lines of the displaychange, as shown.

3. Enter the desired new frequency via the MODIFYnumeric keypad followed by ENTER, or by turn-ing the rotary knob until the desired frequency isshown on the second line of the display.

4. Individual output channels now may be assignedthis frequency by pressing their Fn keys. Theassociated channel LEDs will flash to indicatethey’ve been set to the new frequency. A secondpress of any Fn key will restore that channel to thedefault line frequency. Deselecting F2 on the CMby pressing it again locks all previously assigned(flashing) channels to Frequency 1, disables theMODIFY input, turns off the F2 LED, and returnsthe display to normal.

FIGURE 3.10 FREQUENCY ADJUST



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5. To return to the default (all output channels synchronized to LINE), press F2, followed by F3 oCM. F3 selects the SEL[ect] LINE SYNC mode, and disables the frequency adjust mode.

To display the output frequency of any channel, first ensure the frequency programming mode is d(i.e. the F2 LED on the CM should be extinguished). Then select the channel by pressing its Fn kfrequency of the particular output channel will appear on line 2 of the CM display.

3.3.3.2 ADVANCED FREQUENCY OUTPUT.

Advanced frequency mode is an extension of basic frequency mode in that unselected output channbe set to frequency 2 (Frq2) instead of "LINE". To set frequency 2:

Enter the following key sequence: MENU | Settings | Frequency 2 | Internal, and then press F3 to enter thdesired Frequency 2 value.

3.3.4 DC Voltage

In basic DC voltage mode, the dc output voltage is independent of fault state. Advanced dc voltagallows the user to set different DC voltage levels in each of the prefault, fault, and postfault states.

3.3.4.1 BASIC DC VOLTAGE OUTPUT.

1. Press SET on the DC VOLTS module. The SET LED will turn on, and the display in the CONTROL section of the CM will change, as shown.

2. Press F1 on the CM.This enables Modify,activates a flashingcursor on the F1 line ofthe display, and turnson the F1 LED toindicate DC voltsadjust mode is active.

FIGURE 3.11 DC VOLTAGE ADJUST

3. Enter the desired DC voltage level on the MODIFY keyboard. For 250.0VDC, for example, pres0, ENTER. This setting will appear on line 1 of the CM display, as well as the LED output displthe DC VOLTS module.



4. Incremental changes to the setting can be made with the MODIFY rotary knob. When finished, disableModify by pressing SET again. This wil l extinguish the SET LED and the F1 LED, and restorepreviously existing readings to the CONTROL display.

5. To apply the DC voltage to a connected load, press the ON switch on the DC VOLTS module. Thisconnects the programmed DC to the output terminals and lights the ON LED status indicator,regardless of the status of the AC outputs.

3.3.4.2 ADVANCED DC VOLTAGE OUTPUT.

Advanced dc voltage mode allows the user to set different DC voltage levels for each of the prefault, fault,and postfault states.

1. Press SET on the DC VOLTS module. The SET LED will turn on, and the display in the CONTROLsection of the CM will change, as shown.

2. Press F2 on the CM to set enable fault state specific voltage levels

3. Select F1, F2, or F3 to program the Prefault, Fault, or Postfault levels respectively.

3.3.5 DC Current Output

This optional feature is for testing DC current operated targets on older electromechanical relays. Thesetargets are typically connected in series with the relay trip output contact so the MTS contact sensingINPUT 1 is used to supply DC current to the external relay output circuit.

NOTE: The low impedance nature of this source could provide the necessary trip path to inadvertently tripan auxill ary relay or circuit breaker. The DC current output only should be used when theprotective relays trip output circuit is properly isolated.

FIGURE 3.12 DC CURRENT ADJUST



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1. Press SET on the DIGITAL I/O module. The SET LED lights and the display in the CONTsection of the CM changes, as shown.

2. Press F3 on the CM. This enables Modify, activates a flashing cursor on the F3 line of the displturns on the F3 LED to indicate DC current adjust mode is active.

3. Enter the DC current level (typically 0.2 or 2.0 amps) on the MODIFY keyboard, followed by ENTor turn the MODIFY rotary knob until the desired reading appears on the F3 line of the display.

4. Disable Modify by pressing SET again. This will extinguish the SET LED and restore previoexisting readings to the CONTROL display.

5. Apply the programmed DC current output to a circuit connected to the two left hand terminINPUT 1 at any time by pressing the ON switch on the DIGITAL I/O module. The ON LED indicthe status of this output. The DC output may be left on continuously so it immediately operattarget of any relay under test upon relay pickup.

Note that pressing the SET button on the DIGITAL I/O module also provides access to the advanceand output settings of the DIGITAL I/O module. Further information on these features is available Advanced Operation section of this manual.

3.3.6 High AC Voltage Output

The standard output of 150 V phase to neutral available from each AC output source is adequate protective relaying applications, but occasionally higher voltages may be required. If at least two vsources are fitted, it’s possible to obtain higher voltages by modifying the phase relationship voltages.

FIGURE 3.13 AC VOLTAGE VECTORS

As shown in the diagram, the output load is normally connected phase to neutral, in this case A tovoltage requirements greater than 150 volts, the load may be connected between A and Bb. It’s ne

to adjust the phase angle of phase B voltage from its default 240.0° to 180.0°. The resultant voltage will

then be the mathematical sum of the amplitudes of the two voltages.

A

B

B b

C

L o ad

N



3.3.7 High AC Current Output

It’s relatively common to require higher current than can be delivered by a single current output channel.The current channels may be paralleled to increase total current but, as shown, it’s necessary to modify thephase angle of each channel that’s added in parallel to the initial one. The amplitude of each channel alsoshould be set to the same value.

FIGURE 3.14 AC CURRENT VECTORS

Two or three output channels may be paralleled at the output terminals, or at the connected load. It’simportant to use the largest feasible current leads to minimize voltage drop in the leads, especially if theleads are paralleled at the load and only a single neutral lead returns the current to the source.

TIP: There’s a menu selection available to automaticall y adjust all available sources for optimum highcurrent delivery, as well as to provide a direct reading of the total current. See Parallel CurrentMode in the Advanced Operation section.

3.3.8 Overcur rent Relay Test

FIGURE 3.15 OVERCURRENT RELAY TEST

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B

B b

C

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NC c



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3.3.8.1 SETUP.

To test a single phase overcurrent relay, connect the test leads, as shown by the solid lines. A thrrelay or three single-phase devices on a relay panel require the additional connections shown aslines.

If the relay requires auxiliary DC power, connect it as shown by the dotted lines. If there are moresingle set of contacts provided (e.g. separate timed and instantaneous contacts), it will be necemove the contact operation sensing leads to the appropriate terminals for the separate element tests. If threecurrent modules are not fitted, it will be necessary to move the Ia output to the other phases in turn tthem.

The system should be in Vector fault mode, as shown in the fourth line of the CM display above. If ienter the following key sequence: MENU | Settings | Fault Type | Vector, and then press MENU again.

3.3.8.2 MINIMUM PICKUP TEST .

1. Disable the outputs, if necessary, by pressing ENABLE until its LED is out, and press FAULTLED should come on.

2. Select the A phase of the current output module by pressing the F1 key on the module. Its LEcome on and a cursor will flash slowly beneath the ‘A’ representing Amps in the F1 line omodule’s display.

3. Enter (via the MODIFY keyboard or rotary knob), a current value that’s somewhat less thaexpected minimum pickup level of the relay under test.

4. Enable the outputs by pressing ENABLE. Press and hold FAULT, and rotate the MODIFY clockwise until the relay begins to operate. The LED indicator on INPUT 1 of the DIGITAL module will light, and the audible tone, if enabled via the tone switch, will sound. The current madjusted up or down via the MODIFY knob to verify the pickup level.

5. Release the FAULT button when the test is complete.

TIP : INPUT 2 on the DIGITAL I/O module can be configured as an external start input to work wfoot switch, relieving the operator of the need to continuously press the FAULT pushbuttonthe Advanced Operation section for information on configuring the input. Any commercnormally open foot switch will work. A heavy duty one is available from Manta Test Systems

3.3.8.3 INVERSE-TIME CHARACTERISTIC TEST.

If the expected current required for this test is higher than can be achieved from a single currentchannel, it will be necessary to parallel two or three channels to get the desired current. Use the gage leads possible to minimize voltage drop in the leads. If the output channels are paralleled at the loadinstead of at the output terminals, remember that the neutral lead will be carrying two or three times thecurrent of the individual phase leads. Ensure that the amplitudes and phase angles of each chaadjusted correctly (as described in previous item 3.3.7), or use the automated paralleling feature avthrough the Control Module’s menu.



1. Disable the outputs, if necessary, by pressing ENABLE until its LED is out, and press FAULT. Its LEDshould come on.

2. Select the A phase of the current output module by pressing the F1 key on the module. Its LED willcome on and a cursor will flash slowly beneath the ‘A’ representing Amps in the F1 line of themodule’s display.

3. Enter (via the MODIFY keyboard or rotary knob) the first current level at which a timing check is tobe made on the relay under test.

4. Enable the outputs by pressing ENABLE. Press FAULT momentaril y and release it. The Fault currentwill seal in and stay on until the relay operates. At that time, the FAULT LED will stop its slowflashing, the TRIP LED wil l light, the output current will trip off, and the timer and all current, voltage,and phase readings will be frozen.

5. Record the current and timer readings, and press RESET to restore the system to Prefault mode.

6. Repeat Steps 1 through 5, as required, for each new value of current.

3.3.8.4 INSTANTANEOUS ELEM ENT TEST.

In many cases, it wil l be necessary to parallel current channels to reach the high current settings oftenapplied to instantaneous elements. See the previous test for further detail s. Many relays have a separateoutput contact for the instantaneous element; so it may be necessary to move the relay operation sensingleads of INPUT 1.



3. Enter (via the MODIFY keyboard or rotary knob) a current level within 5%, but lower than theexpected operate point of the relay under test.

4. Enable the outputs by pressing ENABLE. Press and hold FAULT. Raise the current with the MODIFYknob until the relay operates.

5. Release the FAULT button. This wil l reset the timer, and the current programming wil l remain at thelevel it was when the relay operated.

6. Press the FAULT button briefly and release. The relay should operate again with the current applieddynamically. The TRIP LED will li ght, the output current will trip off, and the timer and all current,voltage, and phase readings will be frozen.

Record the current and timer readings, and press RESET to restore the system to Prefault mode.



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undere TRIPtionce the

TIP : If the tests are being conducted on a three phase relay, three current sources are fitted, andbeing done can be handled by a single channel. Press F4 on the CM to transfer the test sethe next phase.

3.3.8.5 TARGET/SEAL-IN TEST.

If the relay under test has a DC current-operated target, the sensing leads from INPUT 1 must be coto the contact output terminals of the relay which contain the target element. Note that the DC current is anoptional feature of the DIGITAL I/O module.

1. As described in the above sections, program the AC current with outputs disabled to a sufficientlevel to ensure operation of the element under test.

2. As described in item 3.3.5 DC Current Output, program the DC current to an appropriate level relay under test. The most common levels are 0.2A and 2.0A. Since this isn’t a precision pickand is only designed to verify that the target will operate when tripping current passes through tcontact, it’s suggested that the setting be 5% to 10% above the nominal level.

3. Press the ON button on the DIGITAL I/O module. This enables the DC current output and turnsstatus indicator LED. Press ENABLE in the Control section of the CM to enable the AC outputs

4. Press FAULT momentarily to latch on the AC outputs. When the AC current element of the relaytest closes its contact, the DC current passing through the contact will pick up the DC target. ThLED in the CONTROL section will light, and the AC current to the relay will turn off. The operaindicator LED on INPUT 1 should stay on, as will the audible tone indicator if selected to on, sinauxiliary contacts of the target relay in parallel with the AC contact remain picked up.

5. Press the ON pushbutton of the DIGITAL I/O module to turn off the DC current. This will drop out theseal-in relay, as indicated by the INPUT 1 LED and tone turning off.



3.3.9 Differential Relay - Three Terminal Type

Most Electromechanical current differential relays are a three terminal type. This section describes how toperform tests on this type of relay.

FIGURE 3.16 THREE TERMINAL DIFFERENTIAL RELAY TEST

3.3.9.1 PICKUP TEST.

Connect the relay as shown above. Connections are also shown for DC voltage supply to the relay if itrequires auxili ary power.

1. Select slope display mode by entering the following key sequence: MENU | Settings | Display Optns |Slope | 3wdg BDD style, followed by MENU again.

Selecting slope display mode forces the CM to display the % slope, operate current, and restraint current

on the 2nd and 3rd line of the CM. The phase angle of Ib also will change to 180°.

2. Disable the outputs if necessary by pressing ENABLE until its LED is out, and press FAULT. Its LEDwill come on.


4. Enter the desired restraint current via the MODIFY keyboard or rotary knob.

5. Select the B phase of the current output module by pressing the F2 key on the module, and enter thedesired restraint current via the MODIFY keyboard or rotary knob.

6. Enable the outputs by pressing ENABLE. Press and hold FAULT.



tate the theThe

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7. Press F1 on the current module to select the A phase current for amplitude adjustment and roMODIFY knob clockwise until the relay begins to operate. The LED indicator on INPUT 1 ofDIGITAL I/O module will light, and the audible tone if enabled via the tone switch, will sound. current may be adjusted up or down via the MODIFY knob to verify the pickup level.

The calculated values of slope, operate current and restraint current are displayed on the 2ndline of the CM display.


9. To repeat for different values of restraint current, repeat the above process.

3.3.9.2 OPERATE TIME TEST.

1. Set up the MTS, as described above, with operate current sufficient to operate the relay at thelevel of restraint current.

2. Clear any previous trip indications by pressing RESET. Press FAULT momentarily to enter DyFault Mode. The AC outputs will be latched on until the relay operates. The TRIP signal will forctransition from FAULT to POSTFAULT, illuminating the TRIP LED, freezing the timer and Areadings, and disabling the AC outputs.

3. Record the timer reading from the first line on the Control Module display, and press RESET to rthe system operation.

3.3.9.3 HARMONIC RESTRAINT TEST.

1. Disable the AC outputs with the ENABLE switch. Remove the lead from channel B since itrequired for this test.

2. Press the FAULT button to select FAULT state.

3. Select channel A amplitude of the current module, and adjust it with the MODIFY knob or keypad the desired test value (usually equal to the tap value).

4. Select channel B amplitude of the current module, and adjust it to 0 with MODIFY knob or keypad.

5. Enable the outputs by pressing the ENABLE button.

6. Select Harmonic mode for current channel A via the CM menu by entering the following

sequence: MENU | Settings | Harmonics | ACI1 φA Harm | Fund+Harm | Ampl 0.0 %. This enable

MODIFY to directly adjust the percentage of harmonic content of the fundamental current wamplitude is displayed on the AC current module.

Note the display for IA changes from IA to IAh as a reminder that IA is in harmonic mode.



7. Press and hold FAULT. The relay should pick up.

8. While holding the FAULT button, Press F3 to select "Ampl 0.0 %"

9. Rotate the Modify knob clockwise while continuing to press FAULT. The % harmonic content of theAC current will continue to increase, as observed on the display of the CM, until the relay drops out.Record the % harmonic reading at this point.

10. Disable harmonic mode before proceeding with other tests. Press the BACK key, followed by:Harmonics OFF, and then press the MENU button to exit the menu system.

Note that, for some latching trip elements, it may be necessary to reverse the order of this sequence (i.e.initially set the % harmonic content to a high level, and then lower it until the relay picks up).

3.3.9.4 INSTANTANEOUS TEST.

1. Disable the AC outputs with the ENABLE switch.

2. Channel B should still be disconnected from the relay as in the previous section. If more current isrequired in this step than can be delivered by a single channel, parallel the required number of channels(See Parallel Current Mode in the Advanced Operation section).

3. Select the output channel(s) amplitude adjust mode and, with MODIFY keypad or rotary knob, set acurrent to be within 5%, but lower than the expected operate point.

4. Enable the AC outputs by pressing the ENABLE button. Press and hold FAULT. Increase the currentoutput with the MODIFY rotary knob until the relay operates, note the current at that point, and releaseFAULT.

5. The operate point can be checked dynamically by leaving the current amplitude adjustment at the samepoint, and by pressing FAULT briefly only. This will latch on the current until i t’s tripped by sensingthe relay operation. After recording the operate value, press RESET to restore normal operation.

3.3.9.5 TARGET TEST.

If the relay under test has a DC current-operated target, the sensing leads from INPUT 1 must be connectedto the contact output terminals of the relay which contain the target element. Note that the accompanyingdifferential relay drawing doesn’t show the current target coil and contact, and the DC current capability isan optional feature of the DIGITAL I/O module.

1. As described in the above sections, program the AC current with outputs disabled to a sufficiently highlevel to ensure operation of the element under test.

2. As described in section 3.35 DC Current Output, program the DC current to an appropriate level forthe relay under test. The most common levels are 0.2A and 2.0A.

3. Press the ON button on the DIGITAL I/O module, which enables the DC current output and turns onits LED.



relayget andht,y on,lay in

t the

on

be used

4. Enable the AC outputs by pressing the ENABLE button in the Control section of the CM.

5. Press FAULT momentarily to enter Dynamic Fault Mode. When the AC current element of theunder test closes its contact, the DC current passing through the contact will pick up the DC tarforce the transition from FAULT to POSTFAULT. The TRIP LED in the CONTROL section will ligand the AC current to the relay will turn off. The operation indicator LED on INPUT 1 should staas will the audible tone indicator if selected to on, since the auxiliary contacts of the target reparallel with the AC contact remain picked up.

6. Press the ON pushbutton of the DIGITAL I/O module to turn off the DC current. This will drop ouseal-in relay, as indicated by the INPUT 1 LED and tone turning off.

3.3.10 Differential Relay - Independent Coil Type

Many solid state current differential relays have independent coils for the two current inputs. This sectidescribes how to perform standard tests on this type of relay.

FIGURE 3.17 INDEPENDENT COIL DIFFERENTIAL RELAY TEST

3.3.10.1 SLOPE TEST.

Connect the relay, as shown above. The dotted connection between A and C channel outputs mayif slope checks are to be done at very high current levels. Connections are also shown for DC voltagesupply to the relay if it requires auxiliary power.

1. Select slope display mode by entering the following key sequence: MENU | Settings | Display Optns |Slope | 2wdg 87T style, followed by MENU again.



Selecting slope display mode forces the CM to display the % slope, operate current, and restraint current

on the second and third line of the CM. The phase angle of Ib also will change to 0°.

2. Disable the outputs, if necessary, by pressing ENABLE until its LED is out, and press FAULT. Its LEDwill come on.


4. Enter the desired nominal Ia (restraint) current via the MODIFY keypad or rotary knob.

5. Select the B phase of the current output module by pressing the F2 key on the module, and enter thedesired nominal restraint current via the MODIFY keyboard or rotary knob.

6. Press the F2 key of the current module again to select phase angle adjustment on B phase, indicated by

a flashing cursor beneath the ° symbol.

7. Adjust the phase angle on channel B, as required, via the MODIFY keyboard or rotary knob. The angle

is usually set to 0°, but may be displaced by +/- 30( for relays protecting wye-delta transformers.

8. Enable the outputs by pressing ENABLE. Press and hold FAULT. Select IB for amplitude adjustment,and then slowly lower the Ib current by rotating the MODIFY knob counterclockwise until the relaybegins to operate. The LED indicator on INPUT 1 of the DIGITAL I/O module will l ight, and theaudible tone, if enabled via the tone switch, will sound. The current may be adjusted up or down viathe MODIFY knob to verify the pickup level.

Note the calculated values of slope, operate current and restraint current are displayed on the 2nd and 3rdline of the CM display.


10. To repeat for different values of restraint current, repeat the above process.


1. Set up the MTS, as described above, with sufficient operate current to trip the relay at the desired levelof restraint current. Release the FAULT button.

2. With the AC outputs enabled (ENABLE LED lit) and the trip indication (if any) cleared by pressingRESET, press FAULT momentaril y to enter Dynamic Fault Mode. The AC outputs wil l be latched onuntil the relay operates. The TRIP signal from the relay will force a state change from FAULT toPOSTFAULT causing the TRIP LED to be lit, the timer and AC readings to be frozen, and the ACoutputs to be disabled.

3. Record the timer reading from the first line on the Control Module display. Press RESET to restore thesystem operation.



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3.3.10.3 HARMONIC RESTRAINT TEST.

1. Disable the AC outputs with the ENABLE switch. Remove the lead from channel B since itrequired for this test.

2. Press the FAULT button to select FAULT state.

3. Select channel A amplitude of the current module, and adjust it with the MODIFY knob or keypad the desired test value (usually equal to the tap value).

4. Select channel B amplitude of the current module, and adjust it with MODIFY to 0.

5. Press ENABLE. The ENABLE LED will be lit.

6. Select Harmonic mode for current channel A via the CM menu by entering the following

sequence: MENU | Settings | Harmonics | ACI1 φA Harm | Fund+Harm | Ampl 0.0 %. This enable

MODIFY to directly adjust the percentage of harmonic content of the fundamental current wamplitude is displayed on the AC current module.

Note the display for IA changes from IA to IAh as a reminder that IA is in harmonic mode.

7. Press and hold FAULT. The relay should pick up.

8. While holding the FAULT button, press F3 to select "Ampl 0.0 %"

9. Rotate the Modify knob clockwise while continuing to press FAULT. The % harmonic content oAC current will continue to increase, as observed on the display of the CM, until the relay dropRecord the % harmonic reading at this point.

10. Disable harmonic mode before proceeding with other tests. Press the BACK key, followed byHar-monics OFF, and then press the MENU button to exit the menu system.

Note that, for some latching trip elements, it may be necessary to reverse the order of this sequeinitially set the % harmonic content to a high level, and then lower it until the relay picks up).

3.3.10.4 INSTANTANEOUS TEST.

1. Disable the AC outputs with the ENABLE switch.

2. Channel B should still be disconnected from the relay, as in the previous section. If more currebe required in this step than can be delivered by a single channel, parallel the required number ochannels (See Parallel Current Mode in the Advanced Operation section).

3. Select the output channel(s) amplitude adjust mode and, with MODIFY keypad or rotary knobcurrent to be within 5%, but lower than the expected operate point.



4. Enable the AC outputs with the ENABLE switch. Press and hold FAULT. Increase the current outputwith the MODIFY rotary knob until the relay operates. Note the current at that point and releaseFAULT.

5. The operate point can be checked dynamically by leaving the current amplitude adjustment at the samepoint, and by pressing FAULT briefly only. This will latch on the current until i t’s tripped by sensingthe relay operation. After recording the operate value, press RESET to restore normal operation.

3.3.10.5 TARGET TEST.

If the relay under test has a DC current-operated target, follow the procedure in the preceding section3.3.9.5. Note that the accompanying differential relay drawing doesn’ t show the current target coil andcontact, and the DC current capabilit y is an optional feature of the DIGITAL I/O module.

3.3.11 Voltage Relay Test

FIGURE 3.18 VOLTAGE RELAY TEST3.3.11.1 SETUP.

To test a single phase voltage relay, connect the test leads, as shown by the solid lines. A three-phase relayor three single-phase devices on a relay panel require the additional connections shown as dashed lines. Ifthe relay requires auxiliary DC power, connect it as shown by the dotted lines. If there are more than asingle set of contacts provided (e.g. separate timed and instantaneous contacts), it wil l be necessary tomove the contact operation sensing leads to the appropriate terminals for the separate element tests. If threevoltage modules are not fitted, it wil l be necessary to move the Va output to the other phases in turn toverify them.



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3.3.11.2 MINIMUM PICKUP TEST.

1. Disable the outputs, if necessary, by pressing ENABLE until its LED is out, and press FAULT. Itsshould come on.

2. Select the A phase of the voltage output module by pressing the F1 key on the module. Its LEcome on and a cursor will flash slowly beneath the ‘V’ representing Volts in the F1 line omodule’s display.

3. Enter (via the MODIFY keyboard or rotary knob) a voltage value that’s less than (overvoltage ror more than (undervoltage relays) the expected minimum pickup level of the relay under test.

4. Enable the outputs by pressing ENABLE.

5. Press and hold the FAULT button. Select the A phase of the voltage output module by pressing thkey on the ACV module, and rotate the MODIFY knob clockwise (overvoltage) or counterclock(undervoltage) until the relay begins to operate. The LED indicator on INPUT 1 of the DIGITALmodule will light, and the audible tone, if enabled via the tone switch, will sound. The voltage madjusted up or down via the MODIFY knob to verify the pickup level.


TIP : If testing a three phase relay, the AC test voltage entered in Step 3 can be transfered to tphase (VB output) by pressing the Vector Rotate (F4) key on the CM.

TIP : INPUT 2 on the DIGITAL I/O module can be configured as an external start input to work wfoot switch, relieving the operator of the need to continuously press the FAULT pushbuttonthe Advanced Operation section for information on configuring the input. Any commercnormally open foot switch will work. A heavy duty one is available from Manta Test Systems

3.3.11.3 TIMING TEST.

1. Disable the outputs, if necessary, by pressing ENABLE until its LED is out. Press FAULT. Its should come on.


3. Enter (via the MODIFY keyboard or rotary knob) the first voltage level at which a timing check be made on the relay under test.

4. With the AC outputs enabled (ENABLE LED lit), and the trip indication (if any) cleared by presRESET, press FAULT momentarily to enter Dynamic Fault Mode. The AC outputs will be latcheuntil the relay operates. The TRIP signal from the relay will force a state change from FAUPOSTFAULT causing the TRIP LED to be lit, the timer and AC readings to be frozen, and thoutputs to be disabled.



5. Record the voltage and timer readings, and press RESET to restore the system to Prefault state.

6. Repeat Steps 1 through 5, as required, for each new voltage value.

TIP: The F1 key adjacent to the time display toggles the display mode between seconds and cycles.


If the relay under test has a DC current-operated target, the sensing leads from INPUT 1 must be connectedto the contact output terminals of the relay which contain the target element. Note that the DC current is anoptional feature of the DIGITAL I/O module.

1. As described in the above sections, program the AC voltage with outputs disabled to a level which willensure operation of the element under test.

2. As described in the DC Current Output section, program the DC current to an appropriate level for therelay under test. The most common levels are 0.2A and 2.0A. Since this isn’ t a precision pickup testand is only designed to verify that the target will operate when tripping current passes through the tripcontact, it’s suggested that the setting be 5% to 10% above the nominal level.

3. Press the ON button on the DIGITAL I/O module, which enables the DC current output and turns onits LED, and press ENABLE in the Control section of the CM to enable the AC outputs.

4. Press FAULT momentarily to enter Dynamic Fault Mode. When the AC voltage element of the relayunder test closes its contact, the DC current passing through the contact wil l pick up the DC target. TheTRIP LED in the CONTROL section will light, and the AC voltage to the relay will turn off. The oper-ation indicator LED on INPUT 1 should stay on, as will the audible tone indicator (if selected to on),since the auxili ary contacts of the target relay in parallel with the AC contact remain picked up.


3.3.12 Frequency Relay Test

3.3.12.1 SETUP.

The test connections for under/overfrequency relays are identical to those for voltage relays, refer to theprevious section for details. By default all output channels are synchronized to the input power line (mains)frequency, referred to as LINE on the CM display. Individual output channels can be selected to output atfrequency Frq1. Frequency 1 can be set to any frequency in the range of 8.000 to 1000.0 Hz. Unselectedchannels will remain at the default mains frequency.





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3. Enter the nominal voltage value required via the MODIFY keyboard or rotary knob.

4. The default frequency is displayed on the F2 line of the Control Module display. Press the F2 buselect variable frequency mode, indicated by illumination of the F2 indicator LED and the text display changing from "Freq:" to "Frq1". Enter the desired initial frequency via the MODIFYkeyboard or rotary knob.

5. With the F2 LED on the CM lit, press F1 on the voltage module to select that channel for frequency. Note that the ACVs’ F1 indicator LED flashes slowly to indicate that VA is now generthe FRQ1 frequency. All other channels (non-flashing channels) remain at the mains frequency.

6. Enable the outputs by pressing ENABLE. Press and hold FAULT. Press F2 on the Control Moenable frequency adjust mode, and rotate the MODIFY knob clockwise (overfrequency) orcounterclockwise (underfrequency) until the relay begins to operate. The LED indicator on INPof the DIGITAL I/O module will light, and the audible tone, if enabled via the tone switch, will souThe frequency may be adjusted up or down via the MODIFY knob to verify the pickup level.



1. If you haven’t done so, perform the above steps of the pickup test. Leave the fault frequencypickup value at which it’s desired to perform timing checks.

2. If it’s desired to start the timing test from a frequency other than mains frequency, it’s necessary toprogram an alternate prefault frequency. To do this, disable the outputs, if necessary, by pENABLE until its LED is out, and then press PREFAULT. Its LED should come on. Press F2 to frequency 1 adjust mode for the PREFAULT state. Note that the output channel select LED F1AC voltage module flashes to indicate that the frequency of VA is being changed. Enter the dprefault frequency via the MODIFY keyboard or rotary knob.

3. Enable the outputs by pressing ENABLE, and press PREFAULT. Press FAULT momentarilyrelease it. The Fault frequency will seal in and stay on until the relay operates. At that time, the FLED will stop its slow flashing, the TRIP LED will light, the output voltage will trip off, and the timand all current, voltage, and phase readings will be frozen.

4. Record the voltage and timer readings, and press RESET to restore the system to Prefault mode.

5. Repeat Steps 1 through 5, as required, for each new frequency value.


If the relay under test has a DC current-operated target, the sensing leads from INPUT 1 must be coto the contact output terminals of the relay which contain the target element. Note that the DC current is anoptional feature of the DIGITAL I/O module.



1. As described in the previous section, program the output frequency with outputs disabled to a levelwhich will ensure operation of the element under test.

2. As described in section 3.3.5 DC Current Output, program the DC current to an appropriate level forthe relay under test. The most common levels are 0.2A and 2.0A.

3. Press the ON button on the DIGITAL I/O module, which enables the DC current output and turns onits indicator LED. Press ENABLE in the Control section of the CM to enable the AC outputs.

4. Press FAULT momentaril y to latch on the AC outputs. When the frequency element of the relay undertest closes its contact, the DC current passing through the contact wil l pick up the DC target. The TRIPLED in the CONTROL section will light, and the AC voltage to the relay will turn off. The operationindicator LED on INPUT 1 should stay on, as wil l the audible tone indicator (if selected to on), sincethe auxiliary contacts of the target relay in parallel with the AC contact remain picked up.


3.3.12.5 UNDERVOLTAGE INHIBIT TEST. 1. If you haven’ t already done so, perform Steps 1-5 of the pickup check in section 3.3.12.2.

2. Select the A phase voltage of the voltage module by pressing the F1 key on the module. Turn theMODIFY knob counterclockwise until the output voltage is below the inhibit level.

3. Select frequency adjust mode by pressing F2 on the Control Module, and adjust the frequency usingthe MODIFY knob or keypad to a value which would normally cause the relay to trip. The relayshouldn’t trip. Press F2 again to disable the frequency adjust mode, extinguishing the indicator LED.

4. Select A phase voltage again via the voltage module F1 key, and begin increasing the voltage levelwith the MODIFY knob. The relay should trip when the voltage reaches the inhibit level.



ndicated |

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ath thering

3.3.13 Synchronizing/Reclosing or Synchrocheck Relay

FIGURE 3.19 SYNCHRONIZING RELAY TEST

3.3.13.1 PHASE ANGLE LIMIT TEST.

1. Make the test connections, as shown above. Ensure the system is selected for Vector mode as ion the F4 line of the Control Module display. If it isn’t, enter the following key sequence: MENU Settings | Fault Type | Vector, followed by MENU again to exit the menu.

2. Enable the AC outputs by pressing ENABLE, and press PREFAULT to activate the outpunecessary, adjust the A and B voltage output levels by selecting them with F1 or F2 respectivethe MODIFY knob or keypad.

3. Set the phase angle of voltage B to match the phase angle of voltage Α (i.e. 0.0°). Press F2 on thevoltage module twice so that the flashing cursor appears beneath the ° symbol on the B voltage line ofthe display, and enter the voltage channel A phase reading (i.e. 0.0°) via the MODIFY keypad. Thisshould cause the relay to pick up.

4. To determine the phase angle limit window, increase and decrease the B voltage phase angle via theMODIFY knob until the relay drops out.

3.3.13.2 VOLTAGE LIMIT TEST.

1. If you haven’t done so, perform steps 1-3 in section 3.3.13.1 above.

2. Select the voltage adjust mode for voltage A by pressing F1 until the flashing cursor lies bene‘V’ on the VA voltage line of the display. Determine the voltage limit window by raising and lowethe voltage with the MODIFY knob until the relay drops out.



3.3.13.3 SLIP FREQUENCY L IM IT TEST.

1. If you haven’ t done so, perform Steps 1-3 of section 3.3.13.1 above.

2. Select Slip frequency display mode by entering the following key sequence: MENU | Settings |Display Optns | Freq. & Slip, and then the MENU button again to exit the menu system. The third lineof the CM display will change to "S 0.000 Hz 0.0°". Note that the first value is the slip frequency (i.e.frq1 - frq2), and the second value is the phase angle difference between the two frequencies.

3. Enable variable frequency adjust mode for A phase voltage by pressing F2 on the Control Module,followed by F1 on the voltage module. The F2 LED on the CM i lluminates indicating frequency 1adjust mode enabled, and the F1 LED on the ACV module blinks slowly to indicate that the frequencyof the VA voltage channel now can be modified. The frequency difference between the VA output andall other outputs is displayed on the third line of the CM display as "S X.xxxHz XXX.x°".

4. Increase the slip frequency (as displayed on the second line of the CM) by raising frequency 1 via theMODIFY keyboard to a value above the expected slip frequency limit, which should cause the relay todrop out.

5. Lower the frequency with the MODIFY knob to a value that’s below the expected slip frequency limit.Note that, because the relative phase angle between frq1 (the "Generator") and frq2 (the ‘Bus’) willvary whenever the frequencies are different, it will be necessary to pause at each new frequency settinglong enough to ensure that the voltages pass within the phase angle limit of the relay.

Note: In the previous example, the VA output channel is set to frequency 1 and is displayed on the secondline of the CM display. Al l other outputs are synchronized to frequency 2. Frequency 2 by default isthe line input (mains) frequency. If desired, frequency 2 can be set to any frequency in the range of8-1000Hz by entering the following key sequence: MENU | Settings | Frequency 2 | Internal |. Thenselect F3 and enter the desired frequency 2 value. This is typically used if the frequency of the powersource for the MTS is unstable, as is often the case when being driven from a portable generator.



ionshipere aret will be element

LED

D willf the

3.3.14 Single Phase Impedance Relay or Directional Overcurrent Relay Test

FIGURE 3.20 IMPEDANCE RELAY TEST

3.3.14.1 SETUP.

Both these relay types require a single voltage and current, plus the ability to modify the phase relatbetween them. If the relay requires auxiliary DC power connect it as shown by the dotted lines. If thmore than a single set of contacts provided (e.g. separate timed and instantaneous contact)s, inecessary to move the contact operation sensing leads to the appropriate terminals for the separatetests. If an MTS-3030 V/I module is available, it can be used in place of the current and voltage modulesshown.

3.3.14.2 REACH/MINIMUM PICKUP TEST.

1. Disable the outputs, if necessary, by pressing ENABLE until its LED is out. Press FAULT. Its should come on.


3. Enter the desired test voltage value via the MODIFY keyboard or rotary knob.



4. Select the phase angle adjustment of the A phase of the voltage output module by pressing the F1 keyon the module again. The cursor now will flash slowly beneath the degree symbol (°).

5. Enter a phase angle corresponding to the MTA or desired phase angle of the relay under test via theMODIFY keypad or rotary knob .

6. Select the A phase of the current output module by pressing the F1 key on the module. Its LED willcome on and a cursor will flash slowly beneath the ‘I ’ representing Amps in the F1 line of the module’sdisplay.

7. Enter (via the MODIFY keyboard or rotary knob) an initial current value below the expected operatevalue (e.g. 5A).

8. Enable the outputs by pressing ENABLE, press and hold FAULT, and rotate the MODIFY knobclockwise, increasing current until the relay begins to operate. The LED indicator on INPUT 1 of theDIGITAL I/O module wil l light, and the audible tone, if enabled via the tone switch, will sound. Forimpedance relays, one may alternatively select voltage and adjust it downwards via the MODIFY knobto verify the pickup level.

9. To test at other phase angles, repeat beginning from Step 4.

TIP: The phase angle between the voltage and current (I lagging V) is displayed on the third line of theCM display.


3.3.14.3 M TA TEST.

1. If you haven’t already done so, perform the above steps to determine the pickup point at the theoreticalMTA. Increase the current slightly to move the impedance further into the region of operation.

2. Press F1 on the voltage module until the cursor flashes below the degree symbol, and increase thephase angle by turning the MODIFY knob clockwise until the relay drops out. Record this value.

3. Decrease the phase angle by turning the MODIFY knob counterclockwise until the relay first picks up,then drops out again. Record the second value. The MTA is the average of the two recorded values.

4. Release the FAULT button or the external start input signal.


1. If you haven’t already done so, perform the above steps to find the pickup point at the actual MTA.Depress the FAULT button and raise the current (or lower the voltage for an impedance relay) until therelay is picked up at the desired point for timing testing.

2. Release the FAULT button to reset the relay.



t control

ove ACown by

ed (i.e.utlines may be

3. Press FAULT momentarily, and release it. The AC voltage and current outputs will seal in until therelay operates. The Trip LED will illuminate and the output readings will be frozen.

4. Record the readings, and press the RESET button to clear the frozen readings. Reset the outpucircuits.

3.3.15 Three Phase Impedance Relay Test

Many of these relays require three-phase voltage, plus at least one phase of current. Some newer devicesrequire three currents as well. A fully equipped system connected as shown is the most efficient way toconduct the test since it minimizes the vector calculations required, and eliminates the need to moutput leads to test all phases of the relay. If the relay requires auxiliary DC power, connect it as shthe dotted lines.

FIGURE 3.21 THREE PHASE IMPEDANCE RELAY TEST

The way in which the AC outputs are applied to the relay depends on the type of fault being simulatΦ-N, Φ-Φ, or 3Φ). In many cases there will be detailed written test procedures available that ospecific voltage and current amplitudes, as well as phase angles to test the relay. These procedurefollowed using the basic vector mode of the MTS-3000.



The advanced 3Φ fault modes (i.e. Φ-N, Φ-Φ, or 3Φ) described below, however, are a more efficient wayto test this type of relay since multiple amplitude and phase angle adjustments can be made with singlecontrol inputs. Refer to the Detailed Operation section of this manual for a full explanation of the advanced

3Φ fault modes.

3.3.15.1 PREPARATION.

1. Some impedance relays require that voltage be kept applied to the voltage circuits throughout the testperiod to keep the internals at operating temperature, while others require the presence of healthynominal voltages prior to the application of a simulated fault. For these reasons, the Prefault modeshould be selected during the test. Press ENABLE until its indicator LED extinguishes, indicating theoutputs are off. Press PREFAULT, if necessary, to select it as indicated by its LED, and verify that allthree voltage amplitudes are at a balanced 69.28V (Φ-N and 120° apart). Adjust, if necessary.

2. Select the desired fault type via the menu, press MENU and, using the F1-F4 buttons on the Control

Module, select Settings, Fault Type, and Φ-Φ, Φ-N, or 3Φ, depending on the relay type being tested.

Press MENU again to exit from the menu. The Control Module display now will be similar to Figure3.22 below.

3. Select Impedance display mode by entering the following key sequence: MENU | Settings | DisplayOptns | Impedance. Press MENU when exiting the menu system. If the test involves a Φ-N element,the zero sequence compensation factor "K-factor" must be entered for the Φ-N impedance calculation.

FIGURE 3.22 IMPEDANCE RELAY TEST DISPLAY

4. Press FAULT to enable programming of the fault values. The fault type selected is displayed as shownin the first segment of the F4 line of the display. The remainder of this line shows the currently selectedfaulted phase(s) to which the fault voltage and current will be applied. Pressing F4 on the CM willrotate the applied fault conditions to the next phase(s). For example, the next selection from the abovedisplay would be B-C.

The phase angle between the fault voltage and current (fault angle) is shown on the F3 line of the CMdisplay. It’s the phase angle that the relay under test sees. Pressing F3 on the CM enables directprogramming of that angle without the necessity of selecting the current or voltage phase adjustmodes, or calculating ‘ indirect’ phase values such as phase-to-phase voltage angles. The impedancefor the selected fault type is displayed on the second line of the CM display.



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Note that, whenever Φ-Φ or 3Φ mode is selected, the value of the phase to phase voltage and curre

displayed on the fourth line of the ACV and ACI module displays. Direct adjustment of the displayedphase to phase quantity can be performed by selecting the F4 button adjacent to the desired outpWFG module. This is a much more efficient method than adjusting the magnitude and phase angles oindividual vectors that sum to form the phase to phase quantity. For example, changing VAB from 1

100V actually changes four parameters: VAN changes from 69.28V, 0.0° to 60.83V, 355.3° , and VBN

changes from 69.28V, 240.0° to 60.83V, 244.7°.

5. Program the initial fault voltage. For the case shown in the display above, pressing F4 on thmodule will allow direct manipulation of the VAB voltage via the MODIFY keypad or rotary knoNote that the VAN and VBN values on lines F1 and F2 will move in sympathy to changes madeVAB output. Choose a voltage value higher than the expected operate value, but lower thnominal prefault value.

6. Program the initial fault current. For the case shown in the display above, pressing F4 on the cumodule will allow direct manipulation of the IAB current via the MODIFY keypad or rotary knNote that the IAN and IBN values on lines F1 and F2 will move in sympathy to changes madeIAB value. Choose a current value lower than the expected operate value.

Note that, for phase-to-phase faults, if at least two current amplifiers are fitted to the current m

the two fault phases of current will be programmed 180° apart, and the fault current seen by the rel

will be twice the individual Φ-G amplitude. This total current value is what appears on line F4 ofdisplay, and is what the relay sees.

7. Program the initial fault phase angle. In most cases this will be the MTA or Maximum Torque APress F3 on the Control Module and enter the phase angle via the MODIFY keyboard or rotaryNotice that, once the value is entered, the phase angles on the current module are updated to rnew setting.

8. Press ENABLE to enable the AC outputs, and press PREFAULT to energize the outputs wprefault conditions.

3.3.15.2 REACH TEST.

1. Press and hold the FAULT button. While holding the FAULT button, select and then lower the vor raise the current (as described above) until the relay operates, as signaled by the illumination of theInput 1 LED, and the operate tone (if selected to on). The reach or impedance value will be dison the second line of the CM display while the FAULT button is held. Release the Fault buttoncomplete.

2. To test at other phase angles, alter the phase angle as described in Step 7 of the previous seagain lower the voltage or raise the current until the relay operates.

3. To check the reach of other phase elements of the relay, select the desired phase by pressing Control Module. This transfers the preset fault values to the selected phase. Repeat Steps 1 arequired.



4. To test other fault elements of the relay (e.g. Φ-G or 3Φ), select the new fault type as described abovein Step 2 of the previous section.

3.3.15.3 M TA TEST.

1. If you haven’ t done so, perform the preliminary steps described in Preparation above, and complete theReach Test described in the previous section to find the reach at the theoretical Maximum TorqueAngle. Decrease voltage or increase current slightly to move the impedance locus within the operatearea of the relay.

2. Enable the voltage-to-current phase angle adjustment by pressing F3 on the Control Module. Energizethe outputs with the Fault button or External Start signal. Increase the phase angle by turning theMODIFY knob clockwise until the relay drops out. Record this value.

3. Decrease the phase angle by turning the MODIFY knob counterclockwise until the relay first picks up,then drops out again. Record the second value.

4. The MTA is the average of the two recorded values.

5. Release the FAULT button or the external start input signal.


1. If you haven’ t done so, perform the preliminary steps described in Preparation above, and complete theReach Test described in the previous section to find the reach at the theoretical Maximum TorqueAngle. Set the phase angle to the MTA.

2. Decrease voltage or increase current slightly to move the impedance setting to the desired percent ofreach for the test.

3. Release the FAULT button or External Start signal to de-energize the AC outputs. Now press theFAULT button momentarily and release. The AC outputs will seal in until the relay operates, freezingthe timer reading on the Control Module, tripping off the AC outputs, and bringing on the TRIP LED.

4. Press RESET to clear the timer and restore prefault conditions.



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3.3.16 Ground Fault Overvoltage Relay

This type of relay uses a voltage element to sense generator zero sequence current, and often hasundervoltage inhibit element. As a result, two voltages, one 3rd-harmonic, and one at the fundafrequency, are required.

FIGURE 3.23 GROUND OVERVOLTAGE RELAY TEST

3.3.16.1 SETUP.

1. Make the test connections, as shown above. Ensure the system is selected for Vector mindicated on the F4 line of the Control Module display. If it isn’t, enter the following key sequeMENU | Settings | Fault Type | Vector, and press MENU again to exit the menu.

2. Disable the AC outputs by pressing ENABLE until its LED turns off, and press FAULT. Adjust thevoltage output above the inhibit level by selecting F2 on the ACV module, and adjusting witMODIFY knob or keypad.

3. Set the frequency of A voltage channel to third harmonic. Press F2 on the Control Module tovariable frequency adjust mode, indicated by illumination of the F2 indicator LED and the text odisplay changing from "Freq:" to "Frq1". Enter a frequency of three times the fundamental frequewith the MODIFY keypad. While the CMs F2 LED is illuminated, press F1 on the voltage moduselect the VA channel to output at frequency 1. Press F2 again to disable the frequency adjust



3.3.16.2 OVERVOLTAGE PICKUP TEST.


2. Enable the AC outputs by pressing ENABLE. Energize the outputs by pressing and holding FAULT.Select A channel voltage by pressing F1 on the voltage module, and raise the voltage with theMODIFY knob until the relay operates.

3. Release the FAULT button.

3.3.16.3 OVERVOLTAGE TIM ING TEST.


2. Press and hold the FAULT button, and turn the MODIFY knob to raise the A channel voltage to thedesired level. Release the FAULT button.

3. Press the FAULT button momentarily and release it. The outputs will seal in until the relay operates,tripping off the outputs and recording the time.

3.3.16.4 UNDERVOLTAGE INHIBIT TEST.

1. To pick up the relay, repeat Steps 1-2 of the Overvoltage Pickup Test section 3.3.16.2 above.

2. Select the channel B voltage adjust mode by pressing F2 on the voltage module. Lower the inhibitelement voltage by turning the MODIFY knob counterclockwise until the relay drops out and restrains.This level is the inhibit threshold.

3.3.17 DC Auxilliary/Time-Delay Relay Test


FIGURE 3.24 DC RELAY PICKUP TEST

1. Ensure the DC voltage output is selected to OFF before connecting the relay, as shown. Press the ONswitch on the DC Volts module, if necessary, until the status LED above it is extinguished.

2. Set the DC voltage to below the expected operate point. Press SET on the DC Voltage module andadjust the DC voltage level, as required, with the MODIFY knob or keypad.



lowly 1 LED

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tact toon thetop

3. Press the DC Volts ON switch to turn on the output voltage, and turn the MODIFY knob to sraise the voltage until the relay operates (or drops out for an undervoltage element). The INPUTwill show the status of the relay contact.


FIGURE 3.25 DC RELAY TIMING TEST

1. Ensure the DC voltage output is selected to OFF before connecting the relay, as shown. Pressswitch on the DC Volts module, if necessary, until the status LED above it is extinguished.

2. INPUT 2 must be configured for TIMER START mode. Press SET on the DIGITAL I/O module, select | Inputs | I/P Channel 2..| TIMER START. Press SET again to exit the menu system.

3. Set the DC voltage to the desired operate point. Press SET on the DC Voltage module, and adDC voltage level, as required, with MODIFY. Press SET again to exit the dcv menu. Press thVolts ON button to turn on the DC output voltage.

4. Press Enable until its LED is on. Press FAULT momentarily. This will cause the output relay conclose and simultanneously apply DC voltage to the relay under test, as well as INPUT #2 DIGITAL I/O module. The presence of voltage on INPUT #2 will start the timer. The Timer will swhen the relay operates. Record the timer reading.


DETAILED OPERATION - Section 4

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DETAILED OPERATION

4.1 FAULT STATES

The MTS operates in one of three unique fault states: Prefault, Fault and Postfault, as indicatedFAULT and TRIP (POSTFAULT) LEDs. A flashing LED indicates that the AC outputs are enabled.

4.1.1 Prefault State

Prefault state is used to simulate power system conditions prior to the occurance of a fault. Underconditions, balanced three-phase voltage and current occur during the prefault period. Many modeprotective relays monitor and use these prefault conditions to determine the type and location of fauWhen testing certain aspects of these types of protective devices, it isn’t sufficient to simply switch no-AC condition to a fault condition. Other types of testing require that no AC be present durinprefault state. Pressing the PREFAULT button while the ENABLE LED is lit enables (prefault LED on)disables (prefault LED off) the AC outputs during prefault.

4.1.2 Fault State

This is used to simulate power system conditions during the fault. Typically one or more phasesvoltage will decrease while the current increases, and the phase angle between the voltage and current willchange during the fault period.

4.1.3 Postfault State

Postfault state is used to simulate power system conditions after the faulted section of the powerhas been isolated from the remainder of the power system. The MTS sets all AC outputs to zero dupostfault period.

4.2 CHARACTERISTICS OF FAULT STATES

The MTS-3000 can output different voltage and current levels, phase and frequency in the prefault astates.

FAULT LED TRIP LED Fault state

OFF OFF PREFAULT

ON or FLASHING OFF FAULT

OFF ON or FLASHING POSTFAULT

PREFAULT FAULT POSTFAULT

AC outputs at prefault settings(or off if prefault disabled)

AC outputs at fault settings AC outputs disabled

Timer=0.0sec Timer running Timer reading frozen

AUX contacts de-energized* AUX contacts energized* AUX contacts energized



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e totails).

*NOTE: It’s possible to change the function and logic of the auxiliary output contact (see section 5

FIGURE 4.1 EXAMPLE OUTPUT SEQUENCE (PREFAULT OFF)

FIGURE 4.2 EXAMPLE OUTPUT SEQUENCE (PREFAULT ON)

4.3 OPERATION MODE - STATIC VS. DYNAMIC

Operation within the three fault states is governed by the selected operation mode, which may be Sor DYNAMIC. Selection of the operation mode is determined by use of the FAULT button. STATIC mis entered via a sustained press of the button, while a momentary press of the button (<250 msprogram the system for DYNAMIC mode.

4.3.1 Static Fault Mode

Static Fault Mode refers to the operation mode used when determining the pickup or operate leveDUT. When the FAULT button is held depressed, the system exits prefault state and enters fault statesystem remains in fault state while the FAULT button is held depressed. As soon as the FAULT buttoreleased, the system returns to prefault state. Transitions between the two states are depicted infollowing diagram. It’s possible to program an external trigger input on the DIGITAL I/O modulcontrol the system in static mode by selecting the FOOT SWITCH option (see section 5.7.1.6 for de

I

V

P O S T FA U LTFA U LTP R E FA U LT

PREFAULT FAULT POSTFAULT

V

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4-2 MTS-3000 OPERATION AND REFERENCE MANUAL######################################################0$17$#7(67#6<67(06###########################################CU M004 01A


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FIGURE 4.3 FAULT STATE DIAGRAM FOR STATIC MODE

4.3.2 Dynamic Fault Mode

Dynamic Fault Mode refers to the operation mode used to perform operate time tests. Pressing the FAULTbutton momentarily initiates dynamic fault mode. In this mode, the timer is started at the moment thoutputs change from their prefault values to their fault values. The outputs remain active until the Doperates, as detected by an input channel on the DIGITAL I/O module. Detection of the TRIP signal frothe DUT freezes the timer and all AC readings, and forces the system into POSTFAULT. All AC oare set to zero during POSTFAULT. If the DUT fails to trip, pressing RESET will force the MTS ofault state.

FIGURE 4.4 FAULT STATE DIAGRAM FOR DYNAMIC MODE

In normal application, the MTS-3000 begins in PREFAULT state. A start trigger action forces a tran

from PREFAULT state to FAULT state. A start trigger action may include momentarily pressing

FAULT button (<250 msec), or a change-of-state as detected by the DIGITAL I/O modules EXTER

trigger inputs configured for FLT (i.e. Start). While in the FAULT state, all start trigger actions wi

ignored.

Once in FAULT state, a stop trigger action will force a transition from FAULT state to POSTFAULT s

A stop trigger action can originate from a change-of-state as detected by the DIGITAL I/O mo

EXTERNAL trigger inputs configured for TRIP (i.e. Stop). While in the POSTFAULT state, all fur

start and stop trigger actions are ignored unless RECLOSURE has been enabled, which can c

MTS-3000 to re-enter the FAULT state.

FAU LTPREFAULT

[FAULT ] LED on[FAULT ] LED off



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From POSTFAULT state, only a reset action will restore the MTS-3000 to the PREFAULT state. Theaction can be initiated by pressing the RESET button.

4.4 TRIGGER/TIMER OPERATION

Transitions between the three fault states is initiated from either the front panel push-button or from esignals connected to the MTS-3010 Digital I/O module. The three possible trigger actions are STARTand RESET. The basic MTS-3010 Digital I/O module provides two sets of external signal input termeither of which can be configured in one of up to eight modes. The default settings configure INPUoperate in the TRIP (i.e. Stop) mode, and INPUT 2 as FLT (i.e. Start) mode. See section 5.7 for furtherdetails on the advanced configurations available.The voltage/current output in the prefault and postfaustates may be set on/off by toggling the [PREFAULT] and [POSTFAULT] respectively.

4.4.1 External Trigger Inputs

The three-terminal inputs of the DIGITAL I/O module allow either external contacts or voltage signaltrigger fault state transitions. The right and centre terminals detect voltage change-of-state. The centre terminals detect contact impedance change-of-state, such as contact closure. In either cchanging of a signal causes a trigger. This could be the disappearance of a signal, thus enablinaction from contact opening/voltage disappearance, as well as the more conventional contact voltage appearance.

The recommended mode is to use voltage sensing whenever possible, since the voltage sensing

don’t inject a voltage of their own into the circuit under test. Voltage output from the impedance term

although of a very high source impedance (50k ohms), may be sufficient to affect operation time of some

sensitive electronic relays.

Up to 300VDC may be applied to any one of the three terminals without damage. AC voltage shoavoided due to the inherent poor timing accuracy caused by its continuous level variation. Input impof either pair is greater than 50k ohms. Each input channel has 300VDC galvanic isolation with ressystem ground and all other inputs and outputs.

4.4.2 Trigger Threshold Levels

The threshold voltage level on the trigger inputs is 10V. This low setting was chosen to accommnewer solid state relays with low voltage logic level outputs. However, this low threshold level may false triggering when working in very noisy environments. Threshold levels may be raised, if reqPlease contact Manta Test Systems for details.

4.4.3 Start Trigger (FLT)

A “start” trigger will initiate a transition from PREFAULT state to FAULT state. Pressing the FAULT buis the most common way to initiate a start trigger. The timer will start synchronously with the transitionPREFAULT to FAULT state. In some cases, it may be desirable to use a external signal to initiatransition instead of the FAULT button. To do so, connect the external start trigger signal to INPUT 2Digital I/O module.



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4.4.4 Stop Trigger (TRIP)

A “stop” trigger will initiate a transition from DYNAMIC FAULT state to POSTFAULT state. Thtransition can be initiated by a voltage or contact change on INPUT 1 of the Digital I/O modules. Thtrigger action is disabled in static operation mode. This eliminates the need to constantly reset thewhen doing tests (such as minimum pickup) which result in numerous STOP triggers. In static opmode, only the trigger LED and tone (if enabled) turn on when a closed contact or voltage is sensedINPUT 1 of the Digital I/O module.

4.4.5 Reset

A “reset” trigger always causes the system to enter the PREFAULT state. It’s normally generapressing the RESET button, but can also be generated by using one of the external trigger inputprogrammed to "RESET". See section 5.7.1.4 for further details.

4.4.6 Timer Start

Normally the timer starts synchronously with the transition from PREFAULT to FAULT. However, sspecialized tests require the timer to start some time after the transition into FAULT state. This accomplished by using one of the external trigger inputs programmed to "TIMER START" modesection 5.7.1.2 for further details.

4.4.7 Two-Wire Pulse Timing

Pulse type operations may be timed using a single pair of sensing leads, connected to one of thetrigger inputs programmed to "PULSE TIMING" mode. The rising edge of a voltage pulse, for exawould cause a timer start trigger, and the falling edge would cause a stop trigger. This allows measuof the duration of a voltage pulse, such as that which would appear on a group of trip auxiliary relaysa trip sequence. See section 5.7.1.3 for further details.

4.4.8 Timing in Cycles

The F1 button on the Control Module toggles the timing reading on the F1 line of the display beseconds and cycles. Timing in cycles is calculated from the timer (seconds) reading and the frequency. If the frequency changes during a test, the time in cycles value will assume that the frehas always stayed at the latest value (time in cycles doesn’t actually count power cycles - it’s a cavalue).

4.4.9 Testing SCR Output Type Relays

Relays with SCR outputs can be tested using the connection diagram shown below. Dynamic opmode should be used. When FAULT is depressed, the fault quantities are applied to the relay, OUTPUT 1 CONTACTS close, allowing current to flow in the SCR when the relay operates. When relay operates, the appearance of voltage across the load trips the stop trigger of the MTS-3000, cto go to the postfault state, and opens the OUTPUT 1 CONTACTS which breaks the SCR current.



urednge.relays,erate

ilable tog

d phaseils.

t

FIGURE 4.5 TEST CONNECTIONS FOR SCR OUTPUT TYPE RELAY

4.5 CURRENT MODES

4.5.1 Current Range

The MTS-3000 has two current ranges which determine how the internal current amplifiers are configto perform different types of testing. Most testing can be done in the default 0-25A, Low Voltage raHowever, some applications, especially older high burden electromechanical ground protection may require the 0-12A, High Voltage mode. If a "Output Clip’ng" alarm appears while trying to genthe required current, select the latter mode by entering the following key sequence: MENU | Settings | ACIRange | 0-12A, High V |

It’s also possible in either of the above modes to parallel as many current channels as are avaachieve higher currents than are available from a single channel. It’s important to note that parallelincurrent channels will deliver more current and more power to the load, but won’t increase the availablecompliance voltage. Parallel operation of multiple current channels requires that the amplitudes anangles of each be set to the same values. See the parallel current mode section 5.2.4 for more deta

* Note that these are all the maximum values available. The individual parameters may peak at differenpoints, and all vary inversely with load impedance.

** These figures represent an MTS-3030 V/I module with both channels configured for current output.

Maximum Current, Voltage, Power Available*

Number of Channels High Current Low Voltage Low Current High Voltage

1 25A, 15V, 150VA 12A, 30V, 300VA

2** 50A, 14V, 250VA 24A, 28V, 400VA

3 75A, 15V, 425VA 36A, 30V, 600VA



urrent,

selected

e ACI

2, and

the

p of the

etting.

FIGURE 4.6 DIFFERENTIAL RELAY HARMONIC RESTRAINT TESTING

4.5.2 HARMONIC Current Mode

This current mode generates a current output which is the sum of a fundamental frequency current, and a

harmonic current. The harmonic may be from 2nd through to 10th harmonic. The fundamental c

percentage harmonic, and phase relationship are adjustable. When a particular output channel is

for harmonic mode, a "h" is appended to its designator on the display. For example, IA will change toIAh

on the first line of the ACI module’s display.

1. Program the fundamental current. For the above example, press FAULT, and then F1 on thmodule to select IA. Enter the desired fundamental current using the modify knob or keypad.

2. Enter the following key sequence to select harmonic current mode for IA: MENU | Settings |Harmonics | ACI 1 ΦA Harm | Fund+Harm.

3. The default harmonic is 2nd. If a higher harmonic is desired, select the line that displays Hrm #enter the desired harmonic with the modify knob or keypad.

4. Now select Ampl n.n%, where n.n is a number you may set for % amplitude of harmonic viaMODIFY knob or keypad.

5. If it’s desired to change the waveshape of the harmonic output by altering the phase relationshi

fundamental to the harmonic, select Phase 0.0° and rotate the MODIFY knob.

6. Press ENABLE, followed by FAULT to activate the outputs.

7. Press BACK to restore the previously displayed harmonic menu for access to the % harmonic s



bine a

or and

as the

4.5.2.1 DEFINITION OF PERCENTAGE HARMONIC.

The total RMS current is defined as:

The percentage of harmonic is defined as:

% nth harmonic = nth harmonic amps x 100

fundamental amps

In the case of 2nd harmonic of 60Hz, which is most often used, this becomes:

% 2nd harmonic = 120 Hz amps x 100

60 Hz amps

This definition yields the same percentage of second harmonic as traditional techniques, which com

60 Hz signal with a half-wave rectified 60 Hz signal. These techniques use the formulas:

% 2nd harmonic = 0.47 IDC x 100 (Westinghouse formula) IAC + 1.11 IDC

% 2nd harmonic = 0.212 IDC x 100 (G.E. formula)

0.45 IAC + 0.5 IDC

where: IAC = 60Hz component in Amps (RMS)

IDC = half-wave rectified component in Amps (average)

Note that the G.E. formula is actually the same as the Westinghouse formula if both numeratdenominator are multiplied by 2.22.

4.5.2.2 SPECIAL NOTES.

For relays with harmonic restraint elements traditionally tested with half wave rectified AC, such

GE BDD 15/16 and ABB HU, see important additional information in Application Note 23.

I trms fundamental current 2 % nth harmonic) fundamental current( )×( )[ ]2+=


ADVANCED OPERATION - Section 5

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TINGS

ADVANCED OPERATION

This section describes the advanced capabilities of the MTS-3000 system, which are accessible vpanel controls. Most of these capabilities are accessible via the Control Module front panel menus. Becauof the unique features of QuickTest, a separate section of the manual is devoted exclusively to it. See6.

5.1 MENU OPERATION

5.1.1 Basic Usage

The menus provide access to a large number of features without adding dedicated controls to tpanels. These features are organized in a hierarchical tree structure. The tree structure can be expthe future to accommodate special requirements of advanced users. Note that, in the following descitalicized text such as Settings refers to text that appears on the display of the Control module.

5.1.1.1 ACTIVATING THE MAIN MENU.

To activate the main menu, press the MENU button. The four-line display above the MENU buttochange, as shown below. Frequently there will be more than four selections available on a given meand, in such cases, the presence of additional selections will be indicated by a or symbol at the end ofthe fourth line or first lines respectively.

The symbol indicates that additional selections lie below the displayed ones, and may be accesrotating the MODIFY knob clockwise. The symbol indicates that the user has reached the end ofavailable selections and must rotate the MODIFY knob counter-clockwise to see the previously disones.

FIGURE 5.1 ROOT MENU

5.1.1.2 SELECTING MENU ITEMS.

To select a menu item, press the Function button corresponding to that line on the menu. In thedisplay, for example, pressing the F1 button would select the SETTINGS option.

5.1.1.3 MENU NAVIGATION.

Working down the menu tree – (Selecting a sub-menu )Menu items with three trailing dots lead to sub-menus. In this example, pressing F1 yields the SETsub-menu.

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 5-1CU M004 01A 0$17$#7(67#6<67(06


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Working up the menu tree

Pressing the BACK button while in the menu will return you to the previous menu. Pressing the B

button when not in the menu will return you directly to the last visited menu screen.

Selecting a multiple option parameterThe ♦ symbol is used to indicate the currently selected item in a list of possible options. In this exampthe F3 key is pressed to change the external input channel 1 mode from TRIP to FLT.

Selecting a parameter for numeric inputIf a menu item requires numeric input (e.g. start value of the voltage ramp), the LED associated with tfunction button will illuminate when selected, and a cursor will blink next to the existing numbers odisplay. To make an adjustment to the value, rotate the MODIFY knob or use the MODIFY keyboa

Exiting the menu:

The MENU button may be pressed again at any time to exit from the menu.

5 H V H W # W R #5 H V H W # W R #5 H V H W # W R #5 H V H W # W R # ' H I O W V' H I O W V' H I O W V' H I O W V) D X O W #) D X O W #) D X O W #) D X O W # 7 \ S H # «7 \ S H # «7 \ S H # «7 \ S H # «+ D U P R Q L F V «+ D U P R Q L F V «+ D U P R Q L F V «+ D U P R Q L F V «3 D U D O O H O # «3 D U D O O H O # «3 D U D O O H O # «3 D U D O O H O # « #### # # ## # ## # ## # # ø

6 H W W L Q J V6 H W W L Q J V6 H W W L Q J V6 H W W L Q J V ««««4 X L F N 7 H V W4 X L F N 7 H V W4 X L F N 7 H V W4 X L F N 7 H V W # «# «# «# «3 U H I H U H Q F H V # «3 U H I H U H Q F H V # «3 U H I H U H Q F H V # «3 U H I H U H Q F H V # «, Q G H [ # « # #, Q G H [ # « # #, Q G H [ # « # #, Q G H [ # « # # # # # # # # ## # # # # # ## # # # # # ## # # # # # #ø

SETTINGS sub-menu

BACKROOT MENU

& K D Q Q H O #& K D Q Q H O #& K D Q Q H O #& K D Q Q H O # 4444♦ 7777 5 , 3 # +5 , 3 # +5 , 3 # +5 , 3 # + L H # 6 W R S ,L H # 6 W R S ,L H # 6 W R S ,L H # 6 W R S ,# # ) / 7 # # +# # ) / 7 # # +# # ) / 7 # # +# # ) / 7 # # + L H # 6 W D U W ,L H # 6 W D U W ,L H # 6 W D U W ,L H # 6 W D U W ,# # 7 , 0 ( 5 # 6 7 $ 5 7# # 7 , 0 ( 5 # 6 7 $ 5 7# # 7 , 0 ( 5 # 6 7 $ 5 7# # 7 , 0 ( 5 # 6 7 $ 5 7 ø

& K D Q Q H O #& K D Q Q H O #& K D Q Q H O #& K D Q Q H O # 4444 7 5 , 3 #7 5 , 3 #7 5 , 3 #7 5 , 3 # ++++ L H # 6 W R SL H # 6 W R SL H # 6 W R SL H # 6 W R S ,,,,♦ ) / 7 # # +) / 7 # # +) / 7 # # +) / 7 # # + L H # 6 W D U W ,L H # 6 W D U W ,L H # 6 W D U W ,L H # 6 W D U W ,# # 7 , 0 ( 5 # 6 7 $ 5 7# # 7 , 0 ( 5 # 6 7 $ 5 7# # 7 , 0 ( 5 # 6 7 $ 5 7# # 7 , 0 ( 5 # 6 7 $ 5 7 ø

9 R O W D J H # 5 D P S =9 R O W D J H # 5 D P S =9 R O W D J H # 5 D P S =9 R O W D J H # 5 D P S =6 W D U W # 9 < 1 5 ; 3 # 96 W D U W # 9 < 1 5 ; 3 # 96 W D U W # 9 < 1 5 ; 3 # 96 W D U W # 9 < 1 5 ; 3 # 9( Q G # 4 3 3 1 3 3 # 9( Q G # 4 3 3 1 3 3 # 9( Q G # 4 3 3 1 3 3 # 9( Q G # 4 3 3 1 3 3 # 95 D W H # 4 3 1 3 3 # 9 2 V5 D W H # 4 3 1 3 3 # 9 2 V5 D W H # 4 3 1 3 3 # 9 2 V5 D W H # 4 3 1 3 3 # 9 2 V

9 R O W D J H # 5 D P S =9 R O W D J H # 5 D P S =9 R O W D J H # 5 D P S =9 R O W D J H # 5 D P S =6 W D U W # 9 < 1 5 ; 36 W D U W # 9 < 1 5 ; 36 W D U W # 9 < 1 5 ; 36 W D U W # 9 < 1 5 ; 3 ____ 9999( Q G # 4 3 3 1 3 3 # 9( Q G # 4 3 3 1 3 3 # 9( Q G # 4 3 3 1 3 3 # 9( Q G # 4 3 3 1 3 3 # 95 D W H # 4 3 1 3 3 # 9 2 V5 D W H # 4 3 1 3 3 # 9 2 V5 D W H # 4 3 1 3 3 # 9 2 V5 D W H # 4 3 1 3 3 # 9 2 V

Blinking cursor

5-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06 CU M004 01A


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Re-entering the previously or last visited menu screen:Pressing the BACK button while in the menu will return you to the previous menu. Pressing the Bbutton when not in the menu will return you directly to the last visited menu screen.

Additional features:Both the FAULT and RESET button are enabled while the menu is active. This is useful for doingsuch as response time checks, power swing, or df/dt relay elements, in which some menu acparameters must be adjusted between trials.

Menu tree maps:The menu tree maps on the following pages show the majority of menu selections available. In some cthe selections available are very similar but too numerous to list fully without causing congestion map (e.g. the 10 different baud rates available for the RS232C serial ports). In these cases, only the initial and final options are shown, separated by three dashes (---). Where numeric input is reqcomplete a selection, the map shows an n to indicate a number, followed by the expected range of numinput in brackets. For example, Voltage Ramp: Start n.nV (0.0-150.0) means that, if this option is selectedthe user is expected to input a value between 0.0 and 150.0 volts.



FIGURE 5.2 MENU TREE SETTINGS

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5.2 SETTINGS

The settings sub-menu provides access to the advanced user programmable features of the MTS-3parameters in this sub-menu are reset to their default values on power-up.

5.2.1 Reset to Defaults

The first option within the settings submenu is Reset to Dflts, (Reset to Defaults). This selection is convenient way to simulate ‘rebooting’ the MTS-3000, subsequently resetting all settings to their defaultpower-up status.

Settings Default Value

Fault Type Vector mode

Harmonics Off

Parallel Disabled

Ramps Disabled

Frequency 2 Synchronized to LINE

Breaker Times 0.00 ms

Current range High current

Reclose Disabled

FIA Random

Maximum fault duration Infinite

Display Options Frequency & Phase angle

5.2.2 Fault Type

The fault type selection allows the MTS-3000 to operate in one of four operational modes: Vector, Φ-N, Φ-Φ, and 3Φ. The operation of the MTS is optimized to suit the particular test to be performed by selethe appropriate fault type.

5.2.2.1 VECTOR MODE.

Vector mode is the most basic method for operating the system. The amplitude and phase relationeach AC output must be individually programmed and modified. It may be used for single-phase tesfor polyphase testing where there are already detailed step-by-step instructions available, which include thenumerical phase and amplitude settings for all outputs.

5.2.2.2 ΦΦΦΦ-N, ΦΦΦΦ-ΦΦΦΦ, 3ΦΦΦΦ MODE.

Φ-N, Φ-Φ, and 3Φ fault modes are advanced operating modes which automate many of the adjus

necessary in polyphase work. Complex adjustments, such as the four parameters which must be

simultaneously to simulate a phase-to-phase voltage collapse in a 3Φ system, can be controlled by a sing

MODIFY knob adjustment or keypad input.



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5.2.3 Harmonics

This submenu offers the ability to program any AC output channel with one of several forms of harmodistortion. This is a requirement for testing certain relay types, such as transformer current differential orgenerator stator ground, which rely on the detection of specified harmonics to reliably protect againsACV1 ΦA Harm refers to the A phase of the #1 AC Voltage module (it’s possible to have more thaVoltage module in a stack). ACI1 ΦC will subsequently refer to the C phase of the #1 Current module.

5.2.3.1 HARMONICS OPTIONS.

These include Harmonics OFF (the default state), Harm.[onics] Alone, and Fund[amental] + Harm.[onic].

The last option is the one most commonly used for verifying the second harmonic inrush restraint

of transformer current differential protection relays. The programmable settings available for this selection

are:

Harmonic # 2nd to 10th

Harmonic amplitude 0 to 50% (*based on classical formula, see below)

Phase angle 0.0 to 359.9° (relative to fundamental)

* The traditional way to produce second harmonic content to test the harmonic restraint feattransformer differential current relays was to combine pure AC current (Iac) measured with an RMSresponding meter with ½ wave rectified DC current (Idc) measured with an average responding me

The resulting harmonic content can then be calculated from:

% 2nd Harmonic = ((0.424 Idc)/ (0.9Iac + Idc )) x 100

5.2.4 Parallel Current

This option may be accessed when it’s desired to output more AC current than can be produced by

current channel. It’s possible to achieve this result manually by setting the phase angle on each pa

channel to the same figure, and setting the amplitudes the same. It’s more convenient and faster, h

to use this option since it will automatically synchronize the phase angles, adjust all paralleled c

amplitudes simultaneously with a single MODIFY input, and display the total paralleled current available

on the fourth line of each current module.

Before selecting this option, verify that the fault mode has been selected for Vector mode or Φ-N mode, asindicated in the lower left corner of the main display. The Φ-Φ and 3Φ fault modes inherently are designeto manipulate currents with three different phase angles. If the fault type is currently selected for Φ-Φ or3Φ fault type, enter the following key sequence: MENU | Settings | Fault Type | Vector.

Because it’s possible to have more than one current module in a stack, provision has been made to alfor up to three individual paralleled current groups, and any one current channel can be assigned tthe three possible groups. This assignment process is shown in the illustration on the next page.

###



. Note

hannelnel andut and, and

ance

FIGURE 5.3 PARALLEL MENU

FIGURE 5.4 PARALLEL CONNECTION

In the example shown above, current module #1 channels A and C will be paralleled, in group #1that it will be necessary to provide an external wire from each channel’s output when they’re paralleled.The menu selection only synchronizes amplitude, phase and control of the parallel channels.

For very high currents, the best results will be obtained by running a connecting lead from each cdirectly to the load rather than making the parallel connections at the output terminals of one chanrunning a single wire from that point to the load. Individual leads taken to the load on both the outpreturn paths from each amplifier will minimize the compliance voltage drop at the load terminalsminimize the risk of damaging a single connector due to overcurrent.

For high impedance loads where this still doesn’t produce the desired load current without producing a"Output x Clip’ng" alarm, it may be necessary to configure the current amplifiers for higher complivoltage using the ACI Range option, as detailed in section 5.2.8.

5.2.5 Ramps

Simultaneous and independent ramping of the following four parameters is possible:

Frequency 8.0 to 1000 Hz @ 0 to 10 Hz/second

Phase (V-I) 0.0 to 359.9° @ 0 to +/-2000 °/second

Fault Voltage 0.0 to 150.0 @ 0 to 2000 V/second

Fault Current 0.0 to 25.00 @ 0 to 500 A/second

Note that, as an advanced feature, ramping isn’t available in the simplified Vector mode. Φ-N, Φ-Φ, or 3Φfault mode must be selected first.



causesing is

le/disable final

on theign the

voltageat the 0/nd stopoduce

bleeeckection

ifferentcy.

Ramping occurs only in Fault mode. Initiating Fault mode from an external trigger or manual start the four parameters to instantly change to the initial fault values. For each parameter, if rampprogrammed, the parameter will ramp at the programmed rate until the final value is reached. At any pointin the sequence, a stop trigger may occur, forcing the system from FAULT to POSTFAULT.

Each parameter has its own submenu, and the main ramping submenu has a master ramping enabselection. If the final value is set to less than the initial value, the parameter will ramp down. If thevalue is set to greater than the initial value, the parameter will ramp up.

5.2.5.1 FREQUENCY RAMPING.

Frequency ramping is only available in variable frequency mode. If Freq Ramp doesn’t appear on themenu, exit from the menu by pressing MENU, select variable frequency mode by pressing F2 Control module, and press the Function buttons of the output channels to which it’s desired to assvariable frequency.

5.2.5.2 PHASE RAMPING.

The phase which is modified during phase ramps is the phase angle relationship between the ACand current outputs - not the phase angle of any individual output. Because phase angle rolls over 360° point, it’s necessary to specify what direction the phase angle ramps between the start avalues. Rotating the MODIFY knob counterclockwise during phase ramp rate programming will prnegative ramp rates.

5.2.5.3 VOLTAGE RAMPING.

In Φ-N and 3Φ modes, the ramp rate is specified in Φ-N volts per second. In Φ-Φ mode, the ramp rate is inΦ-Φ volts per second.

5.2.5.4 CURRENT RAMPING.

In Φ-N and 3Φ modes, the ramp rate is specified in Φ-N amps per second. In Φ-Φ mode, the ramp rate isin Φ-Φ amps per second. Paralleled current ramping is available only in Φ-N fault mode.

5.2.6 Frequency 2

By default, all AC channels are locked to mains frequency. Any channel can be assigned a varia(internally generated) frequency, and it’s possible to have two different variable frequencies present at thsame time. For most applications requiring two frequencies simultaneously, such as testing synchrochrelays, it will be sufficient to use mains frequency, plus one internally generated frequency (see S3.3.13 for further details). The internally generated frequency selected by Control module function switchF2 (as described in 3.3.13) is known as Frequency 1. It’s possible to program Frequency 1 for dvalues in prefault and fault modes for cases where it’s desired to generate a step change in frequen



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The menu-driven Frequency 2 option normally only will be required where it’s desired to have twointernally-generated frequencies simultaneously. This would be the case where the mains frequencsomewhat unstable as, for example, when a portable generator is supplying the mains. In this eveprogram Frequency 1, as above, and assign it to one or more outputs, as required. The remainingwill be at line frequency, but will change to Frequency 2 when programmed by the Frequency 2 menuoption.

5.2.7 Breaker Times (Bkr Times)

This feature facilitates an accurate simulation of power system performance by delaying the trippreclosing of AC outputs by a specified time to account for the operate time of a circuit breaker. In tworld, an overcurrent situation, for example, doesn’t clear immediately upon operation of a relay cresponding to the overcurrent, but when the main contacts of the circuit breaker controlled by that open. This feature can be particularly useful in verifying the operation of breaker failure protection sys

5.2.8 AC Current Range (ACI Range)

There are two fixed ranges of compliance voltage available from the current output channels of the By default, the system is configured for high current, low compliance voltage. Most current-operatedrelays are specifically designed for low impedance burden. Subsequently, for the majority of applicatiincluding virtually all modern microprocessor-based relay testing, the default configuration of the sis the best choice since it offers the highest possible current.

There are some applications, however, particularly electromechanical ground protection relays, whipresent significant burdens, as much as 25 ohms. These devices usually have lower current settings, buttheir high burden can make it difficult to pass current through them. It would take a 20 V source tjust 1 A through a 20 ohm relay, for example.

The default current range of the MTS current sources supplies 25 A per channel at up to 15 V. Whenevthe product of the combined test lead impedance plus relay impedance, times the current output, exceeds15 V, a "Output x Clip’ng" alarm subsequently will be generated and current distortion will increase. that paralleling current outputs for this situation won’t resolve the problem since the total compvoltage of current channels operated in parallel doesn’t increase above that of a single channel.

To select the high compliance voltage range, enter the following key sequence: MENU | Settings | Currentrange | 0-12A, High V. Note that the compliance voltage available will be doubled at the expensreducing, by 50%, the amount of current available. Maximum current will be 12 A at up to 30 Vparticularly important to use securely fastened high quality large gage test leads if experiencing prin testing into high burden loads.

5.2.9 Reclose

This feature allows a variety of reclosure scenarios to be programmed.

Shots determines the number of times a reclosure will be initiated before locking out from further opewhen using the "internal" reclose option.



ected

igital

.

ng theplay can

lt, a. This high-int-on-Fault

nsnsitivee faultine the

isplay.

tage to

External Input specifies that reclosure will be initiated from the protective relays "close" signal conn

to a input trigger on the Digital I/O module. Refer to Section 5.7 for information on programming a D

I/O input.

Internal option allows up to six reclose shots of individually specified time delays to be programmed

Meas’d Times (Measured Times) displays the times at which each trip and reclosure occurred duriprogrammed reclose sequence. This can be useful since the main timer on the Control module disonly display a single time.

5.2.10 Fault Incidence Angle (FIA )

FIA allows the user to specify the Fault Incident Angle at which a fault is initiated. By defauprogrammed fault output appears shortly after a manual or external fault initiate trigger is appliedmeans that the point on the AC waveform at which the output begins will vary from test to test. Forspeed electronic relays that use zero-crossing information to determine tripping criteria, random powave fault applications can result in up to eight milliseconds variation in trip time. Specifying the Incident Angle with this option will ensure all faults initiate at the same point on the waveform.

5.2.11 Maximum Fault Duration (Max Flt Dur)

This option allows the user to specify the precise time duration of fault output. It can be useful in situatiosuch as verifying the pickup level of one zone of a multi-zone impedance relay where other more sezones which operate the same output trip terminals have time delayed operation. By setting thapplication time to be less than the time delay of the more sensitive zones, one can quickly determoperate level of the less sensitive zone.

5.2.12 Display Options

This option allows the user to select from a list of optional display modes for the control module dFor example, selecting the ‘Impedance’ option changes the 2nd line of the CM display from Frequency toImpedance.

5.2.12.1 DEFAULT DISPLAY (Hz & φφφφ)

This is the default power-up display mode. Frequency is displayed on line 2, and the faulted volcurrent phase angle is displayed on line 3.

7 L P H = # # 3 1 3 3 3 # V H F7 L P H = # # 3 1 3 3 3 # V H F7 L P H = # # 3 1 3 3 3 # V H F7 L P H = # # 3 1 3 3 3 # V H F) U H T = # # / , 1 () U H T = # # / , 1 () U H T = # # / , 1 () U H T = # # / , 1 (φφφφ 9 0 , = # # # 3 1 39 0 , = # # # 3 1 39 0 , = # # # 3 1 39 0 , = # # # 3 1 3 °9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $



lay.

t as the

he two

change

lt

nd fault. theK.

5.2.12.2 SLOPE.

The slope display option is used when testing the slope characteristic of a transformer differential re

Slope is defined as: Slope = Ioperate / Irestraint,

Where Ioperate is the difference current: Iop = |I1 – I2|,

The formula for restraint current is dependent on the relay type.

Three Winding Relays (3 wdg BDD style).

Three coil T-connection electromechanical relays (see Figure 3.16) calculate the restraint currenaverage of the two restraint currents:

Irestraint = (I1+I2) / 2 for 3 wdg BDD style relays

Two Independent Coil Relays ( 2 wdg style).

Modern two independent coil type differential relays (see Figure 3.17) typically use the greater of trestraint currents.

Irestraint = Max ( I1, I2) for 2 wdg 87T style relays

5.2.12.3 IMPEDANCE.

The Impedance option is used when testing distance or impedance relays. The formula used will

automatically depending on the fault mode the MTS-3000 is in.

Phase to neutral faults (φφφφ-N) Z1 = V / (I + KI)

This display mode displays the positive sequence impedance (Z1) for phase to ground faults. Ground fau

impedance relays are required to respond to the positive sequence impedance of a line to grouHowever, they’re supplied with φ-N voltage and phase current, plus a determined proportion ofresidual current. This proportion of the residual current is the zero sequence compensation factor,

7 L P H = # # # 3 1 3 3 3 # V H F7 L P H = # # # 3 1 3 3 3 # V H F7 L P H = # # # 3 1 3 3 3 # V H F7 L P H = # # # 3 1 3 3 3 # V H F6 O R S H = # # 5 4 1 3 : #6 O R S H = # # 5 4 1 3 : #6 O R S H = # # 5 4 1 3 : #6 O R S H = # # 5 4 1 3 : # (φφφφ 9 0 , = # # # # 3 1 39 0 , = # # # # 3 1 39 0 , = # # # # 3 1 39 0 , = # # # # 3 1 3 °°°°9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $

7 L P H = # # # 3 1 3 3 3 # V H F7 L P H = # # # 3 1 3 3 3 # V H F7 L P H = # # # 3 1 3 3 3 # V H F7 L P H = # # # 3 1 3 3 3 # V H F, P S H G =, P S H G =, P S H G =, P S H G = #### 7 1 : 8 67 1 : 8 67 1 : 8 67 1 : 8 6 ΩΩΩΩφφφφ 9 0 , = #9 0 , = #9 0 , = #9 0 , = # #### # : 8 1 ; 5# : 8 1 ; 5# : 8 1 ; 5# : 8 1 ; 5 °°°°φφφφ 0000 1 = #1 = #1 = #1 = # ) O W # 3 K D V H # $) O W # 3 K D V H # $) O W # 3 K D V H # $) O W # 3 K D V H # $



location

Consider an A-phase to ground fault. The voltage seen by the relay is:

VA = I1 Z1 + I2 Z2 + I0 Z0

Ιf we make assumptions that the fault impedance is zero, and that the faulted line isn’t mutually coupled to

another 3Φ line, and that there are no other sources of zero sequence current between the relaying

and the fault, the Z1 from the relay to the fault is:

Z1 = VA IA + K I0

where I0 = IA + IB + IC (residual current)

K = Z0 - Z1 (zero sequence compensation factor) 3 Z1 (In this equation for K, Z1 and Z0 are the positive and zero sequence impedances respectively of the entire line)

For relay testing, we generally set current in the unfaulted phases to zero, and assume that Z1 and Z0 for the

line are at the same angle. If we make these assumptions, the formula for Z1 generalized for any phase

reduces to:

Z1 = V (positive sequence impedance seen by the relay) I(1 + K)

Phase to phase faults (φφφφ-φφφφ) Z = V / I

This mode displays the positive sequence impedance (Z1) for phase to phase faults.

Z = V / I Where: V = φ-φ voltage

I = φ-φ current

Three Phase faults (3φφφφ) Z = V / I

This mode displays the positive sequence impedance (Z1) for three phase faults.

Z = V / I Where: V = φ-N voltage

I = φ-N current



e CM –

anual is

5.2.12.4 FREQUENCY & V/Hz.

This display mode is used when testing VOLTS-PER-HERTZ relays.

V/Hz = Fault voltage / Fault frequency

5.2.12.5 FREQUENCY & SLIP.

This display mode is used when testing synchronizing or synchro-check relays. The third line of thdisplay is replaced with “S 0.000Hz 0.0°” where the first value “S” = the Slip frequency (frequency 1frequency 2), and the second value is the phase angle difference between the two frequencies.”

5.3 QUICK TEST

As noted above, because of the unique nature of Quick Test, an entire separate section of this mdevoted to it. Refer to Section 6.

7 L P H = # 3 1 3 3 3 # V H F7 L P H = # 3 1 3 3 3 # V H F7 L P H = # 3 1 3 3 3 # V H F7 L P H = # 3 1 3 3 3 # V H F) U H T = # 8 < 1 < < ; # + ]) U H T = # 8 < 1 < < ; # + ]) U H T = # 8 < 1 < < ; # + ]) U H T = # 8 < 1 < < ; # + ]6 # 3 1 3 3 3 + ] # 4 3 1 :6 # 3 1 3 3 3 + ] # 4 3 1 :6 # 3 1 3 3 3 + ] # 4 3 1 :6 # 3 1 3 3 3 + ] # 4 3 1 : °°°°9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $

7 L P H = # 3 1 3 3 3 # V H F7 L P H = # 3 1 3 3 3 # V H F7 L P H = # 3 1 3 3 3 # V H F7 L P H = # 3 1 3 3 3 # V H F) U H T = # 8 < 1 < < ; # + ]) U H T = # 8 < 1 < < ; # + ]) U H T = # 8 < 1 < < ; # + ]) U H T = # 8 < 1 < < ; # + ]9 2 + ]9 2 + ]9 2 + ]9 2 + ] = # # # 4 1 3 5= # # # 4 1 3 5= # # # 4 1 3 5= # # # 4 1 3 59 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $9 H F W R U # 5 R W D W H # $



FIGURE 5.5 MENU TREE: PREFERENCES

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5.4 PREFERENCES

This area of the menu deals with user preferences that retain their settings after power down of the MTS-3000. Examples include parameters such as baud rate and LCD contrast.

5.4.1 Button Tone

By default, there’s a tone generated at each press of a button to indicate to the user that the desireinput was accepted. This option allows the tone to be switched off.

5.4.2 VI Module #1

This selection only appears if the system is equipped with an MTS-3030 Voltage/Current module. It the selection of voltage or current mode for either output channel.

5.4.3 VI Module #2

This selection only appears if the system is equipped with two MTS-3030 Voltage/Current modules. Itallows the selection of voltage or current mode for either output channel.

5.4.4 COM 1 RS-232

This selection allows configuration of the RS-232C communication parameters for the COM 1 seri

on the back panel of the Control module.

Baud Rate is normally set to the highest speed that can be reliably sustained by the computer conne

the port. If communication isn’t reliable at a given speed, select the next lowest speed listed.

Stop Bits (1 or 2) will be determined by the software being used to communicate with the system.

Parity (Even, Odd, or None) will be determined by the software being used to communicate wisystem.

Flow Control (Software, Hardware, None) may be determined by the software being used to commuwith the system.

5.4.5 COM 2 RS-232

Essentially identical to the previous selections, except that it’s applied to the COM 2 serial port. applications may take advantage of the second serial port to pass data on to serial interfaced protectiwhen the computer being used is equipped with only one serial port.

5.4.6 Assign Ports

This allows the reports generated by Quick Test to be output via COM 1, COM 2, or the Printer port (The default assignment is LPT1.


#######


timum

5.4.7 LCD Contrast

This allows the contrast on each of the LCD main displays in the system to be adjusted for oplegibility.



FIGURE 5.6 MENU TREE: INDEX/OTHER

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5.5 INDEX

This is a useful, alphabetically arranged menu which allows the user to identify and go directly to any of theoptions within the entire menu structure. Often a user may remember that a certain feature is availadoesn’t remember within which submenu it’s located. A less experienced user may not be aware oenhanced features that are available. In either case, use of this feature enables the entire menu capbe reviewed by scrolling through it alphabetically. Once the desired option is located, press the Fbutton associated with the line on which it’s listed, and the submenu in which it is found will appear.

5.6 OTHER

This collection of features are used for diagnostic and calibration purposes:

5.6.1 Version

This lists the version and date of installed firmware and hardware. Information of this nature mrequired by a factory support person to help resolve an operational problem.

5.6.2 Calibration

The Calibration option provides access to the calibration menu, which is necessary to calibrate the disystem output readings. To prevent inadvertent corruption of these calibration factors, a password entered before access is authorized. Persons qualified to perform calibrations of the required accuracy macontact the factory for assistance in unlocking this feature.

5.6.3 Printer Test

This option will send a predetermined test message to a printer connected to the printer port. It mayto verify the printer is functional and connected correctly prior to any data being collected by Quick Test

5.6.4 Diagnostics

A variety of diagnostic codes and information may be displayed here. This feature is provided to a

remote diagnosis by a factory support person.



FIGURE 5.7 MENU TREE: DIGITAL I/O

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5.7 DIGITAL I/O

This menu appears whenever the SET button on the Digital I/O module is pressed. It offers a variety of waysto configure the inputs and outputs of the module.

5.7.1 Input Channel 1 (I/P Chan 1)

For most test applications, this channel will be configured as the relay operation detection or trip inpuit’s provided with an LED indicator and can [optionally] be provided with a DC current output to opDC current targets. The left two terminals sense change of state of relay contacts, while the right twchange of state of voltage signals. Additional information on operation of the inputs as triggers is containein section 4.4 Trigger/Timer Operation.

5.7.1.1 TRIP (ie STOP).

This is the default setting of Input 1. As described in 5.7.1 above, it’s intended to sense external opof a unit under test, and trip the MTS from fault to postfault state. Appearance of a trip signal in thisalso will freeze the output readings and the timer.

5.7.1.2 EXTERNAL START (FLT (ie Start))

This selection programs the input to act as an external start trigger, permitting an external contact/signal to initiate the same action as pressing the FAULT button. This starts the timer running and sthe AC outputs from prefault to fault state.

5.7.1.3 Pulse Timing.

The Pulse Timing selection programs the input to measure the duration of a one-shot pulse, sucsealed-in trip output signal from a protective relay system. The first transition of the signal starts thewhile the next transition stops it.

5.7.1.4 Reset.

This selection programs the input to respond to an external signal as a reset trigger, initiating the samas pressing the RESET button. This resets the timer, unfreezes the output readings, and returns the systeto prefault state.

5.7.1.5 Reclose.

The Reclose selection programs the input to respond to an external signal as a reclosure initiation trworks along with the programmable reclosure features described above in 5.2.9.

5.7.1.6 Foot Switch.

This selection programs the input to accept an external foot switch as a fault initiate trigger in Static(i.e. the outputs will be maintained as long as the input signal is sustained). See Section 4.3 forinformation about operation modes.



ciatedr.

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5.7.1.7 Off.

This selection programs the input to ignore all input signals. The LED continuity indicator and assoaudio tone on input 1 will continue to function, but no trigger actions, as described in 5.7.1, will occu

5.7.2 Input Channel 2 (I/P Chan 2)

Programming options for this channel are identical to those described above in 5.7.1 for Input 1.

5.7.3 Input Debounce (I/P Debounce)

This selection allows debounce filtering to be applied to input trigger signals from Input 1 and 2. contacts frequently bounce upon making (i.e. close and open repeatedly). Since other devices enerthe relay contact require the energizing signal to be maintained for a minimum time before they’ll opit can be useful to set the inputs to ignore a trigger signal that’s maintained for less than the mioperate time of the energized device. The filtering may be adjusted from 0.1 msec to 999 msec.

5.7.4 DC Current (IDC)

The DC Current optional feature permits programming the level of a DC current which will flow viatwo left terminals of Input 1 to an external DC current-operated target. These targets are sometimesolder electromechanical protective relays to indicate circuit breaker trip coil current has passed throrelay contacts. Typical current target settings are 200 ma or 2 A. Once programmed, the curcontrolled by the ON switch on the Digital I/O module.

5.7.5 Output Channel 1 (O/P Chan 1)

The OUTPUT 1 relay contacts (see Figure 3.2) can be used for a variety of applications, such as simof circuit breaker auxiliary contacts. The various operation modes control the operation of the relatacts. The default setting is FAULT (NO).

5.7.5.1 FAULT (NO)

This is the default setting of Output 1. In this mode, the contacts are as shown on the front panePREFAULT. The contacts change state upon entering FAULT state.

5.7.5.2 /FAULT (NC)

In this mode, the contacts are opposite to that shown on the front panel during PREFAULT. The cchange state upon entering FAULT state.

5.7.5.3 Breaker Open (BKR OPEN: 52B)

In this mode, the contacts simulate a 52B circuit breaker auxiliary contact. The contacts are as showfront panel during PREFAULT and FAULT. They change state upon entering POSTFAULT state.



,enteringhannel

e, thete uponication

lating

, of theve an

5.7.5.4 PERMISSIVE.

In this mode, the OUTPUT contacts simulate a permissive transfer trip signal. When in permissive modethe contacts are as shown on the front panel during PREFAULT. The contacts change state upon FAULT state. The OUTPUT contact change-of-state can be delayed to simulate communication cdelay time by entering in an appropriate delay via the Output Delay time. See 5.7.6.

5.7.5.5 UNBLOCK.

In this mode, the OUTPUT contacts simulate a trip-unblock transfer signal. When in unblock modcontacts are opposite to that shown on the front panel during PREFAULT. The contacts change staentering FAULT state. The OUTPUT contact change-of-state can be delayed to simulate communchannel delay time by entering in an appropriate delay via the Output Delay time. See 5.7.6.

5.7.5.6 Off.

This selection disables the output contact.

5.7.6 Output Delay (O/P Delay)

The Output Delay setting allows accurate simulation of communication channel delay when simueither a permissive or unblock signal.

5.7.7 Version

This selection reports the installed software and hardware versions, and module identity numberDigital I/O module. This information may be required by a factory support person to help resoloperational problem.


QUICKTEST - Section 6

ernal

and

ee the

QUICKTES T

The QuickTest feature provides automated testing for most common protective relays. An extcomputer is not required. Test results are displayed on the front panel. A test report that includes the relayand test settings, as well as the test results in tabular form, can be printed via the built-in printer port orsaved to a file if a PC is available.

6.1 ADVANTAGES OF QUICKT EST

• Very easy to use

• Increased productivity

• Consistent test method yields consistent test results

• Printed test report eliminates transcription errors

• Tests the relay with actual in-service settings

• External PC and software is not required• User-definable test parameters (e.g. # of test points)

6.2 QUICKT EST ALGORITHMS

1φ Over Current

1φ Over Voltage

1φ Under Voltage

1φ Impedance

1φ Directional Over Current

1φ Power

3φ Over Current

3φ Over Voltage

3φ Under Voltage

3φ Impedance

3φ Directional Over Current

3φ Power

DC Auxili aryDifferential Frequency Ground Fault Over VoltageNegative SequenceSynchronizingVolts-Per-HzZero Sequence

The number of QuickTest algorithms available depends on the optional hardware that’s installedsubsequently detected at power up. For example, if no AC voltage modules are in a particular stack, thenQuickTest algorithms, such as Over Voltage, Under Voltage and Impedance, won’t be available. Sdetailed QuickTest descriptions for hardware requirements. When using the MTS-3030 (convertiblevoltage / current module), the output mode (i.e. voltage vs. current) may be changed automatically byQuicktest to meet the necessary hardware requirements for the Quicktest algorithm.



nteredser toing theder the

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peat the

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6.3 QUICKTEST TERMINOLOGY AND ABBREVIATIONS

CM – control module

Hook-up – the wiring connections required between the MTS and the relay under test

MTS – modular test system

Relay ID – a unique, five digit identification number used to identify a particular relay

Stack - the optional modules that are combined to make up a particular MTSWFG – waveform generation module i.e. MTS-3030, MTS-3040, MTS-3060

6.4 SUMMARY OF OPERATION

To use QuickTest, the user begins by selecting the appropriate relay type from the list of QuickTestalgorithms found under “Quick Test” in the main menu. The settings applied to the relay are then einto QuickTest via the modify keypad on the Control module. The test settings menu allows the ucustomize the test conditions (e.g. number of test points, maximum test current, etc.). After entertest settings, the user connects the relay to the MTS according to the hook-up information found un“Hookup info” menu item. The next step is to select the desired test from the list found under “ExecuteTest”.

As each test proceeds, various messages will be shown on the CM display. These messages desc

user what the test set is doing at each step of the way (e.g. “Attempting to operate relay by ramping current

up”.

When the test has ended, the results can be viewed on the CM display and / or printed if a prconnected to the Printer port (found on the rear panel of the control module). If desired, the testalso can be saved to a PC via the RS-232 port.

At the completion of each test, the user has the option of printing the test results obtained so far, retest, or execute a different test. If a test is repeated, the new test results overwrite the previous results.

To cancel a test that’s all ready underway, simply push the “RESET” button.

In some cases, numerous tests are provided to test all elements typically included with a particul

type. For example, the transformer differential test includes: Slope, Operate time, 2nd and 5th Harmonicrestraint, as well as Unrestrained pickup. To perform all these tests sequentially, select the “Teoption in the test execution menu.

Note that the hookup information may change, depending on the relay and test settings entered by This typically occurs when multiple current channels are paralleled to provide high current levels, asdetermined by the relay and test settings entered by the user. For this reason, it’s mandatory hookup information be verified prior to execution of the test and whenever relay or test setting paraare changed.

6-2 MTS-1700 SERIES OPERATION AND REFERENCE MANUAL ########0$17$#7(67#6<67(06################################################ CU M004 01A


Note that some parameters found under the “Relay Settings” menu are not actuall y used to perform the

test, but are included so that the printed test report will contain all relevant information. For example,

parameters such as Relay ID and Time dial are included for completeness of the test report.

Context sensitive help is available for all test and relay setting parameters. For example, one of the relay

setting parameters for the transformer differential test is 2nd Harmonic Restraint level. This is abbreviated

as “2nd H/R: 18.0% “ in the menu. If the user selects this parameter and then presses the “HELP” button,the following description will be displayed on the CM display:

“% of 2nd harmonic req’d to restrain the trip element” . Pressing “HELP” a second time clears the helpmessage and reverts back to the screen seen prior to pushing the “HELP” button.

Note for advanced users:

To increase the flexibility of Quicktest, unused channels are not disabled by Quicktest during testexecution. This allows the user to pre-program a particular unused output and then execute Quicktest. Forexample, assume a user wants to test the operate time of a voltage restrained overcurrent element. Theparticular stack being used contains one voltage and one current channel, and the user wants to use theTimed overcurrent (51) test to test the operate time of the relay with an input voltage of 100 Volts. Theuser would simply set the voltage channel to 100V prior to test execution, and then execute the test in anormal fashion.



p. xTap.

e for an operate

6.5 TIMED 1Φ Φ Φ Φ OVERCURRENT TEST

ANSI#: 51

Hardware requirements: MTS-3010 (DIGITAL I/O module) MTS-3060 (AC CURRENT module) or MTS-3030 (CONVERTIBLE V/I module)

6.5.1 Test Description

Tests performed:

Minimum Pickup: determines the minimum pickup threshold of a time overcurrent element.

Operate time: determines the operate time vs. current for up to seven points.

Input Parameters:

1. Relay Id: Five digit numeric identifier for relay.2. Tap: The expected pickup or operate current in [amps]. Range 0.01 – 75.0 A.3. tmax: The maximum time required for the disk to operate in [sec]. Range 0.01 – 999.0 s.4. Time dial: The time dial setting of the relay (optional included for completeness of report).5. Imax: The maximum test current in [amps] to be applied during testing. Range 0.1 – 75 A.6. Test #1 @ The multiple of tap for the first test point of the operate time test. Range 1.1– 75 xTa7. Step The multiple of tap to be added for each step of the operate time test. Range 0.1– 208. # of steps The number of test steps to perform for the operate time test. Range 1 - 7.

Output Results:

Minimum pickup test: Measured pickup current [A]

Operate time test: Measured operate time [sec] vs. current [A] for up to seven points.

6.5.2 Example 1φ φ φ φ Test Descriptions

The following example demonstrates the steps required to test the minimum pickup and operate timinduction disk style overcurrent relay. The 6 amp tap is being used, and the user wants to test thetime at: 2, 4, 6, 8, and 10 xTap or 12, 24, 36, 48, and 60A.



Example 1φφφφ Instantaneous Over Cur rent (50)

F4

F1Relay Settings …Test Settings …Hookup Info …Execute Test …

Minimum P/UTime vs I

Testing MinimumpickupPlease Wait !

Testing MinimumpickupChecking forwelded contact

F2

Min P/U = 6.06ANext Test ...Print Result …

Minimum P/U …Time vs I …

Testing Time vsCurrentPlease wait !

The minimum pickup is 6.06A

Testing MinimumpickupTesting for trip@ 0.8 xTap

Testing MinimumpickupAttempting tooperate contact

Testing MinimumpickupRamp down untilcontact opens

Testing MinimumpickupFinal search pleasewait !

Testing Time vsCurrentChecking forwelded contact

Testing Time vsCurrentTime = x.xx s *

Testing Time vsCurrentResetting diskplease wait !

Min P/U = 6.06ANext Test ...Print Result …View Result F4

F3

12.0 A: 4.32 s24.0 A: 3.56 s36.0 A: 1.14 s48.0 A: 0.71 s ø

Press F3 to print the test report(printer required)

Scroll down to see 60.0A: 0.54s

* Time value increases untilrelay operates

These two steps repeat for the # of test points

F1 F1

F2

F3

F4

BACK

Enter up to 5 numbers for unique relay identityEnter the Tap setting of the relayEnter the maximum time for the disk to resetEnter the Time Dial setting of the relay

Relay Settings …Test SettingsHookup Info …Execute Test …

Relay ID: 00000Tap: 6.00 Ampstmax: 5.00 SecTime dial: 5.00

F2

F1

F2

F3

F4

BACK

Relay Settings …Test Settings …Hookup Info …Execute Test …

Imax: 60.0 AmpsTest#1@ 2.0xTapStep: 2.00 xTap# of steps: 005

Enter the maximum current requiredEnter test point # 1 tap multipleEnter the multiple of tap to be added per stepEnter the total # of test points

F3

BACK


Parallel IA & IB & IC a nd connect to relay coil (+)Connect IN to relay coil (-)Connect trip contacts of the relay to DIO channel#1

RELAY MTSac coil+ IA& B&Cac coil- INtrip o/p DIO#1

F2 F2 F2User Defined1φφφφ OverCur rent1φ UnderVoltage1φ OverVoltage

Instant. (50)Timed (51)

SettingsTest RelayPreferencesIndex

MENU



definite

6.6 INSTANTANEOUS 1Φ Φ Φ Φ OVERCURRENT TEST

ANSI# 50Hardware requirements: MTS-3010 (DIGITAL I/O module)

MTS-3060 (AC CURRENT module) or MTS-3030 (CONVERTIBLE V/I module)


Tests performed:

1. Operate current: determines the pick up threshold of a definite time overcurrent element.2. Operate time: determines the operate time with 115% of nominal operate current

Input Parameters:

1. Relay Id: Five digit numeric identifier for relay2. Tap: The expected pickup or operate current in [amps]. Range 0.01 – 75.0 A.3. t(op): The expected operate time in [sec] at 1.15xTap. Range 0.001 – 15.0 s.

Output Results:

1. Operate current test: Measured pickup current [A.]2. Operate time test: Measured operate time [sec].

6.6.2 Example 1φ φ φ φ Instantaneous Over Current (50)

The following example demonstrates the steps required to test the pickup and operate time for a time overcurrent relay. The relay settings are: pickup = 60 amp, operate time = 32ms.



Example 1φφφφ Instantaneous Over Current (50)

BACK

F3

F1Relay Settings …Hookup Info …Execute Test …

Operate cur …Operate time …

Testing pickupplease wait !Checking forwelded contact

Testing pickupplease wait !

F2 F2F1

MENU

SettingsTest RelayPreferencesIndex

User Defined1φφφφ OverCurrent1φ UnderVoltage1φ OverVoltage

Instant. (50)Timed (51)

F1 F1

F2

F3

Relay Settings …Hookup Info …Execute Test …

Relay ID: 00000Tap: 60.0 Ampst(op): 0.032 Sec

Enter up to 5 numbers for unique relay identityEnter the nominal operate current setting of the relayEnter the nominal operate time

BACK

F2Relay Settings …Hookup Info …Execute Test …

RELAY MTSac coil+ IA&B&Cac coil- INtrip o/p DIO#1

Parallel IA & IB & IC and connect to relay coil (+)Connect IN to relay coil (-)Connect trip contacts of the relay to DIO channel#1

F2F3

Testing pickupplease wait !Ramping up*

Ipickup = 60.85 At oper. = 0.00 sNext testPrint result

Operate cur …Operate time …

The pickup current is 60.85A

F4F3

Testing t-oper.Please wait !

Ipickup = 60.85 At oper. = 0.029 sNext testPrint result

Press F3 to repeat either testPress F4 to print the test report (printer required)

* Output current is displayed on the ACI module



ent.

s.

0.0V. ge 0.1-

pickup set to

6.7 TIMED 1Φ Φ Φ Φ UNDER VOLTAGE TEST

ANSI#: 27

Hardware requirements: MTS-3010 (DIGITAL I/O module), MTS-3040 (AC VOLTAGE module) or MTS-3030 (CONVERTIBLE V/I module)


Tests performed:

Operate level: determines the maximum pickup threshold of a time under voltage elem

Time vs. voltage: determines the operate time vs. voltage for up to seven points.

Input Parameters:

1. Relay Id: Six digit numeric identifier for relay.2. Voperate: The expected operate voltage in [Volts]. Range 1.0 – 150.0 V.3. tmax: The maximum time required for the disk to operate in [sec]. Range 0.01 – 999.0

4. Time dial: The time dial setting of the relay (optional included for completeness of report).5. Vprefault: The desired prefault voltage in [Volts], Range 0.0 – 150.0 V.6. Test #1 @ The test voltage for the first test point of the time vs. voltage test. Range 0.0– 157. Step The test voltage to be subtracted for each step of the time vs. voltage test. Ran

100.0V.8. # of steps The number of test steps to perform for the time vs. voltage test. Range 1 - 7.

Output Results:

Operate level test: Measured operate voltage [V].Time vs. voltage test: Measured operate time [sec] vs. voltage [V] for up to seven points.

6.7.2 Example 1φ φ φ φ Timed Under Voltage (27)

The following example demonstrates the steps required to determine the operate level (maximumvoltage) and operate time vs. voltage for an induction disk style under voltage relay. The relay ispickup for voltages greater than 100V, and the user wants to test the operate time at: 90, 80, and 70V.



Example 1φφφφ Timed Under Voltage (27)

8VHU#'HILQHG4φ#2YHU&XUUHQW1φφφφ UnderVoltage1φ OverVoltageø

Instantaneous..Inverse time…F2

F3F2

MENU

Settings …Test Relay …Preferences …Index …

F1

BACK

F1

F3

F4

F2Relay ID: 00000Voperate:130.0VTmax: 6.000 secTime Dial: 4.00

Relay SettingsTest SettingsHookup InfoExecute Test

Enter up to 5 numbers for unique relay identityEnter the operate voltage of the relay (Tap)Enter the maximum time for the disk to resetEnter the Time Dial setting of the relay

F2

BACK

Vpreflt: 120.0VTest#1@ 135.0VStep: 5.0V# of steps: 003


Enter the nominal voltage that will drop out the relayEnter the test voltage for the 1st operate time testEnter the step that will be subtracted for each operate time testEnter the total # of test points for the operate time test

F1

F3

F4

F2

F3

RELAY MTSac coil+ VAac coil- VNtrip o/p DIO# 1


BACK

Connect VA to relay coil (+)Connect VN to relay coil (-)Connect trip contacts of the relay to DIO channel#1

Relay SettingsTest SettingsHookup InfoExecute Test F4

Operate point ..Time vs V …

F1 Testing operate PointPlease wait !

Testing operate PointChecking forWelded contact

Testing operate PointAttempting tooperate contact

F2Operate point ..Time vs V …

Testing Time vs Voltage

please wait !

Testing Time vs VoltageChecking forWelded contact

Testing operate PointRamp up untilcontact opens

Testing operate PointFinal searchplease wait

Voper. = 98.7VNext test …Print resultV vs t result

F2The relay operated 98.7V

Testing Time vs VoltageTime = x.xx splease wait !

Testing Time vs Voltageresetting diskplease wait !

Voper. = 98.7VNext test …Print ResultV vs t Result F4

F3

90.0 V: 4.25 s80.0 V: 3.61 s70.0 V: 1.92 s

Press F3 to print the test reportPress F4 to view the test results

Time value increases until relay operatesThese two steps repeat for the # of test points



definite

6.8 INSTANTANEOUS 1ΦΦΦΦ UNDER VOLTAGE

ANSI#: 27



Tests performed:

Operate voltage: determines the pick up threshold of a definite time under voltage element.

Operate time: determines the operate time with 85% of nominal operate voltage.

Input Parameters:

1. Relay Id: Six digit numeric identifier for relay.2. Voperate: The expected operate voltage in [Volts]. Range 1.0 – 150.0 V.3. t(op): The expected operate time in [sec] at 85% of Voperate. Range 0.001 – 15.0 s.

4. Vprefault: The desired prefault voltage in [Volts], Range 0.0 – 150.0 V.

Output Results:

Operate voltage test: Measured operate voltage [V]Operate time test: Measured operate time [sec]

6.8.2 Example 1φ φ φ φ Instantaneous Under Voltage (27)

The following example demonstrates the steps required to test the pickup and operate time for a time under voltage relay. The relay settings are: Voperate = 60 V, operate time = 32ms.



Example 1φφφφ Instantaneous Under Voltage (27)

F4

Operate volt …Operate time …

Testing Voperate Please wait !Ramping down toFind oper. point

F1Relay Settings …Test Settings …Hookup Info …Execute Test …

Testing Voperate Please wait !Checking forwelded contact

F1

BACK


Enter up to 5 numbers for unique relay identityEnter the nominal operate voltage setting of the relayEnter the nominal operate time of the relay

Relay ID: 00000Voperate: 60.0Vt(op): 0.032 sec

F1

F2

F3


Vpreflt: 120.0 VF2

F1

BACK

Enter the nominal prefault voltage (voltage required toprevent the relay from asserting)

F3

BACK


RELAY MTSac coil+ VAac coil- VNtrip o/p DIO#1


F2F2

F1Settings …Test Relay …Preferences …Index …

Instantaneous..Inverse time…

MENU

User Defined1φ OverCurrent1φφφφ UnderVoltage1φ OverVoltageøøøø

Voper. = 60.23 Vt oper. = 0.029 sNext test …Print Result … F4

F3

BACK

Press F3 to repeat either testPress F4 to print the test report (printer required)

Press BACK to return to previous menu


Testing t-oper.Please Wait !t = x.xxx s

Voper. = 60.23 Vt oper. = 0.0 sNext test …Print Result …

F3F2

The operate voltage is 60.23V



nt.

s.

0.0V. e 0.1–

pickup set to5V.

6.9 TIMED 1 Φ Φ Φ Φ OVER VOLTAGE TEST

ANSI#: 59



Tests performed:

1. Operate level: determines the minimum pickup threshold of a time over voltage eleme

2. Time vs. voltage: determines the operate time vs. voltage for up to seven points.

Input Parameters:

1. Relay Id: Six digit numeric identifier for relay.2. Voperate: The expected operate voltage in [Volts]. Range 1.0 – 150.0 V.3. tmax: The maximum time required for the disk to operate in [sec]. Range 0.01 – 999.0 4. Time dial: The time dial setting of the relay (optional included for completeness of report)5. Vprefault: The desired prefault voltage in [Volts], Range 0.0 – 150.0 V.6. Test #1 @ The test voltage for the first test point of the time vs. voltage test. Range 0.0– 157. Step The test voltage to be added for each step of the time vs. voltage test. Rang

100.0V.8. # of steps The number of test steps to perform for the time vs voltage test. Range 1 - 7.

Output Results:

1. Operate level test: Measured operate voltage [V]2. Time vs. voltage test: Measured operate time [sec] vs. voltage [V] for up to seven points.

6.9.2 Example 1φ φ φ φ Timed Over Voltage (59)

The following example demonstrates the steps required to determine the operate level (minimumvoltage) and operate time vs. voltage for an induction disk style over voltage relay. The relay ispickup for voltages greater than 130V, and the user wants to test the operate time at: 135, 140, and 14



Example 1φφφφ Timed Over Voltage (59)

8VHU#'HILQHG4φ#2YHU&XUUHQW1φ UnderVoltage1φφφφ OverVoltage

Instantaneous..Inverse time…F2

F4

F2

MENU

Settings …Test Relay …Preferences …Index …

F1

BACK

F1

F3

F4

F2Relay ID: 00000Voperate:130.0VTmax: 6.000 secTime Dial: 4.00


Enter up to 5 numbers for unique relay identityEnter the operate voltage of the relay (Tap)Enter the maximum time for the disk to resetEnter the Time Dial setting of the relay

F2

BACK

Vpreflt: 120.0VTest#1@ 135.0VStep: 5.0V# of steps: 003


Enter the nominal voltage that will drop out the relayEnter the test voltage for the 1st operate time testEnter the step that will be added for each operate time testEnter the total # of test points for the operate time test

F1

F3

F4

F2

F3

RELAY MTSac coil+ VAac coil- VNtrip o/p DIO#


BACK



Operate point ..Time vs V …

F1 Testing operate PointPlease wait !

Testing operate PointChecking forWelded contact

Testing operate PointAttempting tooperate contact

F2Operate point ..Time vs V …

Testing Time vs Voltage

please wait !

Testing Time vs VoltageChecking forWelded contact

Testing operate PointRamp down untilcontact opens

Testing operate PointFinal searchplease wait

Voper. = 129.7VNext test …Print resultV vs t result

F2The relay operated at 129.7V

Testing Time vs VoltageTime = x.xx splease wait !

Testing Time vs Voltageresetting diskplease wait !

Voper. = 129.7VNext test …Print ResultV vs t Result F4

F3

135.0 V: 4.25 s140.0 V: 3.61 s145.0 V: 1.92 s

Time value increases until relay operatesThese two steps repeat for the # of test points

Press F3 to print the test reportPress F4 to view test results



definite

6.10 INSTANTANEOUS 1Φ Φ Φ Φ OVER VOLTAGE TEST

ANSI#: 59



Tests performed:

1. Operate voltage: determines the pick up threshold of a definite time over voltage element.

2. Operate time: determines the operate time with 115% of nominal operate voltage.

Input Parameters:

1. Relay Id: Six digit numeric identifier for relay.2. Voperate: The expected operate voltage in [Volts]. Range 1.0 – 150.0 V.3. t(op): The expected operate time in [sec] at 115% of Voperate. Range 0.001 – 15.0 s.

4. Vprefault: The desired prefault voltage in [Volts], Range 0.0 – 150.0 V

Output Results:

1. Operate voltage test: Measured operate voltage [V]2. Operate time test: Measured operate time [sec]

6.10.2 Example 1φ φ φ φ Instantaneous Over Voltage (59)

The following example demonstrates the steps required to test the pickup and operate time for a time over voltage relay. The relay settings are: Voperate = 130 V, operate time = 32ms.



Example 1φφφφ Instantaneous Over Voltage (59)

F1 F1

F2

F3

BACK

Relay ID: 00000Voperate: 130.0Vt(op): 0.032 Sec.

Relay Setti ngs …Test Settings …Hookup Info …Execute Test …

Enter up to 5 numbers for unique relay identityEnter the nominal operate voltage of the relay (Tap)Enter the nominal operate time of the relay

Vpreflt: 120.0 VF2

F1

BACK


Enter the nominal prefault voltage (voltage required toprevent relay from asserting)

F3

BACK

RELAY MTSac coil+ VAac coil- VNtrip o/p DIO#1



F4


Testing Voperate Please wait !Ramping up tofind oper. point

F1 Testing VoperatePlease wait !Checking forwelded contact


User Defined1φ OverCurrent1φ UnderVoltage1φφφφ OverVoltageø

Instantaneous …Inverse Time …F2

F4

F1Settings …Test Relay …Preferences …Index …

MENU


Testing t-oper.Please Wait !t = x.xxx s

Voper. = 129.3 Vt oper. = 0.0 sNext test …Print Result …

F3F2

The operate voltage is 129.3V

Voper. = 129.3 Vt oper. = 0.029 sNext test …Print Result … F4

F3

BACK

The operate time is 29msPress F3 to repeat either testPress F4 to print the test report (printer required)

Press BACK to return to previous menu



t.

%]

0%]

6.11 TRANSFORMER DIFFERENTIAL TEST.

ANSI#: 87Hardware requirements: MTS-3010 (Digital I/O module),

MTS-3060 (AC CURRENT) or MTS-3030 (CONVERTIBLE V/I module)Version: 1.3


1. Slope: Determines the slope of a restrained differential element for up to three points. 2. Operate time: Determines the operate time vs. operate current for up to three points.

3. 2nd Harm rest.: Determines the percentage of 2nd harmonic required to restrain the trip element.

4. 5th Harm rest.: Determines the percentage of 5th harmonic required to restrain the trip elemen

5. Unrest. P/U: Determines the pickup threshold of an unrestrained over current element.

Input Parameters:

1. Relay Id: Six digit numeric identifier for relay

2. Tap1: The tap setting of current winding #1. [Range 0.01 – 50.0 A] 1

3. Tap2: The tap setting of current winding #2 [Range 0.01 – 50.0 A] 1

4. IopU.: The multiple of tap required to operate the unrestrained element. [Range 0.01 – 10.0]. 4

5. IopR.: The multiple of tap required to operate the restrained element. [Range 0.01 – 10.0].

6. toper.: The operate time. [Range 0.0 – 10.0 sec.]

7. Phase: The phase angle between the two test currents. [Range 0.0– 359.9 °]

8. 2nd H/R: The percentage of 2nd harmonic required to restrain the trip element. [Range 0-50

9. 5th H/R: The percentage of 5th harmonic required to restrain the trip element. [Range 0-510. # of steps: The number of test steps to perform for the operate time and slope tests. [Range 1 – 3]

11. Start I1: The I1 test current for the first iteration of the operate time and slope tests [Range 0.1-

25A]

12. Step I1: The I1 test current to be added for each iteration of the slope test. [Range 0.1-25A]

13. Start I2: The I2 test current for the first iteration of the operate time test. [Range 0.1-25A]

14. Step I2: The I2 test current to be added for each iteration of the operate time test. [Range 0-

25A]

15. I max: The maximum test current to be applied during the test. [Range 0.0 – 50.0 A]

Output Results:1. Slope: Measured slope of the restrained differential element for up to three points. 2. Operate time: Measured operate time vs. operate current for up to three points.

3. 2nd Harm rest.: The percentage of 2nd harmonic content required to restrain the trip element.

4. 5th Harm rest.: The percentage of 5th harmonic content required to restrain the trip element.5. Unrest. P/U: Measured operate current [A] for the unrestrained over current element.



Notes: 1 For relays with unequal taps, “Tap1” must be < “Tap2”2 When using the MTS-3060: I1 and I2 refers to the current channels IA and IB respectively.3 If the setting “Imax” is greater than 25A, Channel B and C must be paralleled. (MTS-3060 only)4 If “ IopU” x “Tap1” < 25A, winding#1 will be tested. Otherwise winding#2 will be tested.

5 Slope=Iop/Ires, Iop=_I1–I2_, Ires= (I1+I2)/2 for 3 terminal or greater of I1 or I2 for 2 terminal.

6.11.2 Example Transformer Differential

The following example demonstrates the steps required to test a three terminal type transformer differential

relay.

The following tests are performed: slope, operate time, 2nd and 5th harmonic restraint, and un-restrained

pickup level.

Both relay taps are set for 5.0A. The slope is set for 25%. The 2nd and 5th harmonic restraint settings are

20% and 35% respectively. The unrestrained element is set to pickup at 6xTap.

Note that the test setting “# of steps” is set to one in this example. If the “# of steps” setting is increased,the slope and operate time tests would be repeated to measure the slope and operate time for up to threedifferent restraint currents as determined by the test settings: “Step I1” and “Step I2".



st

s

t.

Example Transformer Differential (87)

Testing SlopeTest # 1 of 1Ramping I2 to findoperate pt

I1= 15.0, I2= 19.3I∆= 4.3, S=25.1 %

BACK

The relay operated with: I1 = 15.0A, I2 = 19.3A, this yields 4.3A in theoperate winding for a slope of 25.1%

Print result …Slope result …Time result …2nd H/R = 0.0 %ø

Testing OperatetimeTest # 1 of 1

Slope …Operate time …2nd Harm rest ..5th Harm rest ø

Testing OperatetimeTesting forwelded contact

Testing OperatetimeTesting withbalanced current

F2

RELAY MTSac res1 IAac res2 IBac oper IN øtrip o/p DIO# 1

BACK


F3

scroll

Connect the first restraint winding to IAConnect the second restraint winding to IBConnect the operate winding to INConnect the relays trip contact to DIO channel # 1


Slope …Operate time …2nd Harm rest ..5th Harm rest

F1 Testing Slope

Testing forwelded contact

Testing Slope

Testing withbalanced current

Testing SlopeTest # 1 of 1Determiningramp start point

BACK

Step I2 : 1.00 AùImax : 25.0 A

F

F

Enter the I2 current to be added for each step of the op. time teEnter the maximum test current to be applied during the test.

F1 F1

F2

F3

F4

Relay ID: 00000Tap 1: 5.00 ATap 2: 5.00 AIop.U: 6.00 xTapø


scroll

Enter up to 5 numbers for unique relay identity#1Enter the relay tap setting for winding 1.Enter the relay tap setting for winding 2.Enter the multiple of tap to pickup the unrestrained element.

Iop.R: 0.35 xTapùtoper.: 0.05 s2nd H/R: 20.0 %5th H/R: 35.0 %Phase: 180.0 °

F

F

F

F

F

Enter the multiple of tap to pickup the restrained element.Enter the nominal operate time of the relay.Enter the relays 2nd harmonic restraint level.Enter the relays 5th harmonic restraint level.Enter the phase angle (normally set to 180°).

BACK

F2

# of steps: 1Start I1:15.00 AStep I1: 1.00 AStart I2: 5.00 Aø


F1

F2

F3

F4scroll

Enter the # of test steps to perform (op. time & slope tests)Enter the I1 current for the first step of the op. time & slope testEnter the I1 current to be added for each step of the slope test.Enter the I2 test current for the first step of the operate time tes

4φ#2YHU&XUUHQW1φ UnderVoltage1φ OverVoltageDifferential …

3 terminal ...2 coil indep. …F2

F4

F1

MENU

Settings QuickTest Preference Index


BACK


Testing 2ndharmonic rest.Ramping 2ndxx.x % 2nd harm.

Print result …Slope result …Time result …2nd H/R = 18.0%ø

BACK

The relay operated with 18.0% 2nd harmonic content .

Slope …Operate time …2nd Harm rest ..5th Harm rest øøøø F4

Testing 5thharmonic rest.Testing forwelded contact

Testing 5thharmonic rest.Testing withbalanced current

Testing 5thharmonic rest.Determining rampstart start pt.: x.x %

Testing 5thharmonic rest.Ramp up 5th harmPlease wait

Slope …Operate time …2nd Harm rest …5th Harm rest …ø F4

Testing Un- restrained P/U

please wait !

Testing Un- restrained P/UChecking forwelded contact

Operate time …2nd Harm rest …5th Harm rest..Unrest p/u … øøøø

scroll

Testing Un- restrained P/UTesting withbalanced current

I1=15.0, I2= 5.0I∆=10.0 : 0.032 s The relay operated after 32 ms with:

I1 = 15.0A, I2 = 5.0A, (Ioperate =10.0A)

BACK

Testing 2ndharmonic rest.Ramp down 2nd

harmonic

Print result …Slope result …Time result …2nd H/R = 0.0 %ø

Slope …Operate time …2nd Harm rest ..5th Harm rest ø

Testing 2ndharmonic rest.Testing forwelded contact

Testing 2ndharmonic rest.Testing withbalanced current

BACK F3

Slope result …Time result …2nd H/R = 18.0%5th H/R = 34.5%ø

Testing 5thharmonic rest.Ramping 5thxx.x % 5th harm.


The relay operated with: 34.5% 5th harmonic .scroll

BACK

Time result … ù2nd H/R = 18.0%5th H/R = 34.5%UnResP/U=29.8A

The unrestrained elementoperated at 29.8A

Testing Un- restrained P/UCheck for falsetrip @ 80% x P/U

Testing Un- restrained P/UPerforming fastramp on Ix

Testing Un- restrained P/UPerforming slowramp on Ix


scroll


RS-232C INTERFACE - Section 7

RS-232C INTERFACE

The RS-232C interface allows the MTS-3000 to be controlled by any device with a RS-232C serialinterface, such as a PC. Virtuall y all the instrument functions may be controlled via the RS-232C interface.

7.1 RS-232C CONNECTION

7.1.1 Interface Specifications

The MTS-3000 is equipped with two serial ports designated as COM 1 and COM 2. Both serial ports use aDB-9 connector.

The following data will assist you in setting up an operational interface:

Baud Rates: User selectable (300, 600, 1200, 2400, 4800, 9600, 19200, 57600, or 115200 baud)

Stop bits: User selectable (1 or 2)

Parity User selectable (Odd, even, or none)

Flow control: User selectable (S/W Xon Xoff, H/W RTS, CTS, none)

Notes

1. Parameters shown in bold typeface are factory default settings

2. All parameters are stored in non-volatil e memory and are subsequently preserved after power-down.

3. Shielded cable should be used between the external device (computer), and the MTS-3000. The

shield should be connected to the frame (earth) ground.4. Since many computers ignore the handshake signals, pins 2, 3 and 5 may be the only lines that have to

be connected to obtain a functional interface. Due to potential complexities involved, contact yourcomputer dealer regarding cabling requirements for your specific computer or terminal.

7.1.2 COM 1 RS232C Por t

The COM 1 port uses a female DB-9 connector wired as a DCE (Data Communications Equipment). Thisport can be connected to either a external PC or the DUT. A "straight through" cable must be used whenconnecting this port to a PC.

7.1.2.1 COM 1 RS-232C CONNECTOR PIN ASSIGNMENTS.

Connector Pinout:

DB-9 Pin# Signal (DTE view) Direction2 Receive Data From MTS-30003 Transmit Data To MTS-30005 Signal Ground NA7 Request to Send To MTS-30008 Clear to Send From MTS-3000

Recommended cable for connection to PC:

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 7-1CU M004 01A ###########0$17$#7(67#6<67(06


can being this

|

cted as

|

cted as

To MTS-3000 To PC To PC Male DB-9 Pin# Female DB-25 Female DB-9

1 --------------------------------- 8 ------------------------------------- 12 --------------------------------- 3 ------------------------------------- 23 --------------------------------- 2 ------------------------------------- 34 --------------------------------- 20 ------------------------------------- 45 --------------------------------- 7 -------------------------------------- 56 --------------------------------- 6 -------------------------------------- 67 --------------------------------- 4 ------------------------------------- 78 --------------------------------- 5 -------------------------------------- 8

7.1.3 COM 2 RS232C Port

The COM 2 port uses a male DB-9 connector wired as a DTE (Data Terminal Equipment). This portconnected to either a external PC or the DUT. A "null modem" cable must be used when connectport to a PC.

7.1.3.1 COM 1 RS-232C CONNECTOR PIN ASSIGNMENTS.

Connector Pinout:

DB-9 Pin# Signal (DTE view) Direction

2 Receive Data To MTS-30003 Transmit Data From MTS-30005 Signal Ground NA7 Request to Send From MTS-30008 Clear to Send To MTS-3000

7.1.4 Baud Rate Selection

7.1.4.1 COM 1 BAUD RATE.

Enter the following key sequence to change the COM 1 baud rate: MENU | Preferences | COM 1 RS-232

Baud Rate, and then select the desired baud rate from the list.

After selecting the baud rate, this value is retained in non-volatile memory and need not be re-selelong as the same baud rate is desired.

7.1.4.2 COM 2 BAUD RATE.

Enter the following key sequence to change the COM 2 baud rate: MENU | Preferences | COM 2 RS-232

Baud Rate, and then select the desired baud rate from the list.

After selecting the baud rate, this value is retained in non-volatile memory and need not be re-selelong as the same baud rate is desired.

7-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL #0$17$#7(67#6<67(06############################################ CU M004 01A


7.1.5 XON/XOFF Handshaking

The RS-232C output has XON/XOFF capability to prevent data loss when used with computers and

devices with XON/XOFF capabili ty.

The standard CONTROL-S (ASCII 19) and CONTROL-Q (ASCII 17) characters are used to pause andresume data output from the MTS-1710. These may be used manuall y, if desired, to pause the display.

7.2 COMMAND DESCRIPTIONS

For experimentation or learning purposes, the RS-232C interface operates in an easy-to-use,conversational or ‘ terminal’ mode. When using a computer, the computer should be running terminal

emulation software such as Manta Test Systems’ Powerterm, PROCOMM or Windows ‘98 HyperTerminal.

A three-letter command is used to select any particular function. Simply type this command, followed by

the RETURN key, from the computer or terminal connected to the MTS-3000.

Some commands require an additional numerical value(s) to follow the command. This is indicated by the

# character in the command summary following.

Al l commands may be entered in any combination of upper and lower case, although key command lettersare denoted here in upper case for clarity.

7.2.1 Control M ode Programming

When the MTS-3000 is in remote mode, all front panel controls are disabled with the exception of the

RESET button (This is a safety feature). While in remote mode the 4th li ne of the CM will display

"REMOTE MODE". The MTS-3000 can be restored to local control by sending the LOC command.

Command Description

REM Remote mode

• Places the MTS-3000 in remote control mode. Al l front panel controls will be

disabled, except for the RESET button. (This is a safety feature).

LOC Local mode• Places the MTS-3000 in local control mode. Front panel controls are re-enabled.

7.2.2 Fault State Control

Command DescriptionENA# Enable / Disable outputs

• This command is the equivalent of pressing the ENABLE button • Valid values are 0 and 1:

0 - disables the AC outputs

1 - enables the AC outputs



f the

cur.

s

Thee.

n

STA Start trigger (Enter Static fault state)

• This command is the equivalent of pressing and holding the FAULT button.

STR Start trigger (Enter Dynamic fault state)

• This command is the equivalent of a start trigger (i.e. a momentary press o

FAULT button).

STP Stop trigger (Enter postfault state)

• This command is only effective when in dynamic fault state.

RES Reset

• Returns the MTS-3000 to prefault state.

PRF# Set Prefault on/off• Valid values are 0 and 1

0 - sets prefault V&I off

1 - sets prefault V&I on

MFD# Maximum Fault Duration# = duration in milliseconds

• Exit Dynamic Fault State after the specified period if a trip signal doesn’t oc

• Waits until either the fault state changes to prefault or postfault, or until the specified time elapses.

• Valid values are 0 to 9999999 ms. 0 = infinity, resolution is 4ms with valuerounded down.

• This command is meant to be executed only in Dynamic FAULT state. delay value is programmed with the maximum expected relay operation tim

Example:>STR <-begin test sequence>MFD2500 <-wait for relay closure up to 2.5 sec. later

>PFS <- interrogate fault statePOSTFAULT <-MTS-3000 returns “POSTFAULT” indicating operatio



7.2.3 External Data Mode

Command DescriptionFMD# Set Fault Mode

• Valid values are 0 - 8

0 - Φ-N A-N

1 - Φ-N B-N

2 - Φ-N C-N

3 - Φ-Φ A-B

4 - Φ-Φ B-C

5 - Φ-Φ C-A

6 - 3Φ-(Φ-Φ) A-B

7 - 3Φ-(Φ-Φ) B-C

8 - 3Φ-(Φ-Φ) C-A

FMD? Interrogate Fault Mode

• Prints the present value of the fault mode (0-14). See the FMD# command

description for assignments.

VIC x y z Sets the amplifer mode for the MTS-3030 Convertable Voltage / Current Module

• Sets the specified channel(s), amplif ier mode:

• Where x = VI module number 0 or 1

• Where y = channel number of the module specified by x

• Where z = mode: 0 = current, 1 = voltage

• AC outputs must be disabled prior to execution of this command

7.2.4 Voltage Programming

7.2.4.1 COMM ANDS.

Command Description

VDC# DC Voltage

• Sets the DC voltage amplitude for the present fault state

• Valid values are 0 - 300 (volts)

AVA# Amplitude Va

• Sets the amplitude of Va for the currently selected fault state

• Valid values are 0 - 150.00 (volts)

AVB# Amplitude Vb

• Sets the amplitude of Vb for the currently selected fault state


AVC# Amplitude Vc

• Sets the amplitude of Vc for the currently selected fault state




te

4

AVS x y z Amplitude Voltage Specified

• Sets the specified channel(s), voltage amplitude, for the specified fault sta

• Where x = value of bit pattern of channels to be changed, Va=1, Vb=2, Vc=

• Where y = voltage amplitude: 0 - 150.00 (volts)

• Where z = fault state: 0 = present, 1 = prefault, 2 = fault

HVS x 2 y z p Set Percent Harmonic for specified voltage channels

• Where x = value of bit patern of channels to be changed, Va=1, Vb=2, Vc=4

• Where y = harmonic #, valid values are 2 - 10

• Where z = percent harmonic, valid values are 0 - 50.0 (%)• Where p = phase of harmonic relative to harmonic, valid values are 0 - 360

7.2.4.2 EXAMPLES.

The following examples show command sequences using the voltage programming commands:

Example 1 Simple dynamic Φ-N Fault

AVS 7 70 1 <- set Va, Vb and Vc to 70.0V during prefault

AVS 2 15 2 <- set Vb fault amplitude to 15V

PRF1 <- prefault on

STR <- initiate fault

Example 2 Simple dynamic 3-Φ Fault


AVS 7 22 2 <- set Va, Vb and Vc to 22.0V during fault

PRF1 <- prefault on

STR <- initiate fault

7.2.5 Current Control

Command Description

AI4# Amplitude IDC. Applicable only if option 5 is fitted.

• Set the amplitude of the DC current.

• Valid values are 0 - 2.50 (amps).

AIA# Amplitude Ia

• Sets the amplitude of Ia for the currently selected fault state.


AIB# Amplitude Ib

• Sets the amplitude of Ib for the currently selected fault state.




AIC# Amplitude Ic

• Sets the amplitude of Ic for the currently selected fault state.

• Valid values are 0 - 25.00 (amps.)

AI S x y z Amplitude Current Specified

• Sets the specified channel(s), current amplitude, for the specified fault state

• Where x = value of bit pattern of channels to be changed, Ia=1, Ib=2, Ic=4

• Where y = current amplitude: 0 - 25.00 (amps)


IMD# Current Mode

• Set the Current Mode.

• Valid values are 2, 3, 10, 11.

2 - HI current range (25A, 15V)3 - Low current range (12A, 30V)

HIS x 2 y z p Set Percent Harmonic for specified current channels


• Where y = harmonic #, valid values are 2 - 10

• Where z = percent harmonic, valid values are 0 - 50.0 (%)

• Where p = phase of harmonic relative to harmonic, valid values are 0 - 360

7.2.6 Phase Control

These phase commands set the phase angle of the voltage and current.

7.2.6.1 COMM ANDS.

Command Description

PIS x y z Phase angle of specified current channel

• Sets the specified current channel(s), phase angle for the specified fault state


• Where y = phase angle: -360 to 360.0 (degrees)


PVS x y z Phase angle of specified voltage channel

• Sets the specified voltage channel(s), phase angle for the specified fault state

• Where x = value of bit patern of channels to be changed, Va=1, Vb=2, Vc=4

• Where y = phase angle: -360 to 360.0 (degrees)• Where z = fault state: 0 = present, 1 = prefault, 2 = fault



e cantput or

e range

Frq1)

els will

7.2.6.2 EXAMPLES.

Example 1 Simple dynamic Φ-N fault


AIS 7 0 1 <- set Ia, Ib and Ic to 0.0A during prefault

AVS 2 15 2 <- set Vb amplitude to 15V during fault

AIS 2 12 2 <- set Ib amplitude to 12A during fault

PIS 2 -75 2 <- set Ib phase angle to -75° during fault

PRF1 <- prefault onSTR <- initiate fault

7.2.7 Frequency Control/Programming

By default, all AC outputs are synchronized to the input line frequency. Variable frequency modgenerate one or two different frequencies for each fault state in the range of 8 to 1000Hz. Any oucombination of outputs can be assigned to either of the frequency sources.

Basic frequency mode allows one or more channels to be selected to output a frequency (Frq1) in th

of 8 - 1000Hz. All other output channels will remain at the default "LINE" frequency. Frequency 1 (

can be set to different frequencies for prefault and fault state, if desired.

Advanced frequency mode is an extension of basic frequency mode in that unselected output channbe set to frequency 2 (Frq2) instead of "LINE".

7.2.7.1 COMMANDS.

Command Description

F1S # Frequency 1 Source

• Sets frequency 1 to either LINE sync mode or internal

• Valid values are L = LINE sync mode, I = internal frequency generation

F2S # Frequency 2 Source

• Sets frequency 2 to either LINE sync mode or internal

• Valid values are L = LINE sync mode, I = internal frequency generation

F1A x y Frequency 1 Assign

• Assigns the specified channels to frequency 1

• Where x is output type: V for voltage channels, or I for current channels

• Where y = channel: A, B, or C

F2A x y Frequency 2 Assign

• Assigns the specified channels to frequency 2

• Where x is output type: V for voltage channels, or I for current channels

• Where y = channel: A, B, or C



FVS x y Voltage channel Frequency Source assignment

• Assigns the specified voltage channels to the specified frequency source

• Where x = value of bit pattern of channels to be changed, Va=1, Vb=2, Vc=4

• Where y = frequency source, specify: 1 for frequency 1, and 2 for frequency 2

FIS x y Current channel Frequency Source assignment

• Assigns the specified current channels to the specified frequency source


• Where y = frequency source, specify: 1 for frequency 1, and 2 for frequency 2

FR1 x y Frequency 1

• Sets frequency 1 for the specified fault state

• Where x = frequency, valid values are 8-1000 Hz

• Where y = fault state: 0 = present, 1 = prefault, 2 = fault

FR2 x y Frequency 2

• Sets frequency 2 for the specified fault state

• Where x = frequency, valid values are 8-1000 Hz

• Where y = fault state: 0 = present, 1 = prefault, 2 = fault

RFR x y z Frequency Ramp Parameters

• Sets the frequency ramp rate

• Where x = start frequency, valid values are 8-1000 Hz

• Where y = stop frequency, valid values are 8-1000 Hz

• Where z = frequency ramp rate, valid values are 0-10 Hz

• This command only applies to channels assigned to frequency 1

• This command must be sent while in prefault state

7.2.7.2 EXAMP LES.

Example 1 The following command sequence performs a frequency ramp from 60Hz to 58.2Hz at 0.3Hzper second for all ACV channels.

RES <- selects prefault state

F1S I <- select variable frequency (internal) mode for frequency 1

FVS 7 1 <- assign Va, Vb, and Vc, variable frequency 1

RFR 60 58.2 0.3 <- ramp from 60Hz to 58.2Hz with a ramp rate of 0.3Hz

PRF1 <- prefault V& I on

STR <- start ramp



n

states

y the

print

ach

e. The

e

Example 2 The following command sequence performs a frequency step from 60Hz to 62.0Hz, theramps down at 1.6Hz/sec to 51.3Hz


F1S I <- select variable frequency (internal) mode for frequency 1

FVS 7 1 <- assign Va, Vb, and Vc, variable frequency 1

FR1 60 1 <- set frequency 1 to 60 Hz for prefault state

RFR 62 51.3 1.6 <- ramp from 62Hz to 51.3Hz with a ramp rate of 0.3Hz

PRF1 <- prefault V&I on

STR <- start ramp

Example 3 The following command sequence sets the output of all voltages and currents in all faultto 400Hz.


F2S I <- set frequency 2 to variable frequency mode

FR2 400 1 <- set frequency 1 to 400 Hz for prefault state

FR2 400 2 <- set frequency 1 to 400 Hz for fault state

7.2.8 RS-232 Control

Command Description

LF1 Line Feed On

• Sets auto line feeds (ASCII 10) after carriage returns (ASCII 13) on

• In the ‘on’ state, a line feed code is sent at the end of every line output b

instrument. Some computers, terminals and printers require this code to output on successive lines.

LF0 Line Feed Off

• Sets auto line feed off• This command turns off the transmission of line feeds (ASCII 10) after e

carriage return (ASCII 13)

CR0 Carriage Return Off

• Don’t append CR to LF on output

CR1 Carriage Return On• Do append CR to LF on output

The MTS-3000 can communicate in two conversational modes: Program mode or Terminal mod

mode is controlled by the following two commands:

PGM Program mode

• The program mode is used for direct computer control of the MTS-3000.

In this mode, characters sent to the MTS-3000 are not echoed back to thterminal or computer. Communication on the interface is effectively limited toone direction at a time.



Also, the user prompt isn’t sent, and units such as “Hz” and “deg” are notprinted in response to print commands. All these features help simplifyapplication programs.

TRM Terminal mode• The TRM command is the opposite of the PGM command and places the MTS-3000

in the user-friendly Terminal mode. All commands are echoed, and units areprinted with all values.

This mode is used for simple tests, demonstrations and very simple controlapplications. It’s ideal for use with the terminal emulator feature ofPowercomm.

COM x y Communication parameters

• Sets the COM port parameters for either serial port • The new setting is retained in non-volatil e memory, and takes effect until

changed again.

• Where: x = 16 for COM 1 baud rate

• Where: x = 17 for COM 1 parity

• Where: x = 18 for COM 1 stop bits

• Where: x = 19 for COM 1 flow control

• Where: x = 24 for COM 2 baud rate

• Where: x = 25 for COM 2 parity

• Where: x = 26 for COM 2 stop bits

• Where: x = 27 for COM 2 flow control

• Where: y = 1 for 300 baud (x = 16 or 24)











• Where: y = 1 for NO parity (x = 17 or 25)

• Where: y = 2 for EVEN parity (x = 17 or 25)

• Where: y = 3 for ODD parity (x = 17 or 25)

• Where: y = 1 for 1 STOP BIT (x = 18 or 26)

• Where: y = 2 for 2 STOP BITS (x = 18 or 26)



ed to

ed onpear

d tond totion

es.

r

nel 1,

trigger

• Where: y = 0 for NO FLOW CONTROL (x = 19 or 27)

• Where: y = 1 for XON/XOFF FLOW CONTROL (x = 19 or 27)

• Where: y = 2 for RTS/CTS FLOW CONTROL (x = 19 or 27)

C2C COM2 Chat

• This command allows direct communication to an external device connectthe MTS-3000’s COM2 port.

Characters received on COM2 are sent to COM1, and characters receivCOM1 are sent to COM2. The result is the host connected to COM1 will apas if it was directly connected to the device on COM2.

• To resume normal communication with the MTS-3000, the host connecteCOM1 should send a control-Z character (decimal 26) - see C2D commachange this. The link will be broken, and the host will resume communicawith the MTS-3000.

• This feature will work even if COM1 and COM2 are set at different baud rat

7.2.9 Print Commands

Command Description

PFS Print Fault State• The MTS-3000 will return the current fault state (“PREFAULT”, “FAULT” o

“POSTFAULT”)

• Example: >PFS <- interrogate fault state

PREFAULT>STR <- cause start trigger

>PFS <- interrogate fault stateFAULT>STP <- cause stop trigger>PFS <- interrogate fault statePOSTFAULT>

PDS# Print Digital Input Trigger Status

# = DIO module number, specify 0 if only one module is present

• Returns the status of the two input trigger channels as x,y. Where x = chan

and y = channel 2.

• This is used to sense the presence of a closed contact or voltage on the

inputs.

• “1” is returned if a closed contact or voltage is sensed.

• “0” is returned if neither of the above is sensed.



PHT Print phasor table

•Prints the present amplitude and phase setting for each ACV and ACI channel

in the format: VA, <ampl>, <phase> or IA, <ampl>, <phase>

PTS Print time in seconds

• Prints the elapsed fault time if in either fault or postfault state - returns 0 if inprefault state

PCF Print system configuration

•Prints the hardware configuration as a decimal value of the following 16 bitnumber 00iii ivvvvddcc00 where:

• 0 = zero

• ii ii = number of ACI channels

• vvvv = number of ACV channels

• dd = number of DCV modules

• cc = number of DIO modules

PWF Print Waveform generation module configuration, one line per channel as:

• TC, mt, mn, id, ch, mx, where:

• T is channel type: I = current, V = voltage

• C is channel number of this type 0-5

• mt is module type: 4 = ACV, 8 = ACI, 10 = VI

• mn is module number of this type 0-1

• id is module identification: 2-29

• ch is local channel number within the module 0-2

• mx is the maximum amplitude for this channel

PWS Print Warnings Summary:

• Prints a 1 if any alarm bits were set since the last CWN command was sent

• Prints a 0 if no alarm bits were set since the last CWN command was sent

PWN Print warnings Detailed

• This command returns a value indicating which warnings alarms have occured

since execution of the CWN command.

• Response in in the following format: i, t, d; where:

• i = module ID

• t = module type: 2 = DIO, 3 = DCV, 4 = ACV, 8 = ACI, 10 = VI

• d = decimal value of latched alarm status bits (16 bit word, 1 = active):

• d for ACV, ACI, and VI modules as follows:

• LSB 0: Channel A clipping

• 1: Channel B clipping

• 2: Channel C clipping

• 3: Channel A overload



plifier

• 4: Channel B overload

• 5: Channel C overload

• 6: Any channel over temperature

• 7: All channels disabled

• 8: Power supply failure

• 9: Channel A failure

• 10: Channel B failure

• 11: Channel C failure

• 12: Channel A shutdown

• 13: Channel B shutdown

• 14: Channel C shutdown

• 15: Excess ground current

• d for DCV, and DIO modules as follows:

• LSB 0: DCV clipping

• 1: DCV overload

• 2: DCV overtemperature

• 3: DCV shutdown

• 4: DCV power supply failure

• 5: DCV amplifier failure

• 6: DCV spare

• 7: DCV NVRAM checksum error

• 8: DCI open circuit

• 9: DCI clipping

• 10: DCI over power

• 11: DCI over temperature

• 12: DCI shutdown

• 13: DCI Power supply failure

• 14: DCI amplifier failure

• 15: DIO NVRAM checksum error

For example, a returned value of 65 (equivalent to 0000000001000001 in binary) would indicate amovertemperature, and Channel A clipping for the ACV module.

7.2.10 Other Commands

Command Description

VER# Version

• Prints the version control information for the specified module as follows:

• MTS-3000, 1.5 > Module, firmware version



• Kernal V0.4.03 > Kernal version

• Mar 1 2001 > Firmware release date

• 1 = MTS-3000

• 2 = MTS-3010

• 3 = MTS-3020

• 4 = MTS-3030

• 5 = MTS-3040

• 6 = MTS-3060

FIA# Fault Incidence Angle

• Set fault incidence angle control

• Valid values are 0 - 360 (degrees)

• No value sets FIA control to random (off)

DEF Default settings

• Restores all settings to power-up default values

• See Section 5.2.1 for details

! Repeat Last Command

• One character repeat command to save transmission time

CWN Clear warnings • This command clears all l atched alarm status bits. This command is typically

executed prior to a test, after the test has completed the PWS command isexecuted to make sure no alarm bits were latched during the test.

7.2.11 DC Voltage Control

This section only applies to units with the DC Voltage output option.

The following commands are associated with control of the DC voltage output:

Command Description

DCV x y z Set the specified DC voltage parameter to the specified value

• Where x = 0

• Where y = command:

• y = 122 for set prefault voltage, z = 0 - 300

• y = 123 for set fault voltage, z = 0 - 300

• y = 124 for set postfault voltage, z = 0 - 300

• y = 120 for output enable / disable, z = 0 to disable, z = 1 to enable

VDC# DC Voltage

• Sets the DC voltage amplitude for the present fault state

• Valid values are 0 - 300. (volts)



to

7.2.12 Digital Input/Output and DC Current Control

This section only applies to units with the DIO option.

The following commands are associated with control of the DIO module:

Command Description

DIO x y z Set the specified DIO settings

• Where x = DIO module number: x = 0 for first DIO module, and 1 if referring

the second DIO module if fitted

• Where y = DIO setting code:

• y = 101 for debounce time

• y = 102 for DC current setting

• y = 103 for DC current enable

• y = 104 for Input Channel 1 trigger mode

• y = 106 for Input Channel 2 trigger mode

• y = 108 for tone control

• y = 109 for output 1 contact delay

• y = 110 for output 1 contact mode

• Where z = DIO setting value:

• z = debounce time in ms, valid values are 0-999 (y = 101)

• z = DC current in amps, valid values are 0-2.5 (y = 102)

• z = 1 for DC enabled, 2 for DC disabled (y = 103)

• z = 1 for input trigger type OFF, (y = 104 or 106)

• z = 2 for input trigger type FAULT, (y = 104 or 106)

• z = 4 for input trigger type PULSE TIMING, (y = 104 or 106)

• z = 8 for input trigger type TMR START, (y = 104 or 106)

• z = 16 for input trigger type TRIP, (y = 104 or 106)

• z = 32 for input trigger type FOOTSWITCH, (y = 104 or 106)

• z = 64 for input trigger type RESET, (y = 104 or 106)

• z = 128 for input trigger type RECLOSE, (y = 104 or 106)

• z = 1 for TONE enabled, 0 for TONE disabled (y = 108)

• z = output contact delay time in ms, valid values are 0-9999 (y = 109)

• z = 1 for output contact type FAULT, (y = 110)

• z = 2 for output contact type BREAKER-OPEN, (y = 110)

• z = 4 for output contact type PERMISSIVE, (y = 110)

• z = 8 for output contact type UNBLOCK, (y = 110)

• z = 16 for output contact type OFF, (y = 110)

• z = 32 for output contact type FAULT-NC, (y = 110)

• z = 64 for output contact type RESET, (y = 110)



7.3 PROGRAMMING H INTS

1. Al l control commands should be sent in remote control mode.

2. An automated control program should initiate control by sending the following commandsequence:

<CR> <- empty line (carriage return) to clear any partially sent previous commandPGM <- select program modeLF0 <- turn off line feedsREM <- change to remote control

3. A 0.3 second delay should be added before the execution of a STR command to ensure all MTS-3000internal operations have been completed before entering the FAULT state.


APPENDIX A

ALPHABETICAL RS-232 COMMAND SET

Command Function Section(s)

AI4# Amplitude IDC 7.2.5AIA# Amplitude Ia 7.2.5AIB# Amplitude Ib 7.2.5AIC# Amplitude Ic 7.2.5AIS x y z Amplitude Current Specified 7.2.5AVA# Amplitude Va 7.2.4AVB# Amplitude Vb 7.2.4AVC# Amplitude Vc 7.2.4AVS x y z Amplitude Voltage Specified 7.2.4C2C COM2 Chat 7.2.8COM x y Communication parameters 7.2.8CR0 Carriage Return Off 7.2.8CR1 Carriage Return On 7.2.8CWN Clear warnings 7.2.10DCV x y z DC voltage parameter 7.2.11DEF Default settings 7.2.10DIO x y z Set the specified DIO settings 7.2.12ENA# Enable / Disable outputs 7.2.2F1A x y Frequency 1 Assign 7.2.7F2A x y Frequency 2 Assign 7.2.7F1S # Frequency 1 Source 7.2.7F2S # Frequency 2 Source 7.2.7FIA# Fault Incidence Angle 7.2.10FIS x y Current channel Frequency Source assignment 7.2.7FMD# Set Fault Mode 7.2.3FMD? Interrogate Fault Mode 7.2.3FR1 x y Frequency 1 7.2.7FR2 x y Frequency 2 7.2.7FVS x y Voltage channel Frequency Source assignment 7.2.7HIS x 2 y z p Set Percent Harmonic for specified current channels 7.2.5HVS x 2 y z p Set Percent Harmonic for specified voltage channels 7.2.4IMD# Current Mode 7.2.5LF0 Line Feed Off 7.2.8LF1 Line Feed On 7.2.8LOC Local control mode 7.2.1MFD# Maximum Fault Duration 7.2.2PCF Print system configuration 7.2.9PDS# Print Digital Input Trigger Status 7.2.9PFS Print Fault State 7.2.9PGM Program mode 7.2.8PHT Print phasor table 7.2.9PIS x y z Phase angle of specified current channel 7.2.9PRF # Set Prefault on/off 7.2.2

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL A-1CU M004 01A 0$17$#7(67#6<67(06

ALPHABETICAL RS-232 COMMAND SET

Command Function Section(s)

PTS Print time is seconds 7.2.9PVS x y z Phase angle of specified voltage channel 7.2.6PWF Print waveform generation module configuration 7.2.9PWN Print warnings Detailed 7.2.9PWS Print warnings Summary 7.2.9REM Remote control mode 7.2.1RES Reset 7.2.2RFR x y z Frequency Ramp Parameters 7.2.7STA Start trigger (Enter Static fault state) 7.2.1STP Stop trigger (Enter Postfault state) 7.2.1STR Start trigger (Enter Dynamic fault state) 7.2.1TRM Terminal mode 7.2.8VDC# Sets the DC voltage 7.2.11VER# Version 7.2.10VIC x y z Sets the amplifer mode for the MTS-3030 7.2.3! Repeat Last Command 7.2.10

A-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06########################################CU M004 01A

-3000

arent

m user-

APPENDIX B

POWERSCOPE PROGRAM

B.1 INTRODUCTION

Powerscope is a graphical demonstration and teaching aid for illustrating the capabilities of the MTSfor relay testing.

Figure B.1

B.1.1 Features

• Real-time, display of MTS-3000/MTS-3040/MTS-3060 output phasors• Multi-window mode display or quadrilateral showing symmetrical components and app

impedance for distance relay elements.• Display of relay mho or quadrilateral characteristic on the apparent impedance display• Direct display of three-phase and single phase power• Direct display of unbalance• Delta or wye display modes• Displays quantities as primary or secondary values• Calculates and plots symmetrical components, positive sequence impedance and power fro

entered phasor values in “demo” mode.

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL B-1CU M004 01A . 0$17$#7(67#6<67(06

POWERSCOPE PROGRAM

on the

menu

ing

B.1.2 Operation Instructions

1. Connect the MTS-3000 COM1 port to your PC’s RS-232 port with a standard serial cable. Turn MTS-3000 if desired.

2. Start the program.

B.1.3 Button Bar

Commonly used program functions can be accessed from the button bar below, or from the programbar.

Figure B.2

B.1.4 Configuring the Comm Port

Select View|Comm Port from the main menu to configure the PC communications port. The followdialog box should appear:

Figure B.3

P rin t

A b ou tP o w ersco pe

S y stemC on f igu ratio n

C om m p o rtC on f igu ratio n

D em om o d e

A cq u ire p h aso rsfro m test eq u ip m en t

D isp layp h aso rs

D isp layim p edan ce

D isp laycu rren t

co m p o n en ts

D isp layv o ltage

co m p o n en ts

D isp layp o w er

co m p o n en ts

S cale g rap hto f it

D isp lay L C Dd isp lay co n ten ts

B-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06##################################CU M004 01A

POWERSCOPE PROGRAM

ed.

er baud

isplayand CT

lecting

ose this

The parameters are as follows:

COMM PORT: Select which comm port on the computer is to be used. Serial ports 1 to 4 can be us

BAUD RATE: Select the baud rate used to communicate with the equipment. This sets the computrate. The equipment baud rate must be set manually.

MODE: This setting specifies the communication data format (data bits, parity, stop bits).

B.1.5 System Configuration

Figure B.4

Select View|Sys Configure from the menu to set the system configuration settings. If you wish to dquantities as primary values, enter your system PT and CT ratios here. Otherwise, leave the PT ratio settings at 1, and the program will display secondary values.

When done, click OK.

B.1.6 Operating Modes

B.1.6.1 REAL TIME MODE.

This mode displays the outputs of the MTS-3000 in pseudo real-time. Choose this mode by seView|Acquire Phasors in the menu.

B.1.6.2 DEMO MODE.

This mode is for demonstration purposes or when equipment is not available or connected. Chomode by selecting View|Demo Mode in the menu.The following window should appear:


POWERSCOPE PROGRAM

in this

n ber.

Figure B.5

The phasor and impedance displays will be calculated and drawn according to the data enteredwindow.

B.1.7 Displaying Phasor & Impedance Diagrams

Once either the real-time or demo operating mode is chosen, the phasor and impedance displays caactivated. These displays can be selected using the View submenu or the buttons on the button ba

Figure B.6


POWERSCOPE PROGRAM

-3000lues, and

B.2 PHASORS WINDOW

Figure B.7This window is displayed when View|Display Phasors is selected from the menu. This shows the MTSoutput phasors. Note that this display is drawn based on settings and not on the true measured vacurrents are displayed at 10 times the scale of the voltages.

B.3 SYMMETRICAL COMPONENTS

B.3.1 Current Components Window

Figure B.8


POWERSCOPE PROGRAM

indow

f

egative

indow

o

egative

This window is displayed when View|Display Current Components is selected from the menu. This wdisplays the current symmetrical components:

Ia0 , Ib0, Ic0: zero sequence currentIa1, Ib1, Ic1: positive sequence currentIa2, Ib2, Ic2: negative sequence current

Although all components appear on the display, only Ia0, Ia1 and Ia2 are labelled. Unbalance (the ratio onegative to positive sequence current) is also displayed.

It is usually better to display the symmetrical components in delta mode since the positive and nsequence components each consist of three phasors which often overlap one another.

B3.2 Voltage Components Window

Figure B.9

This window is displayed when View|Display Voltage Components is selected from the menu. This wdisplays the voltage symmetrical components:

Va0, Vb0, Vc0: zero sequence voltageVa1, Vb1, Vc1: positive sequence voltageVa2, Vb2, Vc2: negative sequence voltage

Although all components appear on the display, only Va0, Va1 and Va2 are labelled. Unbalance (the ratiof negative to positive sequence voltage) is also displayed.

It is usually better to display the symmetrical components in delta mode since the positive and nsequence components each consist of three phasors which often overlap one another.


POWERSCOPE PROGRAM

ncepts

. Also,

ts

prcrease.

al. This

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B.3.3 Interpretation of Symmetrical Components Displays

The dynamic display of symmetrical components allows for very easy demonstration of the basic coof symmetrical components.

1. A normal balanced 3Φ system will have no negative sequence or zero sequence componentssymmetrical 3Φ faults will have no negative sequence or zero sequence components.

2. Any unsymmetrical faults involving ground (Φ-G, 2Φ-G) will produce zero sequence componen(current and voltage). The residual current is three times the zero sequence current (Ia0), and can beidentified easily.

Similarly, the residual voltage is three times the zero sequence voltage (Va0).

3. Phase-phase faults produce only positive and negative sequence components (assuming 0efaultcurrents). As the fault approaches the source, the negative sequence voltage components in

For a solid fault at the source (Vf=0), the negative and positive sequence voltages are equeasily can be seen by varying the Φ-Φ fault voltage from nominal to 0, and by watching theunbalance change from 0 to 100%.

Characteristics of standard faults are summarized in the table below:

These characteristics easily can be verified with Powerscope. Here are some other interesting things to try:

Phase Unbalance Select Φ-N mode and start with a balanced 3Φ system. Rotate the phase of one outpand note that this causes the gradual appearance of negative and zero secomponents.

Condition VoltageComponents

VoltageUnbalance

CurrentComponents

CurrentUnbalance

Normal prefault, balanced 3Φ current

+ve sequenceonly

0% +ve sequenceonly

0%

Solid A-G fault (VA=0), no prefault currents

Va1 = 2Va2Va2 = Va0

50% Ia1=Ia2=Ia0 100%

Solid Φ-Φ fault (VBC=0), no prefault currents

No zero sequence, Va1 = Va2

100% No zero sequence,Ia1=Ia2

100%

3Φ fault +ve sequence only 0% +ve sequence only 0%

Solid 2Φ-G fault, (VA=VB=0) Va1=Va2=Va0 100% Ia2 = Ia0Ia1 = 2Ia2

50%


POWERSCOPE PROGRAM

vectorsdjusting

ference,

plot, therformed

e. The

Total negative sequence can be created by interchanging the phase of any two (same as phase sequence reversal). Total zero sequence can be created by athree vectors to be in phase.

B.4 IMPEDANCE WINDOW

Figure B.10

B.4.1 Using the Impedance Window

This window shows the apparent impedance seen by phase and ground relay elements. For restandard mho or quadrilateral relay characteristics can be plotted in this window.

For ground element impedances (Zag, Zbg, Zcg) to be displayed properly on apparent impedance correct zero sequence compensation factor must be entered. Note that this test is normally peassuming a homogenous system (i.e. the angle of the zero sequence compensation factor is 0°).

This can be entered by selecting Edit|Properties in the menu with the impedance window activfollowing dialog window should appear:


POWERSCOPE PROGRAM

e

parentedance

he faulte relay

w the

s whenefined

Figure B.11

The absolute value of the impedances (Zab, Zbc, Zca, Zag, Zbg, and Zcg) are displayed above theimpedance window in magnitude and angle format. If the currents are zero, the impedance value will bdisplayed as infinite.

Examples of interesting tests presented with the impedance window include:

1. A reach test performed by slow ramping of current and voltage can dynamically show the apimpedance approaching and entering the region of protection. When the relay operates, the impshould go to infinity .

2. When testing Zone 2 and 3 elements with a .5 second or higher timers, a dynamic test will show timpedance of the active element entering the region of protection, and then leaving when thoperates.

3. The effect of prefault load on apparent impedances also can be readily demonstrated. If sufficientprefault currents are set, the apparent impedance can be seen outside the region of protection. Highprefault load can cause more than one element to enter the region of protection.

4. A manual test of MTA by ramping phase, within the impedance circle, can dynamically shoimpedance approaching the characteristic boundary on the left and right sides.

B.4.2 Defining & Displaying Theoretical Relay Characteristics

Theoretical mho and quadrilaterial characteristics can be defined in the dialog window which appearEdit|Properties is selected (with the impedance window active). Multiple mho characteristics can be dusing the “Add” button.


POWERSCOPE PROGRAM

rcular

ndow

The parameters which specify the characteristics are:

FORWARD REACH: The forward reach of the element in ohms.

REVERSE REACH: The reverse reach of the element in ohms.

MTA: The maximum torque angle of the element in degrees.

OFFSET REACH: This is the magnitude of any offset of the relay characteristic in secondary ohms.

OFFSET ANGLE: This is the angle of any offset of the relay characteristic in degrees.

ASPECT RATIO: This specifies the aspect ratio of the mho characteristic. Specify 1 for a cicharacteristic, or a value less than 1 for lenticular characteristics.

B.5 POWER WINDOW

Figure B.11

This window is displayed by selecting View|Display Power Components from the menu. This widisplays on the P-Q plane, the power output each phase, and the total three-phase power. The scale of thiswindow is autoranging, based upon the largest of the four power vectors displayed.

B.6 SPECIAL NOTESPowerscope displays are only valid when the MTS-3000 is in the default “LINE” frequency mode.


APPENDIX C

SUMMARY OF ERROR MESSAGES

The following is a summary of the most common error or alarm messages occurring with the MTS-3000.Each of these messages is accompanied by a distinctive long error "Beep". Alarm messages are displayedon the module where the fault condition is detected. Pressing any key will clear the error/alarm message.If the error condition is still present, or re-occurs, the message and long "Beep" wil l likewise re-occur.

Note that, when you press a key to clear an error/alarm, the keypress also will cause whatever action thatkeypress normally would cause. If you want to clear the error/alarm without causing any other action, agood key to press is the "CE" key, since this key normally doesn't do anything except beep.

As noted in (C) below, any error/alarm message not listed here is usually an indication of design-levelproblems with the MTS-3000, and the manufacturer should be notif ied, along with the particulars.

C.1 USER ERRORS - INAPPROPRIATE BUTTON PRESSING

Chg Flt Type 1st: The user tried to perform some action while in a fault type that’s inappropriate forthat particular action. To avoid this alarm, first change to a suitable fault type byentering the following key sequence: MENU | Settings | Fault Type |.

Chg to Vectr 1st: The user tried to perform some action requiring Vector fault type while the systemwas in some other fault type. To avoid this alarm, first change to the Vector faulttype by entering the following key sequence: MENU | Settings | Fault Type | Vector.

Chg VI Cnfig 1st: The user tried to perform some action that’s not compatable with the present VImodule amplif ier configuration (e.g selecting Φ-Φ fault type when there’s only oneACV channel and one ACI channel available). To avoid this alarm, first change to asuitable configuration by entering the following key sequence: MENU | Preferences| VI Module #n | Ch n.

Exceeded L imi ts: The keyboard data just entered is outside the acceptable range for the quantity beingset. Press CE and try again.

Finish # first: The user tried to perform some action while in the middle of entering data forsetting some quantity. The data entry must be completed (or terminated by pressingCE, CE) before this action can be undertaken.

No Qty Selected: The user tried to enter a setting without first selecting a quantity for adjustment.Select a quantity and try again.

Press ENABLE 1st: The user tried to perform some action while the AC outputs were inappropriatelyenabled or disabled. To avoid this alarm, first change the status of the AC outputs(by pressing ENABLE), and then try again.

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL C-1CU M004 01A #######0$17$#7(67#6<67(06


ted toing

data

ssingselect ave isalarms.

tsed to

aldule., fix

ifiersownrm isp

d tolemately

000 zeroccurs,

Remv parl’s 1st: The user tried to perform some action while one or more channels were selected forparalleling. To avoid this alarm, first remove the paralleling by entering thefollowing key sequence: MENU | Settings | Parallel | , and then press theappropriate Fn buttons until there are no channels selected.

Remv ramps 1st: The user tried to perform some action while one or more quantities were selecbe ramped. To avoid this alarm, first remove the ramping by entering the followkey sequence: MENU | Settings | Ramps Disabled | .

Too many Digits: Too many digits were entered (usually after a decimal point) while entering from the keypad. Press CE and try again.

Note: In addition to the errors reported above, some frequently-occurring inappropriate button pregenerate only a long "Beep" without an accompanying message display (e.g. attempting to sline that doesn’t contain any selectable or adjustable quantity). Another inappropriate mopressing the CE key other than in the middle of making a keypad entry. The displaying of messages for these cases was deliberately bypassed to reduce the number of nuisance alarm

C.2 HARDWARE ALARMS

Note: Except for "Output x Error" , all the following hardware alarms result in the amplifier outpubeing set to zero and the AC output enable being turned off (i.e. the system returnprogramming mode).

Bad grnd return : This alarm means that some of the output current from one module is incorrectlyreturning via a different module. This typically occurs when the return neutrconnection from the load is connected to the neutral terminal of some other moThe threshold current for this alarm is approximately 0.5A. To avoid this alarmthe external ground returns such that this doesn’t happen.

Critical Overtemp : This alarm is obtained if the measured temperature of one of the amplsignificantly exceeds the point at which the amplifier should have shut itself dfrom over temperature (and generated a "x:Ovrtmp Shtdwn" alarm). This alaan extra safety precaution and is normally never obtained since the "x:OvrtmShtdwn" alarm occurs first. Although the "Critical Overtemp" alarm is designedisable the AC outputs - if it occurs - there’s most likely some fundamental probwith one or more amplifiers and the system should be powered down immedito prevent further damage.

Missng Zero Csng: This alarm applies only to the VI module and is obtained when the MTS-3detects a missing zero crossing in the AC line (i.e. more than 15 ms of nocrossings), and, as a result, iniates the power down sequence. If this alarm opower the system off and then on to restore the system to normal operation.

C-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06########################################CU M004 01A


Output x Clip’ng (x=A,B,C):

Cur rent channels: This alarm means the load has too high an impedance for theamplifier to deliver the specified current. To avoid this alarm, firstmake sure the load is properly connected with apprpriate heavy guagetest leads. If this doesn't work, enter the following key sequence:MENU | Settings | Curr Range | Lo I / Hi V | to select the high voltagerange. Alternatively, use a lower impedance load or a lower currentsetting.

Voltage channels: This alarm means the load has too low an impedance for the amplif ierto deliver the specified voltage. Use a higher impedance load or alower voltage setting.

Output x Error (x=A,B,C): This alarm is obtained when the amplifier's output doesn’ t match thesetting indicated on the front panel. It indicates either a calibrationerror or some type of problem in the output amplifier for the affectedchannel. In the case of ACV modules, it may also indicate that theoutput load resistance is too low for the amplifier to deliver therequired power, but not low enough that clipping alarms are obtained.

Note: This alarm doesn’ t itself result in the output(s) being turned off.

Pwr Supply Fail: This alarm typicall y occurs when the power supply fuse fails. ContactManta Test Systems if replacing the fuse doesn’t remedy the problem.

x: Overld Shtdwn (x=A,B,C): This alarm is obtained when the indicated amplif ier shut itself downbecause it was dissipating too much power for too long at the presenttemperature. The remedy is to wait until the amplif ier cools down andtry again, or else change to other less demanding operatingconditions. (See the note in the writeup for the "x: Ovrtmp Shtdwn"alarm below.)

x: Ovrt mp Shtdwn (x=A,B,C): This alarm is obtained when the indicated output amplifier has shutitself down from overtemperature. The remedy is to wait until theamplifier cools down and then try again, or else change to other lessdemanding operating conditions.

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL C-3CU M004 01A #####0$17$#7(67#6<67(06


nternal

d occur,

Systems

C.3 SOFTWARE ALARMS

The following alarms are non-critical and should never happen but, if they do, they indicate some i

design problem with the equipment. If these alarms or any other alarms not mentioned above shoul

and you can reproduce the error, please make a note of the particulars and inform Manta Test

Research & Development so that the problem can be corrected.

Bad Argument(s)ãMisc SW ERRnãNo room for msgãShould never beãWould be > Packtsã

C-4 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06########################################CU M004 01A

APPENDIX D

GLOSSARY

Note: For complete details, the relevant section in the manual is listed at the end of each definition.

Advanced Frequency Mode uses twoindependent internally generated frequencysources that can be set to any frequency in therange of 8-1000Hz. (3.3.3.2)

Auto-Reclose Time Delay This is the dead timebetween the time a fault is cleared and the timeauto-reclosure occurs. On the MTS-3000, it’s thedelay between the end of FAULT state and the re-activation of FAULT state. (5.2.9)

Basic Frequency Mode allows one or morechannels to output at Frq1 (8-1000Hz), while otheroutput channels output at the default "LINE"frequency. (3.3.3.1)

Breaker Open Time This is a relaying parameterspecifying the time required for the circuit breakerto open after receiving the trip signal. (5.2.7)

Breaker Close Time (also called Circuit BreakerAdvance Time) This is a relaying parameterspecifying the time required for the circuit breakerto close after receiving the breaker close signal.(5.2.7)

Control Module (CM ) refers to the upper mostmodule in the MTS stack that controls all othermodules. (1.2)

Cur rent M ode The MTS-3030 module usesconvertible amplifiers that can operate in eithercurrent mode or voltage mode. (5.4.2)

Display Mode The Display Mode menu settingallows test specific parameters such as Impedance,Slip frequency, Slope etc. to be displayed on thecontrol module display. (5.2.12)

Dynamic Fault Mode This mode is used toperform timing tests. (4.3.2)

Dynamic Testing Testing of relays usinginstantaneous steps/ramping of voltage and currentinputs to closely simulate conditions during in-service operation. (1.4.6)

External Star t Mode This input trigger modeallows an external signal to control the fault statetransition from PREFAULT to FAULT. (5.7.1.2.)

External Tr igger An external start or stop triggeraction. (3.1.2, 4.4.3, 5.7)

Fault Duration Programmable parameterspecifying the maximum fault duration. (5.2.11)

Fault Incidence Angle The angle in electricaldegrees (referred to the voltage) at which time afault occurs. Sometimes referred to as “point-on-wave”. (5.2.10)

Fault Mode This controls the type and phase offault which is simulated. (5.2.2.2) Also see: StaticFault mode, and Dynamic Fault mode.

Fault Phase The selected phase(s) being faulted.For example, one of the following: A-G, B-G, C-G,A-B, B-C, C-A, ABC. (5.2.2.2)

Fault State The MTS-3000 operates in one of threeunique fault states: Prefault, Fault, and Postfault tosimulate power system conditions prior to, during,and after clearance of the fault. (4.1, 4.1.2, 4.2)

Fault Type Selects the type of fault (Φ-N, Φ-Φ or3Φ) to be simulated. The operation of the MTS-3000 is optimized to suit the particular test beingperformed. (5.2.2.2)

Four-Wire Timing A method for performingtiming events using two wires to a start triggersignal, and two wires to a stop trigger signal.

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL D-1CU M004 01A 0$17$#7(67#6<67(06

GLOSSARY

elt

te. in

-n

n

)

to

s.

he

pget).

air

tede

Harmonic Current Mode This current modeoutputs a current which is the sum of a fundamentaland harmonic current, and which is used forharmonic restraint testing. (4.5.2, 5.2.3)

Hook-up The wiring connections required betweenthe MTS-3000 and the relay under test.

Internal Start Timer Mode In this mode, the timerstarts synchronously with the transition fromprefault state to fault state. (4.4, 4.4.3)

Line Sync Mode In this frequency mode, thevoltage and current outputs are phase and frequencylocked to the input AC line (Mains). (3.3.3, 3.3.3.1)

Local Control Mode Mode used for all frontpanel, manual operation. (7.2.1)

Mains refers to the line input that provides power tothe MTS-3000. (3.3.3, 3.3.3.1)

MTS – modular test system

Operation Mode The operation mode defines howvarious inputs affect the operation of the MTS-3000during fault state. The operation mode may be staticor dynamic. (4.3.2)

Output Contact Mode The auxiliary outputcontacts can be programmed for various operationmodes, such as NO, NC, 52A, 52B, etc. (5.75)

Output Levels The present level of the voltage andcurrent outputs. The output level may be theprefault or fault setting, or off. In prefault state, theoutput level may be set to off using the PREFAULTbutton. This overrides the prefault settings. Inpostfault state, the output level is always off. (3.1.1)

Parallel Current Mode This current modematches the phase angle and amplitude of multipleAC current channels when high current is needed.The total current from all paralleled sources isdisplayed and can be modified with a singleadjustment. (3.3.7, 5.2.4)

Postfault State The postfault state simulates theinputs to the relay after the fault condition and relayoperation. (4.1.3)

Prefault State The prefault state simulates thhealthy inputs to the relay prior to the fauoccurrence. (4.1.1)

Programming Mode This is used to preset ACoutput parameters for either prefault or fault staThe AC outputs are disabled while the system isprogramming mode. (3.1.1)

QuickTest The QuickTest feature provides a builtin suite of automated tests for most commoprotective relays. (6.0)

Relay ID A unique five-digit identificationnumber used to identify a particular relay wheusing QuickTest.

Remote Control Mode Mode used for operationunder computer or external device control. (5.2.1

Stack - the optional modules that are combined make up a particular MTS.

Static Fault Mode This mode is used to performoperate level / pickup tests. (4.3, 4.3.1)

Static Testing Testing of relays using very slowlyvarying inputs to accurately locate pickup point(3.3.2, 4.3.1)

Test Mode The system is in “Test Mode”whenever the AC outputs are enabled via tENABLE button. When the ENABLE LED is lit,the system is in Test Mode. (3.1.1)

Trigger Action An action, such as a start or stotrigger, which causes the MTS-3000 to chanbetween fault states (prefault, fault or postfaul(4.3.2, 4.4)

Two-Wire Pulse Timing Method for timing anevent (such as a voltage pulse), using a single pof wires. (4.4.7)

Variable Frequency Mode In this frequencymode, the voltage and current outputs are generafrom an internal crystal oscillator, and may bvaried between 8Hz and 1000 Hz. (3.3.3, 5.2.6)

D-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06############################# CU M004 01A

GLOSSARY

Vector Mode is the most basic method foroperating the system. The amplitude and phaserelationship of each AC output must be individuallyprogrammed and modified.

V/I Module (VI ) The V/I module or VI refers tothe MTS-3030 module. This module containsconvertible AC output channels. Each channel canoperate in either voltage mode (0-150 V), or currentmode (0-25 A).

Voltage Mode The MTS-3030 module usesconvertible amplifiers that can operate in eithercurrent mode or voltage mode. (5.4.2)

WFG Module WFG refers to waveform generationmodules, such as the MTS-3030, MTS-3040, andMTS-3060.

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL D-3

CU M004 01A 0$17$#7(67#6<67(06

GLOSSARY

D-4 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06############################# CU M004 01A

Primary reference page numbers are indicatedin bold characters.

0 - 9

52A 2-2, D-252B 2-2, 5-21, D-2

A

Advanced Frequency Mode 3-14, 7-8, D-1automated testing 6-1Auto-Reclose Time Delay 2-3, D-1 aux contact 4-1

B

Basic Frequency Mode 3-14, 3-15, D-1baud rate 5-3, 5-15, 7-1, 7-11, 7-12, B-3blocking signal simulation - see unblock signal

simulation 2-2Breaker Close Time D-1Breaker Open Time D-1breaker time 5-5, 5-9

C

calibration 1-2, 5-18, C-3circuit breaker 1-4, 3-8, 3-16, 5-9, 5-21, D-1 COM1 7-12, B-2COM2 7-12, A-1command summary 7-3Control Module (CM) 1-2, 1-4, 2-2 to 2-4, 3-

1, 3-3 to 3-7, 3-10, 3-13, 3-19, 3-23, 3-26, 3-31 to 3-34, 3-38 to 3-41, 4-5, 5-1,5-8, 5-10, 5-15, 6-2, D-1

CT ratio setting B-3 current differential relay - see differential relay

3-22, 3-24, 3-25, 3-28, 4-7, 5-11, 6-17Current Mode 1-3, 3-18, 3-24, 3-27, 4-6, 4-7,

5-15, 7-7, A-1, D-1 to D-3 current modes 4-6 current ramping 2-3, 5-8current range 2-4, 4-6, 5-5, 5-9, 7-7

D

DC current 1-4, 2-2, 2-3, 3-13, 3-14, 3-24, 3-25, 3-28, 3-30 to 3-32, 3-41, 5-6, 5-20,5-21, 7-6, 7-16

DC voltage 1-1, 2-2, 2-3, 3-4 to 3-6, 3-9, 3-15to 3-17, 3-21, 3-22, 3-25, 3-42, 3-43, 7-5, 7-15, A1, A2

directional overcurrent relay 3-35 Display Mode 3-22, 3-25, 3-26, 3-30, 3-34, 3-

38, 5-10, 5-11, 5-13, B-1, D-1Dynamic Fault Mode 1-2, 3-13, 3-14, 3-23, 3-

25, 3-26, 3-29, 3-30, 4-3, D-1 dynamic operation mode 4-5dynamic testing 1-1, 1-2, 2-3, D-1

E

External Start Mode D-1external start trigger 2-3, 4-4, 5-20 external trigger 1-4, 4-2 to 4-5, 5-8, D-1

F

fault duration 5-5, 5-10, 7-4, A-1, D-1fault incidence angle 2-3, 7-15, A-1, D-1fault mode 1-2, 3-4, 3-12 to 3-14, 3-19, 3-23,

3-25, 2-26, 3-29, 3-30, 4-2, 4-3, 5-5 to 5-8, 5-11, 7-5, A-1, D-1

fault phase 3-39, D-1fault state 1-3, 3-2, 3-12, 3-14 to 3-16, 3-23, 3-

27, 4-1 to 4-5, 5-20 to 5-22, 7-5 to 7-10, 7-12, 7-15, 7-17, A-1, A-2, D-1, D-2

fault type 3-19, 3-33, 3-38, 3-40, 3-41, 5-5, 5-6, C-1, D-1

four-wire timing D-1Frequency Adjust Mode 3-14, 3-15, 3-31, 3-

32, 3-34, 3-41frequency limit test 3-34frequency ramping 5-8frequency relay 3-30fuses 1-4

INDEX

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL E-1CU M004 01A 0$17$#7(67#6<67(06

INDEX

,

6,,

-

-

4-

6-

3-,

-

-15,

5,

G

generator excitation system testing V-1ground fault overvoltage relay 3-41

H

harmonic 2-2, 3-23, 3-24, 3-27, 3-41, 6-2, 6-3, 6-16 to 6-19, A-1, D-2

Harmonic current mode 4-7, D-2 harmonic restraint test 2-2, 3-23, 3-27, 4-7, D-

2Hook-up 6-2, D-2

I

impedance display 3-38, B-1, B-4instantaneous element test 3-20internal start timer mode D-2

K

k-factor 3-38

L

Line Sync Mode 3-15, 7-8, D-2Local Control Mode 7-3, A-1, D-2

M

Mains 3-3, 3-8, 3-10, 3-30, 3-31, 3-34, 5-8, 5-9, D-2

menu 3-2 to 3-4, 3-6, 3-15, 3-18, 3-19, 3-22 to 3-25, 3-27, 3-33, 3-34, 3-38, 3-41, 3-43, 4-7, 5-1 to 5-4, 5-7, 5-9, 5-14, 5-15, 5-17 to 5-20, 6-2, 6-5, 6-7, 6-9, 6-11, 6-13, 6-15, 6-18, 7-2, B-2, b-3, B-5, B-6, B-8, B-10, C-1 to C-3, D-1

mho distance relay testing, see also impedance relay 3-10, 3-35 to 3-38, 5-10, 5-11

minimum pickup test 3-19, 3-29, 3-35, 6-4 MTA test 3-36, 3-40MTS 1-2 to 1-4, 3-2 to 3-4, 3-11 to 3-13, 3-16,

3-23, 3-26, 4-1, 4-3, 5-9, 5-20, 6-2, 6-5, 6-7, 6-9, 6-11, 6-13, 6-15, 6-18, A-2, B-1 to B-3, B-5, B-10, C-1, C-2, D-2

MTS-3010 2-1 to 2-4, 3-4, 3-5, 4-4, 6-4, 6-66-7, 6-10, 6-12, 6-14, 6-16, 7-15

MTS-3020 2-2 to 2-4, 7-15 MTS-3030 1-3, 2-2, 3-35, 4-6, 5-15, 6-4, 6-

6-7, 6-10, 6-12, 6-14, 6-16, 7-5, 7-15A-2, D-1, D-3

MTS-3040 1-2, 1-3, 2-1, 2-2, 3-6, 6-2, 6-7, 610, 6-12, 6-14, 7-15, B-1, D-3

MTS-3060 1-2, 1-3, 2-1, 2-2, 3-6, 6-2, 6-4, 66, 6-16, 6-17, 7-15, B-1, D-3

N

negative sequence components B-6, B-7

O

operation mode 3-23, 3-26, 3-36, 3-40, 4-2, 3, 5-20, 5-21, D-2

Dynamic 4-5Static 4-5

operate time test 1-2, 4-3, 6-10, 6-13, 6-14,16 to 6-18

Output Contact Mode D-2output levels 2-1, 3-33, D-2overcurrent relay 3-18, 3-19, 3-35 6-4, 6-6

P

panel testing 1-3Parallel 2-1, 3-18 to 3-21, 3-24, 3-25, 3-27,

30, 3-32, 4-6, 5-5 to 5-9, 6-2, 6-5, 6-76-17, C-2, D-2

Parallel current mode 3-18, 3-24, 3-27, 4-6, D2

phase angle limit test 3-33phase ramping 5-8phase sequence B-8phase-to-phase fault 3-39positive sequence impedance 5-11, 5-12, Bpostfault state 3-2, 3-15, 3-16, 4-1, 4-3 to 4-

5-20, 5-21, 7-4, 7-13, A-2, D-2Powerscope B-1, B-7, B-10prefault state 3-1, 3-2, 3-30, 3-31, 4-1 to 4-

5-20, 7-4, 7-9, 7-10, 7-13, D-2

E-2 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06 CU M004 01A

INDEX

printer 1-1, 3-8, 5-15, 5-18, 6-5, 6-7, 6-11, 6-15, 7-10

Programming Mode 1-3, 3-1, 3-2, 3-15, C-2,D-2

Q

QuickTest 5-1, 6-1 to 6-3, 6-18, D-2

R

ramping 1-3, 2-3, 5-7, 5-8, 6-2, 6-7, 6-11, 6-15,6-18, 6-19, B-9, C-2, D-1

reach test 3-39, 3-40, B-9reclose-into-fault 2-3Relay ID 6-2 to 6-16, 6-18, D-2remote control mode 7-17, A-1, D-2

S

safety 1-3, 3-10, 6-2, 7-3, C-2 SCR output 4-5, 4-6slip frequency limit test 3-34slope test 3-25, 6-16, 6-18Stack - 5-6, 6-1, 6-3, D-1, D-2Static Fault Mode 3-14, 4-2, D-2static operation mode 4-5Static Testing D-2symmetrical components B-1, B-5 to B-7synchrocheck relay 3-33, 5-8

T

target/seal-in 3-21, 3-30, 3-31Test Mode 1-3, 3-1, 3-2, 3-14, D-2timer 3-2, 3-13, 3-20, 3-23, 3-26, 3-29 to 3-31,

3-40, 3-43, 4-1, 4-3 to 4-5, 5-10, 5-20,D-1

External start mode 5-12, 5-13, D-1Internal start mode 5-12

tone 3-5, 3-12, 3-19, 3-21, 3-23, 3-25, 3-26, 3-29 to 3-32, 3-36, 3-39, 4-5, 7-16

transformer differential relay - see differentialrelay 3-22, 3-24, 3-25, 3-28, 4-7, 5-11, 6-17, B-1, B-9, B-10

trigger action 4-3 to 4-5, 5-21, D-1, D-2two-wire pulse timing 4-5, D-2

U

unbalance B-1, B-6, B-7unblock signal simulation 2-2undervoltage inhibit test 3-32, 3-42

V

Var iable Frequency Mode 3-14, 3-31, 5-8, 7-8, 7-10, D-2

Vector Mode. 3-33, 3-37, 3-41, 5-5 to 5-7, D-3

V/I Mod ule (VI) 1-3, 2-4, 3-35, 6-4, 6-6, 6-7,6-10, 6-12, 6-14, 6-16, D-3

voltage limit test 3-33Voltage Mode 1-3, 3-15, 3-16, D-1, D-3 voltage ramping 5-8voltage relay 3-28, 3-30, 5-8

W

WFG Module D-3

X

XON/XOFF 7-3, 7-12

Z

zero sequence compensation factor 3-38, 5-11,5-12, B-8

zero sequence components B-7

MTS-3000 SERIES OPERATION AND REFERENCE MANUAL E-3CU M004 01A 0$17$#7(67#6<67(06

INDEX

E-4 MTS-3000 SERIES OPERATION AND REFERENCE MANUAL 0$17$#7(67#6<67(06 CU M004 01A

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