Terms and Abbreviations - PBworkststcwtx.pbworks.com/f/troubleshotingschematics.pdf · CB - Circuit...
Transcript of Terms and Abbreviations - PBworkststcwtx.pbworks.com/f/troubleshotingschematics.pdf · CB - Circuit...
Terms and Abbreviations
1. A – Ampere – unit of measure for electrical current - (schematic abbreviations) 2. A1 - Schematic abbreviation - Axis Box 1 - (schematic abbreviations) 3. A2 - Schematic abbreviation - Axis Box 2 - (schematic abbreviations) 4. A3 - Schematic abbreviation - Axis Box 3 - (schematic abbreviations) 5. AI - Analog Input 6. Analog signal - A signal that attains an infinite number of different amplitude levels. 7. AO - Analog Output 8. Apparent Power - The power value obtained by multiplying the current by the
voltage (P = I X E). 9. Axial dimension - This term is used for the measurement of the coupler distance
during the generator coupler alignment procedure. 10. CB - Circuit breaker - provides power to individual circuits – also circuit protection. 11. Contactor – Is a signal actuated switch used for supplying of higher three phase
voltages, usually a motor, heater etc… 12. CT - Current Transformer – used by measuring circuits in the main controller and
SEG converter. 13. DE – Drive end 14. DI - Digital Input, high or low state (with the Bachmann system - 0 or 24Vdc) 15. Digital signal - A signal having an integral number of discrete levels or values. (1’s
and 0’s) (24Vdc or 0Vdc). 16. DO - Digital Output – Bachmann M1 system uses outputs of 0 or 24Vdc 17. E - Voltage in Volts – U is voltage on 1.5 Schematics 18. EOC – Electrical to Optical Converter- used for converting electrical signals to light
signals 19. E-Stop - Emergency stop 20. Feedback signal – signal sent back to the processor indicating the status of a
component (usually 0 or 24Vdc . 21. GE – Schematic abbreviation – Generator 22. Grid voltage – See Utility 23. GT – Schematic abbreviation - Gearbox 24. I - Current in Amperes – L is current on 1.5 Schematics 25. Inductive sensor/proximity switch - Senses changes in the magnetic inductance,
outputs pulses 26. K – kilo = 1000 27. LS – Schematic abbreviation - Control Cabinet (Hub) 28. LVMD - Low Voltage Main Distribution (ABB Cabinet) 29. mA - mili amp – unit of measure for electrical current
30. MFR 2U1 - Multifunction relay Mains Supervision/fault relay/current measuring. 31. Motherboard – (backplane) The interface between circuit boards or control
modules. 32. Motor protection /thermal overload – operates with heat, contacts open at a
desired current setting – used for motor and circuit protection 33. Nacelle – is the whole WTG as a unit with enclosures. 34. Nacelle Bottom – bottom enclosure 35. Nacelle Top – top enclosure 36. NC - Normally Closed – indicates the status of a relay or switch contact 37. NDE – Non-Drive End 38. NO - Normally open – indicates the status of a relay or switch contact 39. NS – Schematic abbreviation - Low Voltage Main Distribution Cabinet 40. PF- Power Factor 41. Ph - Phase 42. PLC - Program Logic Control 43. Power factor - In an alternating current circuit, the ratio of true power to apparent
power – it is equal to the cosine of the phase angle, expressed in either decimal or percentage
44. Primary - The input winding of a transformer 45. Program Logic Controller (PLC) – Control system that is programmable. 46. Proximity Switch – Inductive Sensor used for counting Yaw position, Rotor rpm,
and Generator rpm. 47. PT 100 - Resistive thermometer, sensor (100 Ohms at 0ºC) – used for Temperature
Supervision 48. Reactive Current – the component of alternating current that is not in phase with
the voltage 49. Reactive Power - is the product of kilovolts and amperes in a reactive component of
a circuit. 50. Relay – A signal actuated switching device. 51. rpm - Revolutions Per Minute 52. Secondary - The output winding of a transformer 53. SR – Schematic abbreviation – Slip ring 54. SS – Schematic abbreviation - Main Controller Cabinet 55. SUB – Service Update Bulletin - 56. Synchronization - The coincidence of one process or operation to another. 57. TB – Schematic abbreviation - Top Box or Terminal Block 58. Thermal Overload - Motor protection – provides adjustable circuit and motor
protection, manual re-settable.
59. Transformer - A device using electromagnetic induction to transfer electrical energy from one circuit to another.
60. True Power – in an ac circuit, the power actually dissipated in the resistive component, the reactive component consumes no power
61. Turns ratio - The ratio of the number of turns in the primary to the number of turns in the secondary
62. ua - micro amp 63. UPS – Un-interruptable Power supply provides power after grid loss, used for
supplying power to various circuits in case of grid loss. Indicated as USV in 1.5 schematics.
64. Utility – power supplied from the local utility company 65. VisuPro – is the program that allows communication between Bachmann control
system and the turbine PC for viewing/recording data and turbine control (SCADA) 66. WTG – Wind Turbine Generator 67. YC Coil – Closing Coil for the Main Switch (CB1) 68. YU Coil – Under voltage or low voltage coil for the Main Switch (CB1)
Figure 3
Reading Schematics
Figure 4
Sheet 0Section
Section Designation
Current Revision 1.02
Date of drawing Latest Revision or current
revision and date of revision
Sheets affected
Description of change
Section Designation
Map Scale
Map Scale Component Map Location A2
Component Map Location C2
Section in Schematics
This wire maps to the LVMD (NS) section, Sheet 4, map location 3E
Terminal Block X5
Pin Number
Maps to sheet 4 of the same section (main cabinet) map location 1A
Voltage this wire is supplying
Wire designation
Sheet Number
SS identifier for Main Control Cabinet
Component Identification
Component Identification
Fig. 5
Reading Schematics
Digital output 24Vdc energizes relay 18K6
Map location number
Relay 18K6 energizing coil
Light emitting diode
Relay description
Relay contact configuration
Sheet 18
Section Designation (SS)
Sheet 7 map location 3B
Module 18A1
Supply line continues on to sheet 19-map location 1A
Supply line
Comes from sheet 13 map location 8A
Digital output supply
A2 is the negative terminal of the energizing coil
A1 is the positive terminal of the energizing coil
Fig. 6
Reading Schematics
Power Distribution Transformer
Circuit Breaker
Thermostat
Terminal Block 2
Pin numbers of terminal block 2
Mapped position from sheet 3 of main controller (SS)
Thermostat
Fan motor
Fuses
Switch
A dot indicates connecting lines
Fig. 7
Reading Schematics
Uninterruptable power supply line
Power supply 120 to 24
Terminal block X25
Maps to slipring section sheet 1 location 3C
Contact
Terminal block X20
Terminal block pin 5 Top Box section
designation (TB)
Contact 23/24 of relay 12K2 Contact 23/24
X20 pin 6
Contact 33/34
Dotted box indicates external switch
Fig. 8
Reading Schematics
Uninterruptable power supply line
Power supply 120 to 24
Terminal block X25
Maps to slipring section sheet 1 location 3C
Contact
Terminal block X20
Terminal block pin 5 Top Box section
designation (TB)
Contact 23/24 of relay 12K2 Contact 23/24
X20 pin 6
Contact 33/34
Dotted box indicates external switch
Fig. 8
Reading Schematics
Reading Schematics
Figure 10
24V power supply
Feedback - In series with other Overvoltage protection circuits
Part of motor protection circuit
Contact 13/14 of relay 12K2
Solenoid Valve Relays
Component label number
Reading Schematics
Figure 11
Digital output 11.19
Relay 26K2
Contact 33/34 of 12K2
Digital output Description
Reading Schematics
Figure 12
Analog Inputs
26A1 26A2
Isolation Amplifier
Terminal Block in SEG Converter
Motor Protection Circuit
Overspeed Guard
Resistor
Capacitor
To Main Cabinet
To Gearbox
Inductive Sensor
Relay Contact
Switch Contact
Relay Energizing Coil
Internal Relays
Fig. 15
Reading Schematics
Circuit Breaker Feedback Contacts
Digital Inputs
Digital Input Descriptions
Contact Configurations
Relay Description
Fig. 16
Reading Schematics
Power Supply 120Vac to 24Vdc
Overvoltage Protection
Switch Contacts
Map Location
Ground Reference
Contact Configuration
24Vdc Supply Line
Power from Uninterruptable Power Supply
Fig. 17
Reading Schematics
Fig. 18
Reading Schematics
Generator Position Encoder Mounted to Rear of Generator
Terminal Block in SEG Converter
Thermal Overload
MFR 13 (Multifunction Relay) Grid Monitoring
0-20mA Outputs
CT Inputs
Fault Relays
Mains Voltage
Test Terminal block for isolating a single phase from the MFR
Non Can Bus
To Analog Inputs
Fig. 20
Reading Schematics
Thermistor Switches
Feedback to 17A1 DI 11.3 Yaw Motor Temperature PTC
Temperature Sensor
Fig. 21
Reading Schematics
Power Supply 120Vac to 24Vdc
Controls Yaw
Used for Wind Speed and Automatic Tracking of Wind
Supply voltage
Supply voltage
UNIOP interface on Top Box door
To brush wear switches in slip ring compartment of generator
Fig. 22
Reading Schematics