ACB l COMET AIR CIRCUIT BREAKER

MASCHINENBAU HALBERSTADT GROUP, building on its 60 years legacy in power generation, introduces COMET Air Circuit Breaker designed to meet the standards and the requirements of its wide customer base. MBH ACB is the ideal solution to protect electrical equipment, isolate harmful discharges, and extend/improve the operation of industries worldwide.

COMET AIR CIRCUIT BREAKER

INTELLIGENT TRIP DEVICE

ACCESSORIES

CONTROL CIRCUIT & MECHANICAL INTERLOCK

STANDARD APPLICATIONS

DIMENSIONS

CATALOG NO.

3

9

21

27

33

39

43

INDEX

COMETAIR CIRCUIT BREAKER

MBH ELECTRIC | AIR CIRCUIT BREAKER

4

LEGACYMBH Air Circuit Breaker is designed to meet and even surpass the standards and requirements for a wide range of applications:

Buildings

■ Of�ces ■ Hotels ■ Commercial Centers ■ Hospitals ■ Airports ■ Data Centers

Industries

■ Chemical Plants ■ Automotive ■ Mining ■ Factories

Utilities and Infrastructure

■ Electric Energy Generation and Distribution ■ Oil and Gas ■ Water

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FEATURESACB is a compact product that is optimized for package panel system:

■ Enhanced reliability is ensured through modern structural design and excellent breaking capacity. ■ Easy to maintain. ■ Superior switching performance and excellent durability.

Safety

ACB sets the standard for safety, guaranteeing secure operations with its intelligent protection function, which incorporates a smart trip device that automatically kicks into action in the event of network problem. Furthermore, the RS 485 digitalized communication interface immediately displays on its LCD screen any tripping events such as instantaneous ground fault, low voltage trip, current unbalance and overheating. In the latter case, an overheat burn prevention is built-in in the form of a shunt coil.

Highest Reliability

The most important aspect of ACB is its unparalleled reliability, marking it as a superior product in the market. Enhanced reliability is ensured through a modern structural design that provides excellent sturdiness and breaking capacity. In addition, its high precision and reliable power supply source put forth a consistent performance that industries today depend on.

Standardized Compact Size

The ACB comes in a standardized compact size optimized for use in package panel system as well as enclosure installations. This versatility emphasizes the convenience of the ACB, setting it up as the easiest and most streamlined product available.

Easy to Install and Maintain

Featuring an impressively simpli�ed design, the ACB is very easy to install and even easier to maintain. It offers reduced cost in both labor and time when carrying out both operations thanks to its convenient setup. Maintenance is further simpli�ed by its digitalized communication interface, which provides high precision real time monitoring of current, load factor, bus bar temperature and line state, making sure any potential degradation is dealt with swiftly.


6

TYPE

FRAME SIZE (AF)

RATED CURRENT (In) (A) at 40Oc

RATED VOLTAGE (Ue) (V)

RATED INSULATION VOLTAGE (Ui) (V)

RATED IMPULSE VOLTAGE (UiMP) (KV)

FREQUENCY (HZ)

NUMBER OF POLES (P)

SET CURRENT (A) x In

N-PHASE RATED CURRENT (%In)

RATED BREAKING CURRENT (Icu) (KA) IEC60947-2

690V/600V/550V

500V/480V/460V

415V/380V/230V/220V

RATED SERVICE BREAKING CAPACITY (Ics) (%Icu)

RATED CLOSING CURRENT (Icm) (KA) IEC60947-2

690V/600V/550V

500V/480V/460V

415V/380V/230V/220V

RATED SHIRT TIME CURRENT (Icw) KA/1s

OPERATION TIME (ms)Breaking Time

Closing Time

LIFE (No.)

Mechanical

Electrical

DIMENSION WxD (mm)

Fixed Type H:3103P

4P

Draw-Out Type H:4323P

4P

WEIGHT (Kg)

Fixed Type3P

4P

Draw-Out Type3P

4P

■ Technical Description

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XLS06 XLS08 XLS10 XLS12 XLS16 XLS20 XLS25 XLS32 XLS40

F1 F2 F3

630 800 1000 1250 1600 2000 2500 3200 4000

690 690

1000 1000

12 12

50/60 50/60

3, 4 3, 4

0.5~1.0 0.5~1.0

100 100

50 65 85

65 85 100

65 85 100

100 100

105 143 187

143 187 220

143 187 220

50 50 85

40 40

70 70

10.000 20.000

10.000 10.000

314x330.5 365x330 373x322

456x330.5 456x330 489x322

380x425 380x425 410x425

473x425 473x425 525x425

41 42.4 42.4 45 48 59 65

53 55.1 55.1 57.8 61.6 76.7 82.7

65.4 68 68 69.8 75 90 98

83.9 87.8 87.8 92.3 95 117 125

INTELLIGENTTRIP DEVICE


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TYPE USR-2 USR-6

CURRENT RELAY Long & Short Delay, Instantaneous, Ground FaultLong & Short Delay, Instantaneous, Ground Fault, Zone Selective

Interlocking

ADDITIONAL RELAY - Leakage (external CT)

MEASUREMENT FUNCTION - Current (R/S/T/N)

PRE TRIP ALARM -

Overload Protective RelayDO output(alarm) PTA

Ground unavailable when PTA is used

COMMUNICATIONS - Modbus / RS-485

POWERSelf Powered Turns on when current

reaches 20% of rated value

Self Powered- Turns on when current reaches 20% of rated value

- External power used during the communicationAC/DC 110~220V

DC 24~48V

RTC TIMER Availabe Availabe

TRIP DISPLAY LED Long time delay trip- Long time delay

- Long/Short Instantaneous time delay- Ground default

FAULT RECORD - 10ea display default (phase/current/date/time)

EVENT RECORD - 10ea knob setting

OPERATION BUTTON - Reset S/I-LTD (menu/move/enter)

■ USR-2 ■ USR-6

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USR-2 OCR ■ A state-of-the-art, high-speed micro controller is used. ■ The current value can be checked; it displays the load factor and the line status. ■ Easy to identify the faults by displaying trip event. (Long-time delay, short-time delay, instantaneous delay, low-voltage, unbalanced current and overheating).

LEDDisplays Trip Data and Overload Status.

LED �icker indicates that current exceeds 1.13xIn. LED light remains turned on following the tripping of the breaker.


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USR-6 OCR ■ Overload Protection: Long Time Delay Protection. ■ Short-Circuit Protection: Short Time Delay & Instanteneous Delay Protection. ■ Ground Fault Protection: ZSI (Zone Selective Interlocking).

■ Function enables easier interlocking for protection. ■ Advanced MCU:

■ Basic measured current. ■ High-precision measurement.

■ Fault Recording Function: 10 cases of fault type, fault phase, fault value and corresponding time log. ■ 4 Digital Outputs (DO). ■ Communication Function: Modbus / RS485.

LCDIndicator measurement and data of each phase.

RESET KEYReset after OCR relay operation and after Battery Check.

MENUInitial screen, move between setting menus.

ENTERMove to Lower Menu or Input Setting.S/I

Isd: Short Time Delay Current Setting.Tsd: Short Time Delay Time Setting.li: Instantaneous Time Current Setting.

LTDIr: Long Time Delay Current Setting.Tr: Long Time Delay Time Setting.

LEDTrip Data and Overload Status Indicator.

■ PTA (Pre Trip Alarm): Overload Protective Relay DO Output.

■ LTD (Long Time Delay): Long Time Delay Relay Operation indicator.

■ STD/INST (Short Time Delay/Instant): Indicators Short Time & Instantaneous Delay Operation.

■ GFT/ELT: Indicators Ground Fault Operation. ■ Alarm: Overload warning alarm (Turns on

when load current reaches 0.9xIn. Flickers when current reaches 1.05xIn).

MOVE CURSORMove to Menu or Reset; Left/Right Move of screen cursor or setting.

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RELAY CHARACTERISTICS

LONG TIME DELAY PROTECTION

CURRENT RELAYTripping between 1.05 & 1.20xl

lu=lnx...lr=lnx...

Time delay(s)TR @ (1.5xlr)TR @ (6xlr)

TR @ (7.2xlr)

SHORT TIME DELAY PROTECTION

Current Settings (A) lsd=lrx...

Time delay(s) @10xlr

l2t offl2t on

Tsd (max resettable time)Tsd(max break time)

INSTANTANEOUS DELAY PROTECTION

Current Settings (A) li=lrx...

Tripping time max. 50ms

GROUND FAULT PROTECTION

Gorund pick-up(A) lg=lnx...

Time delay(s) @10xln

l2t offl2t on

Tg (max resettable time)Tg (max break time)

LEAKAGE PROTECTION (OPTION)

Current Settings (A) lg

Time delay(s) Tg

OPERATING CHARACTERISTICS

Long-Time, Short-Time& Instantaneous Delay Protection

Ground Fault Protection


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RELAY CHARACTERISTICS

LONG TIME DELAY

■ Overload protection. ■ Time delay that is inversely proportional to the

fault current.1. Standard Current Setting Knob:lr2. Delay Time Setting Knob: tr

■ Operation Time at 6xIr. ■ Setting Stages (9):0.5-1-2-4-8-12-16-20-24-30 Off sec.

3. Relay Pick-up Current ■ Pick-up relay current: Relayed at current of (1.15)xIr or higher.

4. Calculation based on the highest load current among R/S/T/N

SHORT TIME DELAY

■ Over-current protection. ■ Time delay and definite time that is inversely

proportional to the fault current.1. Standard Current Setting Knob: lsd

■ Setting Stage: (1.5-2-2.5-3-4-5-6-8-10-Off)×lr.2. Delay Time Setting Knob: Tsd

■ Operation Time Standard: Operation Time at 10xIr.

■ Inverse Time (lt On): 0.1-0.2-0.3-0.4/sec. ■ Definite Time (lt On): 0.05-0.1-0.2-0.3-0.4/sec.

3. Calculation based on the highest load current among R/S/T/N.

4. ZSI (Zone Selective Interlocking) Instantaneous relay operation under protective interlocking when ZSI function is set.

INSTANTANEOUS TIME DELAY

■ Short circuit protection. ■ When the fault current is above the preset value,

it shall be dealt with within the shortest time possible to prevent accidents.

1. Standard Current Setting Knob: li ■ Setting Range : (2-3-4-6-8-10-12-15-Off)×lu.

2. Calculation based on the highest phase current.3. Overall breaking time shall be below 50ms.

Isd

tsd

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GROUND fAULT DELAY ■ Ground Fault Protection. ■ When the ground current is above the preset value tripping

of the breaker will occur.1. Standard Current Setting Knob: Ig

■ Setting Range :(0.1-0.2-0.3-0.4-0.5-0.6-0.7-0.8-1.0-Off)×ln.

2. Delay Time Setting Knob: tg ■ Inverse Time (lt On): 0.1-0.2-0.3-0.4 sec. ■ Definite Time (lt On): 0.05-0.1-0.2-0.3-0.4 sec.

3. Ground Current=Vector Sum of R-Phase+S-Phase+ T-Phase+N-Phase.

4. ZSI (Zone Selective Interlocking) Instantaneous relay operation under protective interlocking when ZSI function is set.

5. Ground Fault Protecting Function is included in the basic OCGR type (CT Type built-in).

LEAKAGE PROTECTION OPTION

■ Leakage Protection (Optional). ■ When the leakage current is above the set value, it shall be

broken after the time delay.1. Standard Current Setting Knop: Ig

■ Setting Range: 0.5-1-2-3-4-5-10-20-30-Off(A).2. Leakage (GFT)

■ Trip Time: 140-230-350-800ms. ■ Alarm Time: 140-230-350-800-950ms.

3. External CT used and exclusive for ZCT.4. Necessity of using external CT

■ Internal CT Type (Basic Type): Ground Fault Protection Protect 20%~100% of the ACB rated current.

■ In case of a large-capacity ACB, the ground fault operating current will also increase. For example, in case of 4000A ACB, the minimum ground fault relay current is 4000A x 20% = 800A.

■ Installation of an external CT is recommended to control the ground sensitivity current, and it is optional to protect the ground fault (leakage).


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ZONE SELECTIVE INTERLOCKINGA Zone Selective Interlocking function is intended to protect the load equipments when a fault occurs. It minimizes the delay time and reduces damage to the air circuit breaker and load equipments.

■ Following the operation of short-time delay or ground fault functions, in case of a fault, the concerned protective breaker sends ZSI signal after tripping to prevent upstream breakers from useless tripping. Hence the ZSI enforce continuity of service and reduce downtime of critical loads.

■ In order to eliminate the fault condition, the ACB over-current relay performs an instantaneous trip to clear the fault. ■ The upstream breaker, receiving the ZSI signal, shall refrain from tripping for a short preset time period under the Short-Time Delay or Ground Fault Time Delay functions.

■ Upstream breakers that do not receive the ZSI signal shall trip instantaneously. ■ For proper operation of ZSI, downstream breaker tripping time should be set lower than upstream breaker tripping time under Over-Current, Short Time Delay and Ground Fault Functions.

■ In case of Fault-A: ■ ACB1 independently performs the instantaneous trip.

■ In case of Fault-B: ■ ACB2 performs the instantaneous trip and ACB1 delays till the set time, then perform the instantaneous trip if the fault current is not cleared.

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TRIP CHARACTERISTICS CURVE

SHORT-TIME DELAY


18

LONG-TIME DELAY

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INSTANTANEOUS TIME DELAY, GROUND-FAULT

t(s)

*ln

PRE TRIP ALARM (PTA)

t(s)

*ln

ACCESSORIES


22

WIRE TYPE DC 24~30(V) DC/AC 48(V)

#16AWG(1.31) #18AWG(0.823) #16AWG(1.31) #18AWG(0.823)

OPERATING VOLTAGE80m 45m 330m 200m

45m 27m 210m 120m

WIRE SPECIFICATIONS

■ Power consumption 200VA, On a new line: Rated Voltage Vn DC 24 ~30V, DC/AC 48V. ■ Recommended maximum wire length.

RATED VOLTAGE (Vn) OPERATING VOLTAGE RANGE (V) POWER CONSUMPTION(VA/W) TRIP TIME(ms)

DC(V) AC(V) INRUSH STEADY-STATE

24~30 - 0.75~1.1Vn

200 5 50

48~60 48 0.75~1.1Vn

100~130 100~130 0.75~1.1Vn

200~250 200~250 0.75~1.1Vn

- 380~480 0.75~1.1Vn

SHUNT TRIP (MX)

* THE AVAILABLE VOLTAGE RANGE IS THE MINIMUM RATING RANGE OF EACH RATED VOLTAGE (VN)

RATED VOLTAGE (Vn) OPERATING VOLTAGE RANGE (V) POWER CONSUMPTION (VA/W) TRIP TIME (ms)

DC(V) AC(V) PICK UP DROP OUT INRUSH STEADY-STATE

24~30 -

0.65~0.85Vn 0.4~0.6Vn 200 5 50 or under

48~60 48

100~130 100~130

200~250 200~250

- 380~480

CLOSING COIL (XF)

* THE AVAILABLE VOLTAGE RANGE IS THE MINIMUM RATING RANGE OF EACH RATED VOLTAGE (VN)

WIRE TYPE DC 24~30(V) DC/AC 48(V)

#16AWG(1.31) #18AWG(0.823) #16AWG(1.31) #18AWG(0.823)

OPERATING VOLTAGE30.5m 18m 155m 95m

25m 15m 135m 80m

WIRE SPECIFICATION

■ Power consumption 200VA, On a new line: Rated Voltage Vn DC 24 ~30V, DC/AC 48V. ■ Recommended maximum wire length.

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INPUT POWER DC 24~30V AC/DC 48~60V AC/DC 100~130V AC/DC 200~250V AC/DC 380~480V

MOTOR LOAD CURRENT 5A3A1A0.5A0.3A

MOTOR ROTATION (RPM) 16.000~79.000rpm

INSULATED WITHSTAND VOLTAGE 2kV/min

START LOAD CURRENT (max.) Less than 5 times of the load current

INSULATED WITHSTAND VOLTAGE 2kV/min

OPERATING TEMPERATURE RANGE -20 / -60

DURABILITY 20.000 cycles (Load Continuous Operating Times: 2times/min)

CHARGE TIME 5 sec or more

CHARGE END CONTACT 15A at 250V AC

GEAR (MCH)

■ Operating Voltage Range: Voltage 85%~110%.

AL activates only following an OCR tripping action. The control signal is sent containing fault information.

■ In case of a manual reset-reclosing operation is done after the AL (Alarm) switch is reset. ■ In case of an automatic reset, the AL switch resets after operation of the remote reset device.

RATED VOLTAGE (Vn) OPERATING VOLTAGE RANGE (V) POWER CONSUMPTION (VA/W) DELAY TIME (ms)

DC(V) AC(V) PICK UP DROP OUT INRUSH STEADY-STATE

48~60 48

0.65~0.85Vn 0.4~0.6Vn 200 5 1, 2, 3100~130 100~130

200~250 200~250

SDE-2 SDE-6

TYPE RESISTANCE LOAD INDUCTIVE LOAD RESISTANCE LOAD INDUCTIVE LOAD

CONTACTCAPACITY

AC

250V 10A 6A 10A 10A

125V 10A 6A 10A 10A

250V 0.3A 0.3A 3A 1.5A

DC125V 0.5A 0.6A 10A 6A

125V 0.5A 0.6A 10A 6A

NO. OF AVAILABLE CONTACTS Standard OFF - Charge Type, 4NO4NC

UNDER VOLTAGE TRIP DEVICE (MN)

FAULT TRIP INDICATION CONTACT (SDE)


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Manual Reset Button

Manual Reset Button (MRB), used to reset the CB allows re-closing following an OCR tripping operation.

Operation Counter (CDM)

A device used to indicate the number of operations the CB performed.

ON / Off Indication Contact (Of)

4 auxiliary contacts are used to monitor the CB ON/OFF status.

Key Lock

A lock device used to prevent unauthorized operation of certain CB, when using more than 2 CBs.

Lifting Hook

■ A safety device used to easily move CB. ■ Used by attaching the hook to both handles of arc cover.

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Drawout Device (Cradle Mounting Bracket)

Mechanical mounting of CB body on the Cradle.

Chassis Locking (Pad Lock / Position Lock)

ACB is operated in position (CONNECTED, TEST, DISCONNECTED) when drawn-in/out.

When the ACB body is drawn-in/out within the cradle, the handle will be locked at an idle status.

■ LOCK is operated when the draw-in button is popped out. ■ LOCK is cancelled by pressing the draw-in button in order to continue the draw-in/out operation.

Relay Test Equipment

A device to test whether OCR trip relay operates normally without power. ■ Capable to withstand up to 17times the rated current. ■ Input each current, value, size and phase of R/S/T/N. ■ Different line frequencies can be tested. ■ Testing long-time delay, short-time delay, instantaneous, ground fault protection functions.

■ Attached to the door frame. ■ Mounted on the distribution panel to cover the breaker in order to prevent exposure to dust. ■ Transparent cover.

Temperature Sensor

Send alarm signal via RS-485 if temperature rises above the set operating temperature.

Interphase Barrier

Ensures phase-phase clearance.

CONTROL CIRCUIT &MECHANICAL INTERLOCK


28

ELECTRICAL DIAGRAM

Auxiliary

Control Circuit wiring diagramAC 220V / DC 110V

Voltagemodule

ZCT

AC 220V / DC 110V

USR-6Trip relay

USR-6 Power

R11 R22 07 01 01 T1

UVTSHT

S1

b

b

NC NC NC NC NC NO NO NO NO NO

b

a

a

52M

52C

52Z

52Z

L /

L /

L /

L /

L /

S1

S2

S4

S3

M1 C1 11 21 31 13 23 33 T1 TC1 T2 TC203

Com

mon

Reset

OFF

ON

OFF

ON

P P

N

Main circuit Digital trip relay

Aux. NO

Aux. NC

Pre Trip alarm

USR-6 power AC/DC USR-6 Reset

Temperature sensor module

ZCT connections terminals

RS-485 communication

Voltage module

Closing coil

SHT trip coil

UVT power supply

The cause of the accident USR-6 contact

13 14 33 34

31 3211

05

04 07

07

01 02 R11 R22

V1 VN

Tc1 Tc4

E1 E2

485 485

C1 C2

T1 T2

U1 U2

12

UVT Tripcoil

Motorcharge

Closingcoil

Auxiliary contacts CommunicationTemperature

Remote chutdown

N

V1

VN E2 485 05 06 04 03 02 09 U2 T2 M2 C2 12 22 32 14 24 34

V2 V3 E1 485

GFT

L/S/I

Alarm

Charged

Temperaturemodule

Temperaturesensor

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MECHANICAL INTERLOCKSwitches can be interlocked by using proper mechanical interlocks between the ACBs.

■ Horizontal Type

Used for a cable-type mechanical interlocking between 2 draw-out type circuit breakers. The maximum distance between interlocking circuit breakers is 2000mm.

■ Vertical Type

Vertical interlock is normally applied using a mechanical connecting nod to the draw-out type circuit breaker and it is used for the mechanical interlocking between 2 circuit breakers.

CAUTION: User should refer to manual prior to installing mechanical interlock.

SPACE

SPACE


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Draw-out ACB

Internal Structure

Control Terminal

Charge Handle

Rating Plate

Charge/Discharge Display

ON / OFF Display

Draw-in/out Handle, Insertion Point

Draw-in/out Display

Dram-in/out Handle

Protection Relay

OFF Button

ON Button

2

4

6

8

10

10

1

1

3

5

5

7

9

9

11

Closing Coil

Trip Coil

Auxiliary Switch

Arc Extinguishing Chamber

Main Body of CB

Charging Handle

Mechanism Shaft

Closing Spring

Draw-out Mechanism

Draw-out Cam

Moving Contactor

Fixed Contactor

Load Side Conductor

Draw-Out Conductor

Circuit Breaker Connection Conductor

Power Supply Side Conductor

Safety Shutter

Insulation Mold Body

Arc Runner

2

4

6

8

10

12

14

16

18

11

3

5

7

9

11

13

15

17

19

2 3 4 5

6

7

8

9

10 11 12 13

14

15

16

17

18

19

2

4

3

11

68 7

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CONNECTED •TEST •

DRAW-OUT •


DRAW-OUT •


DRAW-OUT •

It is a state where ACB body, main circuit and control circuit are all disconnected. ACB is completely disconnected from cradle.

Check whether ‘DISCONNECTED’ is displayed in the draw-out position display.

It displays the disconnection state of main circuit, ACB body and the connection state of control circuit.

A switching test, Inspection and changing set value of the trip current of the protection relay are possible. Turn draw-out lever till the Test Point.

It displays the normal connection state of panel board circuit and ACB body.

Check whether “CONNECTED” is displayed in the draw-out position display.

STANDARDAPPLICATIONS


34

OPERATING CONDITIONSTemperature Range

■ Use within the range of max. +40 ˚C and min. -5 ˚C. ■ The average 24-hour temperature should not exceed +35 ˚C.

Altitude

■ 2000m or below.

Environmental Condition

■ Relative humidity should be lower than 85% at 20 ˚C. ■ Relative humidity should never exceed 90%. ■ Avoid storage in the presence of oil gas, ammonia gas and corrosive gas.

Storage Temperature

■ Store it at max. +60 ˚C and min. -20 ˚C. ■ The average 24-hour temperature should not exceed +35 ˚C.

Special Operational Environment

■ If the ACB is installed in a high temperature and humid environment, electrical insulation and mechanical performance will be degraded. In this case, it is recommended to increase anti-corrosion resistance.

■ Derating should be considered if ambient temperature exceeds 40 degrees. ■ If the ACB is installed at altitudes above 2000m, heat emission, voltage, conduction capacity and breaking capacity will be re-duced. Insulation level will decrease depending on air pressure.

CCAUTION: Please consult our representatives for operations outside the specified ambient conditions.

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Standard use of ACB

MBH XLS ACBs are used in a wide range of industrial applications to protect equipment, conductors and devices in low voltage distribution networks.

Short Circuit Breaking Capacity

Nominal, overloads and short circuit currents must be determined in order to properly select and setup the ACB. The MBH XLS ACB must be properly sized to interrupt the maximum short circuit current as well as the lowest or weakest short circuit current at its point of installation.

Protective features

The MBH XLS is equipped with a number of protection functions:

■ Overload Protection Function: This feature allows the user the possibility of accurately adjusting the nominal current setting within the range of 0.5xIe. This feature also en-ables overload setting Ir.

■ Time Short-Circuit Protection Function: The user must take into consideration the in-rush currents, weak short circuit currents and fault current while setting of the Time Short Circuit Protection Function.The MBH XLS is designed to interrupt the faulted cur-rent within the required time frame while offering the needed selectivity across multiple levels and avoiding unwanted tripping on normal inrush currents.

■ Instantaneous Short Circuit Protection: This feature enables instantaneous tripping ac-tion against high short circuit currents. The user usually sets the tripping current as a multiple of the primary overload adjustment.

■ Ground Fault Protection Function: This feature grants the user the possibility of protec-tion against ground fault currents thus protecting against damages to equipment and personnel.

Generator Protection

The protection device needs to be adjusted adequately in order to ensure quick and proper response against excessive generator overloading and short circuit conditions. Recommended timed short-circuit setting is 2.5xIr.

STANDARD PROTECTIONfOR ELECTRICAL NETWORKS


36

Motor ProtectionThe user should setup the ACB protective features such as to avoid tripping starting motor current. The following settings for timed short circuit device of a power circuit breaker are recommended:

■ 12xIr with 50ms delay. ■ 12xIe if instantaneous.

The overload protection should incorporate a re-energization delay function in order to allow cooling of conductors and motors following an overload period.

The user should consider including additional protective functions against motor operational anomalies such as phase loss detection and blocked rotor.

Transformer ProtectionTransformers generally draw high inrush current upon energization. The peak inrush current, during the first half cycle, can reach values up to 15 to 25 times the normal transformer rated current.

Protective devices should discriminate between inrush currents and short circuit currents and should not trip during energization. The following settings are recommended for transformer protection:

■ 8xIr delayed 30ms. ■ 15xIe~20xIe instantaneous.

Trip Class 1.2xln 1.5xln 7.2xln

10A t<2hours t<2min 2≤t<10

10 t<2hours t<4min 4≤t<10



IEC 60947-4 TRIP CLASSES

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Metal part Insulated part

A 160 160

B1 30 30

B2 30 30

Metal part Insulated part

A 0 0

B1 30 30

B2 30 30

BREAKER TYPE CURRENT RATING RECOMMENDED COPPER BUSBAR

XLS06 630A1x50x10 or 1x100x5

XLS08 800A

XLS10 1000A 2x60x5 or 1x60x10

XLS12 1250A 2x40x10 or 2x80x5

XLS16 1600A 2x50x10 or 2x100x5

XLS20 2000A 3x50x10 or 3x100x5

XLS25 2500A 4x50x10 or 4x100x5

XLS32 3200A4x100x10

XLS40 4000A

MIN. CLEARANCE FIXED ACB TO HOUSING

MIN. CLEARANCE DRAWOUT ACB TO HOUSING

BUSBAR SIZING

APPLICATION GUIDEClearance DistancesMBH ACB is tailored to break high short circuit current levels in a very short time frame. Breaking such current leads to emission of gas and some debris of conductive fragments.

DIMENSIONS


40

■ Fixed Type (2000A)

■ Draw-Out Type (2000A)

Rated Current T(mm) W(mm)

1250A OR BELOW 10 50

1600A 15 60

2000A 20 60


1600A OR BELOW 15 60

2000A 20 60

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■ Fixed Type (2500~3200A)

■ Draw-Out Type (2500~3200A)


2500A 20 85

3200A 25 85


2500A 20 100

3200A 25 100


42

■ Fixed Type (4000A)


4000A 30 100

■ Draw-Out Type (4000A)


4000A 30 100

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CATALOG NO.

XLS F1 06 3 D M AC2 Mn

SeriesXLS Air Circuit Breaker

no. of Poles 3 3poles4 4poles

FramesF1 630A ~ 1250A

F2 1600A ~ 2000AF3 2500A ~ 4000A

Installation ModeF Fixed TypeD Draw-Out Type

Rated CurrentOption

Accessories Voltage

Under Voltage TripShunt TripUSR External Contact

MnMXOF

***

*** To specify Accessories Voltage.

Auxiliary VoltageDC DC 110VAC AC 110VAC2 AC 220V

OperationM Motorized

H Manual

060810121620253240

630A800A1000A1250A1600A2000A2500A3200A4000A

1

Over Current Trip

Isolating SwitchUSR-2USR-6

normalLCD

012


44

Catalog No. Order No. Product Description

Motorized ACB - Fixed Type - USR-6 (LCD) Relay

XLSF1063F2MDC 130900 ACB, Frame 1, 630A, 3P, Fixed, Motorized, DC 110V, USR-6 (LCD)

XLSF1063F2MAC 130901 ACB, Frame 1, 630A, 3P, Fixed, Motorized, AC 110V, USR-6 (LCD)

XLSF1063F2MAC2 130902 ACB, Frame 1, 630A, 3P, Fixed, Motorized, AC 200V, USR-6 (LCD)




























■ Motorized ACB USR6

www.MBHelectric.de

45


Motorized ACB - Fixed Type - USR-6 (LCD) Relay







XLSF3253F2MDC 130936 ACB, Frame 3,2500A, 3P, Fixed, Motorized, DC 110V, USR-6 (LCD)

XLSF3253F2MAC 130937 ACB, Frame 3,2500A, 3P, Fixed, Motorized, AC 110V, USR-6 (LCD)

XLSF3253F2MAC2 130938 ACB, Frame 3,2500A, 3P, Fixed, Motorized, AC 200V, USR-6 (LCD)

















46


Motorized ACB - Drawout Type - USR-6 Relay

XLSF1063D2MDC 131000 ACB, Frame 1, 630A, 3P, Drawout, Motorized, DC 110V, USR-6 (LCD)

XLSF1063D2MAC 131001 ACB, Frame 1, 630A, 3P, Drawout, Motorized, AC 110V, USR-6 (LCD)

XLSF1063D2MAC2 131002 ACB, Frame 1, 630A, 3P, Drawout, Motorized, AC 200V, USR-6 (LCD)




























■ Motorized ACB USR6

www.MBHelectric.de

47


Motorized ACB - Drawout Type - USR-6 Relay







XLSF3253D2MDC 131036 ACB, Frame 3,2500A, 3P, Drawout, Motorized, DC 110V, USR-6 (LCD)

XLSF3253D2MAC 131037 ACB, Frame 3,2500A, 3P, Drawout, Motorized, AC 110V, USR-6 (LCD)

XLSF3253D2MAC2 131038 ACB, Frame 3,2500A, 3P, Drawout, Motorized, AC 200V, USR-6 (LCD)
















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