07_09_ACB Z Frame

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Loadline Z Frame ACB

Energy Division

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Loadline Z Frame ACB

Dorman Smith Loadline Z Frame ACB is the result of an intensive market research program whichtook into account the requirements of switchboard builders, consultants and end users. Loadline ZFrame ACB is one of the smallest in the market with a 1 second rating (Icw).

InnovationsNew design of built-in UVT that eliminates the need for the controller to be mounted on the sideof the ACB.

New Protection AGR-B Range Relay. The new AGR-B range relay will have an improved LCDdisplay, which will include additional features such as an Ammeter, Zone Interlocking andMulti/Power Meter capabilities. This will also mean some changes to previous closing circuitconfigurations.

Contents Page

Section 1 - ACBs and Over-current Releases

Features 2 - 10

Appearance and Internal Construction 11

Ratings 12 - 13

Types of Mounting 14 - 15

Spring Charge Operation 16

Over-current Releases (OCRs) 17 - 23

ACB Catalogue Number Selection Chart 24 - 25

Section 2 - Factory Fitted Accessories

Drawout Accessories (Fitted as Standard) 26 - 28

Factory Fitted Accessories (Optional) 29 - 35

Factory Fitted Order Codes Chart 36 - 37

Section 3 - Accessories Supplied Loose 38 - 43

Section 4 - Dimensions and Circuit Diagrams 44 - 59

Section 5 - Technical and Application Data 60 - 64

Based Standards

IEC60947-2 InternationalElectrotechnical Commission

EN60947-2 European Standard

AS 3947-2 Australian Standard

NEMA PUB NO.SG3 NationalElectrical Manufacturers Association

ANSI C37.13 American NationalStandard Institute

JIS C8372 Japanese IndustrialStandard

Certification and Authorisation

ASTA, UK ASTA CertificationServices

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Features

The Ultimate in Compactness and

Operational Capability

Icw,1s = Ics for all Loadline Z Frame ACBs

Loadline Z Frame is the worlds first DoubleBreak ACB, having two breakingcontacts per phase. The expressly designed pole structure means that the shorttime withstand rating (Icw, 1sec) is equal to the service short-circuit breakingcapacity (Ics) for all models. Full selectivity is warranted up to the full system faultlevel. Loadline Z Frame ACBs have one of the worlds smallest depth resulting inspace saving in switchboards.

More than twenty design patents have been registered for the ACB.

The height and depth dimensions are identical in all sizes up to 3200A. There aretwo common widths or frame size, from 800-2000A and from 2500-3200A for thestandard series. The panel cut-out size is the same for all types of Loadline ZFrame, which makes it easy to arrange the ACBs in switchboards. Maximum powerfrom minimum volume was central to the design specification. With a depth of290mm for the fixed type and 345mm for draw-out, it is one of the smallest ACBsin the world. ACBs with front connections are available off-the-shelf.

Front connections are especially suitable for smaller-depth switchboards.

2

Section 1

Standard series 800-2000A

High fault series 1250-2000A

2500-3200A

1600-3200A

4000A

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Increased Accessibility from the Front

Enhances ease of installation, operation, and maintenance.

The double insulated design ensures that most accessories can be safely and easily,installed by the user. Control, auxiliary and position switch terminals are mountedat the front on the ACB body for easy access. Horizontal, vertical and frontterminal connections, can also be changed by the user for any last minutealterations. Due to the increased level of harmonics within the distribution network,

the neutral phase is fully rated as standard.

No extra arc space required, vertical stacking permitted

The Loadline Z Frame ACB dissipates all arc energy within its unique DoubleBreakarc chamber. The internal energy dissipation within the ACB allows the clearancedistance of the ACB to nearby earthed metal to be zero. This will assist inminimising switchboard height and costs.

Replacement of the main contacts

The fixed and moving main contacts can easily be replaced in the field, thusprolonging the life of the circuit breaker. Changing each pole takes around15 minutes.

Connection to themain circuit (forfront connections)

Connection to the control circuit

Manual operation

Breaker fixingbolts(optional)

Draw-outoperation

Accessory fitting(Removing thefront coverenablesreplacement ofinternal parts)

No extraarcspacerequired

3

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4

A High Performance and Reliability

Very fast interruption by DoubleBreak system

The DoubleBreak main contact system ensures extremely fast interruption ofshort circuit currents and substantially reduces main contact wear. The internallysymmetrical DoubleBreak structure means the moving contact is isolated fromthe supply voltage even when the ACB is reverse connected. The neutral polesof all Loadline Z Frame ACBs are of early make/late break design. This eliminatesthe risk of abnormal line to neutral voltages, which may damage sensitive

electronic equipment.

DoubleBreak contacts increase service life - electrical and mechanical enduranceratings are the best available and exceed the requirements of IEC 60947-2.

No clamp screws used for the main circuit contact units

There are no clamp screws or flexible leads in the main circuit contact units.This substantially enhances the durability of the main circuit contact units and

improves the reliability in ON-OFF operation.

Easy maintenance

Design of Loadline Z Frame incorporates its isolating clusters and main contacts

on the ACB body allowing for quick easy maintenance of the main electricalcontact points and for maintenance to be completed without having to isolatethe switchboard.

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5

Enhanced Selectivity

Protection relays have LSI characteristics as standard

This provides an adjustable time delay on overload (L) and also the l2t rampcharacteristic (S).

As shown, these are essential to provide selectivity when grading with otherprotective devices such as downstream fuses and upstream relays.

The standard LSI curve provides more than five million combinations of timecurrent characteristics. Zone selective interlocking is available to provide zero timedelay selectivity. As the rated breaking capacity is identical to the rated short-timewithstand current, full selectivity can be achieved.

Rated breaking With INST functioncurrent (at AC440V) With ST delay trip function

Without INST/MCR functions

Rated short-time withstandcurrent (for 1 sec)

Frame size andrated current

Performance

Z2 Z2800A1250A1600A

2000A

1250A

1600A2000A

Z4Z3 2500A3200A

Z3 1600A2000A2500A

3200A

4000A

65kA(std)

80kA(high)

85kA(std)

100kA(high)

100kA(std)

A substantial improvement in life cycles

The Loadline Z Frame series has achieved very high life cycles.

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Loadline Z Frame ACB Provides Positive Protection forElectric Power Systems

6

The Loadline Z Frame ACB series is equipped with anRMS sensing over-current release (OCR) having awide range of protection functions and capabilities.

For general feeder circuits (L-characteristic)

The DoubleBreak main contact system ensures extremely fast interruption ofshort circuit currents and substantially reduces main contact wear. The internallysymmetrical DoubleBreak structure means the moving contact is isolated fromthe supply voltage even when the ACB is reverse connected. The neutral polesof all Loadline Z Frame ACBs are of early make/late break design. This eliminatesthe risk of abnormal line to neutral voltages, which may damage sensitiveelectronic equipment.

DoubleBreak contacts increase service life - electrical and mechanical enduranceratings exceed the requirements of IEC 60947-2.

Overload protectionAdjustable from 40100% of rated current. True rms detection up to the 19thharmonic. Neutral protection for all those Triple-N harmonics such as 3rd, 9thand 15th. Also a thermal memory is available on the AGR21B/31B.

A B C

Standard OCR withadjustment dial TypeAGR-11BL

Standard OCR with LCD-Ammeter Type AGR-21BL

Enhanced OCR with LCD-Analyser Type AGR-31BL

Backlit LCD installed

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For full details refer to the tables on page 21

N-phase protection function (optional)

In three-phase, four-wire systems that contain harmonic distortion, the 3rdharmonic may cause large currents to flow through the neutral conductor. TheN-phase protection function prevents the neutral conductor from sustainingdamage or burnout due to these large currents. Available in all OCRs.

Ground fault trip function (optional)

This function eliminates external relays to provide a ground fault protection toTN-C or TN-S power distribution systems on the load side (unrestricted). Groundfault protection on the line side is also available as an option. (restricted).

Earth leakage trip function (optional)

Used in conjunction with an externally mounted Zero-phase Current Transformer(ZCT), this function provides protection against leakage to earth of very smalllevels of current. Trip or alarm indication and contact output is available to

enhance the level of system protection.

Phase rotation protection function (optional)

This function detects the negative-phase current occurring due to reverse phaseor phase loss and prevents burnout of a motor or damage to equipment.

Advanced LCD display, over-current relay

The AGR-31B OCR comes standard with an LCD display. It can monitor andindicate phase currents, voltages, power, energy, power factor, frequency, andmore. For features refer to page 20.

Remote communications protocols (optional)

Data communications via Modbus protocol, an open network, are supported.

Energy MeasurementI, V, kW, MWh, kVar, cos, frequency

Intelligent Fault AnalysisStatus, fault type, fault size, tripping time, fault history

Maintenance InformationTrip circuit supervision, contact temperature monitoring.

For details please refer to page 10. For other protocols please contactTyco Electronics.

Contact temperature monitoring function (optional)

This function monitors the temperature of the ACBs main contacts. An alarmindicates when the temperature exceeds 155C. Continuous monitoring of thecontact temperature provides valuable input for preventative and predictivemaintenance programs.

Zone Interlocking (optional)

In many conventional discrimination systems, short time delays are used to allowa short-circuit current to be tripped by the circuit breaker nearest the fault. Thedisadvantage of this type of system is during a fault; considerable thermal andmechanical stresses are placed on the entire system. With the Loadline Z FrameZone Interlock system the breaker nearest the fault (irrespective of the short timedelay setting) will trip first.

Example of operation:

If a fault occurs in Zone 2, only Zone Interlock A will sense any fault current fault,a no fault signal will be sent by Zone Interlock B & C, consequently ZoneInterlock A trips the ACB immediately, overriding its short time delay.

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Double opening and closing coils

Double opening and closing coils provide extended control system redundancyto an ACB. Double coils allow designers to implement back-up tripping andclosing systems.

It provides the end user with ultimate reliability on critical UPS circuits connected

to critical loads.

Protection relay performance

Ensure that the ACB you specify suffers no loss of performance when tripped by

an external protection relay!

The Loadline Z Frame ACB suffers no loss in performance when tripped throughan external protection relay.

Some competitors ACBs have reduced breaking performance when an external

protection relay is used.

Inform

Inform Selectivity Analysis Software is shaped around the extensive range of DormanSmith circuit breakers, but also includes a large number of complimentary protectivedevices such as high and low voltage fuses to BS88/IEC269, IDMT Relays to BS142/IEC255. As a result, Inform can assist in protection device grading from thetransformer primary to the point of final distribution, giving the facility to produce

over-current and earth fault studies.

65kA 85kA 100kA

ExternalRelay

100kA

Loadline Z frame ACB.With internal or externalprotection relay.

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Meeting customer requirements

Loadline Z Frame ACB provides solutions to satisfycustomer needs

Switchboard builder

Compact size for high packing density

No extra arc space required for clearance

Low temperature dissipation

Built in trip supervision circuit

Fully rated neutral as standard

Terminal connections and accessories are field changeable

Uniform panel cut out size

Consultant

Restricted and unrestricted ground fault protection in one relay

LSI characteristic curves as standard

True rms protection

Integral reverse power protection and load shedding relay

End user

Self checking protection relay and tripping coil

Built in relay tester available on AGR21B/22B/31B can check on line withouttripping the ACB

Contact temperature monitoring

Fault diagnosis - type of fault, magnitude, tripping time and trip history

High making capacity for operator safety

Communication via BMS or SCADA system

Main contacts can be changed within around 15 minutes per pole

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10

Communication facility added to Loadline Z Frame ACB

Loadline Z Frame is equipped with a communication interface unit that allows data exchange with a host PC via a Modbus opennetwork. Data communicated includes measurements, fault log, maintenance information, ON/OFF status, settings and control(ON/OFF/RESET) signals.

Fault log

Item Modbus

Transmission standard RS-485

Transmission method 2-wire half-duplex

Topology Multi-drop bus

Transmission rate 19.2 kbps max.

Transmission distance 1.2 km max. (at 19.2 kbps)

Data format Modbus-RTU or ASCII

Max. number of nodes 132

Cause Whichever trip function, LTD, STD, INST,or GF, is activated is then transmitted.

Fault current The fault current at which the breakertripped open is transmitted.

Trip pickup time The trip pickup time is transmitted.

Maintenance informationTripping circuit The tripping coil is always monitored formonitoring disconnection. If the breaker is not open

within approx. 300 ms of a trip signaldelivered from the OCR, an alarm signalis generated.

Data measurementPhase current The phase current I1, I2, I3, IN, Ig and max.

current Imax are measured andtransmitted.

Line-to-line voltage V12, V23 and V31 are measured.

Active power The 3-phase power, reverse power andmax. power are measured.

Demand active power The demand active power is measured.

Accumulated power The accumulated power is measured.

Power factor The circuit power factor is measured.

Frequency The frequency is measured.

Network interface I/Ospecifications

On-screen PC monitor

Communication network

Modbus

Up to 31 units can be connected per system

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11

Appearance and Internal Construction

Internal Construction

Appearance

ON-OFFcycle counter(optional)

Position switchterminals (optional)

Auxiliary switchterminals

Control

circuitterminals

Draw-outcradle

Springchargeindicator

Springcharginghandle

ON button

Draw-outhandleinsertion

hole

Position

indicator

ON-OFFindicator

OFF button

Breakingfixing bolts(optional)

Key locklocation

(optional)

Positionpadlock

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Ratings

Standard Series

12

Frame size Z2 Z3 Z4

Ampere rating(A) 800 1250 1600 2000 2500 3200 4000

Rated current (max.) [I/n](A) IEC, EN, AS 800 1250 1600 2000 2500 3200 4000

JIS 800 1250 1600 2000 2500 3200 3700

NEMA, ANSI 800 1250 1540 2000 2500 3200 3700

Marine 800 1250 1600 2000 2500 3200 4000

Neutral pole Amperes frame (A) 800 1250 1600 2000 2500 3200 4000

Number of poles 3 4 3 4 3 4 3 4 3 4 3 4 3 4

Rated primary current of over-current 800 1250 1600 2000 2500 3200 4000

Release [I/CT](A)

for general feeder circuit use

AC rated insulations voltage [Ui](V.50/60Hz) 1000 1000 1000 1000 1000 1000 1000

Rated operational voltage [Ue](V.50/60Hz) 690 690 690 690 690 690 690

AC rated breaking cap [kA sym rms]/making

cap [kA peak ac 690V 50/105 50/105 50/105 50/105 65/143 65/143 75/165

[Ics=Icu] 440V 65/143 65/143 65/143 65/143 85/187 85/187 100/220NEMA ac 600V 42/96.6 42/96.6 42/96.6 42/96.6 50/115 50/115 65/149.5

480V 50/115 50/115 50/115 50/115 65/149.5 65/149.5 75/172.5240V 65/149.5 65/149.5 65/149.5 65/149.5 85/195.5 85/195.5 100/230

JIS ac 550V 50/105 50/105 50/105 50/105 65/143 65/143 75/165460V 65/143 65/143 65/143 65/143 85/195.5 85/195.5 100/230220V 65/143 65/143 65/143 65/143 85/195.5 85/195.5 100/230

dc 600V 40/40 40/40 40/40 40/40 40/40 40/40 40/40250V 40/40 40/40 40/40 40/40 40/40 40/40 40/40

NK ac 690V 50/115 50/115 50/115 50/115 65/153 65/153 75/179450V 65/153 65/153 65/153 65/153 85/201 85/201 100/245

LR, AB ac 690V 50/115 50/115 50/115 50/115 65/153 65/153 75/179GL, BV 450V 65/153 65/153 65/153 65/153 85/201 85/201 100/245

Rated impulse withstand voltage [Uimp](kV) 12 12 12 12 12 12 12

Rated short time withstand 1s 65 65 65 65 85 85 100current[Icw][kA rms] 3s 50 50 50 50 65 65 85

Latching current (kA) 65 65 65 65 85 85 100

Total breaking time (s) 0.03 0.03 0.03 0.03 0.03 0.03 0.03

Closing operation time

Spring charging time (s) max. 10 10 10 10 10 1010

Close time (s) max. 0.08 0.08 0.08 0.08 0.08 0.08 0.08

No. of operating cycles

Mechanical life with maintenance 30000 30000 30000 25000 20000 20000 15000without maintenance 15000 15000 15000 12000 10000 10000 8000

Electrical life without maintenance AC460V 12000 12000 12000 10000 7000 7000 5000AC690V 10000 10000 10000 7000 5000 5000 2500

Weight (Kg) draw-out type 73 86 73 86 76 90 79 94 105 125 105 125 139 176

Outline dimension (mm)

Fixed type a 360 445 360 445 360 445 360 445 466 586 466 586 - -

b 460 460 460 460 460 460 -

c 290 290 290 290 290 290 -

d 75 75 75 75 75 75 -

Draw-out type a 354 439 354 439 354 439 354 439 460 580 460 580 631 801

b 460 460 460 460 460 460 460

c 345 345 345 345 345 345 375

d 40 40 40 40 40 40 53

1

2

3

4

5

8

11

10

7

9

9

6 6 6 6 6 6

6 6 6 6 6 6

6 6 6 6 6 6

Values in open air at 40C (45C for marine applications).

For double-pole ACBs use outside poles of three-pole

ACB.

Rated insulation voltage depends on applied standard:

1000V ac according to IEC 60947-2.

Rated operational voltage depends on applied standard:

690V according to IEC 60947-2.

Cannot apply IT earthing system, ie, insulated from earth.

For 500V ac.

Please contact Tyco Electronics for dc application.

Three-poles in series should be applied for 600V dc.

Applicable to only three-pole ACBs.

For vertical terminals or horizontal terminals.

For more information see page 60.

1

6

7

8

9

10

11

2

3

4

5

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High Fault Series

Frame size Z2 Z3

Ampere rating(A) 1250 1600 2000 1600 2000 2500 3200

Rated current (max.) [I/n](A) IEC, EN, AS 1250 1600 2000 1600 2000 2500 3200

JIS 1250 1600 2000 1600 2000 2500 3200NEMA, ANSI 1250 1600 2000 1600 2000 2500 3200

Marine 1250 1600 2000 1600 2000 2500 3200

Neutral pole Amperes frame (A) 1250 1600 2000 1600 2000 2500 3200

Number of poles 3 4 3 4 3 4 3 4 3 4 3 4 3 4

Rated primary current of over-current 1250 1600 2000 1600 2000 2500 3200

Release [I/CT](A)

for general feeder circuit use

AC rated insulations voltage [Ui](V.50/60Hz) 1000 1000 1000 1000 1000 1000 1000

Rated operational voltage [Ue](V.50/60Hz) 690 690 690 690 690 690 690

AC rated breaking cap [kA sym rms]/making

cap [kA peak ac 690V 55/121 55/121 55/121 85/187 85/187 85/187 85/187

[Ics=Icu] 440V 80/176 80/176 80/176 100/220 100/220 100/220 100/220NEMA ac 600V 42/96.6 42/96.6 42/96.6 50/115 50/115 50/115 65/149.5

480V 65/149.5 65/149.5 65/149.5 80/184 80/184 80/184 80/184240V 80/184 80/184 80/184 100/230 100/230 100/230 100/230

JIS ac 550V 55/121 55/121 55/121 85/196 85/196 85/196 85/196460V 80/176 80/176 80/176 100/230 100/230 100/230 100/230220V 80/176 80/176 80/176 100/230 100/230 100/230 100/230

dc 600V 40/40 40/40 40/40 40/40 40/40 40/40 40/40250V 40/40 40/40 40/40 40/40 40/40 40/40 40/40

NK ac 690V 55/128 55/128 55/128 85/201 85/201 85/201 85/201

450V 80/186 80/186 80/186 100/233 100/233 100/233 100/233

LR, AB ac 690V 55/128 55/128 55/128 85/201 85/201 85/201 85/201GL, BV 450V 80/186 80/186 80/186 100/233 100/233 100/233 100/233

Rated impulse withstand voltage [Uimp](kV) 12 12 12 12 12 12 12

Rated short time withstand 1s 80 80 80 100 100 100 100current[Icw][kA rms] 3s 55 55 55 75 75 75 75

Latching current (kA) 65 65 65 85 85 85 85

Total breaking time (s) 0.03 0.03 0.03 0.03 0.03 0.03 0.03

Closing operation time

Spring charging time (s) max. 10 10 10 10 10 1010

Close time (s) max. 0.08 0.08 0.08 0.08 0.08 0.08 0.08

No. of operating cycles

Mechanical life with maintenance 30000 30000 30000 25000 20000 20000 20000without maintenance 15000 15000 15000 12000 10000 10000 10000

Electrical life without maintenance AC460V 12000 12000 12000 10000 7000 7000 7000AC690V 10000 10000 1000 7000 5000 5000 5000

Weight (Kg) draw-out type 79 94 79 94 79 94 105 125 105 125 105 125 105 125

Outline dimension (mm)

Draw-out type a 354 439 354 439 354 439 460 580 460 580 460 580 460

580 b 460 460 460 460 460 460 460

c 345 345 345 345 345 345 345

d 40 40 40 40 40 40 40

1 2

3 4

5

6

7

14

9

13

8

10 11

10 11

Values in open air at 40C (45C for marine applications).

Values for draw-out type with vertical terminals.

For double-pole ACBs use outside poles of three-pole

ACB.

Four-pole ACBs without Neutral phase protection can not

be applied to IT earthing systems.

Rated insulation voltage depends on applied standard:


Rated operational voltage depends on applied standard:


Contact Tyco Electronics for details.

Please contact Tyco Electronics for dc application.

Three-poles in series should be applied for 600V dc.

Will apply soon.

Applicable to only three-pole ACBs.

For vertical terminals.

For more information see page 60.

1

8

9

10

12

11

13

2

3

4

5

6

7

12

When the ACB is used without Instantaneous trip function MCR should be set to work. The rated breaking capacity will reduce to the level of the latching current without

MCR function.

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Types of Mounting

Draw-out typeThis type of ACB consists of a breaker body and a draw-out cradle. The breaker bodycan be moved within or removed from the draw-out cradle that is fixed in theswitchboard There are four breaker body positions: CONNECTED, TEST ISOLATED,and WITHDRAWN. The switchboard panel door can be kept closed in theCONNECTED, TEST, and ISOLATED positions (shut-in three positions).

Connected position

Both the main and control circuits are connected for normal service.

Test position

The main circuit is isolated and the control circuits are connected. This positionpermits operation tests without the need for opening the switchboard panel door.

Isolated position

Both the main and control circuits are isolated. The switchboard panel door doesnot need to be opened.

Withdrawn position

The breaker body is fully withdrawn from the draw-out cradle.

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Fixed type (standard series only)This type of ACB has no draw-out cradle and is designed to be directly mounted in

the switchboard.

Connection methods

Main circuit terminals

Three types of main circuit terminal arrangements are available: vertical terminals,horizontal terminals and front connections. Different types of terminal

arrangements can be specified for the line and load sides.

Control circuit terminalsControl circuit terminals are front located to allow easy wiring/access.

The terminal blocks (for auxiliary switches, position switches, and control circuits)are positioned on the top of the ACB front panel and can be accessed from thefront for wiring.

M4 screw terminals are standard.

Horizontal terminals

Vertical terminals

Front connections

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Spring Charged OperationManual charging typeFor this type of ACB, the closing springs are charged by means of the springcharging handle. ON/OFF operation of the ACB is performed by means ofON/OFF buttons on the ACB.

Charging the closing springsPumping the spring charging handle by hand charges the closing springs.

Closing the ACBPressing the ON button on the ACB closes the ACB.

Opening the ACBPressing the OFF button on the ACB opens the ACB.The ACB cannot be closed as long as the OFF button is pressed.

Motor charging typeFor this type of ACB, the closing springs are charged by means of a motor.ON/OFF operation of the ACB can be performed remotely. A manual chargingmechanism is also fitted to facilitate inspection or maintenance work.

Charging the closing springsA motor is used to charge the closing springs.When the closing springs are released to close the ACB, they are automaticallycharged again by the motor for the next ON operation.

Closing the ACBTurning on remote ON switch enables the ACB to be remotely closed. Anti-pumping mechanism Even if the ON switch is kept on, ACB closing

operation is performed only once.To close the ACB again, remove the ON signal to reset the anti-pumpingmechanism and then reapply the ON signal.

If ON and OFF signals are simultaneously given to the ACB, the ON signalis ignored.

Opening the ACBFor opening the ACB remotely, specify the shunt trip device (See P. 30) or theunder-voltage trip (See P. 34).

Operation power supply

Rated voltage Applicable voltage range (V) Operation power supply ratings

(V) CHARGE/ OFF operation Motor inrush Motor steady-state Closing command

ON operation (Note1) current (peak) (A) current (A) current (peak) (A)

AC 100 85-110 7 1.1 0.48

AC 110 94-121 7 1.1 0.39

AC 120 102-132 7 1.1 0.37

AC 200 170-220 4 0.7 0.24

AC 220 187-242 4 0.7 0.19

AC 240 204-264 4 0.7 0.18

DC 24 20-26 14 4 1.65

DC 48 41-53 10 1.6 0.86

DC 100 85-110 6 0.8 0.39

DC 110 94-121 6 0.8 0.37

DC 125 106-138 6 0.8 0.31

DC 200 170-220 4 0.5 0.19

DC 220 187-242 4 0.5 0.18

Note 1: For the ratings refer to the shunt trip device of page 30.

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Over-current Releases (OCRs)The AGR series of over-current releases (OCRs) featuring high reliability andmultiple protection capabilities is available for Loadline Z Frame. Controlled byan internal 16-bit microprocessor, the OCR provides reliable protection againstover-current.

The OCR L-characteristic is for general feeder applications.

The range consists of:

Type AGR-11BL: Standard OCR with adjustment dialType AGR-21BL: Standard OCR with LCD

Type AGR-31BL: Enhanced OCR with backlit LCD

Optional protection functions of the OCR include those against ground fault, earthleakage, under-voltage and reverse power.

Pretrip alarm function can also be installed.

Protective functions

1 Adjustable long time-delay trip function LT

RMS sensing is used to accurately read through distorted waveforms.

HOT start mode (applicable to L-characteristic of AGR-21BL,31BL)

HOT or COLD start mode is user-selectable.

In HOT start mode, the OCR operates faster than in COLD start mode in responseto an overload. The HOT start mode gives protection, taking account of thebehaviour of loads under heat stress.

2 Adjustable short time-delay trip function ST

The ST delay trip function has a definite time delay characteristic and a rampcharacteristic. These characteristics are switch-selectable.

The ramp characteristic provides close selectivity with downstream circuitbreakers or fuses.

The definite time characteristic operates when the load current reaches 1000% ormore of the rated current [In].

The ST trip function is factory set to the definite time characteristic.

17

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3 Adjustable instantaneous trip function INST/MCR

The INST trip function trips the ACB when the short circuit current exceeds thepickup current setting, irrespective of the state of the ACB.

The making current release (MCR) trips the ACB when the short circuit currentexceeds the pickup current setting during closing operation. After the ACB isclosed, the MCR is locked and kept inoperative.

The INST and MCR are switch-selectable for AGR-21BL and 31BL. (AGR-11BL is

INST only, MCR is not selectable) Note: The MCR needs the control power. If thecontrol power is lost, the MCR provides the INST trip function only.

4 Adjustable pretrip alarm function PTA

The pretrip alarm function provides an alarm signal via the alarm contact(1a-contact) when the load current exceeding a predetermined value lasts fora predetermined time.

The pretrip alarm is automatically reset when the load current drops to thepredetermined value.

Note that this function needs the control power.

5 Ground fault trip function GFThe peak value sensing is used (the residual current of each phase is detected).

The GF pickup current can be set between 10% and 100% of the CT rated primarycurrent [ICT].

The ramp and definite time characteristics are switch selectable. The GF tripfunction comes into operation with the definite time characteristic when the loadcurrent reaches 100% or more of the CT rated primary current [ICT].

The GF trip function is factory set to the definite time characteristic.

When using a three-pole ACB in a three-phase, four-wire system, a separateneutral CT must be used (supplied).

6 Earth leakage trip function ELT (For AGR-31BL only.)

In conjunction with an external Zero phase Current Transformer (ZCT), the ELTfunction provides protection against earth leakage.

The ELT pickup current can be set at 0.2, 0.3, 0.5 and 1A (medium sensitivity) or3 and 5A (low sensitivity).

This function needs the control power.

Note 1: For details on specifications of the external ZCT, contactTyco Electronics.

Note 2: The ELT function comes usually with operation indications. If youneed nothing but earth leakage indications without earth leakage

tripping operation, please specify at the time of ordering.Note 3: The ELT function is available up to 2500A rated current [In]

7 N-phase protection function NP

This NP function is available on four-pole ACBs and prevents the neutralconductor from suffering damage or burnout due to over-current.

The NP trip pickup current can be set between 40% and 100% of the OCR ratedprimary current.

It is factory set to a value specified at the time of ordering.

Note 1: The NP trip function comes usually with operation indications. TheNP trip pickup current setting is shared by the LT trip function.

Note 2: The HOT start mode is available for AGR-21BL and AGR-31BL. Theoperating time for the NP trip function is linked to that for the LTtrip function.

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NON setting and fail-safe feature

1 Non settingSetting a trip pick up current function to NON allows you to render thecorresponding protection function inoperative.

Functions having the NON option include LT, ST, INST/MCR, and GF.

Appropriate NON setting will be a useful means for optimum selectivity.

2 Fail-safe featureThe OCR has a fail-safe mechanism in case protection functions are improperly setto NON.

If the ST and INST trip pick up current functions are both set to NON, the fail-safe mechanism will activate the INST trip function to trip the ACB when a faultcurrent equal to or more than 16 times the rated current [In] flows throughthe ACB.

If the ST and MCR trip pick up current functions are both set to NON, the fail safemechanism will activate the ST delay trip function to trip the ACB when a faultcurrent equal to or more than 10 times (5 times for generator protection) therated current [In] flows through the ACB.

Field test facility

Type AGR-21BL and 31BL OCRs are equipped with a field test function to verify the

long time delay, short time delay, instantaneous and ground fault trip featureswithout the need for tripping of the ACB.

To check type AGR-11BL, use the type ANU-1 OCR checker (optional).

Operation indication function

1 Indication via single-contact (AGR-11BL)

When the LT, ST, INST or GF trip function is activated, an output is generated via1a-contact.

The 1a-contact will turn off after 40 ms or more.

A self-hold circuit is needed.

2 Indication via individual contacts (AGR-21BL & 31BL)

When the LT trip, ST trip, INST/MCR trip, GF trip, ELT, NS, REF, UVT, pretrip alarm,or contact temperature monitoring function is activated, LCD will indicate theiroperation individually and output is generated via the corresponding contact. TheOCR also has a self-diagnostic feature that monitors the internal tripping circuits. Ifdetecting any fault in the circuits, this feature turns on the system alarm indicator.The control power is needed.

Operation indicationsO: Self-hold (Note 1)X: Auto-reset

: status indication: Not applicable

Protective characteristic L characteristic

Function LCD Contact

LT NP O OST O

INST/MCR O

GF (Ground fault) or O OELT (Earth leakage)

OH (Contact

temperature monitoring) O O

(Note 2) NS (Reverse phase) O O

REF (Line side GF) O O

Trip indication *1

PTA (Pretrip alarm) X X

(Note 3) UV (Under-voltage alarm) OSpring charge indication

System alarm O O

O (note 4)

Note 1: To reset the motionindication, press the resetbutton.

Note 2: Only one function can beselected from OH, NS, REFor trip indication.

Selection of two or more functionsinvolves manual connection of theircontrol circuits (customconfiguration). Contact Tyco

Electronics for details.Note 3: Only one function can be

selected from UV or springcharge indication.

Selection of two functions involvesmanual connection of their controlcircuits (custom configuration).Contact Tyco Electronics for details.

Note 4: Motion indication contactsare commonly used for STand INST/MCR.

*1: A switch is used to indicate theACB has been tripped. This switchis activated whenever the off

button, the over-current tripdevice, shunt trip device or under-voltage trip device is activated.

(Note 3)

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Voltage Switch contact ratings (A)

(V) Resistive load Inductive

AC 250 3 3250 0.1 0.1125 0.5 0.530 3 3

3 -1 Contact ratings of trip indicator and spring charge indicator

DC

Voltage Current (A)

(V) 1 Single contact 2 Individual contacts

Resistive load Inductive load Resistive load Inductive load

AC 250 8 3 0.5 0.2250 0.3 0.15 0.27 0.04125 0.5 0.25 0.5 0.230 5 3 2 0.7

3 -2 Contact ratings for other contacts

DC

OCR with advanced LCD display, type AGR-31B

(contact Tyco Electronics for details)

1 Monitoring various data on LCD

OCR can monitor,

Phase current (A) of I1, I2, I3 and their max. peak current

Current (A) of IN, Ig

Line voltage (V) of V12, V23, V31 and their max. peak voltage (or phase voltage(V) of V1N, V2N, V3N and their peak voltage)

Active power max. (kW)

Demand active power max. (kW)

Power factor (cos )

Electric energy (kWh/ MWh/ GWh)

Frequency (Hz)

Trip history

Fault current is monitored and the operation cause is indicated on LCD and viaindividual contacts.

Note 1: The supply voltage to the OCR for indicating the main circuit voltage orpower must not exceed 250V ac. If the main circuit voltage exceed 250V ac, astep-down power transformer is needed. When ordering the ACB, state the step-down ratio of the transformer you will use.

2 Gives the system alarm with number on the LCD for the followingabnormal function.

Trip function fail

MHT circuit break

20

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21

OCR specifications

Protection

characteristicsProtection relay Protection Functions

Standard protection

Standard protection relays

Long

time

Short

time

Instantaneous Unrestricted Restricted N-phase

protection

N-phase Indication and monitoring

Indication

Single

contact

Individual

contacts

Ammeter Energy

analyser

Monitoring

Ground fault

S REF NPUREFL

Over-current

releace (OCR)

Available as standard

Available as option Not available

2 Only one function can be selected from OH, NS, REF or trip indication.Selection of two or more functions involves manual connection of their controlcircuits (special specification). Contact Tyco Electronics for details.

3 Only one function can be selected from UV or spring charge indication.Selection of two or more functions involves manual connection of their controlcircuits (special specification). Contact Tyco Electronics for details.

For full operational information see pages 17 to 20

If the control power is not supplied or is lost, each function operates as follows:

LT, ST, INST Operates normally

GF Operates normally

When the CT rated primary current [ICT] is less than 800A and the GF

pick up current is set to 10%, the GF becomes inoperativeMCR Operates as INST

PTA 1-channel PTA Is inoperative

ELT Is inoperative

LED indicator on OCRs with Is on momentarily or offsingle-contact indication

Contact output from OCRs with Turns off after 40 ms or moresingle-contact indication

Contact output from OCRs with Is inoperativeindividual contact indication

LCD No display

Field test facility Is inoperative

Protection

characteristicsProtection relay

Standard protection relays

Over-current

releace (OCR)

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L-characteristic for general feeder circuits (Type AGR-11BL, 21BL, 31BL)

Setting range of protection functions

Protection functions Setting range

Adjustable long time-delay trip characteristics

LT

Pick up current [IR] (A) [In]X(0.80.850.90.951.0NON); 6 graduations

Non tripping when load current ([IR]X1.05). Tripping when ([IR]X1.05)< load current ([IR]X1.2)

Time-delay [tR] (s) (0.51.252.551015202530) at 600% of [IR]; 9 graduations

Time-delay setting tolerance (%) 15% +150ms0ms

Adjustable short time-delay trip characteristics

ST

Pick up current [Isd] (A) [In]X(11.522.5346810 NON); 10 graduations

Current setting tolerance (%) 15%

Time-delay [tsd] (ms) Relay time 50 100 200 400 600 800; 6 graduations

Resettable time (ms) 25 75 175 375 575 775

Max. total clearing time (ms) 120 170 270 470 670 870

Adjustable instantaneous trip characteristics

INST or MCR (For AGR-11B, INST only)

Pick up current [Ii] (A) [In]X(246810121416 NON); 9 graduations


Adjustable pretrip alarm characteristics [In]X(0.750.80.850.90.951.0); 6 graduations

Pick up current [IP1] (A) 7.5%

Current setting tolerance (%) (5101520406080120160200) at [IP1] or more; 10 graduations

Time-delay [tP1] (s) 15% +100ms 0ms

Time-delay setting tolerance (%)

Adjustable ground fault trip characteristics

GF N ote: Set [Ig] to 1200A or less

Pick up current [Ig] (A) [ICT]X(0.10.20.30.40.60.81.0NON); 8 graduations


Time-delay [tg] (ms) Relay time 100 200 300 500 1000 200 ; 6 graduations



Ground fault trip characteristics on line side

REF (AGR-21B, 31B only)

Pick up current [IRE F] (A) [ICT]X(0.10.20.30.40.60.81.0NON); 8 graduationsCurrent setting tolerance (%) 20%

Time-delay (s) Inst

N-phase protection characteristics

NP

Pick up current [IN] (A) [ICT]X(0.40.50.630.81.0); Factory set to a user-specified value Non tripping

when load current ([IN]X1.05) Tripping when ([IN]X1.05)< load current ([In]X1.2)

Time-delay [tN] (s) Tripping at 600% of [IN] with LT time-delay [tR]

Time-delay setting tolerance (%) 15% +150ms 0ms

Reverse phase protection characteristics

NS (AGR-21B, 31B only)

Pick up current [INS ] (A) [In]X(0.20.30.40.50.60.70.80.91.0); 9 graduations


Time-delay [tNS ] (s) 0.40.81.21.622.42.83.23.64; 10 graduations

Time-delay setting tolerance (%) 20% +150ms0ms

Adjustable earth leakage trip characteristics

ELT (AGR-31B only)

Pick up current [IR] (A) 0.20.30.51 (Medium sensitivity) or 35 (Low sensitivity)

Current setting tolerance Non operate below 50% of [IR], Operate between 50% and 100% of [IR]

Time-delay [tR] (ms) Relay time 100 200 300 500 1000 2000 ; 6 graduations



Under-voltage alarm characteristics

UV (AGR-31B only)

Recovery setting voltage (V) [Vn]X(0.80.850.90.95); 4 graduations

Setting voltage (V) [Vn]X(0.40.60.8); 3 graduations

Time-delay (s) 0.10.51251015203036; 10 graduations

Control power AC100120V DC100125V

AC200240V DC200250V

DC48V

DC24V

Power consumption: 5 VA

Common Common)

Common)

)

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Values of [ICT] and [In]

Type Applicable Rated current [In](A)

[ICT] [ICT] [ICT] [ICT] [ICT](A) X0.5 X0.63 X0.8 X1.0

800 400 500 630 8001250 630 800 1000 12501600 800 1000 1250 1600



Z2 (STD) 2000 1000 1250 1600 2000Z3 (STD) 2500 1250 1600 2000 2500Z3 (STD) 3200 1600 2000 2500 3200Z4 (STD) 4000 2000 2500 3200 4000



Z2 (HIGH) 1250 630 800 1000 1250Z2 (HIGH) 1600 800 1000 1250 1600Z2 (HIGH) 2000 1000 1250 1600 2000Z3 (HIGH) 1600 800 1000 1250 1600Z3 (HIGH) 2000 1000 1250 1600 2000Z3 (HIGH) 2500 1250 1600 2000 2500Z3 (HIGH) 3200 1600 2000 2500 3200

Protection characteristics

23

Z2(STD)

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Loadline Z-Frame ACB Selection Chart

Example: Drawout ACB, three-Pole, 65kA, 1600A with horizontal terminals and manual charging.21BL OCR with LSIG protection, Pretrip alarm and 240V ac control voltage.

11BL 31BL No OCR

ACB frame size

Standard ACB

breaking capacity

High Series ACBbreaking capacity

Z2 Frame

Fixed Drawout

4-Pole 3-Pole 4-Pole 3-Pole 4-Pole

Fixed Drawout Drawout

Z3 Frame Z4 Frame

AC Controlvoltage

200-240Vacor none on 11BL

AC Controlvoltage

110-120Vac

DC Controlvoltage

200-250Vdc

DC Controlvoltage

100-125Vdc

DC Controlvoltage48Vdc

DC Controlvoltage24Vdc

3-Pole

21BL

PG

(LSIG

+PT)

Items supplied as standard on all ACBs1. IP31 door flange2. 4 NO AB auxiliary switches3. Mechanical indication of spring status4. Mechanical open and close buttons and indicators5. Open and close button padlock facility6. Test report for ACB and OCR (when fitted)

7. Operation manual

Items supplied with draw-out ACB1. Draw-out handle2. Draw-out portion indication3. Draw-out portion position padlock facility4. Fixed portion main safety shuttles padlockable5. Fixed portion control circuits socket shutters

Factory fitted accessories1. Castell/cylinder lock/padlock facility2. Shunt trip3. UVR fixed4. Aux switches5. Position switches (draw-out only)6. Mechanical Interlocks

7. Spring charged indicator switch8. Auto spring discharge device

(draw-out only)9. Under-voltage alarm10. Remotely tripped indicator switch11. Restricted ground fault12. Contact temperature monitoring13. Phase rotation protection

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21BL

Z2 Frame

Drawout

3-Pole

65kA

1600A

Horz terms

Manual charging

PG (LSIG+PT)

AC Control Voltage

200 - 240Vac

Order Codes

Example

Selected

Example

Order Code

Z2

Z2D

Z2D3

Z2D3J

Z2D3J16

Z2D3J16H

Z2D3J16H0

Z2D3J16H0K

Z2D3J16H0KD

Z2D3J16H0ADA

Frame Size

Z2 = Z2 Frame Z3 = Z3 Frame Z4 = Z4 Frame

Body Type

D = Drawout F = Fixed

Number of Poles

3 = 3-pole 4 = 4-pole

Breaking capacity

J = 60 - 65kA K = 80 - 85kA L = 100kA

08 = 800A

12 = 1250A

16 = 1600A

20 = 2000A

25 = 2500A

32 = 3200A

40 = 4000A

Terminal typeH = Horizontal top and bottomV = Vertical top and bottomF = Front top and bottom

HV = Horizontal top, vertical bottomHF = Horizontal top, front bottomVH = Vertical top, horizontal bottomVF = Vertical top, front bottomFH = Front top, horizontal bottomFV = Front top, vertical bottom

Charging type0 = Manual1 = 240V ac2 = 220V ac3 = 200V ac

4 = 120V ac5 = 110V ac6 = 100V ac7 = 24V dc

8 = 48V dc9 = 100V dc10= 110V dc11 = 125V dc

12 = 200V dc13 = 220V dc

9. Lifting plates10. Control circuits terminal cover11. IP55 cover12. OCR checker13. Motor step-down transformer

(220V ac motor to be specified)14. Capacitor trip device

(48V dc shunt trip to be specified)15. Mechanical interlock cables

Loosegear accessories1. Shutter padlocking device (pair)2. Fixing bolts (draw-out only)3. Mal insertion device (draw-out only)4. Test jumper cable 5 meters5. ACB lifters6. Spare draw-out handle

7. Terminal barrier8. Cycle counter

OCR Control VoltageA = None on 11BL or200-240V acB = 200-250V dcC = 48V dc

D = 100-120V acE = 100-125V dcF = 24V dc

OCR type

Order No OCR 11BL 21BL 31BL +Modbus +Zone +EarthCode Comms Interlock Leakage

D

J K L M N P Q R S T U

OCR functions

Order OCR LT ST INST/ PTA GF NPCode Type Function MCR

ABCDFGHJ

11BL

21BL or31BL

AlGL

PSPG

AL + NPGL + NP

PS + NPPG + NP

11BL

21BL or31BL

Current rating

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Section 2

26

Draw-Out Accessories(Fitted as standard)Main circuit safety shutters

The main circuit safety shutters automatically conceal the main circuit contacts onthe draw-out cradle when the ACB is drawn out.

The top and bottom shutters operate independently and can be separatelypadlocked in the closed position.

Up to three padlocks (with 6 hasp) can be installed on each side usingpadlocking unit. (Padlock not supplied).

In the closed position, the shutters are locked to the extent that they cannot beeasily unlocked by hand. They can be unlocked and held open if required for the

purpose of inspection or maintenance.

Control circuit safety shutter

The control circuit safety shutter covers the control circuit contacts, ensuring safety.

Position padlock lever

Using the position padlock lever prevents the breaker body from inadvertently beingdrawn out. The position padlock lever in the pulled-out position locks the breakerbody in the CONNECTED, TEST or ISOLATED position. Up to three padlocks (with

6 hasp) can be installed.

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Current transformer for neutral line (separate type)

When using a three-pole ACB with the ground fault protection function to protecta three-phase, four-wire system against ground fault, this current transformer (CT)should be fitted to the neutral line of the system.

This CT is supplied a standard with all three-pole ACBs with ground fault OCRs.

For the four-pole ACB, a measuring CT instead of the neutral line CT is already

built into the neutral phase of the ACB when the ground fault protection is fitted.

Outline dimension of CT for neutral line

Restricted ground fault

The over-current trip device of Loadline Z Frame provides a ground faultprotection on the line side (optional) as well as on the load side. When the ACBis used for protection of a three-pole, four-wire system, the same currenttransformer for the neutral line shown above is provided.

Z2 Z3

Rated 800A Primary 1250 A Current (A) 1600 A 1600 A

Z2 Z3 Z4

Rated 2000 A 2000 APrimary 2500 ACurrent (A) 3200 A 4000 A

Rated secondary current is 5A

Rated secondary current is 5A

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ON-OFF button cover

An ON-OFF button cover prevents inadvertent or unauthorised operation of theON or OFF button. It can be locked with up to three padlocks with 6 hasp.

Padlocks are not supplied.

Door flange

A door flange can be used as a decoration panel that covers the cut-out on theswitchboard panel and provides IP31 protection.

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Factory Fitted AccessoriesLocking Devices (factory fitted)

Castell interlock

The key interlock is a system of interlocking between ACBs, each fitted with a keylock of lock-in OFF type.

A key must be inserted to release the lock before the ACB can be closed.

The ACB must be opened and locked in the OFF position before the key canbe removed.

Utilising the lock-in OFF type key lock feature and then a limited number of keys,by default, provides an effective and reliable interlock system.

Using the same keys also allows interlocking between an ACB and other devices(such as a switchboard door).

ACBs can be supplied with a type FS-2 Castell lock (with an angular movement90 clockwise to trap key) or the provision to fit a Castell lock.

A double Castell interlocking facility suitable for applications such as UPS systemsis available as a special specification contact Tyco Electronics.

Facility or full option including locks are available, see following order code chart.

Cylinder lock

The key lock is the lock-in OFF type that locks the ACB in the open position.

When the ACB is fitted with a key lock, the operator cannot operate the ACBunless using a matched key, see following order code chart.

Example: Interlock for prevention of parallel feeding from two sources

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Padlockable device

Permits the ACB to be padlocked in the OFF position. Max. three padlocks with 6hasp can be fitted. Padlocking is possible only when ON-OFF indicator shows OFF.When the ACB is padlocked in the OFF position both manual and electrical closingbecome inoperative, but the charging of the closing spring by manual or motor isstill possible.

Note 1: OFF padlock facility cannot be fitted with key lock or key interlock.

Order code Description

0 Not fitted

1 Castell ref DS1 fitted



4 Castell provision for FS2 type lock


6 Cylinder lock OFF

7 Padlock device fitted

8 Castell symbol A fitted

9 Castell symbol B fitted

*

* (With angular movement 90 clockwise to trap key)

Shunt trip rating (Continuously rated type)

Order Rated Operational Peak excitation Steady-state Opening timecode voltage voltage current current (max.)

(V) (V) (A) (A) (ms)

0 Not fitted

1 AC240 AC168264 0.18 0.12 40

2 AC220 AC154242 0.19 0.13

3 AC200 AC140220 0.24 0.16

4 AC120 AC84132 0.37 0.24

5 AC110 AC77121 0.39 0.26

6 AC100 AC70110 0.48 0.32

7 DC24 DC16.826.4 1.65 1.140

8 DC48 DC33.6-52.8 0.86 0.57

9 DC125 DC87.5-137.5 0.31 0.21

u DC100 DC70-110 0.39 0.26

v DC110 DC77-121 0.37 0.25

w DC200 DC140-220 0.19 0.13

x DC220 DC154-242 0.18 0.12

y DC30 DC21-33

Continuously-rated shunt trip device (factory fitted)

The continuous-rated shunt trip device allows the ACB to be opened when anexternal protection relay against over-current or reverse power is activated.

Because of its continuous rating, the device can also be used to provide anelectrical interlock to the ACB.

Continuously rated shunt trip and under-voltage trip cannot be fitted to the sameACB. However, instantaneously rated shunt trip can be used together with under-voltage trip with special specification. Special double opening and closing coils are

available. Contact Tyco Electronics for details.

40

Please contact Tyco Electronics.

* *

*

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Under-voltage trip device (UVT) (factory fitted)

The under-voltage trip device (UVT) trips the ACB when the control voltagedrops below the opening voltage. When the control voltage is restored to thepick up voltage, the ACB can be closed. The pick up voltage is fixed to 85% ofthe rated voltage.

The UVT consists of a tripping mechanism and an under-voltage trip controldevice. The trip control device is available in two types, standard and delayed.

Type standard provides an instantaneous trip to the ACB when the control voltagedrops below the opening voltage. The delayed type provides a delayed trip to theACB when the control voltage remains below the opening voltage for at least 500ms. Adding a push button switch (with normally opened contacts) betweenterminals 24 and 30 allows the ACB to be tripped remotely.

Tripping signal is 48v dc/5 mA.

Apply tripping signal for at least 80ms. If a constant tripping signal is applied an/o auxiliary switch must be used in series with the PB.

Ratings

Order code Rated Opening Pick up Coil excitation Powervoltage voltage voltage current Consumption (VA)

Standard Delayed 50-60Hz (V) (V) (V) (A) Normal Reset

0 Not fitted

1 D 240 84-168 204

2 E 220 77-154187

3 F 200 70-140 170

4 G 120 42-84 1025 H 110 38.5-77 93.5

6 J AC100 35-70 85

7 K 440 154-308 374

8 L 415 145-290 352

9 M 380 133-266 323

A *DC24 8.4-16.8 20.4

B *48 16.8-33.6 40.8

C * 100 35-7085

Under-voltage trip control circuit (for ac)

*

0.1 8 10

Soon to be available. Contact Tyco Electronics for details.*

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Auxiliary switches (factory fitted)

The auxiliary switches operate during the ACB ON/OFF operation.

Connections to the switches are made via screw terminals. The auxiliary switchesfor draw-out type ACBs operate in the CONNECTED and TEST positions.

The auxiliary switches for ACBs conforming to classification societys rules operatein the CONNECTED position only.

The auxiliary switches have change-over contacts and are available for generalservice and for microload.

The standard contact arrangement of the auxiliary switches is 4c.

(Form c: Change-over, single gap, three terminals)

Suited to electronic circuits

Note: 4c is the maximum arrangement when any one of the ground faultprotection on the line side, zone interlock, external display, orcommunication function is incorporated or in the case of type AGR-31BLOCR with the ground fault trip function incorporated.

Note 1: The chattering of b-contacts due to ON-OFF operation of the ACB lasts forless than 20 ms.

Note 2: Do not supply different voltages to contacts of a switch.

Order code For general service For microload Total contacts

0=Supplied as std 4c 4c

1 7c 7c

3 4c 3c 7c

2 10c 10c

4 7c 3c 10c

**

*

*

Auxiliary switch ratings

Category For general service For microload

Resistive Inductive ac: cos 0.3 Resistive Inductive ac: cos 0.6 Min. appl.

load (A) load (A) dc: L/R 0.01 load (A) load (A) dc: L/R 0.007 load

AC 5 5 0.1 0.1100-250V

AC 5 5 251-500V

DC30V 1 1 0.1 0.1

DC 1 1 125-250V

Voltage

DC5V

1mA

**

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Position switches (factory fitted)

The position switch operates to give an indication of the breaker position:CONNECTED, TEST, ISOLATED and INSERT.

There are two contact arrangements: 2c and 4c.

Connections to the switches are made via screw type terminals.

The following table lists the available types of the switches.

Position switch operation sequence

INSERT position means the breaker body is in any position between ISOLATEDand CONNECTED.

Voltage Resistive load (A) Inductive load (A)

(COS = 0.6, L/R = 0.07)

AC 100-250V 11 6

DC 250V 0.3 0.3

DC 125V 0.6 0.6

DC 30V 6 5

DC 8V 10 6

Order code Type Number of Contact Arrangement

contacts Insert Isolated Test Conn

0 None fitted

1 ALR-0101P 2c 0 1 0 1

2 ALR-1111P 4c 1 1 1 1

3 ALR-0211P 4c 0 2 1 14 ALR-0112P 4c 0 1 1 2

5 ALR-0202P 4c 0 2 0 2

Position switch ratings

CONNECTEDposition switch

TESTposition switch

ISOLATEDposition switch

INSERTposition switch

ISOLATED TEST CONNECTED

a- contact ON

a- contact ON

a- contact ON

a- contact ON

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Mechanical Interlock Horizontal Type (factory fitted)

The mechanical interlock uses a cable system to provide a positive interlockbetween two or three ACBs. In conjunction with an electrical interlock, it willenhance safety and reliability of power distribution systems.

Interlocking is possible between any frame size within the Dorman SmithFrame Range.

A configuration

B configuration

C configuration

1 1

3 3 3

1 2 1

Mains 1 Mains 2 Generator

Mechanical Interlock

Mechanism Type

A Configuration

Any one breaker can be closed outof three. Each breaker to be orderedseparately with appropriate mechtype.

Example:-

Breaker reference Mains 1 requiresmech type.

Breaker reference Mains 2 requiresmech type.

Breaker reference Generatorrequires mech type.

B Configuration

Any two breakers can be closed outof three.

C ConfigurationAny one breaker can be closed outof two.

Order Codes

0 = None fitted

1 = Mechanism Type

2 = Mechanism Type

3 = Mechanism Type

Cable pairs to be orderedseparately see page 41

1

2

3

1

2

1

Spring charge indicator switch (factory fitted)

This switch can be used to indicate that the closing springs have been fully charged.

For contact ratings of the switch, see table 3 -1 on page 20.

See following accessory for order code.

Under-voltage alarm function UV (factory fitted)

(for AGR-31B only)This function monitors the main circuit voltage and gives an alarm on the LCDand an output signal via an alarm contact when the voltage drops below thesetting voltage.

The alarm is activated when the main circuit voltage drops below the setting voltage(selectable from 40%, 60% or 80% of the rated main circuit voltage [Vn]), and isdeactivated when the main circuit voltage rises to the recovery setting voltage(selectable from 80%, 85%, 90% or 95% of the rated main circuit voltage [Vn]).

If the rated main circuit voltage exceeds 250V ac, a step-down power transformer isneeded. When ordering the ACB, state the step-down ratio of the transformer youwill use.

Note 1: The under-voltage alarm function is disabled unless the main circuitvoltage has once risen to the recovery setting voltage or higher.

Note 2: If the under-voltage alarm function is used in conjunction with the under-voltage trip device (see page 31), an alarm may occur after the ACB tripsopen, depending on the alarm setting voltage.

Order code: 0 = NoneOrder code: 1 = Spring charge indicator switch fitted

Order code: 2 = Under-voltage alarm fitted

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Automatic spring discharge device (factory fitted)

This device allows the charged closing springs to be automatically released whenthe ACB is drawn out.

ANSI or NEMA-compliant ACBs require this option.

Order code: 0 = None 1 = Fitted

Trip indication switch (factory fitted)

This switch indicates when the ACB has been tripped from a source other thanthe OCR unit.

See phase rotation protection accessory for order code.

Restricted ground fault trip function (factory fitted)

(for AGR-21BL and AGR-31BL only)

Restricted and unrestricted ground fault protection is available as option.This enable protection against ground fault on the line side of the ACB.

Restricted ground fault protection is only available with PG function.

See phase rotation protection accessory for order code.

Contact temperature monitoring function OH (factory

fitted) (for AGR-31BL only)

The HEAT function prevents the ACB from suffering damage due to overheat.

It monitors the temperature of the ACB main contacts, and gives an alarm onthe LCD and an output signal via the alarm contact (1a-contact) when thetemperature exceeds 155C. The alarm can be manually reset when thetemperature drops to a normal level.

This function needs the control power.See phase rotation protection accessory for order code.

Phase rotation protection function NS (factory fitted)

(for AGR-21BL and AGR-31BL only)

This function detects the negative-phase current occurring due to reversephase or phase loss and prevents burnout of a motor or damage to equipment.The protection set point ranges from 20% to 100% of the main circuit ratedcurrent [In].

Order code:0 = None fitted1 = Trip indicator switch fitted2 = Restricted ground fault fitted3 = Contact temperature monitoring

4 = Phase rotation protection fitted

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Loadline Z-Frame Accessories - Factory Fitted Order CodesHow to Order Factory Fitted AccessoriesExample (See Page 25):- Z2D3J16HOKDA fitted with:-

DS1 Castell Lock, 120V ac shunt trip, 10c Auxiliary Switches, 1111 Position

Switches = Z2D3J16HOKDA14022

Resulting Order Code = Z2D3J16HOKDA14022

D S 1

C astell

Fitted

D S 2

C astell

Fitted

D S 3

C astell

Fitted

C astell

Provision

Cylinder

Lock O ff

Padlock

O ffNone

None

N one 0101 0211 01121111 0202

7c SW 's 10c SW 's 4c SW 's+ 3c (m icroload) 7c S W 's+3c (m icroload)

NoneSpring C harge Indicator

Fitted

None Fitted

None Trip Indicator Sw itchFitted

1

0

0

None

0

Interlock M echanism

Type 1

1

0 1

0 1

0 1

Restricted G round FaultFitted


Type 2

2


Type 3

3

1 2 3 4 5

1 2 3 4

None240V

AC

220V

AC

200V

AC

120V

AC

110V

AC

100V

AC

440V

AC

380V

AC

415V

AC

0

0

1 2 3 4 5 6 7 8 9

24Vx2

D C

A

48Vx2

D C

B

2 3 4 5 6 7

U ndervoltage A larm - U V

Fitted2

Auxiliary Sw itche s

O rder C ode

O rder C ode

Locks

None240V

AC

220V

AC

200V

AC

120V

AC

110V

AC

100V

AC

0 1 2 3 4 5 6 7 8 9

24V

D C

48V

D C

125V

D C

u

100V

D C

v

110V

D C

D S 4

C astell

Fitted8

A

C astell

Fitted9

B

C astell

Fitted

2

Shunt Trip

O rder C ode

O rder C ode

U VT

O rder C ode

Position Sw itches

M echanical

Interlock

O rder C ode

Spring C harge Indicator or

U ndervoltage A larm - U V

O rder C ode

O rder C ode

Auto Spring

D ischarge D evice

O rder C ode

Trip Indicator Sw itch or Re stricted

G round F ault or Con tact Tem peratureM on itoring P hase R otation P rotection

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100Vx2

D C

C

240V AC

D elayed

D

220V AC

D elayed

E

200V AC

D elayed

F

120V A C

D elayed

G

110V A C

D elayed

H

100V AC

D elayed

J

440V AC

D elayed

K

415V A C

D elayed

L

380V AC

D elayed

M

w

200V

D C

x

220V

D C

y

30V

D C

C ontact Tem perature M onitoringFitted

3

Phase Rotation ProtectionFitted

4

AGR-21BL & 31BL only

AGR-31BL only

37

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Accessories Supplied LooseTest JumperThe test jumper is a plug-in type, and allows ON-OFF tests on all the Loadline ZFrame series ACBs with the breaker body drawn out from the draw-out cradle.

The standard jumper cable is 5 m long.

Catalogue numberZDTJC

Catalogue numberZDFB

Description Catalogue numberZ2 & Z3 Frames Z23DLIFTZ4 Frame Z4DLIFT

Breaker Fixing BoltsThe breaker fixing bolts hold the breaker body securely to the draw-outcradle in position. Use them if the ACB is subject to strong vibration.

LiftersA special lifter is available to allow easy and safe transportation orinstallation of the ACB. A drop prevention mechanism is standard.

w927

95

2300

GripWinchhandle

Loader

ACB

Section 3

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Catalogue number

ZDMID

Description Catalogue numberZ2 and Z3 frames Z23DSPDZ4 frame Z4DSPD

Description Catalogue numberCranked handle ZDHStowaway handle ZDHS

Mal-insertion preventionInterchangeability exists within the Loadline Z Frame series of ACBs.Because of this feature, there is a possibility for an ACB of a differentspecification being placed into the draw-out cradle. Using the mal-insertionprevention device eliminates such a possibility.

This device is capable of distinguishing nine different breaker bodies.

Shutter Padlocking DeviceThe main circuit safety shutters automatically conceal the main circuitcontacts on the draw-out cradle when the ACB is drawn out.

The top and bottom shutters operate independently and can be separatelypadlocked in the closed position.

Up to three padlocks (with 6 hasp) can be installed on each side usingpadlocking unit. (Padlock not supplied)

In the closed position, the shutters are locked to the extent that they cannotbe easily unlocked by hand. They can be unlocked and held open if requiredfor the purpose of inspection or maintenance.

Spare Draw-out HandleCranked handle for withdrawing moving chassis from fixed portion.Stowaway handle for withdrawing moving chassis can be stored withinmoving chassis.

Motor Step-down Transformer (external)The maximum rated control voltage applicable to the operation powersupply is AC240V. For higher voltages, a step-down transformer is needed.

The following step-down transformers are available as options. The 220V acmotor should be specified.

Rated control Transformer Cataloguevoltage Capacity Voltage ratio no.

AC410-470V 300VA 450/220V ZMT4522A

AC350-395V 300VA 380/220V ZMT3822A

39

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Capacitor Trip DeviceIn conjunction with the continuously-rated shunt trip device, the capacitor tripdevice can be used to trip the ACB within a limited period of 30 seconds if alarge voltage drop occurs due to an ac power failure or short-circuit.

When the continuously-rated shunt trip is used with a capacitor trip device, Acontact of auxiliary switch of ACB should be inserted into the series, otherwiseinternal damage may occur.

When ordering the capacitor trip device, a 48V dc shunt trip is required to beordered separately.

OCR CheckerThe OCR checker allows easy checking of the long time-delay trip, short time-delay trip, instantaneous trip, ground fault trip functions and the pretrip alarmfunction of the OCR in the field.

Rated voltage AC100-120VOperational voltage Rated Voltage X 70 to 110%Rated frequency 50/60HzRated voltage of shunt trip used DC48VPower consumption 100VACatalogue number ZSTCD

Power supply AC100-110V, 50/60HzorAC100-240V, 50/60Hz with type C plug

4 x AA alkaline cellsPower consumption 7VADimensions 101(w) x 195(h) x 44(d) mmWeight 400gCatalogue number Z0CRC

Control circuit Outline dimensions

Ratings and specifications

40

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ONOFF Cycle CounterThe ON-OFF cycle counter is a mechanical 5-digit readout that shows thenumber of ON-OFF cycles of the ACB.

Counter readings serve as a guide for maintenance or inspection.

Catalogue numberZCC

Catalogue numberZLPLTS

Mechanical Interlock CablesUsed in conjunction with Horizontal Interlocking Mechanism.

Lifting PlateLifting plates are detachable tools that can be used to lift a breaker body outof a draw-out cradle.

Length of Cable Z = (Cable length for pitch X) + Ymm

e.g. If X = 800mm and Y = 600mmCable Z = (1320mm) + 600mm = 1920mm cable length.

Mechanical Interlock Cables

Pitch X or Y Cable length Catalogueno.

500 or 600 1120mm (pair) ZMECHHC1120700 1220mm (pair) ZMECHHC1220

800 1320mm (pair) ZMECHHC1320



1100 or 1200 1620mm (pair) ZMECHHC1620

1720mm (pair) ZMECHHC1720






41

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Control Circuit Terminal CoverA control circuit terminal cover protects the terminal blocks for auxiliary switches,position switches and control circuits from being accidentally touched, thusenhancing safety.

Terminal BarrierAn inter-pole barrier prevents a possible short-circuit due to foreign objectsentering between the poles of the main circuit terminals or between the line andload ends, thus enhancing operational reliability of the ACB.

This barrier can be applied to the draw-out type ACB with vertical terminals orhorizontal terminals.

Catalogue numberZ2 frame 3-pole Z2D3CCTCZ3 frame 3-pole Z3D3CCTCZ4 frame 3-pole Z4D3CCTCZ2 frame 4-pole Z2D4CCTCZ3 frame 4-pole Z3D4CCTCZ4 frame 4-pole Z4D4CCTC

Catalogue numberZ2 frame 3-pole Z2D3TBZ3 frame 3-pole Z3D3TBZ4 frame 3-pole Z4D3TBZ2 frame 4-pole Z2D4TBZ3 frame 4-pole Z3D4TBZ4 frame 4-pole Z4D4TB

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IP CoverAn IP cover provides an IP55 grade of protection as defined in IEC 60529.

Even if the breaker body is on the ISOLATED position, IP cover can still be fittedon the ACB.

Catalogue numberZIP55

43

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Outline DimensionsZ2 Draw-out800A, 1250A, 1600A and 2000A standard series1250A, 1600A & 2000A high series

CP: ACB Front cover centre line

Terminal size t1 t2 t3 w

800A, STD 10 10 15 17.51250A, STD 10 10 15 17.51600A, STD 20 15 25 22.52000A, STD 20 15 25 1250A, HIGH 20 15 1600A, HIGH 20 15 2000A, HIGH 20 15

1 Conductors including connecting bolts should be separateda minimum of 7mm from Draw-out handle.

2 Panel cut should be 335mm not 339mm when the doorflange is not used. If IP55 door flange is used see page 43.

N represents the neutral-pole of four-pole ACBs.

For High fault series vertical terminal is standard andhorizontal terminal is optional and front connection isnot available.

Section 4

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Outline DimensionsZ2 Fixed800A, 1250A, 1600A and 2000A standard series


Terminal size t1 t2 t3 w

800A, STD 10 10 15 17.51250A, STD 10 10 15 17.51600A, STD 20 15 25 22.52000A, STD 20 15 25



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Outline DimensionsZ3 Draw-out2500A and 3200A standard series1600A, 2000A, 2500A and 3200A high series





For High fault series vertical terminal is standard andhorizontal terminal is optional, and front connection isnot available.

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Outline DimensionsZ3 Fixed2500A and 3200A standard series




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Outline DimensionsZ4 Draw-out4000A standard series





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Circuit diagram (with AGR-11BL OCR)

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Circuit Diagram (with AGR-21BL OCR)

31

40

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33

57

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Circuit Diagram (with AGR-31BL OCR)

31

40

58

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33

59

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Circuit Withstand voltage (at 50/60 Hz)

Main circuit Between terminals, AC3500V for 1 minute 12kVterminal group to earth

Auxiliary switches For general service Terminal group to earth AC2500V for 1 minute 6kV

For microload Terminal group to earth AC2000V for 1 minute 4kV

Position switches Terminal group to earth AC2000V for 1 minute 4kV

Over-current release (OCR) Terminal group to earth AC2000V for 1 minute 4kV

Power supply for under-voltage/ Terminal group to earth AC2500V for 1 minute 6kVreverse power trip function

Other accessories Terminal group to earth AC2000V for 1 minute 4kV

Controlcircuits

Rated impulse withstandvoltage Uimp

60

Technical Data and ApplicationsDielectric strength

Frame Z2 Z3 Z4

Rated current (A) 800 1250 1600 2000 2500 3200 4000

DC internal resistance per pole (m) 0.033 0.033 0.028 0.024 0.014 0.014 0.014

AC power consumption for 3-poles (W) 200 350 350 490 600 780 1060

Frame Z2 Z3 Z4

Standard series current rating 800/1250A 1600A 2000A 2500/3200A 4000AHigh series current rating 1600-2000A 1600-3200A

3P 4P 3P 4P 3P 4P 3P 4P 3P 4P

Draw-out body (Kg) 45 51 46 52 46 52 56 68 71 92

Draw-out chassis (Kg) 28 35 30 38 33 42 49 57 68 84

Total draw-out weight (Kg) 73 86 76 90 79 94 105 125 139 176

Fixed (Kg) 53 59 54 60 54 60 80 92

Frame Z2 Z3

Rated current (A) 1250 1600 2000 1600 2000 2500 3200

DC internal resistance per pole (m) 0.024 0.024 0.024 0.014 0.014 0.014 0.014

AC power consumption for 3-poles (W) 260 350 490 310 430 600 780

Note: The values shown above are those measured on phase connections andcannot be applied to control terminals on the ACB.

Note: The above weights are based on normal specifications with the OCR andstandard accessories.

Internal Resistance and Power Consumption

Standard series

Weight

High fault series

Section 5

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Frame Z2 Z3 Z4

Based Ambient Rated current 800 1250 1600 2000 2500 3200 4000standards temperature connecting 2x50x5t 2x80x5t 2x100x5t 3x100x5t 2x100x10t 3x100x10t 4x150x6t

(C) bar sizes

IEC60947-2 40 (Standard ambient 800 1250 1600 2000 2500 3200 4000EN 60947-2 temperature)

AS3947.2 45 800 1250 1600 2000 2500 3200 4000

50 800 1250 1600 2000 2500 3200 4000

55 800 1200 1540 1820 2500 2990 3940

60 800 1150 1460 1740 2400 2850 3760

NEMA,SG-3 40 (Standard ambient 800 1250 1540 2000 2500 3200 3700ANSI C37.13 temperature)

45 800 1190 1470 1960 2500 3010 3580

50 800 1130 1390 1860 2440 2860 3470

55 790 1070 1310 1750 2300 2690 3350

60 740 1000 1230 1640 2150 2520 3140

JIS C8372 40 (Standard ambient 800 1250 1600 2000 2500 3200 3700temperature)

45 800 1250 1600 1900 2500 2900 3580

50 800 1190 1540 1820 2500 2800 3470

55 800 1130 1460 1740 2400 2710 3350

60 800 1080 1390 1650 2280 2610 3230

Frame Z2 Z3

Based Ambient Rated current 1250 1600 2000 1600 2000 2500 3200standards temperature connecting 2x80x5t 2x100x5t 3x100x5t 2x100x5t 3x100x5t 2x100x10t 3x100x10t

(C) bar sizes

IEC60947-2 40 (Standard ambient 1250 1600 2000 1600 2000 2500 3200EN 60947-2 temperature)

AS3947.2 45 1250 1600 2000 1600 2000 2500 3200

50 1250 1600 2000 1600 2000 2500 3200

55 1250 1600 1820 1600 2000 2500 2990

60 1250 1550 1740 1600 2000 2400 2850

NEMA,SG-3 40 (Standard ambient 1600 2000 2500 3200ANSI C37.13 temperature)

45 1600 1960 2500 3010

50 1600 1860 2440 2860

55 1510 1750 2300 2690

60 1420 1640 2150 2520

JIS C8372 40 (Standard ambient 1250 1600 2000 1600 2000 2500 3200temperature)

45 1250 1600 1900 1600 2000 2500 2900

50 1250 1600 1820 1600 2000 2500 2800

55 1250 1550 1740 1600 2000 2400 2710

60 1250 1480 1650 1600 1900 2280 2610

Note: The values are applicable for both draw-out type and fixed type.The values for 800A, 1250A and 1600A are for horizontal terminals onboth line and load side.The values for 2000A, 2500A, 3200A and 4000A are for verticalterminals on both line and load side.Above figures are subject to the design of the enclosure and rating

of busbar.

Note: The values are for vertical terminals on both line and load side.Above figures are subject to the design of the enclosure and rating of busbar.

: Contact Tyco Electronics for details.

Derating

Standard series

*

* ****

****

*

***

* *

High fault series

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Application DataWhat Is Discrimination?

Discrimination, also called selectivity, is the coordination of protective devices suchthat a fault is cleared by the protective device installed immediately upstream ofthe fault and by that device alone.

Total discrimination

Discrimination is said to be total if the downstream circuit breaker opens and theupstream circuit breaker remains closed. This ensures maximum availability of

the system.

Partial discrimination

Discrimination is partial if the above condition is not fulfiled up to the prospectiveshort-circuit current, but to a lesser value, termed the selectivity limit current (Is).

Above this value both circuit breakers could open, resulting in loss of selectivity.

How To Read The Discrimination Tables

Boxes containing the letter T indicate total discrimination between the relevantupstream and downstream circuit breakers. Total discrimination applies for all faultlevels up to the breaking capacity of the upstream or the downstream circuitbreaker, whichever is the lesser.

For the other boxes, discrimination is either partial or there is no discrimination.

Worked ExamplesQ (1) A main switchboard requires a 1600A ACB feeding a 400A MCCB. The fault

level is 65kA. What combination of protective devices would provide totaldiscrimination?

A (1) A Loadline 1600A, Z2 ACB feeding a Loadline YA5J MCCB would providetotal discrimination up to 65kA. See page 63.

Note: Discrimination would be total whether the Loadline ACB had an integral orexternal protection relay because Icw (1s) = Ics. Most other ACBs haveIcw(1s) < Ics.

Recommendation for Busbars connection

The busbars to the ACB should be firmly supported near the ACB terminal. Faultcurrents flow through the busbars developing large electromagnetic forcebetween the busbars, and the support must be strong enough to withstand suchforces. The ACB should not be relied on as a single support.

Short-circuit current (kA) 30 50 65 80 100

D istance Z2 fram e 300 250 150 150

L (m m ) Z3 & Z4 fram e 350 300 250 150 150

The maximum distance of the connection point of ACB to the first busbar support

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Discrimination Table

Loadline Z Frame

Upstream: Loadline Z Frame ACB with or without Integral Protection Relay

Downstream: Loadline YA Frame MCCB

Frame 800A 1250A 1600A 2000A 2500A 3200A4000A

Model

Breaking capacity

125A YA2N 25kA T T T T T T T T T T T T T

YA2S 36kA T T T T T T T T T T T T T

YA2J 65kA T T T T T T T T T T T T T

160A/ YA3N 25kA T T T T T T T T T T T T T

250A YA3S 36kA T T T T T T T T T T T T T


YA3J-E 70kA T T T T T T T T T T T T T

400A/ YA5N 25kA T T T T T T T T T T T T T

360A YA5S 36kA T T T T T T T T T T T T T

YA5H 50kA T T T T T T T T T T T T T


YA5J-E 70kA T T T T T T T T T T T T T

800A Y6H 65kA T T T T T T T T T T T T T

Y6J-E 65kA T T T T T T T T T T T T T

Y6K 100kA T T T T T T T T T T T T T

Y6H-E 50kA T T T T T T T T T T T T T

Y7J-E 65kA T T T T T T T T T T T T T

Y8K-E 85kA T T T T T T T T T T T T T

800A

STDseries

&high

series

1250A

STDseries

&high

series

1600A

STDseries

&high

series

2000A

STDseries

&high

series

2500A

STDseries

&high

series

3200A

STDseries

&high

series

4000A

STDseries

65kA 80kA 80kA 80kA 80kA 85kA 85kA100kA 100kA 100kA65kA 65kA 65kA

Note: 1. All ACBs have Ii set at NON, MCR ON.2. Assuming ACB time settings are greater than MCCB.3. The above table is in accordance with IEC 60947-2, Annex A4. External relay can be used - Contact Tyco Electronics for further details.5. All values shown at 400V ac.

T = Total selectivity

DownstreamM

CCB

Upstream ACB

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Discrimination with T type fuses

The following table should be used as a guide when selecting Dorman SmithLoadline Z Frame Air Circuit Breakers and fuses (BS88/IEC269) which areimmediately downstream from a transformer.

In and Ir are set to the full rated current of the transformer and tr, Isd and tsd areat standard transformer settings.

Listed are the maximum fuse ratings that can be used when downstream from agiven ACB at these settings.

Also included are the maximum fuse ratings that can be used downstream when tr,Isd and tsd are at their maximum settings.

All information listed is based on a transformer secondary voltage of 415V.

Transformer kVA 500 630 750 800 1000 1250 1600 2000F.L.C. (A) 696 876 1043 1113 1391 1739 2226 2782

Loadline Z Frame Frame Z2 Z2 Z2 Z2 Z2 Z2 Z3 Z3(standard series) C.T. (A) 800 1250 1250 1250 1600 2000 2500 3200

In 1 0.8 1 1 1 1 1 1IR 0.9 0.9 0.85 0.9 0.9 0.9 0.9 0.9

tR (sec) 20 20 20 20 20 20 20 20Isd 6 6 6 6 6 6 6 6

tsd (mcec) 400 400 400 400 400 400 400 400Max. fuse rating withstandard ACB settings (Amps)*Max. fuse rating withmaximum ACB settings (Amps)

355 400 500 500 500 630 800 1000

450 500 670 710 800 1000 1250 1250**

Settings(AGR-L)

> The above In settings are based on 100% of Rated Current (Ict).

> Table Reference : Ir - Long Time Delay Pickup Current, tr - Long Time Delay Time Setting, Isd - Short TimeDelay Pickup Current, tsd - Short Time Delay Time Setting.

Notes:

* It is possible to increase the maximum fuse rating by utilising the rampfacility on the Loadline Z Frame Protection Relay (AGR).

** Information on fuses above 1250A rating was not available.

*** Al

07_09_ACB Z Frame

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