1

1

1

REPLACEMENT OF SPARES

It is recommended that all the available spare parts be stocked

For two ACBs when 10 or less are in use;For three ACBs when 11 to 20 are in use;For four ACBs when 21 or more are in use;

1. Please refer spare parts manual for ordering spares

2. RELEASE REPLACEMENT OF SPARES COMMON FOR

ALL ACBs

2.1. THERMOMAGNETIC TYPE DN1

Remove the front facia (follow the procedure given on page no.10-11) Refer to Fig. 11-1. In open condition if the breaker :

2.2 SOLID STATE OVERCURRENT RELEASE TYPE SR21i:

2.3 VOLTMETRIC RELEASES :

Refer to Fig 11-3.

11-1

fig. 11-1

fig. 11-2

fig. 11-3

Disconnect the wires from terminals (1) & (5) – as applicable – and disconnect connecting piece (6) from Trip rod (3) by removing pin (7). Remove screws (8). Remove the release and disconnect connecting piece(6) from it. To refit, proceed in reverse order. Grease the connecting pins. Make the connections as per the wiring diagram given on the cover of the release. Refer to section 7 for adjustment and inspection.

Remove the front facia as per the procedure given on page no.10-11. Remove the top cover. Refer the Fig. 11-2. Disconnect the 9-pin female connector(s) (1) by pressing the top & bottom flanges (2) and pulling the connector(s) away from the release. Remove screw(3) fixing the acket to the release. Remove three nos. of screw(4). Remove the release. To refit, proceed in reverse order. Refer to section 10 for adjustment and inspection.

In open condition of the breaker. Disconnect the wires from terminals(11). Disconnect the rod (15) from trip rod (13) by removing pin (16). Unscrew nuts (12). Remove the support and release assembly, lossen screws(17) the release from its support and disconnect rod (15).

To refit proceed in reverse order.

Grease the connecting pins. Refer to section 10 for adjustment and inspection.

The above will meet operating requirements for 2-3 years under normal working conditions. Replacement of the recommended spares is to be carried out satisfactorily in accordance with the given instructions.

SR21i

1

1

1

2.4 AUXILIARY CONTACT BLOCK:

(For both 2N/O + 2N/C & 6N/O + 6N/C) Disconnect the connections. Lossen the screws and remove the auxiliary contact block. To refit, proceed in reverse order, make sure rotary switch link is placed properly Make the connections as per the wiring diagram shown in Section 13 and the ferrules attached.

2.5 MOVING SECONDARY ISOLATING CONTACT BLOCK :

Disconnect the wires.

Remove screws(1).

To refit proceed in reverse order. Make the connections as per the wiring diagram shown in Section 13.

2.6 FIXED SECONDARY ISOLATING CONTACT BLOCK:

Remove wire cover by unscrewing screws(1).

Disconnect the wires.

To refit, proceed in reverse order.

Make the connections as per the wiring diagram shown in Section 13.

3 CN-CS 3200, CN-CS 1600D, CN-CS 3200H0/H1 & CN-CS 4000 H0/H

3.1 ARC CHUTE :Press latching lever (1) and rotate it. Remove the arc chute by pulling it upwards.

To refit, place the arc chute over the arcing horns(2) and rotate the latch for locking.

. REPLACEMENT OF SPARES FOR CN-CS 630C TO

11-2

Fig. 11-4

Fig. 11-5

Fig. 11-6

Fig. 11-7

1

1

1

3.2 ARCING CONTACTS

3.2.1 FIXED ARCING CONTACT :

3.2.2 MOVING ARCING CONTACTS :

11-3

Fig. 11-8

Replacement of fixed arcing contacts is to be done in OPEN condition of the breaker. Loosen the screws(1) and slide the arcing contacts forward. To refit, proceed in reverse order.

Replacement of moving arcing contacts is to be done in CLOSED condition of the breaker. Loosen the screws (2) by about 1.5 mm to disengage locating boss(E) and then pu l l upwards. To refit, proceed in reverse order.

NOTE : Spare kits accompany detailed instructions on HOW

TO CONNECT & TEST a particular accessory.

1

1

1

OVERALL DIMENSIONS

DIMENSIONAL DETAILS FOR FIXED BREAKERS

For 630A to 3200A 3P/4P C/H

RatingsCN-CS

Dimensions(mm)

A D E F

630/800/1000A C/H 3P

1250/1600A C/H 3P

630/800/1000A C/H 4P

C/H 4P1250/1600A

2000/2500A C/H 3P

2000/2500A

3200A C/H 3P

C/H 4P

3200A C 4P

326 57 102

414

482

628

56

83

82

98

154

150

98

156

-

-

630/800/1000/1250/1600 C/H

2000/2500/3200 C/H

Terminal Connections

Note : All Dimensions are in mm.

12-1

1(2

)

61

10

4

39

0

34

9 61

6 MIN3

26

A 6 mi .3 n

2 4685 26

DD E F E

Terminal for 630/800/1000C/H Terminal for 1250/1600/ 2000/2500/3200 C/H, 3200 H1/4000H

50

3

FOR METALLIC COMPONENTS

356 min.

FOR INSULATING SHEET16 max.

DOOR

BEZEL

27

10

0 m

in.

200

min

.71

25

22

33

27 20

230

444

EARTHING TERMINAL

2 HOLES - O6.3

2.6

140min.

85

54

10

68

.82

58

200

min

.

27

TO REMOVE ARC CHUTE

22

7

10

14

5

10

23.5

15

15 23.5

22

7

14

0

1

1

1

DIMENSIONAL DETAILS FOR FIXED BREAKERS

For 3200D/4000A C 3P/4P

Terminal for 4000C

Terminal Connections

For 3200D/4000C

Bezel Fixing Plan for all Fixed Breakers

Note :A = 89 for 4000CA = 91 for otherfixed ACBs Door Cutout

Door Drilling forBezel Fixing Plan Bezel

12-2

RatingsCN-CS

Dimensions (mm)

A B D E F

3200D/4000A C 3P

3200D/4000A C 4P

628 636 112 202 -

830 838 112 202 202

Note : All Dimensions are in mm

1

1

1

DIMENSIONAL DETAILS FOR DRAW-OUT BREAKERS

For 640A to 3200A C/H 3P/4P, 3200H1/4000H 3P, 630A to 3200A S1 3P/4P

*Terminal For 630/800/1000 C/H/S1, 1250/2500S1 & 2000C/H

*Terminal for 3200H1/4000H

*Terminal forfor 3200C/H/S1

*Terminal for1250/1600/2500 C/H & 1600/200S1

12-3

7DOOR

BEZEL

25

66

8.8

(10) 54

Dimensions (mm)RatingsCN-CS A D E F

630/800/1000A C/H/S1 2000A S1

1250/1600A C/H/S1

630/800/1000A C/H/S1 2000A S1

1250/1600A C/H/S1

2000/2500A C/H2500A S1

3200A C/H/S1

2000/2500A C/H2500A S1

3200A C/H/S1

3200A H0/ H1

3200A H0/ H1

4000A H0/ H

4000A H0/ H

399

487

555

701

701

909

97.5

96.5

123.5

122.5

148.5

102

98

154

150

202

-

98

-

156

-

Note : All Dimensions are in mm.

151.5 202 202

3P

3P

4P

4P

3P

3P

4P

4P

3P

3P

4P

4P

1

1

1

DIMENSIONAL DETAILS FOR DRAW-OUT BREAKERS

Note : All Dimensions are in mm.

Flat Terminal Connections

630-1000C, 630-1250S1 800-1000H, 1250-1600 C/H 2000S1 2000 C

2000H, 2500 C/H 3200 C/H/S1 3200 H1/4000 H

For 3200D/4000C 3P/4P, 5000C/6300C 3P/4P

28

17.5

40 50 40 43.5

63

217

8 holes Ø 14

Terminal Connections

4000C

5000C / 6300C

12-4

3200D/4000C

36

8

54

25

6

15

5

100

30 30

20

6 SLOTS

8.5x9.5

10.2

8.5

58

.4

38 38 62

2500 S1

RatingsCN-CS

Dimensions (mm)

A D E

3200D/4000C 3P

3200D/4000C 4P

5000C/6300C 3P

5000C/6300C 4P

711 155.5 200

913 156.5 200

913

1182 269

187.5

187.5

269

1

1

1

DIMENSIONAL DETAILS FOR DRAW-OUT BREAKERSMounting Details :- For Horizontal Mounting of all Draw-out Breakers

Bezel Fixing Plan for all Draw-out Breakers

Door Cutout Door Drilling forBezel Fixing Plan

Bezel

For 4000A C 3P/4P, 5000C/6300C 3P For 630A to 3200A C/H 3P/4P, 3200 H1/4000 H 3P

Note : For 4000A C 3P/4P, 5000C/6300C 3P ACB, A=81.5 For other Drawout Breakers A=79.5

/4P

12-5

Type G(mm)

800 to 1600 C/H 3P

630 to 2000S1 3P

800 to 1600 C/H 4P

630 to 2000S1 4P

2000/2500 C/H 3P

2500/3200S1 3P

2000/2500 C/H 4P

2500/3200S1 4P

3200H0/H1 3P

3200H0/H1 4P

4000H0/H 3P

4000H0/H 4P

5000C/6300C 3P

5000C/6300C 4P

280.3

280.3

368.3

368.3

436.3

436.3

582.3

582.3

582.3

790.3

582.3

790.3

863

1132

Note : All Dimensions are in mm

1

1

1

OTHER TERMINAL ORIENTATIONS FOR DRAW-OUT ACBsHORIZONTAL STRAIGHT TERMINALS

REAR SIDE

Note : Please consult us for vertical & front terminal orientations.

REAR SIDE

12-6

640/800/1000C 1250/1600C 2000C

10

2500H, 2500C/H 3200/4000C & 3200S1

2500H, 2500 C/H 3200 C/S1 - LEFT SIDE VIEW

1

1

1

REPRESENTATIVE TERMINATION ARRANGEMENT

For 3-Pole breaker

12-7

1

1

1

REPRESENTATIVE TERMINATION ARRANGEMENT

For 4-Pole breaker

Typical cable termination

Note :In 4-Pole ACBs, neutral pole is fully rated.Hence the poles at either extreme can be used as the neutral.

12-8

Note :Factory gives NRYB configuration whenviewed from the front of the ACB as standard.

1

1

1

WIRING DIAGRAMS

FOR ELECTRICALLY OPERATED ACBS

AC CONTROL SUPPLY

DC CONTROL SUPPLY

E,B,D,C,A : SIC Termination. A,B,C,D & E are 3,40,41,42 SICs used for internal wiring in electrically operated ACBs.

N,H,4 : Internal Termination points...... : Wiring to be done by the Customer : Internal Wiring

EE : ‘Closing’ electromagnet

M : Motor

C6 : Service Position Microswitch for Withdrawable Circuit Breaker (shown in ‘Test’ Position)

C11 : Limit Switch (Operates when closing electromagnet is held ON)

R : Economy resistor

FCA : Limit Switch (Shown in Spring Charged Condition)CA : Auxiliary Contacts (Shown in Breaker Open Position)

NOTE :*CA1 N.O. Contacts 3 & 4 not available for auxiliary use, if shunt release type EA/EA1 is used**SIC-A

Programmed to complete the circuit only in ‘Test’ position. This enables carrying out operations of breakers by bypassing the electrical interlocks which are active in ‘Service’ position.Max 24 SICs available on ACB (For control, accessories and auxiliary circuits)

SERVICETEST

13-1

1

1

1

SIGNALLING

SPRING CHARGE INDICATION(FOR ELECTRICAL ACBs)

SIGNALLING FOR VOLTMETRIC RELEASES

SHUNT RELEASE

BREAKER ON-OFF INDICATION

UNDER VOLTAGE RELEASE

POSITION INDICATIONISOLATED / TEST POSITION

SERVICE POSITION

SERVICE, TEST, ISOLATED POSITION

INDICATING LAMPS

L4-for Under Voltage TripL5-for ‘Shunt’ TripL6-for ‘Isolated’ and/or ‘Test Position’L7-for ‘Service Position’L8-for ‘Spring Discharged’L9-for ‘Spring Charged’L10-for ’Breaker On’L11-for ‘Breaker Off’L12-for ‘Test’ PositionB5,B6,B7,B8 - ContactorsBPED - ‘Signal Cancelling’ Push Button

SIGNALLING SWITCHES

C3-for ‘Under Voltage’ TripC5-for ‘Shunt’ TripC6-for ‘Service’ Position (Left)C7-for ‘Service’ Position (Right)C8-for ‘Isolated/Test’ Position (Left)C9-for ‘Isolated/Test Position (Right)C12-for ‘Earthfault’ Trip

Note : Wiring shown inside dotted lines is internally wired in ACB

13-2

L6/12 C8 OR C9

L7 C6 OR C7

L 7

L 12

L 6

C 8 OR C 9C 6 OR C 7

1

1

1

SIGNALLING FOR OVERLOAD AND SHORT - CIRCUIT TRIPPING

Manual Reset

The cancelling of the fault signal is effected by pressing the local trip button, which also resets the overcurrent release.

Auto Reset

Cancelling of fault signalling is provided by push button BPED. The presence of the fault signal does not prevent closing of the circuit breaker.

Common SignallingCommon Signalling

Separate Signalling

Signalling Switches

C1-for ‘Overload and Short Circuit’ TripC2-for ‘Short Circuit’ Trip

INDICATING LAMPS

L1-Common for ‘Overload and short Circuit’ TripL2-for ‘Overload’ TripL3-for ‘Short Circuit’ TripB1, B2, B3, B4 - ContactorsBPED - ‘Signal Cancelling’ Push button–( O–– SIC terminals

Note : Wiring shown inside dotted lines is internally wired in ACB

13-3

B2

52

L1

51

C1 50

BPED

L152

51

C1

50

L3

BPED L2

B355

C2

52

C1 50

51

B454

Separate Signalling

50

52

51

55

C1

C2

L2

L3

B1

54

1

1

1

13-4

Breaker Ratingin Amps.

Window Size for Neutral CT

AxB

630 / 800 /1000 C/S1

1250/1600 C/S1& 2000S1

2000C & 2500/3200 C/S1

4000C / 3200D

5000C / 6300C

11 x 52

16 x 52

16 x 102

25 x 144

25 x 220

SR21i CT CONNECTOR

N R Y B

81

S1 S1 S1 S1

S2 S2 S2S2

82

N R Y B

1 2

3 4

5 6

7 8

9 10

For Earth Fault Protection with SR21i / SR18G ReleaseNote: 1) Wining Diagram shown is for 3Pole ACBs. 2) For 4 Pole ACBs, Neutral CT may be mounted on Neutral Pole inside the Breaker and therefore Terminal No. 81 (& 82 for SR21i Release) may not be required in such cases.

A ±

1

B ± 1

13-5

TECHNICAL DATA

14-1

Rating (A)

Type Designation

0 Rated current (A) at 40 c

Rated operational voltage (V), 50/60Hz

Rated insulation voltage (V), 50/60Hz

No. of poles

Rated ultimate short circuit breaking

capacity 50/60Hz (kA rms)

Rated service short circuit breaking

capacity 50/60Hz (kA rms)

Rated short time

withstand capacity

50/60Hz (kA rms)

Rated making capacity

50/60Hz (kA peak)

Rated impulse withstand voltage

of main circuit (kV)

Rated impulse withstand voltage

of aux. circuit (kV)

Typical opening time (ms)

Typical closing time (ms)

Utilization category

Suitability for isolation

Fixed

Draw out

Manual

Electrical

Electrical & Mechanical life (operating cycles)

Electrical life without maintenance

400

E

400

415

1000

3

50

-

50

-

50

42

-

105

-

8

4

380/415/500V

660/690V

380/415/500V

660/690V

0.5 sec

1 sec

3 sec

380/415/500V

660/690V

40

60

B

15000

6000

Fixed

Draw out

Dimensions H

W

D

3 Pole

4 Ploe

H

W

D

3 Pole

4 Ploe

385

316

-

423.5

-

-

-

-

3

50

-

50

-

50

42

-

105

-

3/4

50

-

50

-

50

42

-

105

-

630

415

1000

E S1 E S1 C H

800

415

1000

630 800 1000

E S1 C H

1000

415

1000

3

50

-

50

-

50

42

-

105

-

3/4

50

35

50

35

50

50

35

105

73.5

50

-

50

-

50

42

-

105

-

65

50

65

50

65

65

50

143

105

3

50

-

50

-

50

42

-

105

-

3/4

50

35

50

35

50

50

35

105

73.5

50

-

50

-

50

42

-

105

-

65

50

65

50

65

65

50

143

105

8

4

12

4

8

4

12

4

12

4

12

4

8

4

12

4

12

4

12

4

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

15000

6000

15000

6000

15000

6000

6000

6000

8000

8000

20000

6000

8000

8000

20000

385

316

-

423.5

-

-

-

-

385

316

-

423.5

385

316

-

423.5

-

-

-

-

-

-

-

-

394

326

414

431

394

326

414

431

-

-

-

-

468

399

487

587

-

-

-

-

468

399

487

587

468

399

487

587

-

-

-

-

1

1

1

* Please consult us for applications at dc voltages & higher operational voltages upto 1000V ac.** Electrical life = Mechanical life, however arcing contacts need to be replaced depending upon wear. Arcing contacts are readily available as spares & easily replaceable at site.

TECHNICAL DATA

14-2

8

4

40

60

B

6000

385

316

-

423.5

-

-

-

-

3

50

-

50

-

50

42

-

105

-

E

1

1

1

65

50

65

50

65

65

50

143

105

50

35

50

35

50

50

35

105

73.5

H

12

4

12

4

40

60

B

40

60

B

20000

7000

7000

394

326

414

431

468

399

487

587

1250

1250

415

1000

E

3

50

-

50

-

50

42

-

105

-

8

4

40

60

B

6000

385

316

-

423.5

-

-

-

-

3

50

-

50

-

50

42

-

105

-

C H H

1600

415

1000

E S1 C

2000

415

1000

65

50

65

50

65

65

50

143

105

50

35

50

35

50

50

35

105

73.5

50

-

50

-

50

42

-

105

-

3/4

55

40

55

40

55

55

50

121

84

75

65

75

65

75

75

65

165

143

12

4

12

4

8

4

12

4

12

4

12

4

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

4500

7000

4500

20000

5000

5000

20000

-

-

-

-

468

555

701

587

1600 2000

3/4

7000

394

326

414

431

468

399

487

587

385

316

-

423.5

-

-

-

-

468

399

487

587

394

482

628

431

C

60

40

60

40

60

60

55

132

84

12

4

40

60

B

5000

2500

H

2500

415

1000

3/4

75

65

75

65

75

75

65

165

143

12

4

40

60

B

5000

20000

468

555

701

587

394

482

628

431

3200 4000 5000 6300

H0 H1 H0 H C C

3200

415

1000

3/4

4000

415

1000

3/4

5000

415

1000

3/4

6300

415

1000

3/4

75

65

75

65

75

75

70

165

143

100

85

100

85

100

100

85

220

187

75

65

75

65

75

75

70

165

143

100

85

100

85

100

100

85

220

187

95

95

95

95

209

95

95

95

95

209

12

4

12

4

12

4

12

4

12

4

12

4

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

40

60

B

10000

5000

5000

468

701

909

587

10000

5000

5000

468

701

909

587

5000

2500

583

913

1182

691

-

-

-

-

-

-

-

-

5000

2500

583

913

1182

691

3/4

CS1

12

4

40

60

B

6000

-

-

-

-

50

-

50

-

50

42

-

105

-

S1

12

4

40

60

B

6000

-

-

-

-

50

-

50

-

50

42

-

105

-

S1

12

4

40

60

B

4500

-

-

-

-

60

-

60

-

60

55

-

132

-

S1

12

4

40

60

B

4500

-

-

-

-

60

-

60

-

60

60

-

132

-

468

555

701

587

1

1

1

SPECIAL APPLICATIONS

15-1

11.1. 690V Application of C-POWER ACBs11.1 1.C-Power breakers are also suitable for operation at 690V with following changes / precautions.

a) Arc chute suitable for 690V to be usedb) Characteristics such as rated service Short circuit breaking capacity and rated ultimate short circuit breaking capacity are as specified on label.c) Only top terminals (marked line) of breaker are to be connected to the incoming side of supply.

11.1.1.1 The label indicating suitability of the breaker at 690V with special arc chutes is put on the facia of the breaker.

The label indicating characteristics is put just below the nameplate on the side of the breaker.

The label identifying ‘Line’ terminal is put above the top terminal on the rear side of the breaker in fixed ACBs and on the rear side of the cradle in draw out ACBs.