12KV 20KA Indoor HV Circuit Breaker 630A 1250A AC Insulated Metal Clad Switchgear

 Technical specifications

No.

Item

Unit

Data

1

Rated voltage

kV

12

2

Rated frequency

Hz

50

3

Rated lighting impulse withstand voltage (peak)

kV

75

4

Rated short time withstand voltage (1 min)

kV

42

5

Rated short time breaking current

kA

20

25

31.5

6

Rated current

A

630
1250

630
1250

630
1250
1600

7

Rated short time withstand current (virtual value)

kA

20

25

31.5

8

Rated peak withstand current (peak)

kA

50

63

80

9

Rated short-circuit closing current (peak)

kA

50

63

80

10

Rated short-circuit current duration

s

4

11

Rated short-circuit current breaking time

times

50 (for 40KA is 30)

12

Mechanism life

times

2000

13

Secondary circuit power frequency withstand voltage (1 min)

V

2000

14

Rated operation order

O-0.3S-CO-180S-CO

15

Rated unit/back-to-back capacitor bank breaking current

A

630/400

16

Rated capacitor bank closing inrush current

KA

12.5(frequency is not higher than 1000HZ)

17

Contact opening distance

mm

11±0.1

18

Contact supper travel

mm

3.5±0.5

19

Contact closing tripping time

ms

≤2

20

Three-phase breaking /closing non-synchronism

ms

≤2

21

Average switch-off speed

m/s

1±0.2

22

Average switch-on speed

m/s

0.6 +0.2
-0.1

23

Switch-off (rated voltage)

ms

20~60

24

Switch-on (rated voltage0

ms

30~70

25

Rated switch-on/off operating voltage

V

AC110/220,DC110/220

26

Energy storage motor rated voltage

V

AC110/220,DC110/220

27

Motor rated rate of work

W

70 (40KA 100W)

28

Energy storing time

s

≤15

29

Contact erosion limit

mm

3

30

Break-brake rebound amplitude

mm

≤3

31

Main conducting loop resistance

μΩ

≤45

32

Contact switch-on pressure

20KA

(2000±200)N

25KA

(2400±200)N

31.5KA

(3100±200)N

1, the circuit breaker adopts solid insulation sealing method, meet the requirements of normal operation under the condition of the insulation, and effectively reduced the volume of circuit breaker, the overall layout is reasonable, beautiful, concise;
 
2, operation mechanism, USES the spring mechanism that is designed for this new type of circuit breaker, the output curves to the demands of the arcing chamber cooperate good, its performance is more suitable for the characteristics and requirement of 12 kV vacuum circuit breaker, has the very high reliability, long service life, convenient maintenance, free maintenance;
 
3, circuit breaker handcart can easily move in the switch cabinet, the handcart stroke range is accurate and reliable; Supporting force machinery artesian, satisfies the requirement of switchgear "five prevention" function;
 
4, with long service life, convenient maintenance, no pollution, no explosion danger, and low noise, apply to is quite harsh operating conditions of the workplace.

 Competitive Advantage:

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