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24KV indoor vacuum circuit breaker

Mainly Technical Parameters

 

 

 

 

NO

Item

Units

parameters

1

Rated voltage

KV

24

2

Rated Frequency

HZ

50

3

Rated Lightning Impulse voltage tolerance(peak)

KV

125(145 Fractures)

4

Rated short-time power-frequency voltage tolerance(1min)

KV

65( 79 Fractures)

5

Rated current

A

630.1250

630.1250

1600.2000.

2500.3150

6

rated short-circuit breaking current

KA

20

25

31.5

7

rated short-circuit closing current (peak)

KA

50

63

80

8

rated short-circuit duration time

S

4

9

Rated operating sequence

 

0-0.3s-CO-180s-CO

10

Rated a single / back-to-back electric current breaking device group

A

630/400

11

Rated short-circuit breaking current breaking number

times

30

12

Closing time

ms

35-70

13

Opening time

Times

20-50

14

Mechanical life

V

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