12kv Rated Voltage VMD2 Indoor Vacuum gas Circuit Breakers 4000 / 2500 / 2000 / 1600A

NO

Item

Unit

Technical Date

1

Rated voltage 

kV

12

2

Rated insulating level

Rated short time power 

frequency withstand voltage

(1min)          

42

Raed lighting inpulse

 withstand voltage 

(peak value)              

75

3

Rated Frequency

Hz

50

4

Rated current 

A

630

630

1250

1250

1250

1250

1600

1600

2000

2000

2500

2500

3150

3150

4000

4000

5

Rated short circuit

 breaking current        

kA

20

25

31.5

40

6

Rated short time withstand current           

20

25

31.5

40

7

Rated peak withstand current  

50

63

80

100

8

Rated short-circuit 

closing current (peak value)

50

63

80

100

9

4S rated short-time 

withstand current  4s 

20

25

31.5

40

10

Rated shock steady current 

50

63

80

100

11

Rated making surge current of 

capacitor bank

12.5(The frequency is 

less than 1000Hz)

12