ZW8-12 Outdoor High Voltage Vacuum Circuit Breaker

No.

Item

Unit

Data

6.3 kA

12.5kA

20kA

1

 Rated voltage

kV

12

2

 Maximum

kV

12

3

 Rated current

A

630

4

 Rated short circuit load dropout current

kA

6.3

12.5

20

5

 Rated short-circuit making current

kA

16

31.5

50

6

 Rated peak withstand current

kA

16

31.5

50

7

 Rated short time 1 min tolerance current

kA

6.3

12.5

20

8

 Rated insulation level

 High-voltage test with working frequency

kV

42

 Lightning shock pressure

75

9

 Rated operating sequence

Prat-0.3S- Joints-180S-Joint points

10

 Institution life

time

10000

11

 Rated short open circuit current switch frequency

time

30

12

 Operating mechanism rated switching voltage

V

110,220

13

 Operating mechanism rated points brake current

V

110,220

14

 Contact clearance

mm

11±1

15

 Super stroke(contact spring compression length)

mm

3

16

 Three phase points, closing not synchronism

ms

≤2

17

 Contact switching bounce time

ms

≤2

18

 Average opening speed

m/s

1.0±0.2

19

 Average closing speed

m/s

0.7±0.15

20

 Opening time

  The highest operating voltage

s

0.015-0.05

  The minimum operating voltage

0.03-0.06

21

 Closing time

s

0.025-0.05

22

 Each phase main loop resistance

μΩ

≤120（≤200）

23

 Action contact allowed to wear accumulative thickness

mm

3