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vacuum circuit breakeroutdoor type zw10-12/630-25 vacuum circuit breaker
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zw10-12 outdoor high voltage vacuum circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with rated voltage of 12kv and three-phase ac 50hz. it is mainly used in power distribution systems such as rural power network, urban power network, railway, mine and port, especially for outdoor overhead lines.    


1. ambient temperature: not higher than 40 ºc, not less than -15 ºc (at -30  ºc to allow storage and transportation).
2. altitude: not exceed 2000m. (if the altitude needs to be increased, the rated insulation level shall be increased accordingly).
3. earthquake intensity: not more than 8 degree.
4. the daily average value of air relative humidity shall not be greater than 95%, and the monthly average value shall not be greater than 90%;

5. no fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration


.

                                    item

  unit

                                 data

1

rated voltage

kv

12

2

rated current

a

630/1250

3

rated frequency

hz

50/60

4

rated short circuit breaking current

ka

12.5/25

5

rated peak withstand current(peak)

ka

31.5/50

6

rated short time withstand current(4s

ka

12.5/25

7

rated short circuit making current(peak

ka

31.5/50

8

rated short circuit breaking current breaking times

times

30

9

mechanical life

times

10000

10

high-voltage test with working frequency1min)

kv

42

11

lightning impulse withstand voltage(peak

kv

75

12

secondary loop 1 min power frequency withstand voltage

kv

2

13

net weight

kg

150

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