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vacuum circuit breakerzw32-12jl series outdoor high voltage vacuum prepaid circuit breaker
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zw32-12lj prepaid integrated circuit breaker on outdoor column is outdoor power distribution equipment with rated voltage 12kv and three-phase ac 50hz. it is mainly used to open and close the load current, overload current and short circuit current of high voltage metering users, and has metering and prepayment functions at the same time. suitable for urban and rural end users for protection and control purposes.

zw32-12jl /630 prepaid circuit breaker rated current 630a(can also be produced according to customer requirements), rated short-circuit breaking current 25ka, with the controller can cut off the normal load current, at the same time as transformer backup protection can cut off the short-circuit current.

  in order to meet the needs of modern electricity management, the problem of arrears of users and line loss can be solved by means of science and technology. our company developed a new set of 10kv high voltage prepaid metering device. this device is suitable for high voltage metering users between each transformer capacity grade, using the device can achieve a variety of relay protection, and has the characteristics of high accuracy, stable operation, low cost.

1. ambient temperature: no higher than 40℃, no less than -40℃, 24 hours average temperature difference does not exceed 35℃.

2. the relative humidity of the atmosphere does not exceed 50% when the ambient air temperature is 40℃, and it can have higher humidity at a lower temperature; when the average minimum temperature of the wettest month is 25℃, the average maximum relative humidity is 90%.

3. pollution level is level 3.

4. the altitude does not exceed 1000mm.

5. there is no strong vibration and impact, no corrosive metal and harmful gas damaging insulation, no serious dust, no conductive particles and dangerous explosive substances.

no.

item

unit

parameter

1

rated voltage

kv

12

2

rated current

a

630

3

rated frequency

hz

50

4

power frequency withstand voltage 1min(wet)(dry) interphase, ground/fracture

kv

48/42

5

lightning shock withstand current(peak) interphase, ground/fracture

kv

75

6

rated short-circuit breaking current

ka

25

7

rated short circuit closing current(peak)

ka

50

8

rated peak tolerance current

ka

50

9

4s short-time withstand current

ka

25

10

rated operating cycle

o-0.3s-co-180s-co

11

rated short-circuit current times of breaking

times

30

12

mechanical life 

times

10000

13

secondary loop 1min power frequency withstand voltage

kv

2

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