Outdoor Vacuum Circuit Breaker

ZW32-12 type outdoor VCB

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ZW32-12 type outdoor VCB

General

ZW32-12 Series outdoor high voltage vacuum circuit breaker is rated voltage 12kV, three phase AC 50Hz outdoor distribution equipment. It is mainly used to breaking closing power system load current, overload current and short-circuit current. Applicable to substations and power distribution in industrial and mining enterprises for protection and control purposes, and frequent operation place for rural power.

The circuit breaker small size, light weight, anti-condensation, maintenance and so on. Adapt to adverse weather conditions, and to teach filthy environment.

 

Service environment

a) Air temperature: Maximum temperature: +85℃; Minimum temperature:-45℃

b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .

c) Altitude above sea level: Maximum installation altitude:2500mor more higher.

d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.

e) No frequent violent shake

Technical data

No. Item Unit Parameters
1 rated voltage kV 12
2 rated frequency Hz 50
3 rated current A 630/1250
4 rated short-circuit breaking current kA 20/25
5 rated peak value withstand current(peak) kA 50/63
6 rated short time withstand current kA 20/25
7 rated short-circuit closing current (peak) kA 50/63
8 mechanical life Times 10000
9 rated short-circuit breaking current breaking number Times 30
10 power frequency withstand voltages(wet) (dry) inter-phase ,earth, fracture kV 42/48
11 Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture kV 75/85
12 Secondary circuit 1min power frequency voltages kV 2
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