ZW32-12 Series outdoor high voltage vacuum circuit breaker is rated voltage 12kV, three phase AC 50Hz outdoor distribution equipment .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.
2. 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
3. Mainly Technical parameters
rated short-circuit breaking current
rated peak value withstand current(peak)
rated short time withstand current
rated short-circuit closing current (peak)
rated short-circuit breaking current breaking number
power frequency withstand voltages(wet) (dry) inter-phase ,earth, fracture
Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture
Secondary circuit 1min power frequency voltages