ZW7-40.5 Outdoor Vacuum Circuit Breaker

General ZW7-40.5 Series outdoor high voltage vacuum circuit breaker is rated at 40.5 kV, three-phase AC, 50 Hz, for outdoor distribution equipment. Mainly used for breaking, closing power systems, 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 places for rural power grids.

Outdoor Vacuum Circuit Breaker Service environment conditions:

a) Ambient Air Temperature:  +45ºC ~ -45ºC

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

c) Altitude above sea level (Maximum installation altitude): not more than 2500 meters.

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

e) The wind speed is not greater than 35m/s.

f ) Anti-contamination level for grade IV

g) The earthquake intensity does not exceed 8 degrees.