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ZW7-40.5 Outdoor Vacuum Circuit Breaker
  • ZW7-40.5 Outdoor Vacuum Circuit BreakerZW7-40.5 Outdoor Vacuum Circuit Breaker

ZW7-40.5 Outdoor Vacuum Circuit Breaker

The vacuum interrupter of the circuit breaker adopts solid sealing technology, and the external insulation adopts silicone rubber sleeve; ZW7-40.5 Outdoor Vacuum Circuit Breaker has long life and high reliability; the operating mechanism can adopt a miniaturized, high-reliability spring mechanism, or an advanced permanent magnet mechanism.


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Product Description

Product Description of ZW7-40.5 Outdoor Vacuum Circuit Breaker

General ZW7-40.5 Series outdoor high voltage vacuum circuit breaker is rated voltage 40.5kV, three phase AC 50Hz outdoor distribution equipment. Mainly used for 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 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.

Overall dimension

Outdoor Vacuum Circuit Breaker Parameters

No. Item Unit Parameters
1 Rated voltage KV 40.5
2 Rated frequency Hz 50/60
3 Rated current A 630/1250
4 Rated short-circuit breaking current kA 31.5
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 (1 min), wet/dry: inter-phase, earth, fracture  KV 80/95
11 Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture KV 185
12 Rated operate sequence   O-0.3-CO-180S-CO
13 Secondary circuit 1min power frequency voltages KV 2

Outdoor Vacuum Circuit Breaker Feature And Application

The circuit breaker has the features of small size, light weight, anti-condensation, maintenance and so on. Adapt to bad weather conditions and dirty environments.

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