ZW8G-12KV high voltage vacuum circuit breaker

ZW8G high voltage vacuum circuit breaker overview

ZW8-12 outdoor column vacuum circuit breaker is used for three-phase power system with voltage of 10~12kV. It is used for breaking and closing load current. It has overload and short circuit protection function, automatic reclosing function, and can also be used according to users. It is required to be equipped with a surge current delay protector and an isolating switch with a lightning arrester function (ie, a combination of a circuit breaker and an isolating switch, hereinafter referred to as a “combined circuit breaker”).
ZW8G high voltage vacuum circuit breaker model and its meaning

Environmental conditions for use of ZW8G high voltage vacuum circuit breaker

1. Altitude: ≤1000m (If you need to increase the altitude, the rated insulation level for each 1000m increase will increase by 12%);

2, ambient air temperature: up to +40 ° C, the lowest -35 ° C;

3, wind pressure: no more than 700Pa (equivalent to wind speed 34m / s);

4, amplitude: no frequent and severe vibration;

5. Air pollution level: Grade III;

6, the maximum daily temperature difference: no more than 25 ° C