ZW7-405 outdoor high voltage vacuum circuit breaker

ZW7-405 outdoor high voltage vacuum circuit breaker overview:

ZW7-40.5 outdoor high voltage vacuum circuit breaker is a three-phase AC 50Hz outdoor high voltage switchgear. It is suitable for the control and protection of 35kV transmission system. It can also be used for connecting circuit breakers and opening and closing capacitor banks.

Main technical features of ZW7-405 vacuum circuit breaker:

1. Porcelain column structure, waterproof transmission box, new type of vacuum interrupter;

2, 2-3 current transformers, four coils per phase, according to user needs to choose to change;

3, can be equipped with CD10 electromagnetic mechanism or CT19 spring mechanism;

4. Good breaking performance, high reliability, long service life and small maintenance workload;

5. No oil, no gasification, economic and environmental protection;

6. After the external insulation is corrected, the altitude is 2700mm.

Environmental conditions for the use of ZW7-405 vacuum circuit breakers:

1. Altitude: ≤ 2500m;

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

3. The wind pressure does not exceed 700Pa (equivalent to a wind speed of 34m/s);

4. The seismic intensity does not exceed 8 degrees;

5. Air pollution level: Grade III;

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