The scope of application of open circuit breakers

On October 26, 2021, The scope of application of open type breaker     

it is suitable for the control and protection of the three-phase AC 40.5KV power transmission and distribution system, and can also be used for the occasion of connecting circuit breakers and switching capacitor combinations. It is suitable for urban substations, enterprise substations, and mountain substations with tight ground. a. Altitude: not more than 2000 meters.

1. Ambient temperature: -30°–+40° (special requirements are -40°–+40°).

2. Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90% (25°).

3. Wind speed: not more than 35 m/s.

4. Pollution level IV, the creepage distance of porcelain sleeve is greater than 1450mm (nominal creepage distance is greater than 31mm/KV).

5. No flammable, explosive, chemical corrosion and severe vibration occasions.

6. Earthquake intensity: no more than 8 levels.

7. The thickness of the track ice is not more than 10mm.


Post time: Oct-26-2021