ZN85-40.5 Indoor High-Voltage AC Vacuum Circuit Breaker

Working environment conditions:

4.1 The ambient air temperature does not exceed +40℃, and the mean value measured within 24h does not exceed 35℃, and the min. ambient air temperature is -15℃;

4.2 Altitude: ≤ 1,000 meters.

4.3 There is no obvious pollutions such as dust, smoke, corrosion or flammable gas, steam gas, or salt spray in the ambient air.

4.4 Humidity conditions: The daily mean is not greater than 95%, and the monthly mean is not greater than 90%; the mean value of water steam pressure is not greater than 2.2KPa, and the monthly mean of water steam pressure is not greater than 1.8KPa;

4.5 Vibration or earthquake from the outside of the switchgear or controlgear can be omitted; 4.6 The magnitude of the electromagnetic interference induced in the secondary system does not exceed 1.6kV.

4.7 Special working conditions If installed at the place where the altitude exceeds 1,000 meters, the ambient air temperature is out of the limit value specified by the normal working conditions or condensation may easily occur due to high humidity, please contact our company for customization.