ZW8M-12 outdoor high voltage permanent magnet vacuum circuit breaker
Environmental conditions of use
1. Ambient air temperature: upper limit +40 degrees, lower limit - 40 degrees
2. Altitude: ≤2000m (if the altitude increases, the rated insulation level will be increased accordingly)
3. Wind pressure: no more than 700Pa (equivalent to wind speed 34m/s)
4. Seismic intensity: no more than 8 degrees
5. Pollution Level: Class IV
6. Maximum daily temperature difference: no more than 25 degrees
7. Relative humidity: daily average is not more than 95%, monthly average is not more than 90%
8. No flammability, explosion hazard, chemical corrosion and severe vibration
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