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Home >> Product >> High-voltage components
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ZW7-40.5 outdoor high-voltage vacuum circuit breaker is used for three-phase power system with AC 50Hz and voltage of 40.5kV as breaking and closing load current, overload current and short circuit current.

Normal use environment:

1. Ambient air temperature: upper limit+40 ℃, lower limit - 30 ℃ (normal area), - 40 ℃ (high cold area);

2. Altitude: ≤ 1000m (if the altitude increases, the rated insulation level will increase accordingly);

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

4. Seismic intensity: no more than 8 degrees;

5. Pollution level: IV;

6. Maximum daily temperature difference: not more than 25C.

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