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Home >> Product >> High-voltage components
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summary:

ZW7-40.5 series outdoor high-voltage vacuum circuit breaker (hereinafter referred to as "circuit breaker") is used in three-phase power system with AC 5OHz and rated voltage of 40.5iV for breaking and closing load current, overload current and short circuit current.

Environmental conditions:

1. Ambient air temperature: upper limit+40 ℃, lower limit - 30 ℃ (general area), - 40 ℃ (high and cold area); 2. Altitude: ≤ 1000m (if the altitude increases, the rated insulation level will increase accordingly);

3. Wind pressure: no more than 70OPa (equivalent to 34m/s wind speed);

4. Seismic intensity: no more than Lv degrees;

5. Pollution level: Grade IV;

6. Daily temperature difference: no more than 25 ℃.

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