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        ZW7-40.5/35KV SERIES OUTDOOR HIGH-VOLTAGE VACUUM CIRCUIT BREAKERS

        ZW7 -40.5/35KV series outdoor high-voltage vacuum circuit breakers (hereinafter referred to as “circuit breakers”) are used in three-phase power systems with AC 50Hz and rated voltage of 40.5KV, as the split, combined load current, overload current and short-circuit current.

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        Product Detail

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        Structural features

        1. Using vacuum arc extinguishing, strong breaking capacity, long electrical life, and mechanical life of 10,000 times;
        2. Simple structure, maintenance-free, long period of no maintenance;
        3. Good insulation performance and strong anti-pollution ability;
        4. It can be equipped with spring or electromagnetic operating mechanism, with reliable mechanical performance and frequent operation; no fire and explosion hazards;
        5. The measurement accuracy of the built-in current transformer can reach 0.2 level, or three-phase differential protection can be realized;
        6. The built-in condensation controller can keep the circuit breaker running reliably under a certain temperature and humidity.

        Structural features

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        Structural features

        ◆Ambient air temperature: upper limit +409C, lower limit -30°C (general area), -40C (alpine area);
        ◆Altitude: ≤1000m (if the altitude increases, the rated insulation level will increase accordingly);
        ◆Wind pressure: no more than 700Pa (equivalent to wind speed of 34m/s);
        ◆Earthquake intensity: no more than 8 degrees;
        ◆Dirty level: IV;
        ◆Maximum daily temperature difference: no more than 25°C.

        The main technical parameters

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        Main mechanical parameters

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        Shape and installation dimensions

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