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China Industrial Products Supplier Manufacturer List Catalog
Electric MotorElectric Motor PartsZw7Zw7 36/40.5kv Vacuum Break Switch
Wenzhou Mingzhe Electric Co., Ltd.
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Product Description Product DescriptionZW7-1600ZW7-40.5 outdoor high voltage vacuum circuit breaker is used for AC three-phase power system with 50Hz and voltage of 40.5KV, which is used for breaking, closing load current, overload current and short circuit current.The main function:1. Vacuum arc extinguishing, strong breaking capacity, long electrical life and 10,000 mechanical life;2. Simple structure, maintenance-free, long maintenance period;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 hazard;5. Built-in current transformer, the lecturer's precision reaches 0.2, which can realize three-phase interactive protection;6. With condensation controller, it can keep the circuit breaker running reliably under certain temperature and humidity.Environmental conditions:1. Ambient air temperature: upper limit +50°C, lower limit -30°C;2. Altitude: ≤3000m (If the altitude is to be increased, the rated insulation level will increase accordingly);3. Wind pressure: no more than 700Pa (equivalent to a wind speed of 34m/s);4. Amplitude: seismic intensity of 8 degrees;5. Pollution level: Level III;6. Large daily temperature difference: no more than 35°C.Product ParametersNOItemUnitValue1Rated voltageKV40.52Rated insulation levelPower frequency withstand voltageDry test95Wet test80Lightning impulse withstand voltage (peak)1853Rated currentA1250,1600,20004Rated short-circuit breaking currentKA20,25,31.55Rated operation sequence 0-0.3s-combination-180s-combination6Rated short circuit current breaking timestimes127Rated short circuit closing current (peak)KA50,63,808Rated peak withstand current9Rated short-time withstand currentKA20,25,31.510Rated short circuit continuous currentS411Average opening speedm/s1.5±0.212Average closing speed0.7±0.213Contact closing bounce times≤214Three-phase combined (minute) gate synchronous time difference≤215Closing time≤15016Opening time≤6017Mechanical lifetimes1000018Rated operating voltage and auxiliary circuit rated voltageVDC220,110,24AC220,110,2419DC resistance per phase circuit (without transformer)μΩ≤10020Dynamic and static contacts allow wear thicknessmm321weightkg800Detailed Photos
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