Honle Zw32-24 Outdoor High Voltage Intelligent Vacuum Circuit Breaker

Product DescriptionZW32-24 Outdoor High Voltage Intelligent Vacuum Circuit Breaker(watchdog timer)OverviewZW32-24 outdoor high voltage intelligent vacuum circuit breaker is an outdoor power distribution equipment with a rated voltage of 24kV, 50H, three-phase AC. It is mainly used for breaking and closing load current, overload current and short-circuit current in power system of distribution network. It is suitable for protection and control in power distribution systems of substations and industrial and mining enterprises. It is more suitable for rural power grids and frequently operated places, and is especially suitable for the needs of urban and rural power grid transformation.Using conditionsAmbient air temperature: -40°C ~+40°C;Relative humidity:daily average≤95%;monthly average≤90%Altitude:≤ 2000 meters;The wind speed:≤ 34m/s;Daily temperature difference:25°CNo flammable, explosive, strong chemical corrosive and violent vibrationTechnical parameterItemUnitSpecificationRate voltagekV24Rate currentA630/1250Rate frequencyHz50Power frequency withstand voltage (1min)kVphase to phase/ground:65 fracture:65Lightning impulse withstand current (peak)kVphase to phase/ground:125 fracture:145Rated short-circuit making current (peak)kA20/25/31.5Rated short-circuit withstand currentkA50/63/80Rated short-circuit withstand current(peak)kA50/63/80Rated short-time withstand current,4SkA20/25/31.5Rated short-circuit current breaking timestimes30Mechanical lifetimes10000Power frequency withstand voltage of secondary circuit (1min )kV2  ItemUnitSpecificationContact strokemm12±1Contact over-travelmm3±1Opening speedm/s1.1-1.7Closing speedm/s0.5-1.0Contact closing bouncing durationms≤2Center distance between phasesmm395±2Opening/Closing synchronism between poles ms≤2Conductive loop resistance of each phaseμΩ