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
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