ZW32-12 type outdoor vacuum circuit breaker (hereinafter referred to as breaker) rated voltage 12KV, three-phase AC 50Hz outdoor distribution equipment. Mainly used for breaking, closing power system load current, overload current and short circuit current. Suitable for breaking, closing load current urban or rural distribution system, overload current and short circuit current is suitable for industrial and mining enterprises substation and power distribution system for protection and control purposes, and places of rural power grids frequent operation. Breaker for the new compact design, fully enclosed structure, good unique interrupter packaging technology, sealing performance, moisture, condensation, suitable for hot and humid regions. ZW32-12G breaker isolation switch combination of electrical isolation switch circuit breaker by ZW32 two major components. The three-phase circuit breaker pillars and agencies, simple structure, three-phase current transformer pillars and imported outdoor epoxy resin solid insulation, high temperature resistant, UV resistant, anti-aging benefits; miniaturized spring operating mechanism uses , open and close with low energy consumption, institutional transmission output shaft using a sliding manner, no torque loss, division less transmission parts, high reliability; current transformer installed in the movable end of qualifying, easy maintenance and replacement. ◇ can be mounted isolation switch, three-phase linkage, in isolating switch closing state obvious visible fracture, and has anti-breaker between the body mistakenly chain, easy maintenance, safety. ◇ breaking performance is stable and reliable, safe, no fire, no ** danger, maintenance-free, small size, light weight (100kg) and long service life. ◇ fully enclosed structure, good sealing performance, moisture-proof, anti-condensation properties, suitable for use with hot and humid regions. ◇ closing and opening of the circuit breaker, and energy storage can be manual or electric operation and remote operation. With controller supporting realize distribution automation, but also coincides with the composition of recloser controllers. ◇ operating mechanism is novel, simple, reliable operation, small size, mechanical life of up to 10,000 times. Installation can be single pole or double pole base loading mode. . Use of environmental conditions 1, altitude: ≤1000m (if required higher altitude, then each increased 1000m rated insulation level corresponding increase of 12%); 2, ambient air temperature: up to + 40 ℃, minimum -35 ℃; 3, pressure: no more than 700Pa (equivalent to wind speed 34m / s); 4, amplitude: no recurrent severe vibration; 5, the air pollution levels: Level Ⅲ; 6, maximum daily temperature: not exceed 25 ℃ The circuit breaker has small size, light weight, anti-condensation, maintenance-free characteristics, can adapt to poor weather conditions and filthy environment. ● standard GB1984 "AC high voltage circuit breakers" GB11022 "high-voltage switchgear and control equipment standards common technical requirements" GB311.1-6 "insulation with high-voltage power transmission equipment," GB763 "AC high voltage electrical heating during long-term work "GB2706" AC high voltage electrical dynamic and thermal stability test methods "GB3309" high-voltage switchgear mechanical tests at room temperature, "DL / T593" common ordering technology "high-voltage switchgear ● Model meaning of technical parameters Name Unit ZW32-12 (G ) /T400-12.5ZW32-12 (G) / T630-16ZW32-12 (G) / T630-20 kV12 rated voltage rated current A400630630 kA12.51620 rated short-circuit breaking current Rated short of current (peak) Rated Peak 31.54050 Rated short time withstand current 31.54050 12.51620 withstand current rated short duration S4 Rated insulation level Lightning impulse withstand voltage (peak) kV and white, on the ground 75, the fracture 851min frequency withstand voltage phase to ground 42, 48 fracture rated Operating sequence stars -0.3s- close -180s- combined points (motor mechanism) rated short-circuit current breaking times 30 Mechanical life 10000 rated operating voltage (switching coil) vDC220,100, AC220 head movement allows the accumulated wear thickness mm3 overcurrent Rated current A5 current transformer ratio 200/5400/5600/5 open contacts contact overtravel mm9 ± 1 2 ± 0.5 Average opening speed m / s1.2 ± 0.3 0.6 ± 0.2 Average closing speed Opening time Closing time 20-40 ms30-60 closing bounce time ≤20 ≤2 Three-phase closing year of each phase circuit DC resistance μΩ≤80 charging motor rated voltage V-220 rated power W200 storage time S ≤8 isolation switch circuit resistance (breaker panel to switch into the line between the isolation plate) is a three-phase knife switch on the center μΩ≤120 deflection amount mm≤2 three-phase knife points, closing simultaneity bias ≤2 conductive part of the insulation from the fracture open distance ≥200 ≥160 quality kg80