ZW32-12 technical parameters Shaanxi Province spot ZW43-12 voltage vacuum circuit breaker Unit ZW32-12 (G) /T400-12.5 ZW32-12 (G) / T630-16 ZW32-12 (G) / T630-20 Rated voltage kV 12 Rated current A 400 630 630 Rated short-circuit breaking current kA 12.5 16 20 rated short of current (peak) 31.5 40 50 31.5 Rated peak withstand current Rated short time withstand current 40 50 12.5 16 20 Rated short circuit duration S 4 insulation level Lightning impulse withstand voltage (peak) kV and white, on the ground 75, the fracture 85 1min power frequency withstand voltage phase to ground 42, 48 fracture Rated operating sequence stars -0.3s- close -180s- combined points (electric institutions) rated short-circuit current breaking times 30 Mechanical life 10000 rated operating voltage (switching coil) v DC220,100, AC220 head movement allows the accumulated wear thickness mm 3 over-current release rated current A 5 Shaanxi Province spot ZW43-12 high voltage vacuum circuit breaker current transformer ratio 200/5 400/5 600/5 contact opening distance mm 9 ± 1 contact overtravel 2 ± 0.5 Average opening speed m / s 1.2 ± 0.3 0.6 ± 0.2 Average closing speed Opening time Closing time ms 30-60 20-40 ≤20 closing bounce time of opening and closing the same period of the three-phase ≤2 Shaanxi Province spot ZW43-12 voltage vacuum circuit breaker for each phase circuit DC resistance μΩ ≤80 charging motor rated Rated power voltage V -220 W 200 storage time S ≤8 isolation switch circuit resistance μΩ ≤120 knife when closing the three-phase central deflection amount mm ≤2 Three-phase knife points, closing simultaneity bias ≤2 conductive portion the insulation distance away from open fracture ≥160 ≥200 Weight kg 80 Shaanxi Province spot ZW43-12 high voltage vacuum circuit breaker