ZW32-12 Series Column Outdoor High Voltage Vacuum Circuit Breaker High Voltage Circuit Breaker

Product Overview
ZW32-12 and ZW32-12G series column type outdoor high-voltage vacuum circuit breakers are outdoor high-voltage switchgear equipment with three-phase AC 50Hz and rated voltage of 12kV. Suitable for breaking and closing load current, overload current, and short-circuit current in urban or rural distribution systems.
Technical Specifications
Name Unit ZW32-12G/T400-12.5 ZW32-12G/T630-16 ZW32-12G/T630-20
Rated voltage kV 12
Rated current A 400 630 630
Rated short-circuit breaking current kA 12.5 16 20
Rated short to medium closing current (peak) 31.5 40 50
Rated peak withstand current 31.5 40 50
Rated short-time withstand current 12.5 16 20
Rated short-circuit duration S 4
Rated insulation level lightning impulse withstand voltage (peak) kV phase to phase, ground 75, fracture 85
Min power frequency withstand voltage phase to phase, ground 42, fracture 48
Rated operating sequence: -0.3s-in-180s-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-in-a-
Rated short-circuit current breaking times 30 times
Mechanical lifespan of 10000
Rated operating voltage (switching coil) v DC220100, AC220
Allowable wear of the dynamic and static head, cumulative thickness mm 3
Rated current of overcurrent release A 5
Current transformer current ratio 200/5 𧊐/5 𧍘/5
Contact opening distance mm 9 ± 1
Contact overtravel 2 ± 0.5
Average opening speed m/s 1.2 ± 0.3
Average closing speed 0.6 ± 0.2
Opening time ms 30-60
Closing time 20-40
Closing bounce time ≤ 20
Synchronization of three-phase opening and closing ≤ 2
The DC resistance of each phase circuit is less than or equal to 80
Rated voltage of energy storage motor V-220
Rated power W 200
Energy storage time S ≤ 8
Isolation switch circuit resistance (between the circuit breaker terminal board and the isolation switch incoming board), with a minimum of 120 μ Ω
When the three-phase knife switch is closed, the center deflection is mm ≤ 2
The synchronous deviation of three-phase knife switch opening and closing is ≤ 2
The insulation distance between the conductive part and the ground is ≥ 160
Fracture distance ≥ 200
Mass kg 80