Page 9 - YINGMING POWER(HIGH VOLTAGE)

ZW32-12MF
OUTDOOR HIGH VOLTAGE PERMANENT
MAGNET VACUUM CIRCUIT BREAKER YINGMING POWER
The main technical parameters

The main mechanical parameters of the circuit breaker
project Unit parameter
Rated voltage kV 12
Rated current A 630. 1250
Rated frequency Hz 50
Power frequency withstand Dry (interphase, ground / fracture) 42/48
voltage (1min) Wet test (to ground, external insulation) kV 34
Lightning impulse withstand current (peak value) (interphase, ground / fracture) kA 75/85
Rated short-circuit breaking current kA 20 25
Rated short-circuit making current (peak value) kA 50 63
Main technical parameters of circuit breaker
project Unit parameter
Rated bee value withstand current kA 50 63
4S short-time withstand current kA 20 25
Rated operating cycle Points-0.3s-he points-180s-he points
Breaking times of rated short-circuit current Times 30
Mechanical life Times 30000
Secondary circuit 1min power frequency withstand voltage kV 2
Contact opening mm 9±1
Contact overtravel mm 2.5 ±1
Opening speed m/s 1.1 ±0.3
Closing speed m/s 0.6 ±0.2
Bounce time of contact closing ms ≤2
Center distance mm 340 ±2
Different phases of three-phase opening and closing ms ≤2
Conductive loop resistance of each phase μΩ ≤ 80 (with isolation ≤ 150)
weight KG About 70

Shape and installation size (mm)

Ÿ f

;8 .( 8JUI JTPMBUJPO

Ÿ f

;8 . 8JUIPVU JTPMBUJPO

02