Page 31 - YINGMING POWER(HIGH VOLTAGE)

ZN63A(VS1)-12C
INDOOR HIGH-VOLTAGE SIDE-MOUNTED
VACUUM CIRCUIT BREAKER YINGMING POWER
The main technical parameters

project Unit Parameter
Rated voltage kV 12
Maximum working voltage kV 12
Rated current A 630 1250 1600
Rated short-circuit breaking current kA 20 25 31.5
Rated short-circuit making current kA 50 63 80
Rated peak withstand current kA 50 63 80
4S rated short circuit withstand current kA 20 25 31.5
Rated insulation Power frequency withstand voltage (before and after rated breaking) kV 42 (fracture 48)
level Impact resistance (before and after rated breaking) 75 (fracture 85)
Rated operating sequence O-0.3s-CO-180s-CO
Mechanical life Times 1000
Breaking times of rated short-circuit breaking current Times 50
Operating mechanism rated closing voltage (DC) V 110，220
Operating mechanism rated opening voltage (DC) V 110，200
Contact opening mm 11±1
Overtravel (contact spring compression length) mm 4.5±0.5
Three-phase opening and closing bounce time ms ≤2
Bounce time of contact closing ms ≤2
Average opening speed m/s 0.9±1.2
Average closing speed m/s 0.4±0.8
At maximum operating voltage s ≤ 0.05
Opening time
At the lowest operating voltage ≤ 0.08
Closing time s 0.1
Main loop resistance of each phase uΩ 60 50

Shape and installation size (mm)

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