WEV-12

Indoor High-Voltage Vacuum
Circuit Breaker

• All-solid-sealed pole technology, high-performance of corrosion resistance

• Patented trip unit

• The simple overall structure, can be customized according to customers

• Rebound and re-ignition prevention

• No bounce during closing-operation

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Technical Parameters

Item	Unit	Data
Rated Voltage	kV	12
1 min power frequency withstand voltage	kV	42
Lighting impulse withstand voltage(peak)	kV	75
Rated current	A	630/1250	1600~40002
Rated short-circuit breaking current	kA	25/31.5	31.5/40
Rated short-circuit making current (peak)	kV	50/63	80/100
Rated switching capacitor inrush current	kV	12.5
Rated operating sequence		O-0.3s-CO-180s-CO
Permissible wearing accumulated depth for movable and fixed contact	mm	3
Closing time,Opening time	ms	≤50, ≤70
Mechanical endurance	Times	20000
Clearance between open contacts	mm	11±1 (9±1)
Contacting travel	mm	3.5±0.5
Center distance between phases	mm	300±1.5
Opening speed, Closing speed	m/s	0.9~1.2,0.4~0.8
Bouncing time	ms	≤2, (40KA≤3)
Three-phase opening and closing asynchronism	ms	≤2
Lengthdepthheight	mm	682598638(≤1600A), 882589725(≥2000A)