10kV MV Outdoor Vacuum Circuit Breaker/VCB Switch on Pole, ZW32-12(G)

EXZW32-12(G)

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1 piece

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1. General description

EXZW32-12(G) series column type outdoor H.V. vacuum circuit breaker is an outdoor H.V. switch equipment with tri-phase AC 50Hz, rated voltage 12kV. It is suitable for breaking, closing load current, overload current and short-circuit current of the urban or rural electrical power distribution system.

EXZW32-12G vacuum circuit breaker isolator combination electric appliance match with isolation blade has evident fracture to increase safety.

2. Main technical parameter

Item	Unit	ZW32-12(G)/400-12.5	ZW32-12(G)/630-16	ZW32-12(G)/630-20
Rated voltage	kV	12
Rated current	A	400	630	630
Rated short circuit breaking current	kA	12.5	16	20
Rated short circuit making current (peak)	kA	31.5	40	50
Rated peak withstand current	kA	31.5	40	50
Rated short time withstand current	kA	12.5	16	20
Rated short circuit duration	S	4
Rated insulation level 1min power frequency withstand voltage	kV	Phase to phase, to ground 42; fracture 48
Rated insulation level lightning impulse withstand voltage (peak)	kV	Phase to phase, to ground 75;fracture 85
Rated sequence of operations		O-0.3s-CO-180s-CO
Rated short circuit current breaking time	time	30
Mechanical life	time	10000
Rated operation voltage (opening, closing coil)	V	DC220,110; AC220
Allowable attrition thickness of moving and fixed contact	mm	3
Over-current release rated current	A	5
Current transformer ratio		200/5 400/5 600/5
Clearance between open contacts	mm	9±1
Contact over travel	mm	2±0.5
Average opening speed	m/s	1.2±0.3
Average closing speed	m/s	0.6±0.2
Opening time	ms	30~60
Closing time	ms	20~40
Closing bounce time	ms	≤2
Tri-phase opening and closing synchronous	ms	≤2
Each phase loop DC resistance	μΩ	≤80
Stored energy motor rated voltage	V	-220
Stored energy motor rated power	W	200
Stored energy motor stored energy time	S	≤8
Weight	Kg	85, 125 (with G)

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