Vacuum Breaker is used for controlling and protecting the electrical system and measuring the current transformers.

Item		Unit	ZW32-12/T400-12.5	ZW32-12/T630-16	ZW32-12/T630-20
Rated voltage		kV	12
Rated current		A	400	630	630
Rated short-circuit break current		kA	12.5	16	20
Rated short-circuit close curren t(peak value)			31.5	40	50
Rated peak value withstand current			31.5	40	50
Rated short-circuit withstand current			12.5	16	20
Rated short-circuit duration			4
Rated insula-tion level	Thunder impulse withstand voltage(peak value)	S	Interphase,grounding insulation75,fracture85
	1min industrial frequency withstand voltage	kV	Interphase, grounding insulation42,fracture48
Rated operation order			Off-0.3S on and off-180S-on and off(electromotion framework)
Rated short-circuit current break and close time		(times)	30
Mechanical life-span			10000
Rated operation voltage(on-off coil)		v	DC220, 110, AC220
Allowance abrasion cumulated thickness ofthe moving and stationary contact		mm	3
Rated current ofovercurrent trip		A	5
Current rate of current mutual inductor			200/5 400/5 600/5
Switching distance of the contact		mm	9±1
Contact exceed degree			2±0.5
Average speed of breaking brake		M/s	1.2±0.3
Average speed of closing brake			0.6±0.2
Time of breaking brake		ms	3060
Time of closing brake			2040
Bounce time of closing brake			≤2
The corresponding performance of three-phase breaking & closing brake			≤2
Loop direct current resistance of each phase		μΩ	≤80
Power storage electromoto	Rated voltage	V	-220
	Rated power	W	200
	Power storage time	s	≤8
Weight		kg	85