Indoor Vacuum Circuit Breaker for Switchgear Mounting 12kV

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Export Markets:	South America, Eastern Europe, Southeast Asia, Eastern Asia
Place of Origin:	Zhejiang in China
Packaging Details:	120120110cm wooden case, CIQ free

Quick Details

Technical parameter

Item		Unit	Data
Rated voltage		kV	3.3/6.6/10
Maximum working voltage		kV	3.6/7.2/12
Rated current		A	630	630	630,1250,1600
			1250	1250	2000, 2500,3150
Rated short circuit breaking current		kA	20	25	31. 5
Rated short circuit closing current (peak)		kA	50	63	80
Rated withstand current (peak)		kA	50	63	80
Rated short-time withstand current (4s)		kA	20	25	31. 5
Rated insulation level	1 min power frequency withstand voltage	KV	42( fracture 48)
	Rated lightning impulse withstand voltage		75( fracture 85)
Rated operation order			O-0. 3s-CO-180s-CO
Mechanical life		Times	Spring Operation 10000 Permanent Magnetic 30000
Breaking times of rated short circuit breaking current		Times	50
Rated operating voltage of closing coils (DC/AC)		V	110,220
Rated operating voltage of opening coils (DC/AC)		V	110,220
Clearance between open contacts		mm	11±1
Ultra contact (contact spring compressed length)		mm	4±0.5
Three phase opening and closing bounce time		ms	≤2
Contact closing bounce time		ms	≤2
Average opening speed		m/s	0.9 ~1.2
Average closing speed		m/s	0.5 ~0.8
Opening time	under maximum operating voltage	s	≤ 0.05
	under minimum operating voltage		≤ 0.08
Closing time		s	≤0.1
Main circuit resistance of each phase		μΩ	630≤60 1250≤40
Allowance abrasion cumulated thickness of the moving and fixed contact		mm	3

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