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12KV Vacuum Interrupter for Vacuum Circuit Breaker

China

Manufacturer

Recommended by CCCME

12KV Vacuum Interrupter for Vacuum Circuit Breaker

Main Technical Specification	Unit	Specification
Rated voltage	kV	12
Rated current	A	630
Rated frenquency	Hz	50
Rated short-time power frequency withstand voltage(1min)	kV	32
Rated lightning impulse withstand voltage	kV	75
Rated short-circuit breaking current	kA	16/20
Rated short-circuit making current(peak)	kA	40/50
Rated operations of short-circuit breaking current interruption	Times	30
Rated single capacitor bank breaking current	A	400
Rated short-time withstand current	kA	16/20
Rated peak withstand current	kA	40/50
Rated duration of short-circuit	S	4
Mechanical life	Times	30000
Contact closing force due to bellows and atmosphere	N	120±40
Counterforce at rated contact stroke	N	180±50
Circuit resistance at rated contact force	μΩ	≤20
Shelf life	Years	20
Contact erosion limit	mm	3
Weight of moving parts	Kg	≤0.7

Mechanical Data Required For Matched Vacuum Switchgear
Main Technical Specification	Unit	Specification
Rated contact stroke	mm	9±1
Average opening speed	m/s	1.0±0.25
Average closing speed	m/s	0.65±0.15
Added contact force	N	1300/1600±100
Contact bouncing duration at closing operation	ms	≤2
Contact bouncing bank amplitude of opening operation	mm	≤2
Three-pole simultaneity	ms	≤1

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