Indoor high-voltage vacuum circuit breakerDetailed product description：

VS1-40.5 indoor high-voltage vacuum circuit breaker is mainly used in three-phase AC 50Hz power systems with a rated voltage of 40.5kV. It can be used for protection and control in industrial and mining enterprises, power plants, and substations, especially suitable for various frequent operating places. This product complies with the requirements of GB11022 "Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards", GB1984 "AC High Voltage Circuit Breakers", IEC56 "High Voltage AC Circuit Breakers" and other standards.

Main technical parameters of VS1-40.5 indoor high-voltage vacuum circuit breaker (indoor high-voltage vacuum circuit breaker VS-40.5 type)

serial number	project	unit	Technical Specifications
one	Contact opening distance	mm	18~20
two	overstroke		3~5
three	Allowable wear thickness of contacts		three
four	Average opening speed (8mm after contact separation)	m/s	1.0~1.5
five	Average closing speed (12mm before contact closure)		0.5~0.9
six	Contact closing bounce time		≤3
seven	Three phase asynchronous disconnection		≤2
eight	Three phase closing asynchrony	ms	≤2
nine	closing time		≤90
ten	Opening time		≤60
eleven	DC resistance of each phase conductive circuit (between the upper and lower plum blossom contacts)	μΩ	1250A	1600A，2000A
			≤50	≤40
twelve	Interphase center distance	mm	300±2

serial number	project		unit	Technical Specifications
one	rated voltage		kV	forty point five
two	Rated insulation level	1-minute power frequency withstand voltage		ninety-five
		Lightning impulse withstand voltage (peak value)		one hundred and eighty-five
three	rated current		A	630，1250，1600，2000
four	Rated short-circuit breaking current		kA	twenty	twenty-five	thirty-one point five
five	Rated short-circuit closing current (peak)			fifty	sixty-three	eighty
six	Rated operating sequence			0-0.3s-Co-180s-Co
seven	Rated out of step breaking current		kA	five	six point two five	eight
eight	Rated out of phase short circuit opening and closing			seventeen point four	twenty-one point seven	twenty-seven point four
nine	Average DC component of rated short-circuit breaking current			≤48%
ten	Rated breaking current of capacitor bank		A	four hundred
eleven	Rated short-circuit duration		S	four
twelve	Rated short-circuit breaking current breaking times		time	twenty
thirteen	Cut off time		ms	≤80
fourteen	mechanical life		time	twenty thousand
fifteen	Circuit breaker quality		Kg	two hundred and sixty

VS1-40.5 Indoor High Voltage Vacuum Circuit Breaker Appearance and Installation Dimensions (Indoor High Voltage Vacuum Circuit Breaker VS-40.5 Type)