RMVS1 series high-voltage vacuum circuit breakerDetailed product description：

RMVS1 (ZN63A) vacuum circuit breaker is an indoor high-voltage switchgear. Under normal operating conditions, as long as it is within the technical parameters of the circuit breaker, it can ensure safe and reliable operation in the corresponding voltage level of the power grid. This product can perform frequent operations or break short-circuit currents multiple times within the working current range; The mechanical lifespan can reach up to 20000 times, and the full capacity short-circuit current can be broken up to 50 times. It is suitable for reclosing operation and has extremely high operational reliability and lifespan. Its installation form inside the switchgear can be either fixed, withdrawable, or installed on a frame for use.

Technical data and performance of RMVS1 series high-voltage vacuum circuit breaker:

project	unit	numerical value
rated voltage	kV	twelve
Rated insulation level	1-minute power frequency withstand voltage	kV	42 (fracture 48)
	Lightning impulse withstand voltage (peak value)	kV	75 (fracture 85)
rated frequency		Hz	fifty
rated current		A	630,1250	630,1250,1600,2000,2500,3150	1600,2000,2500,3150,4000	4000，5000
Rated short-circuit breaking current (effective value)		kA	twenty-five	thirty-one point five	forty	fifty
Rated peak withstand current		kA	sixty-three	eighty	one hundred	one hundred and twenty-five
Rated short-circuit closing current		kA	sixty-three	eighty	one hundred	one hundred and twenty-five
Rated short-time withstand current		kA	twenty-five	thirty-one point five	forty	fifty
Rated short-circuit duration		s	four
Rated breaking current of single/back-to-back capacitor bank		A	630/400 (800/400 for 40~50kA)
Rated capacitor bank closing inrush current		kA	12.5 (frequency not exceeding 1000Hz)
Rated opening and closing cable charging current		A	twenty-five
Rated operating sequence	Automatic reclosing (25~31.5kA)	-	Min-0.3s HeFen-180s HeFen
	Non automatic reclosing (40~50kA)	-	Split -180s - Split -180s - Split
Rated operating voltage of operating mechanism		V	AC：110,220； DC：110,220
closing time		ms	30~70
Opening time			20~50
arcing time			≤15
Classification of mechanical lifespan		-	M2 level 20000 times (40~50kA for M1 level 10000 times)
Classification of electrical lifespan		-	E2 level
Classification of the ability to open and close capacitive currents		-	C2 level
Center distance between phases ※	Rated current ＜ 2000A	mm	210±0.5
	Rated current ≥ 2000A		275±0.5
Contact closing bounce time	Rated current ＜ 2000A	ms	≤2
	Rated current ≥ 2000A		≤3
Three phase on-off asynchrony			≤2
Allowable cumulative thickness of wear for dynamic and static contacts		mm	three
Contact opening distance			11±1
overstroke			3±0.5
Average closing speed		m/s	0.5~0.8
Average opening speed			0.9~1.2
loop resistance	630A	μΩ	≤50
	1250A		≤45
	1600~2000A		≤35
	2500~3150A		≤25
	4000~5000A		≤18

Note ※: When the rated current is 1600A and the breaking current is 31.5kA, a distance of 210 or 275 is optional; When the rated current is 1600A and the breaking current is 40.5kA, the distance is 275.