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VCB 12KV 630A Vacuum Withdrawable Circuit Breaker High Stability

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VCB 12KV 630A Vacuum Withdrawable Circuit Breaker High Stability

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Brand Name :	KNKONG
Model Number :	VS1-12
Certification :	CB,ISO,IEC
Payment Terms :	L/C, T/T, Western Union
Supply Ability :	1000 Unit per month
Delivery Time :	15 working days

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VCB 12KV 630A Vacuum Withdrawable Circuit Breaker High Stability

VCB 12KV 630A VS1 series vacuum circuit breaker withdrawable type

Voltage: 12KV

Current: 630A

Breaking current: 25KA

Type: withdrawable

VS1-Series circuit breaker features high stability and high reliability

From the operating mechanism, the transmission components of the VS1 series vacuum circuit breakers have been optimized. The modular spring mechanism is easy to maintain in use, the repair time is shorter after power failure, the parts are more versatile, and the compatibility with the vacuum interrupter is better, which greatly improves the performance of the equipment.

Normal service condition

Altitude		≤1000m
Ambient temperature	Max	+40℃
	Min	-15℃
Ambient humidity: Maximum average humidity		24 hours ≤95%
		1 month ≤90%
Maximum water vapor pressure		24 hours ≤2.2kpa
		1 month ≤1.8kpa

Technical Parameters

No.	Item		Unit	Parameter
1	Rated voltage		KV	12
2	Rated frequency		Hz	50/60
3	Rated insulation level	1min power frequency withstand voltage(r. m. s)	KV	42(phase-to-phase, phase-to-earth) 48(across the isolating distance)
		Lighting impulse withstand voltage (peak)		75(phase-to-phase, phase-to-earth) 85(across the isolating distance)
4	Rated current		A	630	630		1250		1600
				1250	1250		1600		2000
							2000		2500
							2500		3150
									4000
5	Rated short-circuit breaking current		KA	20	25		31.5		40
6	Rated short-time withstand current			20	25		31.5		40
7	Rated short-circuit marking current			50	63		80		100
8	Rated peak withstand current			50	63		80		100
9	Rated duration of short-circuit		s	4
10	Rated operating sequence			O-0.3s-O/C-180s-O/C
11	Breaking times of rated short-circuit current		Times	30/20 times(40KA)
12	Mechanical endurance		Ops	20000
13	Rated single capacitor bank breaking current		A	630
14	Rated back-to-back capacitor bank breaking current			400
15	Double-earth fault breaking current			27.4
16	Allowable maximum contact erosion		mm	3
17	Clearance between open contacts			10±1
18	Over stroke			3.5±0.5
19	Non-simultaneity of 3-phase opening and closing		ms	≤2
20	Bounce duration of contact closing			≤2
21	Average breaking speed (instant breaking 6mm)		m/s	1.1±0.2
22	Average making speed			0.8±0.2
23	Making time		ms	≤100
24	Breaking time			≤50
25	Resistance of each phase main circuit		μ Ω	630A			≤50
				1250A			≤45
				1600A~2000A			≤35
				≥2500A			≤25
26	Contact breaking bounce amplitude		mm	≤2
27	Rated operating voltage	Rated operating voltage(V)AC/DC	V	24*		110		220
		Scope of normal operation voltage		Opening:65%-120% rated voltage, in case the voltage is lower than 30% rated voltage, opening operation is not allowed
28	Rated voltage of energy storage motor		V	AC110/220,DC110/220
29	Energy storage time		S	≤15

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