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20KA Breaking Indoor Switchgear VCB Circuit Breaker Fixed Type

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20KA Breaking Indoor Switchgear VCB Circuit Breaker Fixed Type

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Brand Name :	KNKONG
Model Number :	VS1-12
Certification :	CB,ISO,IEC
Price :	USD 1000-2000 Each
Payment Terms :	L/C, T/T, Western Union
Supply Ability :	1000 Unit per month
Delivery Time :	15 working days

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20KA Breaking Indoor Switchgear VCB Circuit Breaker Fixed Type

12KV 2000A fixed type indoor VCB 205 phase spacing VS1-12

Voltage: 12KV

Current: 2000A

Breaking current: 20KA

Type: Fixed

Phase spacing: 205

Product overview

The vacuum circuit breaker is suitable for 12kV, three-phase AC 50Hz indoor switchgear, and can be used as a protection and control unit for substation equipment in industrial and mining enterprises. The spring operating mechanism of VS1 series circuit breaker adopts modular and independent frame design, which can be operated with KYN28-12(24) central and fixed switchgear. These circuit breakers can be fixedly installed or assembled with a truck as a trolley unit

VS1-Series circuit breakers are Class M2.c2 and E2 model

Vs1-Series circuit breaker is available for the environment. Maintenance-free and capable of frequent operation. Compared with traditional circuit breaker products. These breakers have their mechanical endurance raised to 20 000 ops from 10, 000 ops with an enormous improvement. The type test for capacitive current breaking shows an extraordinarily low restrike probability. These products feature prolonged electrical endurance and free maintenance.

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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