Home Companies Knkong Electric Co.,Ltd

Fixed Type 205 Phase Spacing VCB Circuit Breaker Environmental Protection

Active Member

Contact Us

[China]

Address: No. 25 Street , Hanghai Road, Zhengzhou,Henan,China

Contact name:Ken Chan (English)

Knkong Electric Co.,Ltd

Fixed Type 205 Phase Spacing VCB Circuit Breaker Environmental Protection

Country/Region	china
City & Province	zhengzhou henan
Categories	Battery Chargers

Product Details

VS1-12 fixed type 205 phase spacing Vacuum Circuit Breaker 12KV 630A

Voltage: 12KV

Current: 630A

Breaking current: 20KA

Type: Fixed

Product overview

VS1-Series circuit breakers are complete independently developed by Knkong based on the advanced design concept; it adopts a modularized mechanism, which is easy for installation, maintenance, testing, and operation. As compared with conventional VS1 circuit breaker. it features higher operation stability, higher safety, and extended service life. The product can satisfy customers demand application in 12kv and 24kV power transmission and distribution systems, which is extensively applied in such industries as power, energy, petrochemical engineering, metallurgy, manufacture, traffic, building, and environmental protection as well as large-scale enterprises and national key projects

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

Operation safety

The circuit breaker has anti-mis-lock protection and "5 guarantees" interlocking function to avoid misoperation and protect the personal safety of operators to the greatest extent.

Only when the circuit breaker and the grounding switch are in the off position, the circuit breaker cart can roll from the test position to the service position

The circuit breaker can only be closed in the service/test position.

After the circuit breaker is closed, the truck cannot be rolled in or out, only when the circuit breaker is in the open position.

The circuit breaker cannot be rolled out from the service position to the test position in the closed position.

The circuit breaker cannot be closed when pushed in.

When the circuit breaker is closed, if the closing signal is not released in time, the internal anti-trip control circuit will cut off the closing circuit to prevent multiple reclosing (optional).

If electric closing and locking is selected, when the secondary circuit cannot provide power or the power provided cannot satisfy the normal operation of the locking electromagnet (optional), the circuit breaker will not be closed.