China Rooq-6kv 1250A Indoor Sealed High Voltage Vacuum Breaker

Product Description

VS1 Indoor Vacuum Breaker

Product Description

VS1 indoor medium voltage Vacuum Circuit Breaker is a three-phase AC 50Hz ,rated voltage 6KV,12KV,24KV switch equipment of power system.

Breaker adopts the integral design of the actuating mechanism and the breaker body, which can be used as a fixed installation unit or as an individual VCB carriage together with handcart. They have a long life expectancy. There is no adverse effect on the vacuum, even from frequent switching of operating and short-circuit currents.

Advantages

VS1 type VCB consist of operating mechanism and arc-extinguish chambers in front-back arrangement, its main conductive circuit is floor model structure. The vacuum arc-extinguish chamber is fixed in a vertical cannular insulation column made of epoxy resin by APG technology, therefore with high anti-creepage function. Such structure design greatly reduces the accumulation of dusts on the surface of vacuum arc- extinguish chamber, it not only can prevent the vacuum extinguish chamber from outside influences, but also can ensure to present high resistance state against the voltage effect even in warm-wet climate or heavy pollution environment.

1 - with reliable interlock functions, suitable for frequent operation

2 - low noise and energy consumed

3 - simple and robust construction.
4 - high operating reliability

5 - mechanical durability of switch : 20000 times, etc

Fields of application

1 - Transformers and distribution substations
2 - Generator control and protection

3 - Capacitor bank control and protection, etc

Mechanical parameters

No.	Item	Unit	Date
1	Rated voltage	KV	12				24
2	Clearance between open contacts	mm	11±1				13±1
3	Over travel of moving contact		3.5±0.5				3.5±0.5
4	Three poles asynchronous time at opening	ms	≤2				≤2
5	Moving contact bounce time at closing	ms	≤2				≤2
6	Average opening speed	m/s	0.9-1.2				0.9-1.2
7	Average closing speed		0.6-0.8				0.6-0.8
8	Connecting pressure of close contacts	N	20kA	25kA	31.5kA	40kA	20kA	25kA	31.5kA	40kA
			2000±200	2400±200	3100±200	4250±200	2000±200	2400±200	3100±200	4750±200

Main characteristics

No.	Item	Unit
1	Rated voltage	KV	12			24
2	Power frequency withstand voltage		42			65
3	Lightning impulse voltage(peak value)		75			125
4	Frequency	Hz	50			50
5	Rated current	A	630 1250	630 1250 1600 2000 2500 3150	1250 1600 2000 2500 3150 4000	630 1250	630 1250 1600 2000	1600 200 2500
6	Short circuit breaking current	kA	20/25	31.5	40	25	25/31.5	31.5/40
7	Thermal stability current	kA	20/25	31.5	40	25	25/31.5	31.540
8	Dynamic stable current	kA	50/63	80	100	63	80	100
9	short-circuit making current	kA	50/63	80	100	63	80	100
10	Rated current breaking time	Times	20000			20000
11	Short circuit breaking current times	Times	≤50			≤30
12	Operation voltage	V	AC/DC 110/220			AC/DC 110/220
13	Input power	W	70			70
14	Storage time	s	≤15			≤15
15	3 phase non-synchronous	ms	≤2			≤2