High voltage electrical

VS1-12KV indoor vacuum circuit breaker

Product ID：High voltage electrical
Whatsapp & Wechat：+8613868719385
Phone: +8613868719385
Tel: +86 577 27880251
E-mail: info@dlxex.com
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ZN63-12(VS1-12)indoor high voltage vacuum circuit breaker for switchgear

High-voltage vacuum circuit breaker is named after its interrupting medium and the insulation medium of the contact gap after interrupting is high vacuum; vacuum circuit breaker has the advantages of small size, light weight, suitable for frequent operation and interrupting without maintenance, and is more popularly used in the distribution network.

VS1-12 indoor high voltage vacuum circuit breaker applies to power system of rated voltage 12kv as a protective and control unit for power grid equipment and industrial power equipment. It can equip with KYN28(GZS1), XGN, GG-1A and other types of switchgear panels. Related products: isolated handcart, fuse handcart and voltage transformer handcart.

Working principle

The components of the vacuum circuit breaker are vacuum interrupters, electromagnetic or spring operating mechanisms, brackets and other components. The conductive circuit is divided into the form of insulating cylinder and the form of solid-sealed pole.

The working principle of the vacuum circuit breaker is: when the moving and static contacts are opened under the action of the operating mechanism, an arc is generated between the contacts, and the surface of the contact volatilizes at high temperature. When passing through, a magnetic field is generated, and the arc moves rapidly along the tangential direction of the contact surface under the action of this magnetic field, and part of the metal vapor is condensed on the metal cylinder (shield), and the arc is extinguished when it naturally crosses zero. The strength of the medium quickly recovered.

Main Technical Parameters

Number	Parameter		Unit	Value
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated insulation level	Rated short-time power frequency withstand voltage (1min) (interphase, relative ground, fracture)	Hz	42
		Rated lightning impulse withstand voltage (phase, phase, port)	kV	75
4	Rated current		A	630	630	1250	1600
5	Rated short-circuit breaking current		kA	20 、25 、31.5 、40
6	Rated short-time withstand current (rated short-time thermal stability current)		kA	20 、25 、31.5 、40
7	Rated short-circuit making current		kA	50、 63、 80 、100
8	Rated peak withstand current (rated dynamic stable current)			50、 63、 80 、100
9	Rated short-circuit duration (rated thermal stabilization time)		S	4
10	Rated short-circuit current breaking times			O-0.3s-CO–180s-CO
				O-180s-CO-180s-CO(40kA)
11	Mechanical life		time	30、20( 40kA)
12	Rated single capacitor bank breaking current		time	20000
13	Rated single capacitor bank breaking current		A	630
14	Rated back-to-back capacitor bank breaking current		A	400
15	Out-of-phase earth fault breaking current		A	27.4
16	The moving and static contacts allow the accumulated thickness of wear		mm	3