VS1-24 Withdrawable indoor VCB vacuum circuit breaker

Description

Summary:

VS1-24 series of indoor high voltage vacuum circuit breaker with common insulated cylinder is three-phrase A.C. 50 Hz indoor power distribution equipment with the rated voltage of 24kV. It’ s used for protecting controlling the electrical equipment in the fields of industry and mining enterprise, power plants and substation.This type vacuum circuit breaker conforms to national standards and the stipulation of IEC standard, the capability reaches grade of M2-E2-C2.
The product adopts composite insulation way,spring charged operation and rod push mechanism,with the characteristics of small volume, compact design and reliable operation. It can easily match with the switchgear and meet the “Five Preventions” demands.
This kind of vacuum circuit breaker can be used for many kinds of switchgear like KYN28-24(GZS1). This series of products include: VCB truck isolation truck and Fuse truck, etc.

Applying Ambient Conditions:

1. Ambient temperature: -10℃–+40℃
2. Ambient humidity: the average humidity of a day should be no more than 95％; the average humidity of a month should be no more than 90％;
3. Earthquake intensity: not exceed 8 degrees
4. Saturated vapor pressure: average pressure of a day should be no more than2. 2kPa，the average pressure of a month should be no more than 1.8kPa;
5.The height above sea level: less than 1000m;(not including special requirements)
6.1t should be installed in the places without fire, explosion, serious filth, chemical corrosion and violent VS1 ration.

Technical Parameters

No.	Item	Unit	Data
1	Rated voltage	kV	24
2	Rated current	A	630	1250	1600		2000	2500		3150
3	Rated frequency	Hz	50
4	Rated short-circuit breaking current	kA	20		25			31.5
5	Rated short-circuit making current	kA	50		63			80
6	Rated short time withstand current	kA	20			25			31.5
7	Rated peak withstand current	kA	50			63			80
8	1min power frequency withstand voltage	kV	65
9	Rated lighting impulse withstand voltage	kV	125
10	Rated short-circuit duration	s	4
11	Rated operation sequence		O-0.3s-CO-180s-CO
12	Maximum D.C component		50%

 

Technical Drawings