タイトルまたは説明

China VS1 (ZN63A) -12/24 Model indoor AC high voltage vacuum circuit breaker is a type of holistic and completely sealed HV switchgear, it has compactable dimension and small volume. The VCB applies to power system of rated voltage 12kV and 24kV, three-phase and AC 50/60Hz. It is applicable in occasions with frequent operations, acting to protect and control line and electric apparatus. 

Product features

1. Conform toconforms to IEC62271, GB1984, JB3855 and DL1403 standard
2. Ideal contact material and shape, ensuring low current carrying value and stable contact resistance
3. Integrated design of main conductive circuit made of compound isolation material and operating mechanism
4. Few components and parts, compact and logical structure, assuring more reliable and safer operation
5. Compact design enables the breaker to be installed within almost all switchgears
6. Epoxy resin insulation cylinder can withstand severe environmental impacts, enabling VS1 breakers to be used in all kinds of situations.
7. Superior cost performance, ideal choice for engineering programs

Product application conditions

1.  Ambient air temperature: -15℃ to +40℃，the average temperature is not exceeding 45℃
2. Average relative humidity: ≤95%ï¼›The average daily water vapor pressure shall not exceed 2.2kPa, and the average monthly relative humidity shall not exceed 90%
3. Average daily vapor pressure shall not exceed 2.3kPa, average monthly mean vapor pressure shall not exceed 1.8kPa.
4.  The altitude:≤1500m
5.  The surrounding air is not visibly contaminated by dust, smoke, corrosive and flammable gases, vapors or salt mists
6. The amplitude of induced electromagnetic interference in the secondary system shall not exceed 1.6kV
7. No water dropping, flammable and explosive hazards in the application places, without chemical corrosive gases and violent vibrations.

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No.	Item	Unit	Parameter
1	Rated voltage	kV	12/24
2	Rated power frequency withstand voltage (1min)	kV	42/48
3	Rated lighting impulse withstand voltage (peak)	kV	75/85
4	Rated frequency	Hz	50
5	Rated current	A	63/1250/1600/2000/2500/3150/4000*
6	Rated short circuit breaking current	KA	20 25 31.5 40 50
7	Rated short time withstand current	kA	20 25 31.5 40 50
8	Rated short circuit making current (peak)	kA	50 63 80 100 125
9	Rated peak withstand current	kA	50 63 80 100 125
10	Rated short circuit duration	s	4
11	Secondary circuit power frequency withstand voltage (1min）	kV	2
12	Rated single/back-to-back capacitor bank breaking current	A	630/400(800/400-40kA**)
13	Times of breaking 100% fault-current	Times	50 (30 times at 40kA, 20 times at 50kA)
14	Closing time	ms	35-70
15	Opening time	ms	20-50
16	Mechanical endurance	Times	20000 10000 (50kA)
17	Rated opening/closing operation voltage	V	AC 110/220 DC 110/220
18	Rated voltage of charging motor	V	AC 110/220 DC 110/220
19	Closing bouncing time	ms	≤ 2
20	Opening asynchronism	ms	≤ 2
21	Closing asynchronism	ms	≤ 2
22	Rated operating sequence		O-0.3s-CO-180s-CO O-180s-CO-180s-CO (50kA)