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VS1-12 11kV 12kV Indoor High Voltage 800A-3150A Vacuum Circuit Breaker VCB

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Short Description:

VS1-12 series of indoor vacuum circuit breaker with common insulated cylinder is three-phrase A.C. 50 Hz indoor power distribution equipment with the rated voltage of 12KV. 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(GZS1). This series of products include: VCB truck isolation truck and Fuse truck, etc.

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Product Description

Model meaning

Model:VS8-□/□

V	S	8	□	□
Rated Voltage	Rated current	Design code	Vacuum circuit breaker	Company code

Service conditions

Normal service conditions of switchgear as follows:
Ambient temperature:
Maximum	+40°C
Maximum 24 hour average	+35°C
Minimum (according to minus 15 indoor classes)	-10°C
Ambient humidity:
Daily average relative humidity	less than 95%
Monthly average relative humidity	less than 90%
Earthquake intensity	less than 8 degree
Height above sea level	less than 1000m
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

This product should not be used under conditions of fire, explosion, earthquake and chemical corrosion environments. Product parameters

NO	Item	Units	Technical parameters
1	Rated voltage	KV	12
2	Rated short-duration power frequency withstand voltage		42/48(Interphase, ground/fracture)
3	Rated lightning impulse withstand voltage		42/48(Interphase, ground/fracture)
4	Rated frequency	Hz	50
5	Rated current	A	630 1250	630 1250 1600 2000 2500 3150	630 1250 1600 2000 2500 3150
6	Rated short-circuit breaking current	KA	20/25	31.5	40
7	Rated short-time withstand voltage		20/25	31.5	40
8	Rated short circuit duration	S	4
9	Rated peak withstand current	KA	50/63	80	100
10	Rated short circuit closing current		50/63	80	100
11	Secondary circuit power frequency withstand voltage (1min)		2000
12	Rated single / back to back capacitor group breaking current	A	630/400(40kA:800/400)
13	Rated capacitor bank closing current		12.5 (frequency is not greater than)
14	Mechanical life	KA	20000
15	Rated current breaking times (electrical life)		20000
16	Rated short circuit current breaking times	times	50(40KA≤30)
17	Dynamic and static contacts allow wear cumulative thickness	mm	3
18	Energy storage time	s	≤10
19	Contact opening distance	mm	11±1
20	Overtravel		3.5±0.5
21	Contact closing bounce time	ms	≤2(40KA≤3)
22	Three-phase split/closed period		≤2
23	Average opening speed (contacts are separated by -8mm)	m/s	1.2±0.2
24	Main conductive loop resistance		0.6±0.2
25	Main conductive loop resistance	μΩ	≤50(630A)≤45(1250A) ≤40 (1600,2000A)≤35 (2500A or more)
26	Rated operation sequence		0-0.3s-Co-180s-Co

NO.	Items			Unit	Value
1	Rated voltage			KV	40.5
2	Rated Current			A	1600		2000
3	Rated short circuit breaking current			KA	20	25	31.5
4	Rated short-circuit current (peak)				50	63	80
5	Rated short (heat stable) current				20	25	31.5
6	Rated peak withstand (dynamic stability) current				50	63	80
7	Rated short circuit duration			S	4
8	Rated insulation level	1 min power frequency withstand voltage	Dry	KV	95
			Wet		80
		Lightning impulse withstand voltage (peak)			185
9	Rated operating sequence			Times	20
10	Rated short-circuit current breaking times			ms	≤80
11	Full-time off (with spring operating mechanism)				o-0.3s-co-180s-co
12	Mechanical life				10000
13	Ratod operating voltago				AC110,220;DC110,220
14	Contact opening distance				20
15	Contact overtravel				5±1
16	Bounce time				≤5
17	DC resistance per phase circuit				≤120
18	Circuit Breaker Dimensions (L x W x H)				2460x2400x500
19	Circuit breaker with a total mass of body				1100

Main features:

1.Mechanical and electrical durability During rated current, breaking times can reach to 10000, 20000 During rated short-circuit current, breaking times can reach to 20, 30 and 50 times. 2. The circuit breaker has complete functions. It is used to switch on/off various loads as specified by DL standards, such as method 1-5, capacitor, out-of-phase conditions. 3. Easy maintenance Normally, it just needs to clean the operating mechanism and add lubricants. 4.Vertical insulating tube Protect it from various environmental impacts. 5.With complete product portfolio Rated current from 630A to 5000A Rated short-circuit current form 20kA to 50kA 6.It has the features of series, strong versatility, convenient use and easy maintenance. All products have passed 100 running-in tests according to reliability principle in the factory before delivery, so as to ensure the reliability.

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