12kv Medium Voltage Vcb 630A-5000A Fixed Type Vacuum Circuit Breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: VS1-12
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000
• Rated Voltage: 12kv
• Rated Current: 630A-5000A
• Application: Indoor Switchgear
• Spring Operating Mechanism: Vs1 Type
• Arc-Extinguishing: Vacuum
• Pole Distance: 150/210/275mm
• Transport Package: Standard Export Packaging
• Trademark: Liyond
• Origin: China
• Production Capacity: 10000 Set/Month

Product Description

"Vacuum circuit breaker" is named after its interrupting medium and the insulation medium of the contact gap after interrupting is high vacuum; it 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. The vacuum circuit breaker is an indoor power distribution device in 3~10kV, 50Hz three-phase AC system, which can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants and substations, and is especially suitable for use in places requiring oil-free, less maintenance and frequent operation, and the circuit breaker can be configured in middle cabinets, double cabinets and fixed cabinets for control and protection of high-voltage electrical equipment.
 

Model VS1 series of circuit breakers assembly are mainly used in the rated voltage12-24kv, the rated short circuit breaking current 20 and 50KA, and the rated current 630-5000A for the power distribution users.

The mechanical endurance is 20000 operating and 50 operating full capacity breaking ability at small current. It is suitable for the application with frequent operation and it features free of maintenance and few service.It could be used with Model KYN28A(GZS1) metal-enclosed switchgear and other fixed cabinet or handcart cabinet.

Technical parameters :

 

No.	Name	Unit	Data
1	Rated voltage	kV	12
2	Rated current	A	630		1000 1250			1600 2000 2500 3150
3	Rated short circuit breaking current	kA	20	25	20	25	31.5	31.5	40
4	Rated peak withstand current	kA	50	63	50	63	80	80	100
5	Rated short time withstand current	kA	20	25	20	25	31.5	31.5	40
6	Rated short circuit making current	kA	50	63	50	63	80	80	100
7	Switching operations of short circuit current	times	50
8	Rated operating sequence		O-0.3s-CO-180s-CO-180s-CO(40KA)
9	Mechanical endurance	times	10000
10	Rated breaking operations of the rated current	times	20000
11	Rated lighting impulse withstand voltage(full wave)	kV	75
12	1 min. rated power frequency withstand voltage	kV	42
13	Contact stroke	mm	9±1
14	Over-travel of contacts	mm	3.5±0.5
15	Closing speed	m/s	0.4∼0.8
16	Opening speed	m/s	0.9∼1.2
17	Contact bouncing duration at closing operation	ms	≤2
18	Simultaneity of three phase closing operation	ms	≤2
19	Closing time	ms	30∼70
20	Opening time	m/s	20∼50
21	Distance between phases	mm	150, 210, 275
22	D.C component		50%

 

Note: 

1. No.11&12 are provided when needed.

2. Switchgear should be with cold wind when the rated current is 4000A.

 

Ambient condition

1.Ambient temperature:-10ºC-+40ºC
2.Relative 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.
5.The height above sea level:≤1000 m (Except special requirements)
6.It should be installed in the places without fire, explosion, serious filth, and chemical erosion and violent vibration.