10kv 2500A Embedded Poles Type Medium Voltage Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Model NO.: VS1-12/2500-275
• 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: 2500A
• Application: Indoor Switchgear
• Spring Operating Mechanism: Vs1 Type
• Arc-Extinguishing: Vacuum
• Pole Distance: 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.
 

VS1-12 series indoor vacuum circuit breakers are suitable for switching various loads of different nature and frequent operations in the three-phase AC 50Hz, 10KV power system. It can be used for the protection of electrical equipment in industrial and mining, enterprises, power plants and substations. It can be equipped with KYN-12 (GZS1) and other middle-mounted handcart switch cabinets, and can also be equipped with XGN-fixed switch cabinets.

 

This product complies with the national standards GB1984 "AC High Voltage Short Circuit Breaker", JB3835 "3.6-40.5KV Indoor AC High Voltage Vacuum Circuit Breaker" and IEC60056 "High Voltage AC Circuit Breaker" standards. Meet DL/T403 "12-40.5KV indoor high voltage circuit breaker ordering technical conditions"
 

Structure

1. The arc extinguishing chamber of the circuit breaker is installed in the front and rear configuration of the operating mechanism, which is connected as a whole through the transmission mechanism to ensure the overall coordination performance of the circuit breaker.
 

2. The use of a middle-sealed ceramic vacuum interrupter, the copper contact material and the longitudinal magnetic field contact structure are the most advanced arc extinguishing methods recognized in the world today.
 

3. The vacuum interrupter is installed in the insulating cylinder formed by APG's new art, which not only reduces the overall size of the circuit breaker, but also prevents damage and surface contamination of the arc extinguishing by foreign matter.
 

4. On the basis of drawing on the advantages of similar foreign products, the insulating cylinder is equipped with inner skirts and reinforcing ribs to improve the insulation level and the ability to resist dynamic and stable current.
 

5. The operating mechanism adopts the spring energy storage type, which has two functions of electric and manual energy storage. When the circuit breaker is working, the energy of the stored energy spring is transmitted to the linkage mechanism through the output cam, and then transmitted to the movable contact through the linkage mechanism.
 

6. Advanced and reasonable buffer device, no rebound when opening, weaken the shock and vibration of opening.
 

7. No need to adjust, little or no maintenance.
 

Technical parameters :

No.	Item		Unit	Data
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated insulation level	1min power frequency withstand voltage	KV	42
		Rated lightning impulse withstand voltage	KV	75
4	Rated current		A	630	1000	1250	1600	2000	2500	3150	4000
5	Rated short-circuit breaking current   Rated short-time withstand current (virtual value)		kA	20	20	20
				25	25	25	25
					31.5	31.5	31.5	31.5	31.5
						40	40	40	40	40	40
											50
6	Rated short circuit making current Dynamic stability rated current		kA	50	50	50
				63	63	63	63
					80	80	80	80	80
						100	100	100	100	100	100
											125
7	Rated short-circuit breaking current breaking time		times	(above 40KA)
8	Rated short-circuit duration		S	4
9	Rated operation sequence			O-0. 3s-CO-180s-CO,O-180s-CO-180s-CO(above 40kA)
10	Mechanical life		times	30000
11	Rated breaking current of single capacitor bank		A	630
12	Rated breaking current of back   to back capacitor bank		A	400
13	Maximum D.C componen                   5 0 %

 

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.
4.The height above sea level:≤1000 m (Except special requirements)
5.It should be installed in the places without fire, explosion, serious filth, and chemical erosion and violent vibration.