VIB-12 AC 50Hz Indoor High Voltage Vacuum Circuit Breaker Switch

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Withdrawable & Fixed
• Structure: ACB
• Model NO.: VIB-12/1250-31.5
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection
• Certification: VDE, ISO9001-2000, CE, CB, CCC
• Rated Voltage: 12kv
• Rated Frequency: AC 50Hz
• Industry Standard: M2-E2-C2
• Transport Package: Each One Is Wrapped with Plastic Film in Cartons.
• Specification: IEC: M2-E2-C2
• Trademark: Longxiang Electric
• Origin: Baoji, Shaanxi China
• HS Code: 85389000
• Production Capacity: 16000sets/Year

Product Description

VIB-12 Indoor High Voltage Vacuum Circuit Breaker

General Description
Explation of Product type: VIB  -     12
Vacuum Circuit Breaker series        Rated voltage(kV)
of Longxiang Electrical Co.,Ltd.

Main usage,applying ambient conditions
VIB type indoor high voltage vacuum circuit breaker(Hereinafter referred to as vacuum circuit breaker)are used for 12kv rated voltage  and AC 50Hz indoor switch equipment components.The products meet standard of GB1984-2003HV AC Vacuum Circuit Breaker,
JB3855-1996 3.6~40.5kV Indoor AC High Votage Vacuum Circuit Breaker, DL/T403-2000 Order Technical Condition of 12kV~40.5kV
Vacuum Circuit Breaker and IEC62271-100:2001HV AC Vacuum Circuit Breaker,etc.

Circuit breaker used as protection and control unit of power design in electric network and industrial and minning enterprises, can be used for situation of switching various types of load and frequent operation and repeated breaking shor circuit current.

This type VCB uses new type operating mechanism of VCB.Embed vacuum interrupter and main circuit's components as a integration  by adopting embedded pole of international brand for primary part,so as to protect vacuum interrupter from crash,dust and moist. It has good environment adaptability, so that reducing operation and maintenance cost greatly and realizing maintenance free of primary part  and few maintenance of operating mechanism. The integrated design of operating mechanism and VCB body has passed type test. It has E2 level electrical endurance and M2 level mechanical endurance,used as fixed unit and also withdrawable unit by matching specialized
push-in mechanism.The fixed type VCB can add corresponding interlock for matching fixed type switchgear of XGN2,GG1A and GGX type.


Applying ambient conditions
1.Ambient temperature:Max. Temperature:40ºC,and average temperature within 24h should no more than35ºC  
2.Relative humidity:The average relative humidity daily:≤95%
                               The average relative humidity monthly:≤90%
                               The average vapour pressure daily:≤2.2kPa
                               The average vapour pressure monthly:≤1.8kPa
3.The height above sea level:≤2000m
4.Earthquake intensity:not exceed 8 degrees.
5.It should be installed in the place without fire,chemical erosion,explosion,vapour and salt spray.

Technical parameter

S.N	Name	Unit	Data
1	Rated voltage	kV	12
2	Rated frequency	Hz	50
3	1min power frequency withstand voltage	kV	42
4	Rated lighting impulse withstand voltage	kV	75
5	Rated current	A	630	1250	1600	2000	2500	3150	4000
6	Rated short circuit breaking current Rated thermal stability current(virtual value)	kA	20
			25	25
			31.5	31.5	31.5	31.5	31.5
				40	40	40	40	40	40
									50
7	Rated short circuit making current(peak) Rated dynamic stable current(peak)	kA	50
			63	63
			80	80	80	80	80
				100	100	100	100	100	100
									125
8	Switching operations of short circuit breaking current	Cycle	30,50
9	Rated thermal stable duration	s	4
10	Rated operating sequence		O-0.3s-CO-180s-CO
11	Mechanical endurance	Cycle	30000
12	Rated breaking current of single capacitor bank	A	630
13	Rated breaking current of back to back capacitor bank	A	400

Outline drawing and installation dimension


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