VIB-12kv 2000A 31.5ka Medium Voltage Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Speed: Normal Type Circuit Breaker
• Model NO.: VIB-12/2000-31.5
• Arc-extinguishing Medium: Vacuum
• Installation: Withdrawable
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: VDE, ISO9001-2000, CE, CB, CCC
• Rated Voltage: 12kv
• Installation Type: Fixed & Withdrawable
• IEC: M2-E2-C2
• Transport Package: Non-Solid Wooden Case
• Specification: IEC: M2-E2-C2
• Trademark: Longxiang Electric
• Origin: Baoji, Shaanxi China
• HS Code: 8538900000
• Production Capacity: 17600sets/Year

Product Description

VIB 12KV 2000A 31.5KA Medium Voltage Vacuum Circuit Breaker


General Description
In order to meet the market requirements for high quality VCB as well as their adaptation with its switchgear, our company develops this new  generation of  VIB type indoor high voltage vacuum circuit breaker.It is three-phase AC,50Hz indoor power distribution equipment with the voltage  of 12kV. It can be used for protecting and controling equipments in the fileds of power supply and distribution system  such as substation and  industrial and mining industry etc.

VIB series vacuum circuit breaker has taken into consideration of reliable interlock function which can be frequently operated at the rated current 
and with the capability of many times operations of breaking short-circuit current and fault current. It can be used for fixed installation unit and  also can be used for independent track by equipped with Chassis.


Product Standard
VIB type vacuum circuit breaker conforms to national standard GB1984-2003HV Vacuum circuit Breaker,
DL/T403-2000 Order technical condition of 12kV~40.5kV Vacuum Circuit Breaker and 
some stipulation of IEC62271-100:2001HV AC Vacuum Circuit Breaker.


Technical characteristics
The vacuum interrupters of VIB type vacuum circuit breaker are used embedded poles by advance APG technology; the primary conducting part is capsulated into an integrated unit by using epoxy resin which makes the insulation condition of primary conducting parts against from impact by 
exterior enviroment,it can effectively prevent moisture,filths and the damage to the insulation property due to condensed water.

The vacuum interrupter is vertically installed in an insulation house which is made up of epoxy resin cast by advanced APG technology; this kind of  structure can maximally reduce the dust accumulation on the surface of vacuum interrupters which ensure the high resitance state even if under 
the damp, hot and serious filthy enviroment.

The VIB type vacuum circuit breaker uses specialized vacuum interrupter with advanced material and design for their contact, it is with strong 
breaking capability and high reliability and performed the type test for its electrical life under the condition of autore-close at class E2 level (the breaking operations reaches 274 times for different shor-circuit currents) as per national standard, it is more accordance with the actural
usage requirement and realized free of maintenance for its primary part.


Main Technical Specification

S.N	Name	Unit	Data
1	Rated voltage	kV	12
2	Rated current	A	630		1250				1600 2000 2500 3150
3	Rated short circuit breaking current	kA	20	25	20	25	31.5	40	31.5	40
4	Rated peak withstand current	kA	50	63	50	63	80	100	80	100
5	Rated short time withstand current	kA	20	25	20	25	31.5	40	31.5	40
6	Rated short circuit making current	kA	50	63	50	63	80	100	80	100
7	Switching operations of short circuit current	Cycle	50							30
8	Rated operating sequence		O-0.3s-CO-180s-CO,O-180s-CO-180s-CO(40kA)
9	Mechanical endurance	Cycle	30000
10	Rated breaking operations of rated current	Cycle	20000
11	Rated lighting impulse withstand voltage	kV	75
12	Rated power frequency withstand voltage	kV	42
13	Contact stroke	mm	9±1
14	Overtravel of contacts	mm	3.5±0.5
15	Closing speed	m/s	0.4±0.8
16	Main circuit resistance of each pole	μΩ	≤40		≤45				≤40	≤35
17	Opening speed	m/s	0.9~1.3
18	Contact bouncing duration at closing operation	ms	≤2
19	Simultaneity of three phase closing and opening	ms	≤2
20	Closing time	ms	35~70
21	Opening time	ms	20~50
22	Distance between phases	mm	150,210,275
23	DC component		50%

 




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  Packaging&Delivery.                                                                             

Packaging details	Each one is wrapped with plastic film in non-solid wooden case.
Delivery details	Within 15 days from the date of receiving signed sales confirmation by both parties.

 

   



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