China Indoor Vacuum 12kv 4000A Circuit Breaker

General
VB4 medium-voltage indoor vacuum circuit brea ker is applicable for three-phase AC power system of rated voltage up to 12~ 24kV and frequency 50/60Hz,widely used in many fields such as power plant, transformer substation, petrol chemical industry, metallurgy,manufacturing industry, airport, residential area, etc., to control and protect the electric equipment, especially, It is used for the occasion that needs infrequent operation at ratedcurrent or multi-breaking short circuit current, may be mounted in the indoor air insulating switchgear like type KYN28 or AMS, ABB type ZS1 series, etc. This circuit breaker is standards as GB1984-2003 AC high voltage circuit breaker,JB3855 3.6-40.5Kv indoor AC High voltage circuit breaker, DL/T403 Specification of 12-40.SKv indoor High voltage vacuum circuit breaker for order as well as IEC60694.
This circuit breaker is made with mature APG technology. The application of VB4 terminal buffer guarantees the indoor terminal is ever more reliable in nay operation environment. VB4can fully meet the requirement of GB, DL IEC, DIN, VDE as well as standards of otheradvanced industrial countries.
Main features
1) Simple structure in linear type ,easy in installation and maintation.
2) Adopting advanced world famous brand components in pneumatic parts ,electric parts and operation parts.
3) High pressure double crank to control the die opening and closing.
4) Running in a high automatization and intellectualization,no pollution
5) Apply a linker to connect with the air conveyor ,which can directly inline with filling machine .
Service condition

1.Air temperature: Maximum temperature: +40ºC; Minimum temperature:-25ºC
2.Humidity: Monthly average humidity 95%; Daily average humidity 90% .
3.Altitude above sea level: Maximum installation altitude: 2500m
4.Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
5.No frequent violent shake

Technical data
Advanced technique
The circuit-breaker VB4-12is the newest equipment in the voltage class of 36kV manufactured by Wenzhou Farady Electric Co., Ltd.
It is universal used in power distributing and transforming systems of power stations, power generators, and secondary substations of mines, industries and infrastructures.
The circuit-breaker VB4-12has complete type specifications:
the rated voltage is 12V, the rated current is up to 2500A and the rated short circuit breaking current is up to 31.5kA.
The circuit-breaker VB4-12is equipped with modularized spring operating mechanism which has characteristic of more convenient maintenance, rapider replacing of parts and more reliable performance.
The circuit-breaker VB4-12 adopts embedded poles that the vacuum interrupter with low resistance and the primary main electrical circuit are cast in insulating cylinders by epoxy resin.
This structure makes the breaker have more reliable insulation.
The embedded poles of circuit-breaker VB4-12have the technique of ventilation and convection. Besides, the vacuum interrupter is with low resistance.
All of these reduce the power consumption and the temperature rising due to the longtime running of circuit-breaker.
The circuit-breaker VB4-12has perfect performance when it is breaking short-circuit current or being operated requently.
Beside that it also has the functions of automatic reclosing and reliable operating.
The driving mechanisms of circuit-breaker VB4-12 are designed by professionals in Faradyand with characteristic of reliable closing performance, low impact force and longer lifetime.
The mechanical lifetime can be up to 30000 cycles.
All of the mechanism's surface of circuit-breaker VB4-12 is disposed with special process and lubricative technique.
Not only the rust-resistance capability is improved but also the operating performance is ensured.The circuit-breaker is also applicable to humid and hot regions.
The circuit-breaker VB4-12has been through the whole type test in accordance with the standards of GB and IEC.
Detailed Images

Certification
Packing & Delivery
about us
Zhejiang Farady Powertech Co.,Ltd
TEL:0086-0577-61512688
Fax:0086-0577-61510628
Http:// www.farady.com.cn