Vb85-36kv Draw-out Type Indoor Vacuum Circuit Breaker Vcb

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: VB85
• 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: VDE, ISO9001-2000
• Rated Frequency: 50/60 Hz
• Warranty: 1 Years
• Rated Currrent: 630-4000A
• Transport Package: Wooden
• Trademark: Chenghe
• Origin: Wenzhou China
• Production Capacity: 4000 Sets/Year

Product Description

Product Description
General
VB85 high-voltage indoor vacuum circuit breaker is applicable for three-phase AC power system of rated voltage up to 36kV 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 rated current or multi-breaking short circuit current, may be mounted in the indoor air insulating switchgear like type KYN61 or AMS, series, etc.
This circuit breaker is made with mature APG technology. The application of VB85 terminal buffer guarantees the indoor terminal is ever more reliable in nay operation environment. VB85 can fully meet the requirement of GB, DL, IEC, DIN, VDE as well as standards of other advanced industrial countries.
Service environment
Air temperature: Maximum temperature: +40ºC; Minimum temperature:-25ºC
Humidity: Monthly average humidity 95%; Daily average humidity 90% .
Altitude above sea level: Maximum installation altitude: 2500m
Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
No frequent violent shake
Main technical specifications

No	Item	Unit	Parameter
1	Rated voltage	kV	33/35/40.5kV
2	Rated frequency	Hz	50/60
3	Rated current	A	630, ...2500A
4	1min Power frequency withstand voltage	kV	95	118
5	Lightning impulse withstand voltage	kV	185	215
6	Rated short circuit breaking current (peak)	kA	50/63/80
7	Rated short breaking current	kA	20, …31.5
8	Rated short circuit making current (peak)	kA	50/63/80
9	Rated cable(line) charging breaking current	A	50 and 10
10	Rated single capacitor bank switching current	A	400
11	Rated withstand current (peak)	kA	50/63/80
12	Short time withstand current (4s)	kA	20, …31.5
13	Mechanism life	times	10000

Note: For short circuit breaking current & rated current is optional by clients.

Advanced techniques and capabilities
The circuit-breaker VB85-36 is 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 VB85-36 has complete type specifications:
the rated voltage is 36kV, the rated current is up to 2500A and the rated short circuit breaking current is up to 31.5kA.
The circuit-breaker VB85-36 is equipped with modularized spring operating mechanism which has characteristic of more convenient maintenance, rapider replacing of parts and more reliable performance.
The circuit-breaker VB85-36 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 VB85-36 have 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 VB85-36 has perfect performance when it is breaking short-circuit current or being operated frequently.
Beside that it also has the functions of automatic reclosing and reliable operating.
The driving mechanisms of circuit-breaker VB85-36 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 VB85-36 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 VB85-36 has been through the whole type test in accordance with the standards of GB and IEC.