General
VB4 medium-voltage indoor vacuum circuit breaker 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 rated current 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 12-40.5Kv 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. VB4 can fully meet the requirement of GB, DL, IEC, DIN, VDE as well as standards of other advanced industrial countries.
Service environment
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
Detail
| No |
Item |
Unit |
Parameter |
| 1 |
Rated voltage |
KV |
12/17.5 |
24 |
36 |
| 2 |
Rated frequency |
Hz |
50/60 |
| 3 |
Rated current |
A |
630,4000A |
630,2500A |
| 4 |
1min Power frequency withstand voltage |
KV |
48 |
65 |
85 |
| 5 |
Light impulse withstand voltage |
KV |
75/95 |
125/150 |
170/185 |
| 6 |
Rated short circuit breaking current (peak) |
KA |
50/63/80/100 |
| 7 |
Rated active load and close circuit breaking current |
A |
63 |
50 |
50 |
| 8 |
Rated short breaking current |
KA |
20,40 |
| 9 |
Rated short circuit making current (peak) |
KA |
50/63/80/100 |
| 10 |
Rated cable(line) charging breaking current |
A |
50 and 100 |
| 11 |
Rated single capacitor bank switching current |
A |
400/600 |
| 12 |
Rated withstand current (peak) |
KA |
50/63/80/100 |
| 13 |
Short time withstand current (4s) |
KA |
20,40 |
| 14 |
Mechanism life |
times |
10000 |
Certification
Packing & Deliver
About us
Founded in 1996, with a registered capital of 10 million USD, Zhejiang Farady Electric enjoys about 20 years' experience in MV transmission and distribution electrical equipment manufacture.
We are National Hi-tech enterprise, National Spark plan Program,State Hi-tech enterprise, State Innovation R&D center, Patent demonstrate company.
Farady is located in Liushi of Yueqing, Zhejiang,China,main products include: Transformer/RMU/switchgear/AVR/ACR and MV indoor and outdoor switch. All the products of ours have passed the national and international laboratory type test, Farady Electric was qualified supplier of China State Grid and China southern Grid.
With ISO9001/14001/18001, we are strike for create value for our partner and customer.
There is more than 20 distributors and agents worldwide already trust us and distribute Farady product there, we are not only export product, but also provide whole technology solution to help partner to establish local factory in our business line.
Today, boasting the value of products specialization, brand management, and business globalization, with the sprits of pragmatism, innovation, efficiency, and responsibility, Farady Company is dedicated to become the top name in the international business from china, and contributes its share to the transformation from the Made in China into the Invented in China.
Zhejiang Farady Powertech Co.,Ltd
TEL:0086-0577-61512688
Fax:0086-0577-61510628
Http:// faradypowertech.en.made-in-china.com
Add: N.O.278,Wei 7 Rd,Yueqing Economic development Zone,Liushi,Yueqing,Zhejiang,P.R.China, 325600
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