Beijing Huadong Electric Co., Ltd.
Main products:High Voltage Products,Low Voltage Products,Medium Voltage Products,Vacuum Circuit,Switchgear
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  • Contact Person : Ms. Wang Grace
  • Company Name : Beijing Huadong Electric Co., Ltd.
  • Tel : 0086-10-67668022
  • Fax : 0086-10-87697121
  • Address : Beijing,Beijing,Room 408, B unit, No.1 building, No.16, Ronghua South Road, Beijing Economy technologyl developed area,Beijing.
  • Country/Region : China

VH4 series 24KV Vacuum circuit breaking

VH4 series 24KV Vacuum circuit breaking
Product Detailed
VH4 series VCB is make in accordance with relevant GBand IEC standards.it can be used for power grid and industrial enterprises.

VH4 Series vacuum circuit breaker is a kind of indoor switchgear used in electric power system. It works as protection and control unit for power grid equipment and power equipment in industrial and mining enterprises. It is a new generation of high quality vacuum circuit breaker developed by Beijing Huadong Electric Co.,Ltd. specifically for nuclear power projects. Main circuit of the circuit breaker may adopt fixed sealing type arc quenching chamber pole(pole that adopts special technique to envelop vacuum arc quenching chamber and conductive connecting piece using epoxy resin)made by Siemens, and may also adopt open type arc quenching chamber pole made by our company. Its mechanism adopts long life and high reliable modular spring operating mechanism made by our company.

Model VH4-EP circuit breaker is one of our company's Model VH4 series of high voltage vacuum circuit breakers. Its main circuit adopts fixed sealing type vacuum arc quenching chamber imported from Geman Siemens in original package. Arc quenching chamber and conductive connecting rod etc parts are cast into pole using epoxy resin by means of special technique, which reduces assembly link, increases mechanical reliability greatly. at the same time, increases external creepage distance, and guarantees the high reliabilities of electric performance in all kinds of harsh environments.

Technical Parameters of VH4 24KV VCB 

Serial No.

Items

Unit

Technical Data

1

Rated Voltage

KV

24

2

Rated Frequency

HZ

50/60

3

Rated Insulation Level

1 min Rated Power Frequency withstand Voltage  

KV

65

Rated Lightning Pulse withstand Voltage

KV

125

4

Rated Current

A

630

1250

1600

2000

2500

5

Rated Short Circuit Breaking Current

Rated Short time Withstand Current (4s)

KA

 

20

20

25

25

25

31.5

31.5

31.5

6

Rated Short Circuit Makeup current (peak)

Rated Peak Withstand Current

KA

50

80

80

80

80

63

80

80

80

80

7

Rated Short Circuit Current Breaking Times

Times

 20

8

Operation squence

0-0.3s-CO-180s-CO

9

Closing Time

ms

50±15

10

Opening Time

ms

40±15

11

Energy Storage time

s

≤15

12

Mechanical Life

Times

10000

13

Rated Power of Energy Storage Motor

W

200

14

Rated Voltage of Energy Storage Motor

V

--110           --220

15

Rated Voltage of Opening and Closing Electromagnet

-110   -220

16

Rated Current of Opening and Closing Electromagnet

A

DCO.91  DCO.89

17

Rated Current of Over current Trip Device

A

5

18

Rated Current of Auxiliary switch

A

AC10,   DC5

          

VH4 series 24KV Vacuum circuit breaking



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