 Model Number |
VH4 indoor high voltage vacuum circuit breaker |
Detailed Selling Lead Description
| Item |
Name |
Unit |
Data |
| 1 |
Rated Voltage |
KV |
12/24/40.5 |
| 2 |
Rated Frequency |
HZ |
50/60 |
| 3 |
Rated Insulation level |
Power Frequency Withstand Voltage in 1 Min |
KV |
42/65 |
| Lighting Impulse Withstand Voltage |
75125 |
| 4 |
Rated Current |
A |
630
1250 |
1600
2000 |
2500 |
3150 |
| 5 |
Rated Short-Circuit Interrupting Current |
KA |
20 |
25 |
31.5 |
40 |
| 6 |
Rated Short Circuit Closing Current (peak)
|
KA |
50 |
63 |
80 |
100 |
| 7 |
Rated Peak Withstand Current |
KA |
50 |
63 |
80 |
100 |
| 8 |
Rated Short-time Withstand Current(4S) |
KA |
20 |
25 |
31.5 |
40 |
| 9 |
Number or Openings at Rated Short-Circuit Current |
Times |
50 |
30 |
| 10 |
Rated Short Circuit Duration |
s |
4 |
| 11 |
Rated Operating Sequence |
|
O-0.3s-C/O-180s-C/O |
| 12 |
Mechanical Service Life |
Times |
30000 10000(40KA) |
| 13 |
Rated Interrupting Current for a Single Capacitor Group |
A |
630 |
| 14 |
Rated Interrupting Current for back-to-back Capacitor Group |
400 |
VH4 series vacuum circuit breaker is a kind of indoor switchgear used in electric power system . lt works as protection and control unit for power grid equipment and power equipment in industrial and mining enterprises . lt is a new generation of high quality vacuum circuit breaker developed by Beijing Huadong Senyuan 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 .lts mechanism adopts long life and high reliable modular spring operating mechanism made by our company .
Model VH4-EP circuit breaker is one of our companys Model VH4 series of high voltage vacuum circuit breakers .lts main circuit adopts fixed sealing type vacuum arc quenching chamber imported from German Siemens in original package . Arc quenching chamber and conductive connecting rod etc parts ate 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 dis tance ,and guarantees the high reliabilities of electric performance in all kinds of harsh environments .
Beijing Huadong Simbo Co., Ltd.
Addr.:No.69 Longzhaoshu Nanli,
ChaoYang Dist., Beijing, China
Tel: +86-10-87694425
Fax: +86-10-87697121
Comtact:Ruomey
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