VS1-12 2000A Handcart-type Vacuum Circuit Breaker with Fixed Pole
The VS1 indoor Handcart type vacuum circuit breaker is suitable for frequent switching of various types of loads in three-phase AC 50Hz power systems with rated voltages of 7.2kV~40.5kV. It can be used in industrial, mining, enterprise, power plant, and substation electrical equipment protection and control applications. This circuit breaker can be used with KYN28A and other centrally mounted hand-operated switchgear, as well as fixed switchgear. The VS1 indoor high-voltage vacuum circuit breaker conforms to national standards GB1984, JB/T3855, and IEC60056.
Spring-operated mechanism: Enables fast and reliable opening and closing operations while significantly reducing maintenance requirements.
Cart-type structure: Utilizes a retractable design, making installation, maintenance, and replacement more flexible and convenient.
Solid-sealed pole technology: Effectively improves insulation performance and operational reliability, reduces maintenance workload, and extends equipment lifespan.
Compact and robust: Saves installation space while fully ensuring product performance and safe operation.
|
Tech. parameters |
Unit |
Data |
||||
|
20KA |
25KA |
31.5KA |
40KA |
|||
|
Rated voltage |
KV |
12 |
||||
|
Maximum working voltage |
KV |
12 |
||||
|
Rated current |
A |
630-1250 |
630-1250 |
630-2000 |
1250-4000 |
|
|
Rated short circuit breaking current |
KA |
20 |
25 |
31.5 |
40 |
|
|
Rated short circuit making current |
KA |
50 |
63 |
80 |
100 |
|
|
Rated peak withstand current |
KA |
50 |
63 |
80 |
100 |
|
|
4S rated short circuit withstand current |
KA |
20 |
25 |
31.5 |
100 |
|
|
Rated insulation level |
Power-frequency withstand voltage (rated before and after breaking) |
KV |
42(fracture 48) |
|||
|
Lightning impulse withstand voltage (rated before and after breaking) |
75(fracture 84) |
|||||
|
Rated operating sequence |
Break-0.3s-Make and break-180s-Make and break |
|||||
|
Mechanical life |
Times |
20000 |
||||
|
Rated short circuit breaking current breaking times |
Times |
50 |
||||
|
Rated making voltage of operating machinery (DC) |
V |
AC/DC 110/220 |
||||
|
Rated breaking voltage of operating machinery (DC) |
V |
AC/DC 110/220 |
||||
|
Clearance between open contacts |
mm |
11±1 |
||||
|
Overtravel (contact spring compression length) |
mm |
3.5±0.5 |
||||
|
Breaking and making asynchronism of three different phases |
ms |
≤2 |
||||
|
Contact closing bounce time |
ms |
≤2 |
||||
|
Average opening speed |
m/s |
0.9-1.2 |
||||
|
Average closing speed |
m/s |
0.5-0.8 |
||||
|
Breaking time |
ms |
20-60 |
||||
|
Making time |
ms |
≤70 |
||||
|
Main circuit voltage of each phase |
(μΩ) |
630≤50 1250≤45 |
1600-2500≤40 |
3150≤35 |
||
|
Allowable cumulative wear thickness of dynamic and static contacts |
mm |
30 |
||||
Applying Ambient Conditions:
1. Ambient temperature -25°C- +40°C
2. The height above sea level: <1000 m
3. Relative humidity: the average humidity of a day should be no more than 95 %; the average humidity of a month
should be no more than 90%.4. Saturated vapor pressure: the average pressure of a day should be no mare than 2.2kPa; the average pressure ofa month should be no more than1.8KPa.
5. Earthquake intensity: not exceed 8 degrees
6. It should be Installed in the places without fire, explosion, serious filth, and chemical erosion and violent vibration.
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Chennuo Electric Technology Group Co., Ltd
Tel：+86 19303791130
Email：sales@chennuojt.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province, China
