Medium Voltage VS1 Indoor 11kV Vacuum Circuit Breaker
Basic Info
Model No.: VD4 vacuum circuit breaker
Product Description
General Description VS1-12 (ZN63A) type indoor medium voltage vacuum circuit breaker is used as protection and control unit of three-phase AC indoor medium voltage Switchgear and industrial and mining enterprise power device of 50Hz and rated voltage up to 7.2~24kV. This products comply with IEC60694, IEC62271-100. Our advantage 
Dimension 
Technical data 
No. | Description | Unit | Data | ||||
1 | Rated voltage | kV | 12 | ||||
2 | Rated insulation levels | Rated power frequency withstand voltage/1min ( phase to phase, phase to earth, open contacts) |
kV | 42 | |||
| Rated lighting impulse withstand voltage (phase to phase, phase to earth, open contacts) | 75 | ||||||
3 | Rated frequency | Hz | 50 | ||||
4 | Rated current |
A | 630 | 630 | 1250 | 1600 | |
1250 | 1250 | 1600 | 2000 | ||||
|
| 2000 | 2500 | ||||
|
| 2500 | 3150 | ||||
|
|
| 4000 | ||||
5 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 | |
6 | Rated short time withstand current(4s) | kA | 20 | 25 | 31.5 | 40 | |
7 | Rated short circuit making current | kA | 50 | 63 | 80 | 100 | |
8 | Rated peak value of withstand current | kA | 50 | 63 | 80 | 100 | |
9 | Rated operating sequence |
| O-0.3s-CO-180s-CO O-180s-CO-180s-CO | ||||
10 | Rated short circuit breaking current breaking times | times | 30/20(40kA) | ||||
11 | Rated cable charge breaking current | A | 25 | ||||
12 | Rated single capacitor bank breaking current | A | 630/400(40kA) | ||||
13 | Rated back to back capacitor bank breaking current |
| 400 | ||||
14 | Mechanical life | times | 10000 | ||||
16 | Allowed abrade cumulative thickness of moving and static contactor | mm | 3 | ||||
17 | Clearance between open contacts | mm | 11±1 | ||||
18 | Contact stroke | mm | 3.5±0.5 | ||||
19 | Bounce duration of contact closing | ms | ≤2 | ||||
20 | Non-simultaneity of three phase for opening and closing | ms | ≤2 | ||||
Certifications 
Our workshop 
Testing equiment 
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