NINGBO TIANAN (GROUP) CO., LTD.
General
VS1-12 (ZN63A) type indoor High voltage vacuum circuit breaker is used as protection and control
unit of three-phase AC indoor High 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.
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 |