ZN63(VS1)-12
Indoor High Voltage Handcart Vacuum Circuit Breaker
ZN63VS1-12 indoor high voltage Handcart vacuum circuit breaker is applied to 12KV,three-phase, AC50Hz. It can provide control and protection for industrial and mining enterprises, power plants and substations, and electrical facilities, and is suitable for frequent operation. The operating mechanism is integrated with the circuit breaker and the design can be used as a fixed installation unit.It can also be a special propulsion mechanism to form a handcart unit. The main loop adopts the integral solid pole to realize the miniaturization, high reliability, and fre-maintenance of the circuit breaker. It can be used in KYN28A-12 (GZS) and other center-mounted handcart switchgear.The fixed type could also be used in the XGN series fixed switchgear.
Item | Description | Unit | Data |
1 | Rated voltage | KV | 12 |
2 | Max. voltage | KV | 12 |
3 | Rated current | A | 630/1250/2500 |
4 | Rated short circuit breaking current | KA | 20/25/31.5 |
5 | Rated short circuit making current | KA | 50/63/80 |
6 | Rated peak withstand current | KA | 50/63/80 |
7 | 4S Rated withstand current | KA | 20/25/31.5 |
8 |
Rated insulation level
| Power frequency voltage(when losing a circuit) | KV | Dreaker 65 |
Impulse withstand voltage(when losing a circuit) | Dreaker 125 |
9 | Rated operating sequence |
| OC-0.3s-CO-180S-CO |
10 | Mechanical life | Times | 20000 |
11 | Rated short circuit current breaking time | Times | 274 |
12 | Rated close brake voltage of operating machnie | V | 110,220 |
13 | Rated break brake voltage of operating machnie | V | 110,220 |
14 | Contact stroke | mm | 13±1 |
15 | Exceed range(the compress length of contact sping) | mm | 3.5±0.5 |
16 | Different period of three-phase break and close break | ms | ≤2 |
17 | The jump time of contact close break | ms | ≤2 |
18 | Average break speed | m/s | 1.1~1.7 |
19 | Average closing speed | m/s | 0.6~1.1 |
20 |
Opening time
| Ubder max.operating voltage | S | ≤0.05 |
Under min.operating voltage | ≤0.08 |
21 | Closing time | s | 0.1 |
22 | Resistance of each phase main loop | μΩ | 630≤50 1250≤45/ 1600-2500≤40 |
23 | Contacts limit ersion | mm | 3 |
Russian