Specifications
VHM1 VCB is with modularized design, anti-interference design, compact structure, free maintenance, long-life endurance.
VHM1 ( 12kV) Permanent Magnetic fixed Vacuum Circuit Breaker, Indoor Type
1. Prodcut Overview
1.1.Application:
For the control and protection of substation and equipments; making and breaking short-circuit current under various operating status of electric network.
The VHM1 Permanent Magnet Actuator Vacuum Circuit Breaker passed the national type test with 120 thousand times mechanical life of the CB, marking our company as the first company in the industry to pass this test in China.
The circuit breaker is a newly launched product aiming at middle and high-end market. By using the stable single coil modular magnetic actuator, it is featured with fewer components and high reliability, lowering the starting current effectively and reducing mechanical vibration of the CB so as to extend the electric life significantly.
After it hit the market, the product has acquired recognition from end users. Some of them have already been applied in mines and metallurgy plants.
1.2.Standards: IEC 62271-100
1.3.Parameters: Rated voltage: 12kV.
Rated current: 630A~4000A.
Rated frequence:AC50HZ.
2. Features:
High insulation level and peak withstand current capacity.
Impact and vibration reduced, Less maintenance
Easy operation and installation.
Copact design and reliable interlock.
| Mainly technical parameters | |||
| NO | Item | Units | parameters |
| 1 | Rated voltage | KV | 12 |
| 2 | Rated Frequency | HZ | 50 |
| 3 | Rated Current | A | 630.1250.1600.2000.3150,4000 |
| 4 | Rated short-circuit breaking current | KA | 20 25 31.5 |
| 5 | Rated short-circuit closing current (peak) | KA | 50 63 80 |
| 6 | Rated short-circuit duration | S | 4 |
| 7 | Rated short-circuit breaking current breaking number | nos | 50s |
| 8 | Rated operating sequence | 0-0.3s-CO-180s-CO | |
| 9 | Rated lightning impulse withstand voltage | kv | 125 |
| 10 | 1min power frequency withstand voltage | KV | 65 |
| 11 | Closing time | ms | 50-100 |
| 12 | opening time | ms | 30-60 |
| 13 | Mechanical life | Times | 20000 |
| 14 | Rated Storage and operation voltage | V | AC DC 220/110 |
| 15 | Breaking life | ms | ≤ 80 |
| 16 | Storage life | s | ≤ 10 |
| Adjust the parameters of mechanical properties: | |||
| No | Item | Unit | Parameters |
| 1 | Contact distance | mm | 11±1 |
| 2 | Contact Over-travel | mm | 3.0±0.5 |
| 3 | Closing speed | m/s | 0.5-0.9 |
| 4 | Opening speed | m/s | 0.9-1.3 |
| 5 | Contact closing spring time | ms | ≤2 |
| 6 | Rated contact pressure | N | 20KA(2400±200) 25KA (2400±200) 31.5KA(3100±200) |
| 7 | Three phase closing opening asynchrony | ms | ≤2 |
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