Overview
Environmentally Friendly Vacuum Circuit Breaker: Semi-solid-insulated and fully solid-insulated configurations are available. The switchgear can be configured with an upper disconnector, upper earthing switch, and lower vacuum circuit breaker, or with a lower disconnector, lower earthing switch, and upper vacuum circuit breaker, according to customer requirements, State Grid requirements, project specifications, and local utility requirements.
Service Conditions
- Maximum ambient air temperature: +40 °C
- Minimum ambient air temperature: −25 °C
- 24-hour average ambient air temperature: ≤ 35 °C
- Relative humidity: Daily average ≤ 95%; monthly average ≤ 90%.
- Altitude: ≤ 1,500 m (standard type, at the standard nitrogen filling pressure).
- For operation outside the specified service conditions, special requirements shall be agreed upon with the manufacturer.
Paramètres techniques
| Article | Vacuum Circuit Breaker(VCB) | Disconnector / Earthing Switch |
| Rated Voltage | 12KV | 12KV |
| Power-frequency Withstand Voltage | 42/48KV | 42/48KV |
| Lightning Impulse Withstand Voltage (BIL) | 75/85KV | 75/85KV |
| Rated Current | 630A | 630A |
| Rated Short-circuit Making Current | 63 | 53 |
| Rated Short-time Withstand Current | 25 | 25 |
| Rated Short-time Duration | 4S | 4S |
| Mechanical Endurance | 10000 | 3000 |
| Gas Pressure | 0.025(20℃) | |
| Annual Leakage Rate | <0.05% | |
| Interruption Medium | Vacuum | |
| Degree of Protection | IP67(Gas Tank)/IP3X(Enclosure) | |
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