User manual for the VB2 Plus‑15G vacuum circuit breaker covering safety, installation, operation, and maintenance.
This manual provides safety guidelines, technical data, and detailed instructions for the VB2 Plus‑15G vacuum circuit breaker used in indoor switchgear for small‑scale power generation. It includes the breaker’s structure, operating principle, and electrical diagram.
The document also covers installation, commissioning, routine maintenance, transport, storage, and a list of spare parts, with specifications such as rated voltage, current, and mechanical life. This manual is written in Chinese.
| Rated Voltage | 15 kV |
|---|---|
| Rated Current | 1600‑5000 A |
| Rated Frequency | 50/60 Hz |
| Rated Short‑circuit Breaking Current | 31.5‑50 kA |
| Mechanical Life | 10 000 operations |
| Breaking Time | 20‑50 ms |
| Closing Time | 30‑70 ms |
| Average Breaking Speed | 0.9‑1.5 m/s |
| Average Closing Speed | 0.5‑0.9 m/s |