These tap changer used for the three-phase pad-mounded transformer with the frequency of 50HZ、60HZ,the rated voltage of 10-35KV,the rated current of 63-250A,operation under the non-energized condition.
Technical date:
| Specifications | W5L63 | WSL 125 | WSL250 |
| Phase number | Three phase | ||
| Connection type | Delta | ||
| Rated voltage | 10KV | 20KV | 35KV |
| Rated current | 63A | 125A | 250A |
| Position number | 3-5 | ||