Relays for Transmission & Distribution Lines protection:
| No | Line | Protection |
| 1 | 400 KV Transmission Line | Main-I: Non switched or Numerical Distance Scheme |
| Main-II: Non switched or Numerical Distance Scheme | ||
| 2 | 220 KV Transmission Line | Main-I : Non switched distance scheme (Fed from Bus PTs) |
| Main-II: Switched distance scheme (Fed from line CVTs) With a changeover facility from bus PT to line CVT and vice-versa | ||
| 3 | 132 KV Transmission Line | Main Protection: Switched distance scheme (fed from bus PT). |
| Backup Protection: 3 Nos. directional IDMT O/L Relays and 1 No. Directional IDMT E/L relay. |
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| 4 | 33 KV Lines | Non-directional IDMT 3 Over Current and 1 Earth Fault relays |
| 5 | 11KV Line | Non-directional IDMT 2 Over Current and 1 Earth Fault relays |
Nice information
excellent job
Other Voltages?
What about other Voltage levels?
Thanks
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