The Transmission Company of Nigeria (TCN), Kaduna Region, has successfully carried out live-line maintenance on the Zaria–Funtua 132kV transmission line without disrupting bulk power transmission.
The maintenance exercise, conducted by TCN’s Live-Line Crew from Saturday, July 4 to Tuesday, July 7, 2026, involved the replacement of damaged glass disc insulators on selected transmission towers with a combination of polymer and glass disc insulators to restore the integrity and reliability of the insulation strings.
According to TCN, the affected towers were T14, T17, T40, T63, T78, T175, T177 and T178, each of which had at least five damaged glass disc insulators.
The maintenance was successfully carried out under energised (live-line) conditions, eliminating the need for a planned outage and ensuring the uninterrupted transmission of bulk electricity throughout the exercise.
TCN said the successful completion of the exercise demonstrates its commitment to maintaining a safe, reliable and efficient transmission network through the deployment of modern live-line maintenance techniques.
