By Stella Odueme
The Transmission Company of Nigeria (TCN) has successfully completed live-line maintenance on the Zaria–Funtua 132kV transmission line without interrupting bulk electricity transmission, reinforcing efforts to improve the reliability of the national grid.
In a statement issued by the General Manager, Public Affairs, Mrs. Ndidi Mbah on Wednesday, the maintenance exercise was carried out by TCN’s Kaduna Region Live-Line Crew between July 4 and July 7, 2026.
The exercise involved replacing damaged glass disc insulators on selected transmission towers with a combination of polymer and glass disc insulators to strengthen the integrity and reliability of the insulation strings.
According to the statement, the affected towers were T14, T17, T40, T63, T78, T175, T177 and T178, each of which had at least five damaged glass disc insulators requiring replacement.
TCN said the maintenance was executed under energized, or live-line, conditions, eliminating the need for a planned outage and ensuring uninterrupted bulk power transmission throughout the operation.
The company noted that the successful completion of the maintenance demonstrates its commitment to maintaining a safe, reliable and efficient transmission network through the deployment of modern live-line maintenance techniques.
