Testing of Transmission and Distribution Lines before Commissioning
Testing of Transmission and Distribution Lines before Commissioning Introduction Before energizing any transmission or distribution line, it is essential to carry out various tests to ensure electrical safety, mechanical integrity and reliable operation. These tests help in detecting faults, improper installation and insulation defects, thereby preventing accidents and equipment damage. Objectives of Line Testing To ensure safety of personnel and equipment To verify correctness of installation To detect insulation and earth faults To ensure reliable power supply Tests Carried Out Before Commissioning 1. Visual Inspection Check alignment of poles/towers Ensure proper sag and tension of conductors Verify condition of insulators and fittings Check danger plates, anti-climbing devices and earthing 2. Continuity Test Purpose: To ensure conductor continuity throughout the line. Method: Continuity tester or multimeter is used Confirms no open circuit or broken conductor 3. Insulation Res...