TESTING OF WAVE TRAP

1.INSULATION RESISTANCE MEASUREMENT OF COIL:

It is necessary to check the coil of wave trap unit for insulation resistance from earth. It is checked by motorized megger at 5 KV. Its IR value should be greater than 10000 MΩ.

2. INSULATION RESISTANCE MEASUREMENT OF LA:

One lightning arrester is provided in the wave trap unit. It is to be check for its insulation resistance by motorized megger at 0.5 KV. Its IR value should be greater than 10000 MΩ.

3. CONTACT RESISTANCE MEASUREMENT OF CONNECTORS/JOINTS:

Where ever clamps or joints are there we have to check its contact resistance after completion of all connections. The obtained value should be very less i.e. it must be less than 5 μΩ. This shows proper & solid connectivity between clamps and terminals/IPS.