Maintenance for the relay

  • Checks are to be carried out on relay contacts for damage due to arcing.
  • Polish the contact with emery paper to remove rust and deposits.
  • Check the closing linkage for free movement.
  • Check the continuity of the contacts with a multimeter
  • There are arc chutes provided to quench the arcing. Check for burnout of the same.
  • Check the tension of the spring.
  • Open circuit and short circuit tests are to be performed on the coil by a multimeter.
  • Check the continuity of the trip circuit with a multimeter.
  • Check the tightness of the supply terminals.

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