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Safe and touch proof connection for electro-mechanical protection relay and secondary circuits.

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Package 1kg 17L 15W 5H
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Suitable for testng CDG, CAG series electromechanical protection relays without removing the relay from the case.


An electromechanical relay test plug aids in the simple connection of relay test equipment to protection relays and secondary circuits. It provides a safe and touch proof “make before break” contact allowing interruption free connection to live and in service circuits. It increases efficiency as it allows for a single test set up for multiple relays.

This relay test plug has ten pairs of silver plated finger contacts which are linked to the test sockets. The top and bottom contact strips of each finger are separated by insulation. To avoid the possible paralleling of dc trip circuits, the top contact strip on contact fingers 3 & 4 is shortened to isolate the external circuit before the test circuit is connected to the relay.

Draw out cases have readily accessible contacts and it is only necessary to remove the cover of the relay or meter and insert the test plug. All test connections are made automatically when the plug is inserted and normal conditions are restored when the plug is withdrawn.


Key Features

  • On load testing of CDGand CAG series relays / meters without disturbing panel wiring.
  • Reduced cost of commissioning and routine maintenance.
  • Simple and safe testing.

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