This set up is designed to study the working principle and IDMT characteristics of Single phase IDMT Type over current relay (electromechanical type). This set up consists of

  1. Electromechanical Type – Over Current Relay –IDMT Type
  2. Relay test kit (Current Injection Unit)
  • One number of Electromechanical Type – Over Current Relay –IDMT Type /5A/ALSTOM Make
  • One number of variable AC current Source of 0-25A
  • Digital AC Ammeter (0-30A)  to measure the current input in amp
  • One number of Automatic trip time measurement circuit (ATTM Circuit) is provided
  • One number LCD – Digital stop Clock is provided in ATTM Circuit to measure relay trip time
  • All are mounted on a nice cabinet with diagram stickered on front panel.
  • 230VAC@50Hz AC Input with power ON/OFF Switch
  • For detailed specification :
Experiments
  • Study/Testing of EM type Over current relay- IDMT Characteristics with different Plug setting & time setting Multiplier

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