Electro - mechanical type over voltage relay study trainer Relay Make: ALSTOM / AVOMEC / MEGAWINOne no. of Electro-Mechanical type over voltage relayMake: Alstom / Avomec / MegavinVoltage setting multiplier (121v, 132, 143, 154, 165, 176, 187v)Time setting multiplier.One no. of “NO” contact @ 220V, 10Amp rating.One number of “NC” contact @ 220V, 10Amp rating.One no. of 0-260V, 1AMP variable AC source provided for relay coil.One no. of auto transformer provided for AC voltage adjustment.One no. of illuminated rocker switch provided for power ON/OFFOne no. of digital voltmeter used to indicate applied voltage.One no. of automatic relay tripping time measurement circuit.One number of start/stop push-to on switch provided for time measurement circuit & Start / Stop operation of relayOne no. of reset switch provided for timer reset.One no of SPDT switch provided for selecting the Set mode / Test mode operation of relayFour no’s of LED’s provided to Indicate the Start / Stop / Set / Test mode of operationRelay number ‘NO’ ‘NC’ contact terminated at banana socketsOne no of picot lamp provide for relay tripping indicationEXPERIMENTS:Study and testing of over voltage relay with different voltage & time setting multiplier.Measurement of relay tripping time.Plotting the IDMT characteristics of over voltage relay.