Electro – mechanical type under voltage relay study trainer

• Relay Make: ALSTOM / AVOMEC / MEGAWIN
• One no. of Electro-Mechanical type Under Voltage relay
  • Voltage setting multiplier (55V, 66, 77, 88, 99v)                             
  • Time setting multiplier
  • One no. of “NO” contact @ 220V, 10Amp rating
  • One no. of “NC” contact @ 220V, 10Amp rating.

One No. of Relay TEST SET-UP

• 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/OFF
• One 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 relay
• One no. of reset switch provided for timer reset.
• One no of SPDT switch provided for selecting the Set mode / Test mode operation of relay
• Four no’s of LED’s provided to Indicate the Start / Stop / Set / Test mode of operation
• Relay number ‘NO’ ‘NC’ contact terminated at banana sockets
• One no of picot lamp provide for relay tripping indication

EXPERIMENTS:

• Study and testing of under voltage relay with different voltage setting multiplier.
• Measurement of relay tripping time
• Plotting the IDMT Characteristics of Under voltage relay.