This set up is designed to study the working principle % biased single phase differential relay. This set up consists of

  1. Static type Percentage biased differential Relay & (2).Test set up for Differential protection of transformer
Percentage biased differential Relay
  • 5A Ratings
  • Static (Microcontroller) type
  • IDMT or DMT Type (any one type)
  • With bias setting key & digital display
  • With One number of “NO” Contact of 5A ratings
  • With One number of “NC” Contact of 5A ratings
  • Make : POWER LAB /MEGAWIN / or any other available model 
Test set up
  • One number of  single phase Fault simulating transformer for differential protection test set up
        • Primary            : 0-6-12-24-48V @ 4A
        • Secondary       : 0-6-12-24-48V @ 4A
  • One number of 230/ 48v Step down transformer is provided for Fault simulating transformer input
  • Two number of digital AC Ammeter (0-10A) is provided to measure the primary and secondary current of fault simulating transformer
  • One number of 5A rheostat is provided as short circuit resistor
  • One number of Automatic trip time measurement circuit (ATTM Circuit) is provided
        • One number START push button is provided in ATTM Circuit
        • One number STOP push button is provided in ATTM Circuit
        • One number Digital stop Clock is provided in ATTM Circuit to measure relay trip time
  •  All are mounted on a nice cabinet with diagram stickered front panel.
  • 230VAC@50Hz AC Input with power ON/OFF Switch
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