This set up is designed to study the working principle and DMT / IDMT characteristics of Single phase OVER  VOLTAGE RELAY (Microcontroller type). This set up consists of

  1. Microcontroller type Over Voltage Relay –DMT & IDMT & (2).Relay test kit with meter

Type              Microcontroller based under / over voltage Relay

PT Input       110VAC

PMS              50% -200% in steps of 25%

TMS               0.1 to 1 in steps of 0.1s

Function        IDMT

Features        Both OC & UC characteristics

Make             Power lab

  • 20X4 LCD indicator for set & actual current indication and trip status indication
  • In built stop clock for trip time indication
  • 4 numbers of Touch Keys for parameter setting & selection
  • Banana connectors for CT input
  • DMT / IDMT Characteristics selection
  • One number of “NC” & “NO” Contact @ 230VAC ,5A rating
  • 230vac input
Relay test Kit (Voltage injector kit)
  • One number of variable AC voltage Source of 0-400VAC
  • One number of Autotransformer is provided to adjust the voltage output
  • One number of digital AC Voltmeter (0-300V) is provided to measure the Voltage output
  • One number of Automatic trip time measurement circuit (ATTM Circuit) is provided for Relay trip time measurement
  • 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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