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Megger SMRT33 Protective Relay Test System

Downloads & Videos SMRT33_datasheet

Brand: Megger

Model: SMRT33

The Megger SMRT33 Protective Relay Test System provides high power in BOTH the voltage and current channels to test virtually all types of protective relays used in heavy industrial, distributed generation and low to medium voltage distribution substations. It has the “smart” combination of high compliance voltage and high current to test all electromechanical, solid-state and microprocessor-based overcurrent relays, including high impedance directional ground overcurrent.


Megger SMRT33 Protective Relay Test System designed to test under/over voltage, single-phase or three-phase impedance, single-phase or three-phase power, directional, synchronizing, auto-synchronizing, negative sequence under/over voltage, current balance, frequency, volts/hertz, reclosing, thermal, and various auxiliary relays. It can perform tests on current differential relays, including 2nd , 3rd  and 5th harmonic restraint.



  • Small, rugged, lightweight and powerful
  • Operate with or without a computer
  • Intuitive manual operation with Smart Touch View Interface
  • High current, high power output - (45 Amps/300 VA rms) per phase
  • Network interface provides IEC 61850 test capabilities
  • Fully automated testing using AVTS software
  • Optional transducer test capability