MG30: For Impedance Grounded (NGR / NGT) Generators
MG30-I: For Solidly Grounded Generators

MG30 / MG30-I is Multifunction Microprocessor Relay for protection of medium/large synchronous generators. The relay measures the RMS of three-phase currents and voltages and computes the positive and negative sequence components of the Current system.


Salient Features:

  • Voltage-controlled overcurrent protection
  • Thermal image element with prealarm level
  • Reverse power protection
  • Loss of Field protection
  • PT s’ fuse failure protection
  • Modbus Communication Protocol
  • Breaker Failure protection
  • Inadvertent C/B closure protection
  • Blocking Output and Blocking Input for pilot wire selectivity coordination