MRG3P is designed to control voltage asymmetry, phase failure and phase sequence of all three phases L1, L2, L3. Relay is also controlling minimum and maximum voltage level.

Phase asymmetry, minimum and maximum voltage level are adjustable in real values and they are also possible to be disabled. Relay is also controlling set minimum and maximum voltage level.

Relay has one output double-throw contact 8 A.

Device functions

MRG3P fce 1
Max / Min voltage level control

MRG3P fce 3
Asymmetry control

MRG3P fce 1
Phase failure control

MRG3P fce 3
Phase sequence control


Main features

  • Phase failure monitoring
  • Phase sequence monitoring
  • Maximum and minimum voltage level control
  • Adjustable asymmetry 5 ... 20 %
  • DFT (Discrete Fourier Transformation)
  • Digital optical operation status signalisation