• Phase failure
• Phase Imbalance
• Incorrect Phase Sequence
  

Description
KRM72x monitors three phase AC supplies for incorrect phase sequence, phase failure and phase imbalance on systems up to 500V.

Operation
A sensitivity adjustment on the top of the unit allows adjustment up to 50% of the phase to phase voltage. The minimum level is selected to avoid any nuisance tripping due to normal variations in voltages.

A factory set delay of approximately two seconds prevents tripping due to transients. The unit is factory set for 50/60Hz.

Green LED indicate the phase sequence and will lit when direction of rotation is correct.

Models: