COMPRESSOR - 1

 MADULE DETAILS 

PFR - 

PHASE FREQUENCE RELAY.

A phase-frequence relay is a critical device in three-phase electrical systems that monitors and protects equipment from damage caused by incorrect phase rotation.

PFR - (fig- 2)

- DRAWING -

PROBLEM FACING and RECTIFY --

1. Compressor not resetting for start.

Again according the cercuit overload fault symbol showing but not reset there.

Finally the fault at pfr.NO point not NC after 10/11 PFR point sorting the overload fault symbol reset and starting it.