Abstract:

 The common problem with three-phase supply is  absence of any one of  the  phase .this leads to damage of induction motor or any three – phase load .this  project is designed to monitor the presence of  three phase and to display condition of each phase on LED .if any phase  is absent, immediately this this system  shuts down the three phase load .if all the phase are present  automatically this system switches on the load.

This project is also design ed to monitor the voltage condition of each phase .if  the voltage level of any phase is over or under the rated / special  voltage rating ,immediately this  system shuts down the load.

3-PHASE LOAD SAFETY IMPLEMENTATION WITH AUTO TURN OFF AND AUTO TURN ON FACILITY