Introduction
In this circuit three over load relays are used which contains which contains a set of single pole and double throw contacts.The normally closed contactor is used to provide the protection to the motor in any overload condition of the motor.The normally open contactor is used to turn on the supply of the indicator which indicates that the motor is in running condition and the motor is operating.
Explanation
In this circuit the three overload relays are used which are separately connected to each line of the motor in series.This circuit provides a serious protection to the three phase motor.When motor starts taking too much supply the in this case the overload relaysense the problem and measures the supply ratio if motor is taking too much supply ,then the overload relay operates and turn off the supply and the motor will remain safe.
Circuit Diagram
Uses
This control circuit of motor is used to provide a best protection to the motor in industries of different kinds.
