Introduction
This circuit contains a very popularity in industries.This control circuit is used to control the pressure of motor by using pressure switch and pressure control relays.This circuit controls the motor according to the pressure of the line.This circuits also helps us in controlling of many large and huge size of motors and it's rating.
Explanation
This circuit contains a pressure switch and some pressure control relays.The main function is of the relays which controls the pressure in the whole circuit.The pressure relays are used to measure the pressure according to the line voltage and current which is supplying the power to the motor.When the line voltage and current increases to it's normal rating or value the relays operates automatically and starts sensing the pressure and subtracts the normal and increased values of voltage and current also.If the resultant value is high then the relays give the operating signal to the pressure switch,the switch operates and disconnects the motor to the supply.The relay then gives the signal to the indicator or buzzer for warning.
Circuit Diagram
Uses
This type of control circuit of motor is used in large scale of industries and factories.
