Introduction
In this article you will learn to make an interlocking
circuit of single phase ac motors. You will also learn the basics of motor
controls circuits used in industries and in many other places. This circuit is designed for single phase
ac motors. This is a very simple circuit. In this circuit, you will be
able to interlock the single phase ac motors by using the simple switches or
push buttons very easily.
Apparatus used
Fuse (F1)
Overload relay (OL)
3 Normally closed push button (NC)
1 Normally open push button (NO)
3 single phase switches (S1,S2,S3)
2 magnetic contactors (C1,C2)
Explanation
In this circuit, the supply is connected to the circuit. When
the supply is will be on of the motor. It starts running. If we press the second
normally closed switch then it will open the circuit by which the supply will
stop and the motor will not be closed because when the normally closed switch
will open then the other switch(S2) will automatically closed and then the
motor will run smoothly without any problem. This circuit is used in case of
any problem of short circuit or in any other situation that the motor or
machine connected to the circuit remain constant and cannot be stopped.
Circuit Diagram
Use
The use of this circuit is in industrial areas or in
manufacturing industries for protection and for smoothly running.