Because of this, the induction motor’s impedance is at its lowest point, and it draws a significant quantity of current known as inrush current. Therefore, the slip of the induction motor is at its highest point, i.e. one at rest (rest position). Due to the strong inrush current, the air gap between the rotor and stator becomes magnetized, Motor Starter Control Panel, creating an electromagnetic field (EMF) in the rotor. In the rotor winding, this EMF creates an electrical current that generates a magnetic field, producing torque. The motor’s slip reduces with increasing rotor speed, resulting in less power pulled from the motor.

The high inrush current is 5-8 times greater than the average full-load current rated for the circuit. As a result, a high quantity of wind can burn or damage the motor’s windings, rendering the machine inoperable. It can also cause a significant drop in supply line voltage, putting other connected devices in jeopardy.

Since there are so many currents flowing through a motor at startup, we, electrical wire and cable manufacturers in India, employ a starter to keep that current low for a brief time before returning it to its normal state after reaching a specific speed. During regular operation, they protect against fault circumstances such as low voltage and overcurrent.