Why Starter Is Necessary In Dc Motor. While starting the DC motor it draws the heavy current which damages the motor. The field winding will also get full supply through the coil of the No-Volt-Release NVR.
A resistor is used in the starter for a DC shunt motor. Therefore the back emf at any given speed depends on. To give an explanation of the above mentioned question let us take into consideration the basic operational voltage equation of the DC motor which is given by Where E is the supply voltage Ia is the armature current Ra is the armature resistance.
The start arm is simply moved towards right to start the motor.
The field winding will also get full supply through the coil of the No-Volt-Release NVR. While starting the DC motor it draws the heavy current which damages the motor. Types of DC motor starters. Limit inrush current where necessary.
