DC Starters .
DC Starters (Resistance Cut Off Starters) cannot be started
directly with the applied voltage as the back emf is very low hence very
heavy current flows in the motor, to reduce the inflow of current
resistance is inserted in series with the motor armature & once the
motor starts rotating the resistances are gradually cut off.
Features :
This concept of starting of DC Motors has 3 Basic types of DC Starters: