7. Starting a DC motor
At power up, the motor does not rotate so the electromotive force is zero. The called current is limited only by armature resistance. This results in a strong starting current. To limit this current between 1.2 and 2 In, the resistor is placed in series with the armature
Contactor starter:
When starting a DC motor in Seri wiring, do not under any circumstances cut the excitation before the armature. |  |
Note : Diagram of Shunt DC Motor starter and Serie DC Motor Starter
