It reduces the starting current to the AC induction motors and also reduces the motor torque. The starter is a device which is used for switching and protecting the electric motor from the dangerous overloads by tripping. Protection Scheme of Single phase Induction Motor
It is more costly, but still facilitates high starting and breakdown torque along with smooth running characteristics at high horsepower ratings. Start capacitor provides starting boost to motor and PSC provides high running to the motor. Run capacitor is connected in series with the start winding or auxiliary winding, and a start capacitor is connected in the circuit using a normally closed switch while starting the motor. The features of the capacitor start and PSC methods can be combined with this method. Capacitor Start Capacitor Run Capacitor Start Capacitor Run Motor
