What Is A Soft Starter And How Does It Work. At anything less than full load power factor of the induction motor is less than its rated power factor because the torque producing current decreases as the load decreases but the magnetizing current does not change. Mostly industrial motors are single phase or three-phase induction motor depends upon supply fed to it.
Thus motors do not receive the full voltage right away. A Soft Starter is a device that starts motors with reduced power supplied at start-up. Electrical soft starters temporarily reduce voltage or current input by reducing torque.
A soft starter relies on three pairs of SCRs silicon controlled rectifiers one pair for each phase of power that are applied gradually for portion of each voltage phase limiting the voltage provided to the motor.
Induction motor is the most frequently used motor for industrial as well as domestic applications. Introduction to Soft Starter. These often involve hands-on activities and manipulatives. At anything less than full load power factor of the induction motor is less than its rated power factor because the torque producing current decreases as the load decreases but the magnetizing current does not change.
