When starting synchronous motors of larger sizes through a starting compensator or an automatic starter, the voltage applied to the motor terminals at the instant of start is about half the value of the rated line voltage, and the starting surge of current is limited.

Question

Quizplus · Accepted Answer

This is correct, as the starting compensator or automatic starter allows for a reduced voltage starting method to limit the surge of current during startup. Typically, the voltage applied is about half the rated line voltage for larger synchronous motors.

When Starting Synchronous Motors of Larger Sizes Through a Starting