Wye-delta starting is accomplished by connecting the motor stator windings in wye, or star, during the starting period and then reconnecting them in delta during the run period.

Question

Quizplus · Accepted Answer

Wye-delta starting reduces the voltage applied to each motor winding during startup, which lowers the starting current and torque, making it a common method for reducing the impact of motor startup on electrical systems. After starting, the windings are reconnected in delta to allow the motor to run at its full power capacity.

Wye-Delta Starting Is Accomplished by Connecting the Motor Stator Windings