Question
Download Solution PDFIn a Star-Delta Starter used for induction motors, the starting torque is reduced to approximately:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFStar-Delta Starter
In star delta starting an induction motor is connected in through a star connection throughout the starting period. Then once the motor reaches the required speed, the motor is connected through a delta connection.
As the winding is star-connected, the voltage across each phase of the winding is
In a delta connection,
The starting torque is proportional to the square of the phase voltage.
Last updated on Jun 16, 2025
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