What are the starters used for starting of cage motors?
A. Star-delta starter.
B. Auto transformer starter.
C. DOL starter.
D. All of these.
Show Answer
Answer: D
Share your understanding of this question with the correct explanation.
The starters used for starting cage motors include:
A. Star-delta starter: This starter initially connects the motor windings in a star configuration, which reduces the starting current. Once the motor reaches a certain speed, the windings are switched to a delta configuration for normal operation.
B. Auto transformer starter: This starter uses an auto transformer to gradually increase the voltage applied to the motor during starting, reducing the starting current.
C. DOL (Direct-On-Line) starter: This starter directly connects the motor to the power supply, allowing full voltage to be applied to the motor during starting.
All of these starters are commonly used for starting cage motors, depending on the motor size, application requirements, and available power supply. They provide different methods of reducing the high starting current and ensuring a smooth and controlled start for the motor.
Therefore, option D, All of these, is the correct answer.