Star Delta Starter for Three Phase Induction Motors - how it works

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The Three-Phase Induction motor is probably the most commonly used electric motor in industry. The problem with this motor is the high starting current, which is 7 to 10 times the rated current. Especially large Three-Phase Induction motors should be started with the appropriate starting aid. The Star-Delta starter is one possibility what we want to discuss in this video. From the content:
0:00 Introduction
0:50 How is the star and delta connection of the motor done?
2:07 Relay Control for Star Delta switching
3:18 Star Delta switching or Soft Starter?

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