When starting three phase induction motors which of the following starting methods will immediately apply rated voltage to the machine?

Which starting method is best for induction motor?

Starting of an Induction Motor

  • Direct on-line starter. The direct on-line starter method, of an induction motor, is simple and economical. …
  • Star delta starter. The star delta starter method of starting three-phase induction motors is very common and widely used among all the methods. …
  • Autotransformer starter.

What is the least expensive method of motor starting?

Direct-on-line is the most common method particularly since it is the cheapest and simplest. It also causes the tiniest rise in temperature out of all the techniques in motor starting. The issue with DOL is that the current can be as high as eight times or more than its normal load.

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