3 phase Motor connection, 230V delta or 400V star?

by Igor Okorn   Last Updated October 09, 2019 20:25 PM

I have a motor with specifications:

  • star 400V
  • delta 230V

and motor is of course 3 phase. Now the question is, how can I connect the motor to delta connection if I have only 400V line to line voltage? Where can I get 230V line to line? Will I damage the motor in delta connection? Is delta configuration only meant to be using with VFD in that case?

Tags : motor


Answers 1


Now the question is, how can I connect the motor to delta connection if I have only 400V line to line voltage?

Wire the motor in star and connect it to your 400 V phase-to-phase supply.

Where can I get 230 V line to line?

You can't.

Will I damage the motor in delta connection?

Yes. You would be applying 400 V to a winding rated for 230 V.

Is delta configuration only meant to be using with VFD in that case?

No. It is meant for a 230 V phase-to-phase supply.

Transistor
Transistor
October 09, 2019 20:22 PM

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