Changing the Voltage for an Air Compressor

By getting in touch with the original equipment manufacturer, and following their recommendations.

Assuming your 230v supply is 3-phase, 230v phase-phase, if the motor is 380v Y, 220v Δ, just connect in Δ. (220 and 230 are near enough)

If it's 380v Δ, 660v Y, you need to change the motor.

Cheers..........Codey

That motor seems to be a 380V 50Hz. 3Ph. and should be ready to run on 440V 60Hz. 3Ph. with no change, but for your supply which is 230V you would need to do these connections in your motor IF your motor has 9 leads:

For a Y connection: Conect 4 & 5 & 6 together and isolate; then connect 1 & 7 to phase 1. Connect 2 & 8 to phase 2. And connect 3 & 9 to phase 3.

For a Delta connection: Connect 1 & 6 & 7 to phase 1, connect 2 & 4 & 8 to phase 2 and connect 3 & 5 & 9 to phase 3.

If your motor has only 3 leads, then it is not dual voltage and you've gotta change it.

Yahlasit

Buy a single phase motor of the same power....or bigger.....sell the old motor to finance the new/second hand one....