Re: [CAD_CAM_EDM_DRO] 3-Phase motor running from Single Phase Supply ?

Hi Jon

Most, if not all three phase motor available here in the UK are for 415V.
Some are designed for use with a star/delta starter on 415V only, while others
are dual voltage - Or in the case of Bridgeport, dual speed. In either case,
the motor needs to be able to run at 240V if we are to use a single phase
input VFD.

Regards, Paul.

On Sun, 31 Dec 2000, Jon Elson wrote:
> Hmmm? Why is that? It can be proven electrically that a delta-connected
> motor is indistinguishable from a Wye-connected one, without opening
> it up and looking. (Thevenin's theorem.) So, is this wiring change only
> to change motor voltage, or what?