Re: [CAD_CAM_EDM_DRO] Re: VFD's / Skates, Tim & JohnS.

> You will probably find the 460 V version at a particular power level is
> cheaper than the 230 V one. it will be much easier to convert single
> phase 230 to 460 than the 3-phase output of the inverter.

Problem, I am unable to find anywhere selling single phase 460volt input
VFD's. All the 460volt ones I've found want three phase input. Why is it
difficult to step up the voltage after it's been VFD'ed? Is it something to
do with the way the transformer responds to the difficult frequencies? Any
ideas who might sell a 460volt single phase input VFD if not? I feel the
appeal of the midget machines returning. Probably find out the motor has
been replaced with a single phase 230volt now.... sod's law! : )

Thanks for the help,
John H