RE: [CAD_CAM_EDM_DRO] Re: Three Phase Power

All the VFD's I have (3 of them) give rating direct from the
manufacturer for running them on 1 phase input. On the 2 later units
they are rated for driving a 50% smaller motor (I.E. rated 10 hp 3 phase
and 5 hp 1 phase) when driven from 1 phase power. The 3 hp unit I have
is rated for a full 3 hp with either 3 phase or 1 phase input. You don't
need to mess with anything on the unit. Just use one that is
appropriately rated on your 1 phase input.

Tim
[Denver CO]
Sherline Products at Deep Discount
Mach1 & DeskCNC with Credit Card ordering
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> -----Original Message-----
>
> Hi Jon (et. al.),
> I was concerned that I would get a large amount of ripple on the
> capacitors that create the DC buss in the VFD (which 'wants' three
> phase) if I only used single phase, isn't this true? Using three
> phase would reduce the rectified ripple to almost nothing. Should I
> just add some extra BIG caps to the DC buss on the VFD if I use
> single phase (or is feeding single phase to the VFD really not as
> much of a problem as I though it might be)?
>
> Thanks,
>
> Jeff