Re: [CAD_CAM_EDM_DRO] Phase Converter

I have built a phase converter (it worked just fine) and then I bought a
VFD. I am much happier with the VFD than with the phase converter. Not only
does the VFD handle the phase conversion, but it lets me ramp up and ramp
down the mill so that when it starts there is no huge power draw and when I
shut it down it comes to a stop in about 1/4 of the time that it did with
the phase converter.

If you are determined to build a phase converter there are about 4 links in
the list off the FAQ page.

Tim
[Denver, CO]
http://www.KTMarketing.com/CNC.html

----- Original Message -----

> Hi Terry -
>
> I just went through this to get 3 phase from 220VAC @ 60Hz. I
> used a 7.5HP idler motor, and I'm operating a 5HP lathe. I found
> everything I needed at these two links:
>
> http://www.metalwebnews.com/howto/ph-conv/ph-conv.html
> http://www.homemetalshopclub.org/projects/phconv/phconv.html
>
> I used the self-starting circuit with a safety relay, and I'm very
> happy with the results. I ended up having to use run capacitors
> to balance the phases, and bypassing the lathe's overload relay,
> but I am able to get 2500 rpm with slow blow fuses.
>
> You can contact me offlist if you need more help.
>
> Regards,
>
> Carlos Guillermo
> VERVE Engineering & Design