RE: [CAD_CAM_EDM_DRO] Captain Nema Nemo

Check out http://www.dealerselectric.com/ for VFD's. They are listed
under inverter drives. Remember that you have to derate the unit by 50%
to use it with single phase input instead of 3 phase. So, for a 2 hp
motor on a single phase feed you need a 5 hp unit and for a 3 hp motor
you will need a 7.5 hp.

I have no connection with this company other than being a satisfied
customer. I just purchased a 10 hp Motortronics VFD from them and it is
working great and they shipped very quickly. They do often have items
listed on E-bay for less than on their website. The 10 hp VFD I just got
was listed on E-bay as a dutch auction for $90 less than it is on their
site. They did honor the lower price even though I purchased directly.

Tim
[Denver, CO]

> -----Original Message-----
> From: info.host@... [mailto:info.host@...]
> Sent: Monday, September 24, 2001 1:25 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Captain Nema Nemo
>
>
> > What you want is a VFD (Variable Frequency Drive). With this, you
> > will not need the motor starter or the phase converter. 3 Phase
> > motors are usually cheaper than single phase, and also generally
> > perform better.
>
> How much do VDF's cost in the 2-3hp range? The man said he
> couldn't promise me the spindle motor works as he hasn't
> plugged the mill in yet. I thought it might be easier to
> renew the spindle motor anyway because it must have worn a
> bit by now. If it's triple phase I can start the spindle on
> my single phase using the capacitor over two phases idea but
> 415V? Any thoughts? I could ask him to try it if he has
> triple 415v, whether he will or not I don't know.
>
> Thanks for the help,
> John He.
>
>
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