Re: electrical help needed: kinda ot

I didnt make it clear, the problem is that most all the
control, heaters, transformers, would have to be changed some 440 some 110(DC)
hardinge is tring to find a wiring diagram, they said not to hold my breath. thats why they said a step up transformer from 220
to 440 would be the way to go just hook it up

Ted wrote:

> From: "Ted" <rtr@...>
>
> rtr@...
> That's a control transformer, It takes line voltage and reduces it to
> control voltage. Depending on the year, the secondary winding on the
> transformer is typically 110, 12, 24, or 48 vac. Other voltages are
> sometimes found. Just look at the devices fed by that transformer. They
> will be marked with the control voltage used on that machine. Of course
> it's easier if you have a copy of the wiring diagrams. Manufacturere will
> usually sell you a copy from their archives, though they sometimes will
> give you a copy. If the primary uses four amps you will need a 220/240
> or 208 volt (depending on your own mains) transformer that takes 8 amps on
> the primary. If it is the secondary winding that provides 4 amps, then it
> still only needs to provide 4 amps at the secondary voltage.
>
> Don't forget that overload protection and full voltage coils must be
> changed to handle the halved voltage and the doubled current. Control
> circuits do not require any changing.
>
> Any normal industrial electrical supplier should be able to provide a
> transformer.
>
> Ted Robbins.
> ----------
> > From: mike grady <mgrady@...>
> > To: CAD_CAM_EDM_DRO@onelist.com
> > Subject: [CAD_CAM_EDM_DRO] electrical help needed: kinda ot
> > Date: Monday, June 14, 1999 6:28 PM
> >
> > From: mike grady <mgrady@...>
> >
> > there is a lot of electrical/electronic knowledge on this list
> > so I thought I would ask here
> > I have a hardinge hct chucker that is 440v 3 ph
> > hardinge recommended using a transformer to convert it to
> > 220 instead of rewiring the control box
> > on 440 it uses no more than 4 amps
> > where can i get a transformer, hopefully cheap
> > It mite get converted to cnc but I have to get it running first
> >
> > thanks
> > mike
> >
> >
> >
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