Re: [CAD_CAM_EDM_DRO] welding machine as a power supply

Arc welders (AC) usually have a reactor to alter the amps setting. This
means
that with low current settings the regulation will be quite bad. However at
only 30 amps there is very little demand on a welding transformer and even a
cheap one will easily manage 100% duty cycle.
despite the higher rating needed for DC .
Anyway, a cnc machine is not capable of rapid traverse on all axis for more
than a few seconds without running out of axis unless you are doing a life
test and running it flat out on all axis in both directions continuously.A
useful excersize for prototype development

Yes , there is no reason not to use such a transformer,
but avoid running in series. You would be hard pushed
to end up with an off- load voltage of less than 65 V.


Kib

---- Original Message -----
From: "ftomazz" <filipetomaz@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, March 21, 2004 1:25 PM
Subject: [CAD_CAM_EDM_DRO] welding machine as a power supply

> Hello. I need about 65V to feed 3 motors that take 10Amp each (max
> ratings).
>
> There is any good reason not to use a welding machine (or more than
> one) in a serial configuration to reach the 65V@30Amp? I can get old
> (not inverter welding machines).
>
> Probably a bad idea...
>
>
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