Re: hefty amps-- DC 24-48V @ 1kA supply

On Tue, 11 Mar 2008 09:43:23 -0400, Spehro Pefhany
<speffSNIP@xxxxxxxxxxxxxxxxxxxxxxx> wrote:

I need a DC supply (could be split into 5 supplies of 1/5 the current)
that will handle a continuous current of 1000A total. So, 25-50kW,
roughly. Ripple at 60Hz should be < 2%, regulation and any HF hash
isn't too important.

Any ideas for something (relatively) available/affordable?

3-phase 480V/600VAC SMPS?
MG set?
diesel?

You might check out second-hand 60Hz plating rectifiers. There were a
number going cheap not so long ago, as the domestic board fab
businesses in your area went overseas.

They are typically 8-20V as I recall, and may look pretty seedy due to
application environment, but were rated for continuous operation and
sell by scrap weight + transport.

RL
.

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