Anything special about converting VAX 11/780 to single phase?

From: Robert F Schaefer <rschaefe_at_gcfn.org>
Date: Fri Feb 1 11:29:36 2002

>
> --- Robert F Schaefer <rschaefe_at_gcfn.org> wrote:
>> ISTR there was a model that had 3-phase blower motors. A three-phase
>> motor will not operate on single-phase. It *has* to have all three
>> legs to run.
>
> We had an 8530 that needed 3-phase. I had to install the plug on the
> panel for our AC because our machine-panel only had two legs
> (everything we had was single-phase 120VAC except the TU78 - 220V).
> Our AC was large enough that it had a 3-phase compressor.

I would love to have a three-phase service. It's just more efficient for
*anything* with a motor in it, and it makes powering high-current devices
much easier. I really can't justify a 480 volt three phase service, but if
I'm ever in a position to get a new service to my house, I'm going to take
a good hard look at it, and damn the cost.

That AC is probably putting out a whole lot of noise-- have any problems
with that 8530?

>
> -ethan

Bob

>
>
>
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Received on Fri Feb 01 2002 - 11:29:36 GMT

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