IBM 4331 Mainframe 3 phase converter

[Guy Sotomayor Jr]

Does anyone know how to convert KVa to 208v 3-phase currents and/or HP?  IBM’s docs all specify power in KVa and most of the 3 phase converters (other than what Bob posted) seem to specify HP.  If I’m going to spend serious coin on a phase converter (I think I found it online for ~$3k…ouch!), I want to make sure it’s sized properly.

Thanks.

TTFN - Guy

> On May 3, 2017, at 11:26 PM, Curious Marc via cctalk <cctalk at classiccmp.org> wrote:
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> Bob,
> 
> Thanks, that looks just about perfect. Solid state, true sinusoid 3 phase, 30A continuous but can do 140A for 4 seconds - seems made to power a big bunch of vacuum column tapes.
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> Marc
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> From: cctalk <cctalk-bounces at classiccmp.org> on behalf of "cctalk at classiccmp.org" <cctalk at classiccmp.org>
> Reply-To: Bob Rosenbloom <bobalan at sbcglobal.net>, "cctalk at classiccmp.org" <cctalk at classiccmp.org>
> Date: Wednesday, May 3, 2017 at 10:04 PM
> To: "cctalk at classiccmp.org" <cctalk at classiccmp.org>
> Subject: Re: IBM 4331 Mainframe 3 phase converter
> 
> 
> 
> I use a solid state one, an older version of this:
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> http://www.phasetechnologies.com/downloads/products/phase-perfect/pt330specs.pdf
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> Bought on ebay quite a few years ago.
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> I also have a small Phoenix rotary phase converter, also from ebay. This 
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> one seems to have unbalanced outputs.
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> I believe it is for motor loads only.
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> Bob
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