4 May
2017
4 May
'17
7:36 a.m.
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:
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.
Marc
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:
http://www.phasetechnologies.com/downloads/products/phase-perfect/pt330spec…
Bought on ebay quite a few years ago.
I also have a small Phoenix rotary phase converter, also from ebay. This
one seems to have unbalanced outputs.
I believe it is for motor loads only.
Bob