[VHFcontesting] Schematic needed for HP 51V 57A power supply

[kb8u vhf]

Here's some information on your power supply (from the Microwave email list).
Since I wrote this, I powered up mine successfully.  I haven't done anything
with it yet, though, other than load test it.  I might have had to connect different
pins to power it up, I'll check later.  Apparently the voltage can be adjusted
via the I2C bus, but I don't know if anybody's figured out exactly how to do 
that.  I haven't seen a schematic available, either.  If you figure out how to turn
the voltage down, please let me know.

For load testing, I bought two of the supplies, wired them in series, and ran the
102V to a oil-filled space heater (no fan).  It got nice and toasty!

73, Russ   KB8U

===============================================

Date: Thu, 19 Nov 2009 23:01:05 -0500 (EST)
Subject: Re: [Mw] Large Power Supplies

I bought one of these.  It has the same HP part numbers you mentioned
below, but the connectors are different than what's depicted in the .pdf
you mentioned.

After some sleuthing, I belive I found the pin-outs here:
http://www.powerconversion.com/assets/datasheets/bulk/hps3kw.pdf

I haven't tried the smoke-test yet.  Mine has a bit of what looks like
soot by the fans so I suspect it was in a data center fire.  No components
look burnt and it smells OK but I guess that's why it was only $10.
Computers with soot in them are considered unreliable so a bunch were
probably scrapped even though they were still operational after the fire.
Should be OK for intermittent ham use.

Hope this helps,


                                           -Russell Dwarshuis  KB8U

On Fri, 13 Nov 2009, Stan wrote:

> Hello The Net;
>
> Thanks for your patience, took me awhile to dig out this old info.
>
> One switch mode power supply I got from Ebay was for a HP computer server.
> HP Part# 226519-001
> Spares part # 253232-001
>
> Dimensions:  ~ 22" long x 5" high x 3" wide
>
> Input: v ~200-240 VAC to 20A, 50/60 Hz
>
> DC output: 2,950W max, 51.4 V, 57A max,  +5Vsb 5A max
>
> to enable the PS, connect "PSon" to the 5VSB return (pinout on the .pdf)
>
> The OEM original equipment manufacturer is ASTEC as noted on the main
> circuit board.
> ASTEC model HPS3KW 3000 watts, 180-264 VAC input, single phase.
>
> ASTEC is now a subsidiary of Emerson Network Power and their part number
> is HPS3000
>
> Look to:  http://www.powerconversion.com/assets/hps3000_ds_1256008498.pdf
>
> I have not load tested this unit, still designing a 3KW++ load bank.
>
> Caveat:  some of the larger DC power supplies are for a 3 phase AC input,
> which may not be commonly available at your house.
> If it has 3 each ganged circuit breakers on the AC input power, it is
> probably 3 phase.
>
> I hope this info is useful.
>
> Stan, W1LE     FN41sr     Cape Cod
>
=================================================

> Date: Mon, 1 Nov 2010 09:03:04 -0400
> From: "Steven M. Simons" <ssimons at manitousys.com>
> Subject: [VHFcontesting] Schematic needed for HP 51V 57A power supply
> To: <NEWSVHF at mailman.qth.net>,	"Packrats-Bounces"
> 	<packrats-bounces at mailman.qth.net>
> Cc: vhfcontesting at contesting.com
> Message-ID: <008701cb79c5$1f86d780$5e948680$@com>
> Content-Type: text/plain;	charset="us-ascii"
> 
> To all,
> 
>  
> 
> Does anyone have a schematic for an HP PN 226519-001
> 
> These are the server power supplies available from EBay and many used to
> power the decommissioned Harris TV amplifiers.
> 
>  
> 
> I'd like to understand the control pin nomenclature and intimately have
> external control of the output voltage level.
> 
>  
> 
> 73,
> 
> Steve
> 
>  
> 
> W1SMS
> 
> Steven M. Simons
> 
> Tel.203.733.2110     Fax.203.746.1459
> 
> 33 Ball Pond Road  Danbury, CT 06811
> 
> Mailing Address: PO Box 8066  New Fairfield, CT 06812 
> 
> FN31FK Lat 41.442718 Long -73.505777 
> 
> (Ex KF6AJ, WA3WAS)
> 
******************************