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Aug 15, 2010, 08:08 PM
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How to convert Server Power Supplies
Thought it might be useful to gather this in the one place.
The practice of converting computer SERVER power supplies to make a very high quality high power supply at low cost is attractive. It doesn’t normally require any modification to the supply but the hard part is figuring out how to trick them into turning on. Far and away the best way is to find someone who has already done it. I have put down a few references I know about and welcome additions. This is about SERVER supplies which often have large 12V capacity and not much else; it is NOT about converting normal PC power supplies. (The ‘ground the green wire and add a load resistor’ stuff). That is covered extensively elsewhere. UPDATE There are now available supplies for PCs that have substantial 12V rails and large (850-1200 Watt) capacity that work without any electrical conversion. If you have used one of these, suggest you start a separate thread. Please, please. This is a REFERENCE thread. Just post a link (with comments) to other posts that show how to do it if you know of one that isn’t here. IF YOU HAVE AN OPINION OR JUST WANT TO COMMENT OR HAVE A QUESTION ABOUT CONVERTING A PARTICULAR SUPPLY please do it somewhere else (like the original threads for example or PM me). Obviously info on sources of supply for these devices is welcome though – please post that if you know it, as well as any errors that need correcting. Bottom Line: If you have an unknown supply you need help with, try a post in the original 12v 100A supply thread (link 2 below) which seems to have a good range of posters - or start a new one with a specific title that includes your question. That thread now has some good info on how to solve an unknown supply as well. See the first few posts. When/if you ever get it to work, then post the link to that info here to make it easier for others to find. If you have an unknown supply and can't find the information from someone who has already solved it then this post contains the best information/links on how to establish which pins might turn it on and control the output voltage. https://www.rcgroups.com/forums/show...87&postcount=7 UPDATE: This one contains additional information that is more useful. https://www.rcgroups.com/forums/show...&postcount=570 Hope this proves useful. John Best post on how to deal with an unknown supply https://www.rcgroups.com/forums/showpost.php?p=18002964&postcount=570 Various threads containing information on converting different supplies. 1) The original IBM Series 235 Supply which started it all. https://www.rcgroups.com/forums/show...33&postcount=3 2) A simple high quality 12Volt 100Amp Power Supply thread starts here https://www.rcgroups.com/forums/show...97&postcount=1 This is my thread on the HP PROLIANT DL580/ML570G3 which is a 12V 1300Watt supply. It's still my favourite for quality, power, small size and having a proper plug for the power cord BUT it's extremely noisy because of the two small high speed cooling fans. Most people will find its vacuum cleaner impression a PIA. Note that you have to take care to identify exactly which supply by the part number. There is a range of DL580 computers with different supplies. 3) The Compaq HP ESP114 Series 12V 55A Power Supply thread starts here https://www.rcgroups.com/forums/show...73&postcount=1 This is earlb's thread on converting these. Was popular popular and remains a good solution. Decent power but much quieter because they are bigger. Easier to obtain and cheaper as well The attached picture shows the HP 1300 Watt and ESP114 side by side (thanks earlb). The SMALLER one is the more powerful 1300W supply. 4) Dell A570P-00 570W https://www.rcgroups.com/forums/show...postcount=3354 5) Compaq Proliant 169286-002 750W https://www.rcgroups.com/forums/show...&postcount=128 plus https://www.rcgroups.com/forums/show...&postcount=141 6) Sony APS-111 12V 33.3A (Used in CISCO gear). Also known as Ascom Energy Systems Galaxy D0009237 https://www.rcgroups.com/forums/showthread.php?t=800379 7) HP Power Supply DPS-600PB/700CB https://www.rcgroups.com/forums/show...&postcount=253 8) hp PS-3381-1C1 PSU https://www.rcgroups.com/forums/show...=358340&page=2 9) My current recommendation is the HP model DPS-600PB series ESP135 PS that is used in ProLiant DL380 G4 Rack Servers. It is rated at 575W, or 47A at 12V. It is compact, quiet and powerful and is easily modified to slow the fan down and isolate the DC out to make a 24V supply from two of them (see below under using two supplies). There is a detailed how-to on T Jin Tech's page here https://sites.google.com/site/tjingu...projects/HP47A and feathermerchant has them as single or dual (24V) supplies. Akshu's thread (#11 below) on a kit to convert two supplies to 24V uses these ones. They are in the bottom left hand picture below. Using two supplies in series to get 15 or 24V at high power. Two of the DL580/ML570G3 supplies for example will supply 2600W at 24V on a 240V supply! Here’s the thread I started on the practice of connecting two supplies in series to get 24 Volts at high current. Becoming more relevant with the growth of 1000Watt chargers. https://www.rcgroups.com/forums/show....php?t=1170241 Feathermerchant on the forums sells these already made up if you don't feel you have the knowledge to do it yourself. WARNING These supplies were never designed to be run in series. Here's a quote from someone who knows what he is talking about. Now we know much more about the internals of these supplies, the DC isolation method (see below) is preferable if you know what you are doing. I must admit, I am more than a little concerned these days about folks connecting different power supplies in series without a full understanding of the dangers. High powered chargers demand more power, and to get it many people having heard of this practice are haphazardly connecting power supplies in configurations for which they were not designed for and have not been tested or CE certified. All we can do is fight the good fight and continue to educate people. Every week now I get a call or two with a story about series connecting two random, disparate power supplies in an attempt to get more power - with varying success. I sincerely hope the chances of disaster are infinitesimally small and that most all modern supplies have adequate protection built in to avoid anything catastrophic. My concern is for the people playing around modified industrial or hobby grade equipment who don't understand the physics involved and that their actions may be potentially dangerous. 10) Using two power supplies for higher voltage/capacity chargers: safety issues https://www.rcgroups.com/forums/showpost.php?p=13992510&postcount=1 See post 183 in particular for conclusions. An alternative approach that is intrinsically safer 11) And here is discussion of an alternative approach which floats the OUTPUTS rather than modify the inputs. It has developed into a nice solution with a kit of parts available to make a twin 24V 47A system. Thanks akshu https://www.rcgroups.com/forums/show....php?t=1369612 racerxky has photos of how to isolate the OUTPUT of my original HP PROLIANT DL580/ML570G3 (12V 1300Watt) supply in Post #2 above here: https://www.rcgroups.com/forums/show...&postcount=678 Here's a thread on using two Dell PE6800 supplies - they are the JD200 model https://www.rcgroups.com/forums/show....php?t=1452524 This is an intrinsically safer solution but does require significant disassembly and work on the supply. You can use the opportunity to add a resistor to the fans though and quieten them down a bit! |
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Last edited by jj604; Oct 28, 2015 at 04:51 PM.
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Aug 15, 2010, 09:18 PM
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Reserved for updates and additions
I'll move the URL's from stuff that people add or more that I find into this post for easy reference from time to time. Only the stuff that isn't already on this first page so check the first 10 posts at least.
UPDATE: This thread is staying pretty focussed and to the point (thanks guys) so it is no big hassle to scan right through it. I won't move any more posts into this one for now. 1) Compaq Model DPS-450BB ( Delta Model number DPS-450BP) Series ESP104 P/N: 401401-001 Spare/N: 101902-001 https://www.rcgroups.com/forums/show....php?t=1076321 2) Some additional info on the ground pins on the = HP Power Supply DPS-600PB https://www.rcgroups.com/forums/show...&postcount=312 3) Someone posted a useful link on the 100A supply thread. It is an article, Modifying Hewlett Packard Server Power Supplies for Ham Radio Use which documents the modification of 2 types of Hewlett Packard switching power supplies to enable their use as power sources for ham radio equipment. The article is intended to provide experimenters with the information necessary to modify successfully the following types of power supply: Hewlett Packard HP-194989 (400W, 32A max. on the 12v line) Hewlett Packard HP-280127 (325W, 26A max. on the 12v line) It contains some useful info on figuring out how to make them operate logically rather than by trial and error. http://www.qsl.net/w8zpf/Files/Powersup.pdf UPDATE: The link above no longer works but I have added the 3 page article to this post. UPDATE: Here is a link which does work http://ohiopacket.org/files/docs/Powersup.pdf Thanks wbefield. 4) Dell NPS-730AB 12V 60A supply https://www.rcgroups.com/forums/show...&postcount=375 4) HP/Compaq Proliant DL380 G4 575w Power Supply, 406393-001 Series ESP135 Model No PS-3601-1C GPN:367238-501 PartNo:366982-501 Spares No:406393-001 https://www.rcgroups.com/forums/show...&postcount=385 5) TJinTech has a "how to" on the HP model DPS-600PB series ESP135 PS and also using two to get 24V with detailed instructions on his web site at https://sites.google.com/site/tjingu...arging-how-tos 6) Dell Server PSU - Model NPS330BB A https://www.rcgroups.com/forums/show...light=nps330bb 7) How To for Dell NPS-730AB A REV A01 taken from Dell Power Edge 2600 max 13,5 Volt 60 Amps https://www.rcgroups.com/forums/show...b#post17197180 8) Dell PowerEdge 2850 power supply, 12V 57A (700W) Model #: Dell NPS-700AB https://www.rcgroups.com/forums/show...&postcount=408 9) HP ESP-115 (30 amps) https://www.rcgroups.com/forums/show...&postcount=379 10) Fujitsu-Siemens Primepower 450 server ps https://www.rcgroups.com/forums/show....php?t=1263123 11) Dell 7000814-0000 700W PSU https://www.rcgroups.com/forums/show...&postcount=154 12) Hp PS3381-1C1 PSU https://www.rcgroups.com/forums/show...92&postcount=7 13) HP 511777-001 460W 12V PSU https://www.rcgroups.com/forums/show...&postcount=167 14) Dell ASTN 7000245 Poweredge 6650 PS for 72 amps at 12v. https://www.rcgroups.com/forums/show...&postcount=457 15) Esp 108 (DPS-450cb) PSU full pinout https://www.rcgroups.com/forums/show....php?t=1005309 Original post at https://www.rcgroups.com/forums/show...3&postcount=13 16) Dell Poweredge 6650(7000245) PS - Voltage Adjust https://www.rcgroups.com/forums/show...&postcount=654 17) Dell Power Edge 4600 Server PS See two posts 601 and 602 here https://www.rcgroups.com/forums/show....php?t=1005309 18) Dell DPS-500CB A https://www.rcgroups.com/forums/show...&postcount=811 19) Delta DPS800GB-A https://www.rcgroups.com/forums/show....php?t=1005309 Posts 880 and 881 |
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Last edited by jj604; Apr 20, 2012 at 03:39 AM.
Reason: Updated with comment
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Sep 28, 2010, 04:08 PM
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View Post |
| lmlisak | |
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A moderator felt this post violated the following rule: Off Topic Advertisement.
It is temporarily hidden while lmlisak
edits it.
Show it to me anyway.
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Feb 15, 2011, 10:40 PM
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I have added the Dell model AA23300 550W unit to my page.
http://www.tjinguytech.com/my-projects/server-ps It has the same hot-swap connector wiring as the NPS-700AB, which is also on the page. |
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Feb 20, 2011, 07:53 PM
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NPS-700AB Dell 2850 fan switch
I think the below picture shows how to add a fan switch to go from 'JET' speed to 'OK' speed.
 https://www.rcgroups.com/forums/show...&postcount=444 |
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Last edited by KiloOne; Feb 20, 2011 at 08:01 PM.
Reason: Removed pic
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Feb 21, 2011, 07:08 PM
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Automatic fan speed solution for DELL 2850 series |
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Apr 12, 2011, 09:26 PM
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Some big ones
Poweredge 6800 Full Pinout DPS-1570AB
Poweredge 6850 Full Pinout Poweredge R900 Full Pinout https://www.rcgroups.com/forums/show...9#post17954027 Posts 548 - 550 These are fairly large 120-140A supplies (some only work on 220V) with adjustable output voltage to 13.8 - 14V with NO FANS so they are quiet. xandrios is posting some great info on supplies in the thread A simple high quality 12Volt 100Amp Power Supply- Part1 (use the link above). |
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Apr 22, 2011, 08:58 AM
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DPS-600pb ESP135 PSU voltage and fan control. |
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Last edited by xandrios; Jan 30, 2012 at 02:42 PM.
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May 02, 2011, 05:49 AM
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IBM Bladecenter 39Y7352 2000w PSU DPS-200BB A Pinout
Pinout for the IBM Bladecenter 39Y7352 2000w 200v-240v only PS.
All of the important pins are included. Maximum output current is 164A at 12.2v. Voltage is adjustable up to 14.6v. Since this PS doesn't have an internal fan, you MUST mount one externally. NOTE xandrios advises "It seems that only revisions S8M and lower go to 14.6v. Higher revision numbers can only reach 13v." https://www.rcgroups.com/forums/show...&postcount=611 |
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Last edited by jj604; Oct 04, 2011 at 07:09 PM.
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May 15, 2011, 04:50 AM
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More from xandrios
ColdWatt 650w CWA2-0650-IT01 and Intel SR1550 PS Full Pinout
Full Pinout for Delta DPS-830AB PS. Full Pinout for Delta DPS-650QB PS. Dell Poweredge T710 R910 PS Full Pinout DPS-500EB PS Full Pinout Delta DPS-750EB PS Full Pinout Delta DPS-450GB Full Pinout Delta DPS-850FB PS Full Pinout Delta DPS-730AB PS Full Pinout Delta DPS-350PB Full Pinout Posts 679-710 here https://www.rcgroups.com/forums/show...9#post18238944 Delta DPS-520BB Full Pinout. Post 730 Delta DPS-600DB Full Pinout. Same as Delta DPS-450CB. Post 729 Full Pinouts for several 3Y Server PSUs. Pinouts for 3Y YM-2102ABR/AAR, YM-2102BBR, YM-2721ABR, YM-2821ABR, YM-2651BAR/CAR/CBR and YM-2451DAR/DBR PSUs. https://www.rcgroups.com/forums/show....php?t=1005309 Post 899 |
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Last edited by jj604; Aug 28, 2011 at 06:16 PM.
Reason: xandrios keeps adding new supplies!
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Jul 22, 2011, 09:28 AM
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See post #365 for information on increasing the voltage output of the Compaq HP DL580 Proliant Server Power.
https://www.rcgroups.com/forums/show....php?t=1170784 Don |
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Jul 30, 2011, 04:36 PM
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OVP disable and Fan speed control modifications for several power supplies
Delta DPS-700EB PS OVP disable modification.
https://www.rcgroups.com/forums/show...&postcount=844 Poweredge 6800 KD175 PS OVP Disable modification https://www.rcgroups.com/forums/show...&postcount=606 Poweredge 6800 PSU KD175 Fan Speed Control mod https://www.rcgroups.com/forums/show...&postcount=610 Poweredge 6800 JD200 PS OVP Disable modification https://www.rcgroups.com/forums/show...&postcount=939 Poweredge 6800 PSU JD200 Fan Speed Control mod https://www.rcgroups.com/forums/show...&postcount=940 |
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Last edited by xandrios; Jan 31, 2012 at 05:33 PM.
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Aug 08, 2011, 11:02 PM
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A neat case solution for twin supplies
Slightly OT but here's a solution I thought was very neat for people building twin 24V supplies. A lot simpler and quicker than starting from scratch.
https://www.rcgroups.com/forums/show...&postcount=225 |
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Aug 21, 2011, 02:14 PM
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HP fanless units.
All these versions have the same connection layout. Models: ESP128, 280127-001, 305447-001, 26 Amp (325W) DPS-460BB B, 361392-001, 325718-001, 36 Amp DPS-525EB A, 389997-001, 384232-001, 42 Amp https://www.rcgroups.com/forums/show....php?t=1465371 It is difficult to effectively cool them, if anyone is looking here for list of "known" PS, i would recommend something with integrated fans. These might be good if the plan is to build them inside a custom case. |
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