Server Power Supply HP PS-3701-1C: Pin Out and Dry Start Procedure

Hello.
I got this server power supply, which is to be used for slightly different purposes and I need information on: description of the power supply outputs and how to start "dry" ...

Are you able to help?
Thanks in advance

Regards
Robert

Hello.
If you think that such laconic information without documenting it with photos from the sticker and the power supply itself with its main plugs is to be omitted.

TONI_2003 wrote:

Hello.
If you think that such laconic information without documenting it with photos from the sticker and the power supply itself with its main plugs is to be omitted.

From the above I understand that more info and total graphic and music documentation is needed....

I'm already correcting myself by posting a photo from some shop (I hope I won't break the rules)...
photo of the power supply

and completing the data:
the power supply was most often used in the ML350 G4 server of the ProLiant series

I'll post more detailed pics if needed...

Regards
Robert

There is always a need when you start a topic with the repair of a power supply, especially in the case of such a rare model. We are waiting for photos, also of the inside. You can guess the pins of some voltages by looking at the pins of the wires on the board itself.

Okay, here's the picture...


Regards
Robert

If you can't find +5V AUX after connecting to the 230V mains, you will not be able to start this power supply alone, and it is probably not a standalone unit ....

It turns out that these 5V occur ... (again, the description is missing - my fault).
After connecting to the mains, the fan turns on and the value of 5V appears. Are you suggesting to connect any load to these 5V? I suspect that this is not enough - in other types of server power supplies, even HP, unfortunately, you have to short the contacts (Power ON or Stand-by type with GND) ... The only question is which of the outputs correspond to these connections?

edit: 26 Mar 2011 20:48
Hello after a short break...

I managed to get to my power supply so-called. backplane with connections and here's another problem. The 20 and 24 pin molex plugs are probably connected differently than in the ATX standards (those are the HP bears) - here's the question: does anyone from the esteemed group of electrode enthusiasts know the description of these plugs?

Regards
Robert

Try to bite it from the other side - look in the documentation of the boards with which the power supply worked.
I had a similar problem and just using the motherboard manual I was able to solve it.

Unfortunately, I couldn't find such documentation that would contain the information I need...
Coming back to the power supply - I managed to start it, and the connection shown is in the attached photo.

I hope that such a connection will suffice and to find out about it, there are still load tests to be performed.
I have a new goal ahead of me: I would like the target power plant consisting of two such power supplies to give both 12V and 24V.

Questions:
1. What to pay attention to?
2. How to approach the topic?
3. It is true that the housings will not touch each other, but should you try to "disconnect" the ground from the housing of at least one of them?
4. Does the drawing correctly show that the ground of the 2 power supplies should not be connected?


Regards
Robert

Here I will answer you as an electrician - "grounding", i.e. the protective conductor must be connected. It does not matter whether it will be the PE conductor of the power line or the equipotential bonding, the potentials must be equalized on both housings.

Well, that's the answer to the question. No. 4 is - thanks! - I'm waiting for advice on the others so as not to burn something...

Just take into account that I am speaking looking at this in terms of the safety of using electrical devices.
To common sense, the combination you're proposing doesn't sound right.
GND (-) from the power supply output is the same potential as the housing, the housings of both power supplies also have the same potential (at least according to me they must have it). By shorting +12V of one of the power supplies with GND (-) of the other you will make a short circuit.
I don't have enough knowledge to predict what can be done with this contraption from the "electronic" side. Personally, I have not encountered the "bridging" of 2 impulse power supplies in order to double the voltage and I do not think it is possible.

When I started to modify the power supply, I came across this this page - but it turns out that it may not be so simple in my case. At the beginning, I will check whether the ground, let's say at the input, is connected to the ground (GND at the output) ...

As far as I am good in English, after a cursory reading of the linked page, I can agree with the solution presented there.
The guest solved the problem of the need to "ground" the enclosures by additional insulation of the finished device. This solution is correct from the point of view of electric shock protection.
If you close these power supplies in a non-conductive housing, you do not need to connect the PE wire. If you additionally isolate them from each other, I think that they will work without any problems as 2x12 or 1x24V.

However, if I would like to leave the ground wire, is the variant:
- PE cable connected to two power supplies, housings separated from ground (GND - output), power supplies isolated from each other - will it be in line with the art and has a chance to "survive", especially when it comes to electronics?

You will simply use a different variant of "isolation" - no one should be hurt.
I'm just curious if it will be so easy to isolate the electronics from the housing, in a regular AT / ATX power supply, 4 washers are enough, interesting how it is in the case of your model.
As for electronics - I've already written, my knowledge in this area is too modest to comment authoritatively. It should work for common sense.

Separation is then even easier than in the ATX power supply... Just remove the contact point marked in the photo below (this is the only place where the housing connects to the electronic part).



Regards
Robert

HP model: PS-3701-1C - pin out - start zasilacza.