[Fourlanders] 48-volt DC fan tray

[Tom McElroy]

Hi Kim,
As soon as you see "48 volts" it is likely that it came from a telco rack,
since landlines operate with -48VDC.
You can get a "MEAN WELL LRS-350-48 350.4W 48V 7.3 Amp Single Output
Switchable Power" for not a lot of cash.
7.3 amps might be enough, but I don't know what the individual current
draw is for each fan, but at 48 volts, it'll be relatively low.

73
Tom - W4SDR



On Sun, Dec 18, 2022 at 2:06 PM Kim <whensley11 at comcast.net> wrote:

> A few years ago I purchased (used) a Fujitsu 4100 fan tray.  It's
> comprised of ten (10) 48-VDC fans.
>
> It uses a parallel computer-type cable for power and alarms.  I'm not
> interested in the alarms.  I've not found any documentation about the fan
> tray and/or cable.
>
> Any of you have any information and/or ideas on how to power these fans?
>
> From what I can tell and the fan wires go into a circuit board.  If need
> be, I can bare it down to those wires.
>
> Tnx & 73,
>
> Kim - WG8S
>
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>
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