This is my first foray into -48v.
It looks like the Meanwell RSD-200C-48 is what I need. Input is
33-63vdc. So on the Input side, the -48 will go to the Negative
terminal, and the ground will go to Positive. Then on the Output side I
just wire it normal? We are not responsible for the radio mount
location, so I don't know if they are tying the Ground back to their
cabinet or not. Will there be other issues with the equipment grounds
on the tower after it goes through the DC-DC Power supply?
Nate
On 11/1/2018 10:24 AM, Josh Baird wrote:
As far as I know, the EdgePoint will smoke if you power it with
-48VDC. You'll need a DC-DC converter in between your -48VDC plant
and the EdgePoint. I would recommend Meanwell RSD.
More info:
https://community.ubnt.com/t5/EdgeSwitch/A-nightmare-with-Edgepoint-S16/td-p/1611552/page/2
On Thu, Nov 1, 2018 at 11:21 AM Nate Burke <[email protected]
<mailto:[email protected]>> wrote:
I know that +/-48 is oft discussed, but I still can't quite keep
track
of the caveats with different equipment. I need to put an
Edgepoint S16
at a Telco cabinet, and they will supply me power off of their -48v
plant. Do I need to do anything special since the Edgepoint does
auto
polarity on the DC Input? I'm guessing that since it's auto
polarity,
the case and ground are isolated from the input lines.
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