Ok, that makes sense that the power supply input/output are isolated.
In the Edgepoint or the Airfiber 24, will there be any issues with
grounding the equipment with the ground lugs, if the tower ground is
tied back to the cabinet ground?
Nate
On 11/5/2018 4:32 PM, Mark Radabaugh wrote:
Correct. If you get it wrong it doesn’t blow up the RSD, it just
doesn’t do anything.
Both the input and output of the RSD are isolated - none of the legs
will be tied to ground unless you do it externally.
Mark
On Nov 5, 2018, at 5:11 PM, Nate Burke <n...@blastcomm.com
<mailto:n...@blastcomm.com>> wrote:
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 <n...@blastcomm.com> 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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