I was gonna say the same thing. RSD also doesn't have a cooling
fan....one less thing to fail.
In either case get a few #6 bolts (or similar size metric) and you can
mount them to a 1U blank.
On 7/2/2021 1:54 PM, Josh Baird wrote:
Do not use the "SD" series. Look for the RSD series instead. The SD
series has issues with current inrush.
On Fri, Jul 2, 2021 at 1:52 PM castarritt <[email protected]
<mailto:[email protected]>> wrote:
Thanks for the info. I did check the chassis ground vs dc return
on my dragonwave radios, and they weren't bonded. I'll check with
dwave to see if they are cool with 0v input and +48v return. If
so, we will buy +48v DC systems in the future.
For the -48v ICT we already have, I was looking at this Meanwell
isolated DC-DC converter; do you think it would work?
https://www.mouser.com/ProductDetail/MEAN-WELL/SD-500L-48?qs=umBTOZqEewis66%252Betk6pyQ%3D%3D
<https://www.mouser.com/ProductDetail/MEAN-WELL/SD-500L-48?qs=umBTOZqEewis66%252Betk6pyQ%3D%3D>
On Fri, Jul 2, 2021 at 12:18 PM TJ Trout <[email protected]
<mailto:[email protected]>> wrote:
Yes you can put an isolated 48v dc to DC supply to isolate -48
from +48 (a meanwell brand would work) needs to be an isolated
converter
Also fyi that most of the '-48' equipment I've tested hasn't
had a chassis reference to either of the DC input terminals,
so thus far I've ran as +48 on everything.
48v is 48v, difference between -48 and +48 being which output
terminal may be bounded to chassis ground.
On Fri, Jul 2, 2021, 9:33 AM castarritt <[email protected]
<mailto:[email protected]>> wrote:
Tushar wants me to figure out a good solution for our
first site to be converted to DC power.
APs I want to power through a rack injector are:
3x 450M 5Ghz
2x 450i 5Ghz
3x 450 5Ghz
5x ePMP force200 for ptp customers
The force200s don't use sync, but I would like all the
others to have sync over power.
Currently we have an ICT-IP-BMMD -48v shelf and one of
their isolated 48v to 24v converters.
Router is an MT CCR converted to -48v with their DC power
supplies. Switch is a CRS that will be wired to run off
the ICT +24v converter. We also have 6x dwave backhauls
that will all be fine with -48v.
Problem is, without a +48v source, I can't figure out a
way to power all 13 radios through a single rack injector
without giving up sync via power on the 450i APs. Is
there an easy way to get +48v off of either the -48v
or +24v ICT supplies, or should I just plan on adding a
second rack injector?
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