So RSD-500C-48 then? On Fri, Jul 2, 2021 at 1:06 PM Adam Moffett <dmmoff...@gmail.com> wrote:
> 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 <castarr...@gmail.com> 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 >> >> On Fri, Jul 2, 2021 at 12:18 PM TJ Trout <t...@voltbb.com> 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 <castarr...@gmail.com> 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? >>>> -- >>>> AF mailing list >>>> AF@af.afmug.com >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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