many devices now are isolated, you can check the router case to each terminal +/- on the input and see if any are referenced, if not it will work on -48 or +48. For example the ccr1072 and now ccr2116,2216, etc have a '-48v' power supply, but it's actually isolated and worked on either.
48v is 48v, as chuck said the only difference is which side +/- is grounded to the rack, tower, etc On Mon, May 2, 2022 at 1:32 PM <dmmoff...@gmail.com> wrote: > I keep Meanwell RSD-150C-48 in stock. I’d strongly suggest the RSD rather > than the SD model. SD is slightly cheaper, but RSD handles faults better. > > > > The important part is C-48, that’s 48 in and 48 out. > > 150 is max wattage. > > > > The dimensions are such that you can bolt it to the back of a 1U blank > panel and it will occupy 1RU without a shelf. > > > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *castarritt > *Sent:* Monday, May 02, 2022 2:59 PM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] -48vdc site > > > > I asked this list the same thing a while back and the answer was Meanwell > RSD-500C-48. You can probably get away with a lower power rating than the > 500 watt I chose if you are only powering a 'tik and not a pile of Cambium > radios like I was. > > > > On Mon, May 2, 2022 at 1:48 PM Christopher Tyler <ch...@totalhighspeed.net> > wrote: > > Need some help from the smarter than me electrical engineers here on the > list... > > What is the best way to power a Mikrotik router that takes +18-56vdc from > -48vdc source? Providing part numbers or model numbers would be greatly > appreciated. > > We tried the redneck engineering approach of just reversing the polarity > and it popped the fuse, nice little light show, but ultimately unproductive. > > -- > Christopher Tyler > Senior Network Engineer > MTCRE/MTCNA/MTCTCE/MTCWE > > Total Highspeed Internet Solutions > 1091 W. Kathryn Street > Nixa, MO 65714 > (417) 851-1107 x. 9002 > www.totalhighspeed.com > > This institution is an equal opportunity provider and employer. > Esta institución es un proveedor de servicios con igualdad de > oportunidades. > > -- > 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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