Thanks for all the information. We've opted to get some Mwanwell DC-DC converters just to be on the safe side.
-- 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. ----- Original Message ----- > From: "TJ Trout" <t...@voltbb.com> > To: "AnimalFarm Microwave Users Group" <af@af.afmug.com> > Sent: Monday, May 2, 2022 4:15:23 PM > Subject: Re: [AFMUG] -48vdc site > 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 < [ mailto:dmmoff...@gmail.com | > 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 < [ mailto:af-boun...@af.afmug.com | af-boun...@af.afmug.com ] > On > Behalf Of castarritt > Sent: Monday, May 02, 2022 2:59 PM > To: AnimalFarm Microwave Users Group < [ mailto:af@af.afmug.com | > 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 < [ > mailto:ch...@totalhighspeed.net | 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 > [ http://www.totalhighspeed.com/ | 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 > [ mailto:AF@af.afmug.com | AF@af.afmug.com ] > [ http://af.afmug.com/mailman/listinfo/af_af.afmug.com | > http://af.afmug.com/mailman/listinfo/af_af.afmug.com ] > -- > AF mailing list > [ mailto:AF@af.afmug.com | AF@af.afmug.com ] > [ http://af.afmug.com/mailman/listinfo/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
