It's just a simple 48 to 12v converter to feed the mikrotik. I tested with a ict +48 supply and the 12v comes out fine, I'm 99% sure it will work on the wood bench, and about 90% sure it will work in a rack.
If it was true -48 I would assume the + terminal would be bonded with chassis ground? On Sat, Sep 19, 2020, 12:45 PM TJ Trout <t...@voltbb.com> wrote: > I think some of my devices have the chassis ground bonded with the > negative input terminals, I discovered this > because I am running a telecom rectifier shelf designed for -48 on a +48 > system because it's floating, but this > causes the + output to not be fused, so I practiced arc welding once. > > Strange, didn't know the 1100 had dc input, but it looks floating though > (per specs -48, 12-57 V) > > > > > On Sat, Sep 19, 2020 at 12:40 PM <ch...@wbmfg.com> wrote: > >> I don’t think I have ever seen a true +48 load. >> >> *From:* Ken Hohhof >> *Sent:* Saturday, September 19, 2020 1:29 PM >> *To:* 'AnimalFarm Microwave Users Group' >> *Subject:* Re: [AFMUG] -48 noob questions (mikrotik) >> >> >> Different situation, but I have several sites with 1100ahx4 powered with >> +48, even though Mikrotik says they take -48. I suspect you will find the >> same to be true on the CCR. >> >> >> >> Connect the – terminal to ground and the + terminal to +48, obviously you >> don’t want to apply reverse polarity by trying to connect +48 to the -48 >> terminal. >> >> >> >> I have some ccr1009 and ccr1036 but they are all AC powered, and I have >> no ccr1072, so I can’t answer your exact question. >> >> >> >> >> >> *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *TJ Trout >> *Sent:* Saturday, September 19, 2020 2:19 PM >> *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> >> *Subject:* [AFMUG] -48 noob questions (mikrotik) >> >> >> >> So I have a handful of ccr1072's that I want to run on our +48v plant, >> mikrotik sells a '-48v telecom' power supply and they insist it's not >> compatible with +48v. I ordered one for testing and both +/- input >> terminals have no reference to chassis ground. I went ahead and applied >> +48v and the power supply fired up (no smoke) and when measuring from >> chassis ground to the input terminals I see no difference in potential. >> >> >> >> Before I shove this into a $3,000 router I wanted to see what I may be >> missing here? >> >> ------------------------------ >> -- >> 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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