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?
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