48 volts is 48 volts the only difference is +48 your - is grounded, -48 your positive is grounded, if you don't make a connection between +/- to the tower/rack etc it's floating
Must check psu and input devices if they have a chassis reference, i.e. any continuity between the chassis and the input or output terminals On Tue, Feb 7, 2023 at 6:27 PM Sterling Jacobson <sterl...@avative.com> wrote: > I've got a few projects where I just need a simple telco -48v power supply > from AC plug. > > I've got a lot of the "normal" PS units lying around. > > But what does it take to power a -48v device? > > Is it something I can/should just rig from a standard AC to DC 48v PS? > > Or is there something out there I should purchase instead that is fairly > cheap? > > I'm using ITC Rectifiers for my -48v plant in several areas, I just > haven't built out the DC plant in all areas but have one or two units that > need it already on site. > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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