we currently will stay AC up top mostly to various meanwell DC power supplies. Everything that is AC is internally DC now anyway, with the exception of the fans, but those can be swapped. Nate, sounds like youre already doing pretty much the same as us so ill take it as probably a non issue.
I have an ethernet over powerline adapter on a 100' extension cord off the APC output to get the management card into the network up top. it seems to not mind square wave for the multiplexing. On Thu, Jul 8, 2021 at 2:18 PM Nate Burke <[email protected]> wrote: > If you're running AC up the tower, there are probably wide voltage DC > transformers (100-240v) for everything up top that would clean it up > anyway. We have a 200' Grain leg where we have an APC 750 UPS at the > bottom. 120vac on #12 wire to the top and nothing has ever complained. > There are several Meanwell AC/DC transformers at the top for 24v/48V, along > with normal POE injectors (ubnt/cambium). I've never measured the voltage > drop, but it has never been an issue. > > On 7/8/2021 2:07 PM, Josh Luthman wrote: > > Are you doing DC up the grain leg or AC? > > Josh Luthman > 24/7 Help Desk: 937-552-2340 > Direct: 937-552-2343 > 1100 Wayne St > Suite 1337 > Troy, OH 45373 > > > On Thu, Jul 8, 2021 at 10:46 AM Jan-GAMs <[email protected]> wrote: > >> It's a square wave which a transformer would clean up. The drop wouldn't >> change and a buck-boost would up the voltage for the end-point. >> On 7/8/21 7:15 AM, Steve Jones wrote: >> >> We are considering moving our APCs down to the bottom of some of the >> grain elevators we have our enclosures up top of. There are a multitute of >> reasons for this, right wrong or indifferent. >> >> The concern i have is the voltage drop. The output of APC UPS as I >> understand is not pure sine wave, but a square wave. Will this impact >> voltage drop calculations? >> >> -- >> AF mailing list >> [email protected] >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
-- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
