Our issues is exclusively with AF24’s and APC SU750’s. On a Switching event the AF24 lock up about 50% of the time. We have been changing the APC750 with the newer APC SUA750 and the problem vanishes… believe me we have trie everything, grounding, changing UBNT POE, Surge Suppressors, you name it.
2 things have only worked: Newer APC models with any POE Powering the the AF24 with a dc-dc converter connected to the site batteries and into a McCown DC injector From: Af <af-boun...@afmug.com<mailto:af-boun...@afmug.com>> on behalf of Colin Stanners <cstann...@gmail.com<mailto:cstann...@gmail.com>> Reply-To: "af@afmug.com<mailto:af@afmug.com>" <af@afmug.com<mailto:af@afmug.com>> Date: Thursday, July 27, 2017 at 9:53 PM To: "af@afmug.com<mailto:af@afmug.com>" <af@afmug.com<mailto:af@afmug.com>> Subject: Re: [AFMUG] Is there such a thing as a AC Capacitor? I forgot to mention: -if it's a non-sinewave UPS, it could be that the powersupply is designed to expect sinewave AC. -are you certain that it's not a grounding issue or other stray voltage between the circuits? Gino A. Villarini President Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 [cid:aeronet-logo_310cfc3e-6691-4f69-bd49-b37b834b9238.png] On Thu, Jul 27, 2017 at 8:50 PM, Colin Stanners <cstann...@gmail.com<mailto:cstann...@gmail.com>> wrote: Gino, can you say which gear? Most UPSes switch pretty much "instantly" (less than one AC cycle, which lasts 16ms) so a PSU that wouldn't last one AC cycle must have very questionable engineering. Or assuming that you use APC UPSes, you can change the sensitivity setting to switch quicker: http://www.apc.com/us/en/faqs/FA156514/ On Thu, Jul 27, 2017 at 2:57 PM, Gino A. Villarini <g...@aeronetpr.com<mailto:g...@aeronetpr.com>> wrote: Got some gear that hangs when UPS switches from AC power to Batts… needs something to power AC for microseconds Gino A. Villarini President Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968 [cid:aeronet-logo_310cfc3e-6691-4f69-bd49-b37b834b9238.png]
