Yeah, I manually turned on the inverter and left the input breaker tripped/off and it ran on battery for about 2 hours until I went and flipped the input breaker switch back on.
It did have an Overload event just prior to the breaker trip, which makes some sense I guess. Not sure there was an actual overload or not, but maybe that's the case. I have everything with two power supplies split between the UPS on one and normal power on the other. I don't have any devices with problems or reboots on Normal power during this so called overload event from the UPS. So Chuck may be right, the UPS might just be breaking slowly. I'll give Alpha a call and see what they say. This particular unit is out of warranty, but I have others that are new. -----Original Message----- From: Af [mailto:af-boun...@afmug.com] On Behalf Of George Skorup Sent: Tuesday, June 13, 2017 1:15 PM To: af@afmug.com Subject: Re: [AFMUG] Alpha UPS AC Input Breaker Open I have no experience with Alpha stuff, but, stupid question... are you sure the batteries are good? On 6/13/2017 12:00 PM, Chuck McCown wrote: > Sounds like an internal inverter component is intermittently failing. > Most likely an aluminum electrolytic capacitor. > It will probably get more frequent until it totally dies. > > -----Original Message----- From: Sterling Jacobson > Sent: Tuesday, June 13, 2017 10:56 AM > To: 'af@afmug.com' > Subject: [AFMUG] Alpha UPS AC Input Breaker Open > > I've never seen this before on my UPS, but the AC Input breaker keeps > tripping open on my Alpha about once a day. > > Nothing else in the cabinet seems to be affected. > > No other equipment seems to report any problems with the AC. > > I'm not a guru on these things, what would this indicate? > > Also, when it does this it shuts off power to the AC output on the UPS > instead of going on inverter.
