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: '[email protected]'
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.
