Julian H. Stacey wrote:
midsummerdream.org> <[EMAIL PROTECTED]>
Comments: In-reply-to Udo van den Heuvel <[EMAIL PROTECTED]>
message dated "Fri, 15 Sep 2006 08:45:21 +0200."
--------
Udo van den Heuvel wrote:
Rob wrote:
Here's an updated set of info on my UPS, which includes what upsc
reports when the power is pulled by the computers are still on:
We had a power outage this morning and I did some monitoring on the UPS
which is connected to my small Linux box.
Battery charge did not go below 70% when the box died after about 5
minutes. No shutdown scripts, no warnings of shutdown, nothing.
When you add the info that Rob has (still going down after 5 minutes
although...) one might suspect a bug somewhere.
Start with basics: Suspect the battery. Even the microprocessor
inside the UPS that NUT talks to, neeeds good power, if the battery
suddenly drops, the microprocessor may not have time to warn NUT
of an approaching or actual failure, & NUT might not have time or power.
As I wrote to someone else recently on this list: A battery can
appear to have a good charge state (= voltage) even when it's gone
bad & developed a high internal resistance. That happened to me a
while back when I wasn't even running any software to control UPS.
UPS had been running for years, with charge state good (LEDs). I
pulled power, & it dropped out after maybe 10 secs ! 2 of the 4
batteries had good voltages but high internal resistance
I really doubt it is the battery. I have the same CyberPower unit, new
out of the box, and it does the same thing..
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