UPS electrical problem

[Jerry Feldman]

On 06/29/2010 09:33 PM, Greg Rundlett (freephile) wrote:
> I have my Linux "Media Center", a Dell Studio Hybrid PC, 2 1TB Fantom
> external drives and a 25" lcd monitor plugged into an APC Backups Pro
> 500 UPS on the battery+surge protection side.
>
> Within the past week, when the household thermostat kicks on or off
> the central A/C system, the PC shuts off instantaneously.  Other
> electronics do not seem to be affected, although they probably are.
>  It's just harder to confirm since a flicker in the drive or monitor
> power would be hard to observe.   I assume that a sag or surge gets
> through the UPS and affects my PC, but don't understand how that can
> happen when I thought that's what the UPS was supposed to prevent.
>  And, short of replacing the UPS, I'm not sure what to do about it.
>  Is there something I can do to prevent this sag/surge event -- since
> it's likely to affect something else?
>
On the BLU list we were discussing online backlups, and Jack Coats sent
me some email regarding both surge suppressors and UPS systems. Not only
can the battery go bad, but the UPS itself can be toast. This is also
true for surge suppressors.

-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
PGP key id: 537C5846
PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB  CA3B 4607 4319 537C 5846


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