On Sat, 21 Nov 2009 12:50:43 -0800 (PST), NT wrote:

As your run time needs are so short, the only real issue is the power
output capability of the UPS

Always assuming that the auto recloser always resets. The one in the
11kv line that feeds us does *unless* it trips 3 times in less than a
minute or something like that. If does get too many trips in a period
it latches off and has to be manually reset, hopefully after the
fault has been found and cleared.

Having the connected PC's shutdown gracefully on power failure (or a
minute or two after) is sensible. Not sure how one would arrange that
with a USB UPS connected to a window box. I think there is only a NUT
client for doze.

As for the REC "looking into it", yeah sure they are... 5 clicks is a
nice short walk. Walk the line and see if there are any bits of tree
within a couple of feet of the line (think wind blowing a twig
against it). It's the wrong time of year for tree growth though,
that's normally a late spring early summer problem and a single bit
of fresh tree doesn't normally create more than a few outages as it
gets blown up and killed when it touches the line. A bigger older bit
of tree will last longer of course.

--
Cheers
Dave.