[Nut-upsuser] how normal is this temporary power loss for a single UPS?

[Gene Heskett]

On Monday, November 15, 2010 12:14:18 pm Jon Bendtsen did opine:

> Hi
> 
> Occasionally I get emails from my NUT system saying that one of my UPSes
> lost power for about a minute.
> 
> Losing power:
> 	Date: 15. nov 2010 17.40.25 CET
> 
> regaining power:
> 	Date: 15. nov 2010 17.41.34 CET
> 
> 69 seconds later. But why? None of the 3 other UPSes reports any power
> loss. What is the problem?
> 
> So I made some scripts that logs the input, output and frequency at the
> time of power loss, but they show nothing strange. Today results was:
> input	228.9 V
> 	output	228.9 V
> 
> Today the UPS was a APC Smart-UPS 3000 RM, but I have seen it with other
> UPSes as well.
> 
> 
> How normal is my experiences?
> 
Pretty normal if there are any Prolific usb parts in the path.  Although 69 
seconds is a much longer time frame than I have encountered.  If you are 
using a ser-usb adaptor, I have found the FTDI parts considerably more 
dependable in that regard. YMMV or course.

-- 
Cheers, Gene
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