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

[Svein Skogen (Listmail account)]

On 15.11.2010 17:56, Jon Bendtsen wrote:
> 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?

Depends. Both my cyberpower UPSes does something similar (self tests,
actually). One does so nightly, one weekly.

//Svein

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