Nut upsuser - Jul 2010 - power on settings after a power failure

On 07/14/10 11:27, Arjen de Korte wrote:
> the UPS should power off(and restart when the power comes back
  Can I set any UPS to only provide power after the battery is charged 
to a certain level?
Or better yet, a certain length on consecutive time when the power has 
been on.

I'd be worried about flapping, where the power goes on and off.

On Fri, Jul 16, 2010 at 05:19, James <bjlockie at lockie.ca>
wrote:
>
> ?Can I set any UPS to only provide power after the battery is charged to a
> certain level?
> Or better yet, a certain length on consecutive time when the power has been
> on.
>
> I'd be worried about flapping, where the power goes on and off.
ISTR that support for that kind of feature can only be done in the UPS
itself, and not all support it.

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Citeren James <bjlockie op lockie.ca>:
> Can I set any UPS to only provide power after the battery is charged  
> to a certain level?
No, it depends on the UPS. You won't find this on a low-end UPS, but  
some mid- and most high-end devices support this. If not available, a  
workaround is described in the 'docs/shutdown.txt' that came with the  
NUT sources. If this is important to you, I'd replace the UPS if it  
isn't supported.
> Or better yet, a certain length on consecutive time when the power  
> has been on.
If the UPS is able to switch back on based on state of charge of the  
battery, chances are that the reported is fairly accurate. In that  
case, the state of charge would be better.

Best regards, Arjen
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