[asterisk-biz] backup power requirements for emergency calling

[C F]

I think you are wrong, what works for you in the City does NOT work
for me across the river in NJ. When I lived in the city the numbers
you gave were right, however for the last 3 years that I have seen
about six blackouts here in NJ where I live (BTW, we were NOT part of
the 2003 balckout in my town) 2 of them had to do with squirrels and
the like playing with the lines, the rest had to do with rain storms
that usualy meant a burned out connector to the transformer or a
burned out transformer (the burned transformer was not during a
storm).

On 4/14/06, alex at pilosoft.com <alex at pilosoft.com> wrote:
> On Fri, 14 Apr 2006, Andrew Kohlsmith wrote:
>
> > On Friday 14 April 2006 17:54, alex at pilosoft.com wrote:
> > > This is why asterisk guys should stick to doing asterisk, and leave
> > > facility management to people who know that.
> >
> > Seeing as I am a field applications engineer for an industrial power
> > electronics company with over ten years' of experience in this field, I
> > find your comment not only amusing, but also downright incorrect.
> In words of Randy Bush, I encourage my competitors to use you for the
> electrical engineering. *plonk*
>
> > Asterisk is my hobby, but one I am very good at. 20 minutes may have
> > been a bit of a stretch, but I typically see 50% usage on the UPS before
> > the genset is started.  You do *not* want your 600kW genset cycling for
> > 2-3 minutes whenever a squirrel or raccoon falls across the lines or
> > tries to nest in the transformer and trips the breaker, especially since
> > the breakers will automatically try to clear the fault 3 or so times
> > before staying tripped off and notifying a human.
> I don't know about squirrels in your neck of woods, but over here in New
> York, I've had my genset start exactly once in 5 years that wasn't a
> "major power outage". (Major power outage = 9/11 and 2003 blackout).
>
> Starting genset is a minor price to pay for assurance that your stuff is
> operating properly *at the moment of the outage* and UPS batteries won't
> be unnecessarily drained.
>
> Besides, no ATS will run genset for 2-3 minutes, they all have "30 minute
> minimum" and then "spindown" time.
>
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