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Home > Archive > Emergency services > May 2005 > Re: When You Dial 911, Can Help Find You?
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Re: When You Dial 911, Can Help Find You?
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| In article <cb3091hs237l5u0hanqs1lhmfojns83uke@4ax.com>, moc.enilepip@ykkams wrote:
> As far as battery power, if HVAC is
>not continued, the equipment will fail out even if the batteries have
>remaining capacity.
Depends upon location and time of year. Also, some companies are taking a
serious look at using DC HVAC systems, which will run off of the batteries.
>Some of the sites out here have generator connections and manual
>transfer switches.
This makes sense only in manned locations.
The batteries float volatile settings, but when the
>power is out, so is the system.
Can you elaborate on this ? Nominal float voltage from the DC power system is
-54Vdc. Wet cell or VRLA battery systems are composed of 24 * 2V cells. For
those with Low Voltage Disconnect (LVDs), the setting is usually -42Vdc.
>As an emergency manager, my perennial question to wireless providers -
>especially to those who purport to be "interoperability solutions" is:
>Since the sites have a jack and a manual transfer switch, when a
>technological emergency happens and there is no power, who gets the
>resources??? What guarantee is there that they will support my
>operation and not run with their resources to the "big" city 45 miles
>away?
The good thing about the wireless network is that there is usually another
cell site that can provide service, in the event a closer site goes down.
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