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The UPS was not installed at the time of the outage. The outage
triggered me buying said UPSes and deploying the first one the day
after the storm.<br>
<br>
Your experience was likely due to the DNR shack @ Rattlesnake having
a working generator, and even though we did lose power, the
generator did kick on to bring us back up. I've since observed many
more power outages at the DNR building (all equipment logging
reboots at the same time). This is where a UPS would help things
out.<br>
<br>
--Bart<br>
<br>
<br>
<div class="moz-cite-prefix">On 2/5/2021 5:46 PM, Stephen Kangas
wrote:<br>
</div>
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<p class="MsoNormal">Bart, <o:p></o:p></p>
<p class="MsoNormal">That’s interesting that one of the UPS
units is installed currently at the Rattlesnake site. I can
attest to the valued performance of that, as when that
widespread power outage occurred, the Rattlesnake DMR repeater
down during the outage, yet HamWan continued to be operational
at that same site. I can guess that the UPS and emergency
generator system at that SECAST shack did not work, and yet
your UPS did. I was able to use HamWan for Winlink email
communications with members of our North Bend ARES Team,
demonstrating the value and resiliency of that HamWan site.
It’s good that you’re aiming to replicate that reliability to
other HamWan sites.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">73 de Stephen W9SK (North Bend)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b>From:</b> PSDR
<a class="moz-txt-link-rfc2396E" href="mailto:psdr-bounces@hamwan.org"><psdr-bounces@hamwan.org></a> <b>On Behalf Of </b>Bart
Kus<br>
<b>Sent:</b> Friday, February 05, 2021 12:42 PM<br>
<b>To:</b> Puget Sound Data Ring <a class="moz-txt-link-rfc2396E" href="mailto:psdr@hamwan.org"><psdr@hamwan.org></a><br>
<b>Subject:</b> [HamWAN PSDR] VOTE: Power backup expansion
project<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<br>
<br>
During the recent wind storm event in January, HamWAN lost
utility power to some sites. This triggered network outages
that affected users and repeaters that relied on those sites.
It was far from our finest hour. "When all else fails",
HamWAN should not be the first in line. I'd like for 2021 to
be a year we focus on reliability. Having a reliable power
system at every site seems like a good place to start that
journey. In each of the power failures in January, a
generator system failed to activate. In these cases, we need
at least 24 hours to mount a response in fixing generators.
This means our battery backup systems should be sized for at
least 24 hours of runtime. I have acquired a couple UPSes
that can achieve this. They are composed of the main UPS:<br>
<br>
<a
href="https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-3000VA-120V-Rackmount-Tower/P-SUM3000RMXL2U"
moz-do-not-send="true">https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-3000VA-120V-Rackmount-Tower/P-SUM3000RMXL2U</a><br>
<br>
And one external (and chainable!) battery expansion module:<br>
<br>
<a
href="https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-48V-Extended-Run-Battery-Pack/P-SUM48RMXLBP2U"
moz-do-not-send="true">https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-48V-Extended-Run-Battery-Pack/P-SUM48RMXLBP2U</a><br>
<br>
They also feature an AP9631 network interface module in each
UPS, so we can monitor and control the power system. As you
can see, each UPS costs about $3600 new, so the two I acquired
would be $7,200 new. However, I managed to find used units
and purchased brand new batteries for them. <b>The total
cost for these two systems is $963.71.</b> One of them is
deployed at Rattlesnake ("Snoqualmie shack") already:<br>
<br>
<a href="https://photos.app.goo.gl/HTomAzJUnrjuJ3bw8"
moz-do-not-send="true">https://photos.app.goo.gl/HTomAzJUnrjuJ3bw8</a><br>
<br>
If we ever want to expand the battery capacity of these, we
can simply plug in more battery modules.<br>
<br>
I'm hoping to deploy the 2nd system in the other building on
Rattlesnake ("DNR shack"), but that hasn't happened yet.<br>
<br>
--Bart<o:p></o:p></p>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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