<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Bart,</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Are there options for sites where we don't have access to that much rack / physical space? (obviously with reduced runtime)</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Which set of sites would be targeted? I'm guessing SnoDEM, CapitolPark and Beacon might not need the same level of backup as Baldi, Rattlesnake, Capital Peak, etc.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Thanks</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">Kenny</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Feb 5, 2021 at 12:41 PM Bart Kus <<a href="mailto:me@bartk.us">me@bartk.us</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
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" target="_blank">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" target="_blank">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" target="_blank">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<br>
<br>
</div>
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</blockquote></div>