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Sure, other UPS models exist, but I'm not sure where we'd be
constrained for this much space. This setup is 4U.<br>
<br>
As you correctly point out, several of our sites already have great
power backup systems. Haystack (3-4 weeks on battery, years on
propane), SnoDEM (well maintained power system), Beacon (large
battery bank), CapitolPark (another large battery bank), CampMurray
(surely a good power system). However, the sites that worry me are:<br>
<br>
Rattlesnake (Snoqualmie shack), which had no battery and a broken
generator.<br>
Rattlesnake (DNR shack), which has no battery and a seemingly
working generator during the last outage.<br>
Baldi (AT&T shack), which has a battery system but the brand new
generator failed and we didn't load-shed quickly enough.<br>
Baldi (Middle Wiztronics shack), which has a tiny UPS, and a
seemingly working generator.<br>
Baldi (North Wiztronics shack), which has no UPS, and a seemingly
working generator.<br>
East Tiger (HJR shack), which has no UPS and no generator.<br>
East Tiger (Other shack), which has...unknown.<br>
Gold, which has no UPS and unknown generator status.<br>
Blyn, which has no UPS and unknown generator status.<br>
Lookout, which has no UPS and unknown generator status.<br>
BawFaw, which has no UPS and probably decent generator status.<br>
CapitolPeak, which has a tiny UPS, and probably decent generator
status.<br>
Larch, which has...unknown.<br>
Triangle, which has...unknown.<br>
Buck, which has...unknown.<br>
<br>
This list may not be exhaustive, I'm working from memory.<br>
<br>
For these specific UPSes, I'd like to target Rattlesnake (both
shacks).<br>
<br>
--Bart<br>
<br>
<br>
<div class="moz-cite-prefix">On 2/5/2021 1:43 PM, Kenny Richards
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAHEUKbKzkdXMdfrOvyuXbVbTSHB7b+4zTYbgpaa=zwzizXyqdg@mail.gmail.com">
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<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"
moz-do-not-send="true">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" 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"
target="_blank" 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"
target="_blank" 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<br>
<br>
</div>
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