[HamWAN PSDR] VOTE: Power backup expansion project

[Bart Kus]

Sure, other UPS models exist, but I'm not sure where we'd be constrained 
for this much space.  This setup is 4U.

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:

Rattlesnake (Snoqualmie shack), which had no battery and a broken generator.
Rattlesnake (DNR shack), which has no battery and a seemingly working 
generator during the last outage.
Baldi (AT&T shack), which has a battery system but the brand new 
generator failed and we didn't load-shed quickly enough.
Baldi (Middle Wiztronics shack), which has a tiny UPS, and a seemingly 
working generator.
Baldi (North Wiztronics shack), which has no UPS, and a seemingly 
working generator.
East Tiger (HJR shack), which has no UPS and no generator.
East Tiger (Other shack), which has...unknown.
Gold, which has no UPS and unknown generator status.
Blyn, which has no UPS and unknown generator status.
Lookout, which has no UPS and unknown generator status.
BawFaw, which has no UPS and probably decent generator status.
CapitolPeak, which has a tiny UPS, and probably decent generator status.
Larch, which has...unknown.
Triangle, which has...unknown.
Buck, which has...unknown.

This list may not be exhaustive, I'm working from memory.

For these specific UPSes, I'd like to target Rattlesnake (both shacks).

--Bart


On 2/5/2021 1:43 PM, Kenny Richards wrote:
> Bart,
>
> Are there options for sites where we don't have access to that much 
> rack / physical space? (obviously with reduced runtime)
>
> 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.
>
> Thanks
> Kenny
>
>
>
>
> On Fri, Feb 5, 2021 at 12:41 PM Bart Kus <me at bartk.us 
> <mailto:me at bartk.us>> wrote:
>
>     Hello,
>
>     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:
>
>     https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-3000VA-120V-Rackmount-Tower/P-SUM3000RMXL2U
>     <https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-3000VA-120V-Rackmount-Tower/P-SUM3000RMXL2U>
>
>     And one external (and chainable!) battery expansion module:
>
>     https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-48V-Extended-Run-Battery-Pack/P-SUM48RMXLBP2U
>     <https://www.apc.com/shop/us/en/products/APC-Smart-UPS-XL-Modular-48V-Extended-Run-Battery-Pack/P-SUM48RMXLBP2U>
>
>     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. *The total cost for these two
>     systems is $963.71.*  One of them is deployed at Rattlesnake
>     ("Snoqualmie shack") already:
>
>     https://photos.app.goo.gl/HTomAzJUnrjuJ3bw8
>     <https://photos.app.goo.gl/HTomAzJUnrjuJ3bw8>
>
>     If we ever want to expand the battery capacity of these, we can
>     simply plug in more battery modules.
>
>     I'm hoping to deploy the 2nd system in the other building on
>     Rattlesnake ("DNR shack"), but that hasn't happened yet.
>
>     --Bart
>
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