[HamWAN PSDR] VOTE: Power backup expansion project

[Carl Leon]

Correct, Buck is on generator year round.

-----Original Message-----
From: PSDR <psdr-bounces at hamwan.org> On Behalf Of David C. Jenner via PSDR
Sent: Friday, February 5, 2021 4:42 PM
To: Puget Sound Data Ring <psdr at hamwan.org>; Bart Kus <me at bartk.us>
Subject: Re: [HamWAN PSDR] VOTE: Power backup expansion project

Doesn't Buck Mtn run on generators all the time?  With maybe 6 months or more fuel?

73,
Dave
K7DCJ


On 2/5/21 12:41 PM, Bart Kus 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-3000V
> A-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-E
> xtended-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
> 
> 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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> 

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