[HamWAN PSDR] VOTE: Power backup expansion project

[Bart Kus]

The only thing for this vote is in bold, below.  It's just for the 2 
UPSes already purchased.  If HamWAN doesn't want to fund it, I'll eat it 
out of pocket or sell the equipment.

--Bart


On 2/5/2021 6:00 PM, Rob Salsgiver wrote:
>
> So the subject line calls for a vote, but I don’t see any specific 
> thing we’re voting for….
>
> Are we reimbursing you for the 2 UPS units, committing to the same 
> flavor at an undetermined number of sites, or just the idea to 
> implement backup power at much needed sites?
>
> I’m not against any of it, just want to know what specifically we’re 
> to vote on!
>
> Cheers,
>
> Rob
>
> *From:*PSDR [mailto:psdr-bounces at hamwan.org] *On Behalf Of *Bart Kus
> *Sent:* Friday, February 5, 2021 12:42 PM
> *To:* Puget Sound Data Ring
> *Subject:* [HamWAN PSDR] VOTE: Power backup expansion project
>
> 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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