[HamWAN PSDR] [Netops] VOTE: 4 12V / 119Ah AGM batteries & DC PDU for Gold Mtn
me at bartk.us
Wed Mar 21 23:01:50 PDT 2018
Bank should be ~5.7kWh. 3 sectors up there and 3 NetMetal modems, as
well as a 900MHz modem and a CRS125 switch. The sectors should take
about 5.5W each, the NetMetals, 900MHz and CRS125 weren't measured but
let's assume 10W each there. So that looks like 65W total to me, for a
runtime of ~88 hours, or 3.7 days. And oh yeah, the PDU draws a little
too. We can also do load-shedding manually during an outage.
On 3/21/2018 5:41 PM, Darcy Buskermolen wrote:
> My question would be, what kind of runtime will this proposal provide ?
> Sent on the go, from somewhere other than here.
> -------- Original message --------
> From: Doug Kingston <dpk at randomnotes.org>
> Date: 2018-03-21 17:39 (GMT-08:00)
> To: Puget Sound Data Ring <psdr at hamwan.org>
> Cc: netops at hamwan.org
> Subject: Re: [HamWAN PSDR] VOTE: 4 12V / 119Ah AGM batteries & DC PDU
> for Gold Mtn
> As a donating member and representing the ACS COMT team, I'll +1
> Bart's proposal.
> On Wed, Mar 21, 2018 at 12:36 PM, Bart Kus <me at bartk.us
> <mailto:me at bartk.us>> wrote:
> As some of you have noticed, Gold Mtn has been having power issues
> the last couple of months. To mitigate this, we'd like to convert
> it onto a DC battery bank system. This requires 2 new item purchases:
> 1) A 24V battery bank to run the site for a few days in case of
> power outage
> 2) A DC PDU (Power Distribution Unit / PoE injector) to control
> and monitor power usage
> The battery bank is $500 for 240Ah @ 24V. The PDU is $231.03.
> The total for this spending request is therefore $731.03.
> Only directors may vote to approve the spend, but anyone is
> welcome to comment with input during the next 24 hours.
> PSDR mailing list
> PSDR at hamwan.org <mailto:PSDR at hamwan.org>
> Netops mailing list
> Netops at hamwan.org
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