On Mon, Jun 20, 2016, 10:54 Daniel Villarreal via talk <[email protected]> wrote:
> -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > On 06/20/2016 10:21 AM, Lennart Sorensen via talk wrote: > > On Sat, Jun 18, 2016 at 07:58:10PM -0400, Michael Galea wrote: > >> You know of course that the grid frequency is only approximately > >> 60.00 hz. For example, it was 59.97 hz on Friday at around 5 PM. > >> I have heard rumors that the generators spin the grid up to above > >> 60 hz in the early morning hours to compensate for the drift, but > >> I don't know if thats a fact. I often see the grid at 60.01 hz, > >> in the middle of the day though. > > > > Hmm, my APC SmartUPS just reports 60.0 or 60.2Hz all the time, so > > I don't think I believe it to be accurate. :) > > > > What gismo are you using to measure that? > > Wow, by pressing the right-hand button on my APC Back-UPS XS1000, I > can see lots of status information, nice! > > I also have a Back-UPS XS900, and many years ago it shut down and > beeped constantly, if memory servers, and so I replaced the fan, and > put it back to work. Now the dual-batteries need to be replaced. > I have them out in the garage, but I had taken the specs to my local > W*ntronics store and they flatly stated that they would not order what > I was specifying, and I refused to buy APC-branded batteries, thinking > that I could save lots of money... I should probably pursue this and > post the info at my web site. > > I recently took lots of pictures of the new memorial to Nikola Tesla > down by the Falls, I need to see about putting those online, as well. > If you haven't done so, I highly recommend reading "The Man Who > Invented The Twentieth Century : Nikola Tesla, Forgotten Genius Of > Electricity," by Robert Lomas. > > - -- > Daniel Villarreal > Sayal might have the batteries you're looking for. >
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