20 Jun
2016
20 Jun
'16
2:21 p.m.
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? -- Len Sorensen