The long-term accuracy of the grid frequency is very high. You'll remember the old ac clocks that used a synchronous motor would almost always keep perfect time. Over the short term you'll see some variation, but nothing like the one percent error your meter is showing.
Back in 2011, the power companies experimented with letting the frequency drift a bit and not correcting it over the long term. I googled and found a few old articles about the experiment, but nothing about the RESULTS. So I don't know if they decided go back to the old rigorous regulation or to allow frequency variation to continue.
I think the real problem with your meter is noise. It's not easy to make a cheap, accurate, broad-band frequency meter. (If you try comparing different cheap guitar tuners, you'll quickly find they are not at all the same.) A little noise is going to introduce some extra zero crossings that will really trash the measurement. You might try adding a low-pass RC filter to your meter and see if that improves the measurement. Also, is there a spec for your meter's accuracy? If the manufacturer doesn't publish the accuracy, it's fair to assume that one percent is about all you'll get.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
