[time-nuts] line frequency website

shalimr9 at gmail.com shalimr9 at gmail.com
Fri Dec 30 21:21:38 EST 2011


Then the best is probably to do your own survey. I am not sure that what is being observed in an "undisclosed location" would have much weight with your management.

You can rent a Dranetz for a couple of months and install it a week at a time in carefully selected locations and get data that you can use.

Didier KO4BB
 
Sent from my BlackBerry Wireless thingy while I do other things...

-----Original Message-----
From: David VanHorn <D.VanHorn at elec-solutions.com>
Sender: time-nuts-bounces at febo.com
Date: Fri, 30 Dec 2011 16:07:33 
To: Discussion of precise time and frequency measurement<time-nuts at febo.com>
Reply-To: Discussion of precise time and frequency measurement
	<time-nuts at febo.com>
Subject: Re: [time-nuts] line frequency website


________________________________________
From: time-nuts-bounces at febo.com [time-nuts-bounces at febo.com] On Behalf Of shalimr9 at gmail.com [shalimr9 at gmail.com]
Sent: Friday, December 30, 2011 3:47 PM
To: Time-Nuts
Subject: Re: [time-nuts] line frequency website

The problem is that while the frequency is going to be pretty much the same anywhere on the same grid, the voltage is not. Knowing the voltage at some point in your state (or another) is not all that useful. They may record it, but I am not even sure it would be worth saving in a database.


Well, I design systems that we send out all over the world.
I have various spec numbers that indicate some rather optimistic tolerance.
For example, I have measured actual outlets in the US at 70VAC and 142VAC, which is well outside the published tolerances.
I get a lot of flack from management when I try to use those numbers as operational limits instead of the utility published ones.
Some empirical evidence from a third party would help a lot.

We want to design systems that "Just work".


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