4024SW [RE-wrenches]

[Tom Elliot]

I'm not surprised at the unclean results from the power companies meters.  I
just ran my 4024 through an o'scope test and it came back with varying THD
from 3% to almost 7% depending on the load.  What makes it noisy, as my
friend wielding the meter informed me, is the harmonics on the Trace.  There
are a lot of high frequency variations that you wouldn't ordinarily see on
the grid and it is probably those that cause the noise problems.  He checked
his grid and found worse THD on the grid and much less stable voltage but
also far less "noise" than on the Trace.

Tom Elliot

----- Original Message -----
From: "Daryl DeJoy" <penobscotsolar at panax.com>
To: <RE-wrenches at topica.com>
Sent: Wednesday, May 30, 2001 4:58 PM
Subject: 4024SW [RE-wrenches]


> Hi all,
> I''ve heard an unsubstantiated rumor that the U.L. listing on the 4024SW
> inverter might be pulled because of its relatively unclean power. Has
> anyone else heard anything about this?
> Both grid tie systems we have done so far (with 4024SW inverters) required
> the local power companies engineer to come out and put a scope on the
> output. When he compared it to the grid it was much less clean. It
> obviously met parameters in both cases, though, because they passed the
> installation and installed the meter.
> Anyway, thoughts?
> Daryl
> Penobscot Solar Design
>
> - - - -
> To send a message: RE-wrenches at topica.com
>
> Archive of previous messages: http://www.topica.com/lists/RE-wrenches/
>
> List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm
>
> Check out participant bios: www.mrsharkey.com/wrenches/index.html
>
> Hosted by Home Power magazine
>
> Moderator: michael.welch at homepower.com
>
>
>

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

==^================================================================
EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9
Or send an email To: RE-wrenches-unsubscribe at topica.com
This email was sent to: michael.welch at homepower.com

T O P I C A -- Register now to manage your mail!
http://www.topica.com/partner/tag02/register
==^================================================================