form 12-s green tag meter [RE-wrenches]

[Todd Cory, Mt. Shasta Energy Services]

Ok, I called Jake and he forwarded me to Brent Carper (253-395-6818) who 
works in the Puget Sound Energy metering department. I had a long 
conversation with him about how to meter battery based, grid tied 
inverters.

The form 12s meter (recommended by Outback) is designed for 120/208 3 
phase so it is expecting to see 120º of phase difference between 
the two legs rather than 180º, and being analog meters use the same 
core for both meter coils, the physics of this would suggest even an 
analog meter will not accurately read net power produced (but it will 
probably be only 1 or 2% off).

The best way to accomplish this is with a digital, form 12s meter. Now, 
not any old form 12s meter will work (sigh). These meters come in three 
varieties:

1- The most common default configuration is cumulative read. This will 
NOT work.
2- The other two configurations are net register or
3- dual register


Both of these (2 & 3 above) will work, although net register will do the 
calculations for you and dual register (sometimes called dual function) 
will leave you with separate buy and sell totals that will need to be 
manually added together at the end of each billing cycle.

As far as I now know this is accurate information, but I have several 
meters coming that I am going to test out to confirm the above details. 
Hopefully Outback will annotate this on their "green tag meter" pdf.

http://www.outbackpower.com/pdfs_general/Form%2012S%20Green-Tag%20meter.pdf


Todd


Ian Woofenden wrote:
> 
> 
> Hi Randy and Todd,
> 
> Andy has actually changed jobs, and the new contact at PSE is:
> 
> >Jake Wade  <jake.wade at pse.com>
> >Green Power Program Implementer
> >425-462-3459
> 
> Best,
> 
> Ian
> 
> >Todd,
> >
> >The latest contact I have for Puget Sound Energy, RE program, is:
> >
> >Andy Hemstreet
> >Program Implementer,
> >Renewables and Green Power
> >Puget Sound Energy
> >Office - 425 456-2633
> >andrew.hemstreet at pse.com
> >
> >Randy Brooks
> >Brooks Solar, Inc.
> >Solar Power for People
> >140 Columbia View
> >Chelan, WA  98816
> >509-682-9646
> >info at BrooksSolar.com
> >www.BrooksSolar.com
> >
> >On Jun 30, 2007, at 8:58 AM, Todd Cory, Mt. Shasta Energy Services 
> >wrote:
> >
> >>
> >>Kelly and others interested in this,
> >>
> >>Yes form 12s meters and sockets have 5 terminals.
> >>
> >>I am going to do some more testing on this next week, but it appears
> >>only analog meters will work with the Outback directions. If you want to
> >>use a digital meter, it needs to be configured to "net register". This
> >>should be clarified on the Outback green tag metering diagram.
> >>
> >>Who is your contact at PSE? I'd like to ask them what kind of "tweaking"
> >>they do to get the digital meters to work correctly.
> >>
> >>Todd
> >>
> >>
> >>Randy Brooks wrote:
> >>>
> >>>
> >>>Todd,
> >>>
> >>>One thing the OutBack diagram does not mention is that the meter base
> >>>requires an additional neutral socket for the 5th meter leg.  If you
> >>>meter base does not have one, that may be the problem.  You can get a
> >>>5th socket adapter for your meter base from the meter supplier too.
> >>>
> >>>take care,
> >>>
> >>>Randy Brooks
> >>>Brooks Solar, Inc.
> >>>Solar Power for People
> >>>140 Columbia View
> >>>Chelan, WA  98816
> >>>509-682-9646
> >>>info at BrooksSolar.com
> >>>www.BrooksSolar.com
> >>>
> >>
> >
> >
> >--
> >[Non-text portions of this message have been removed]
> >
> >
> >- - - -
> >Hosted by Home Power magazine
> >
> >To send a message: RE-wrenches at topica.com
> >
> >Archive of previous messages: 
> >http://lists.topica.com/lists/RE-wrenches/read
> >
> >List rules & how to change your email address: 
> >www.mrsharkey.com/wrenches/etiquette.php
> >
> >Check out participant bios: www.mrsharkey.com/wrenches/
> >
> >Moderator: michael.welch at homepower.com
> 
> 
> -- 
> 
> Ian Woofenden <ian.woofenden at homepower.com>, Senior Editor
> Home Power magazine; Subscriptions: $22.50 per year, PO Box 520, 
> Ashland, OR 97520 USA
> 800-707-6585 (US), 541-512-0220, or download free sample issue at 
> <http://www.homepower.com>


- - - -
Hosted by Home Power magazine

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

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

List rules & how to change your email address: www.mrsharkey.com/wrenches/etiquette.php

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

Moderator: michael.welch at homepower.com
--^----------------------------------------------------------------
This email was sent to: michael_welch at sbcglobal.net

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

For Topica's complete suite of email marketing solutions visit:
http://www.topica.com/?p=TEXFOOTER
--^----------------------------------------------------------------