Here is a repost of this information from 20067 Todd
Ok, I called Jake and he forwardedme to Brent Carper (253-395-6818) who works in the Puget Sound Energymetering department. I had a long conversation with him about how tometer battery based, grid tied inverters. The form 12s meter (recommended by Outback) is designed for 120/208 3phase so it is expecting to see 120º of phase difference between thetwo legs rather than 180º,and being analog meters use the same core for both meter coils, thephysics of this would suggest even an analog meter will not accuratelyread 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 threevarieties: 1- The most common default configuration is cumulative read. This will NOTwork. 2- The other two configurations are net register or 3- dual register Both of these (2 & 3 above) will work, although net register willdo the calculations for you and dual register (sometimes called dualfunction) will leave you with separate buy and sell totals that willneed 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 severalmeters 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] http://www.outbackpower.com/pdfs_general/Form%2012S%20Green-Tag%20meter.pdf Todd Ian Woofenden, Home Power wrote: Hi Randy and Todd, Andy has actually changed jobs, and the new contact at PSE is: Jake Wade [mailto:[email protected]] <[email protected]> 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 [mailto:[email protected]] [email protected] Randy Brooks Brooks Solar, Inc. Solar Power for People 140 Columbia View Chelan, WA 98816 509-682-9646 [mailto:[email protected]] [email protected] [http://www.brookssolar.com/] www.BrooksSolar.com On Jun 30, 2007, at 8:58 AM, Todd Cory, Mt. Shasta Energy Serviceswrote: 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 wantto 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 [mailto:[email protected]] [email protected] On Thursday, January 28, 2010 12:57pm, [email protected] said: I am using an analog GE kwh meter on an outback system with battery backup to a protected loads panel. The AC in to the inverter is attached to the bottom of one leg of the meter and the AC out of the inverter is connected to the top of the other leg. This should give me an accurate record of just the production from the system. The idea is that the AC IN that will power the protected loads panel at night will come in the bottom of one leg and turn the meter backwards then exit through the top of the meter going forward thus cancelling those kwh. out. I have a neutral hooked to the meter because I am using it to record 120V but I am not getting accurate readings with this configuration. Any suggestions on metering in this case? I need a utility grade kwh meter. Gary Easton NABCEP Certified Solar PV NABCEP Certified Solar Thermal APPALACHIAN RENEWABLE POWER LTD. Stewart, Ohio 740-277-8498 “I'd put my money on solar energy… I hope we don't have to wait 'til oil and coal run out before we tackle that.” —Thomas Edison, in conversation with Henry Ford and Harvey Firestone, March 1931
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