But you can use one e-Guage to look at 6 different current flows. The e-guage has 12 CT inputs, and shows all the data online.
On Sat, Aug 25, 2012 at 9:17 AM, Drake <drake.chamber...@redwoodalliance.org > wrote: > You can also use a couple of rebuilt meters from Hialeah Meter company > that read both ways. On the AC IN, the power that is sold to and purchased > from the grid will add / subtract to let you know the amount you sold or > bought. The meter to the protected loads panel will register one way to > let you know how much power was consumed there. If you sold more power > than you purchased, you can add that to the protected loads panel > production. If you purchased more, subtract that to find your PV > production. > > > > At 02:23 PM 8/24/2012, you wrote: > > Great explanation gary. I was thinking that between the AC1 and breaker > in the main panel was the right place but wasn't sure. Thanks for the help. > > Aaron Mandelkorn > NABCEP Certified PV Installer > Owner / Operator > > Renewable Energy Outfitters > Box 65 Salida, CO. 81201 > (970)596-3744 > reoso...@gmail.com > www.reosolar.com > > > > > > > > > > > > > > > On Aug 24, 2012, at 11:05 AM, Gary Willett wrote: > > Aaron: > > Manually-read legacy utility meters, in many cases, are set up to > accumulate current flow in either direction as kWh consumed. This was done > because dishonest people would turn the meter upside down for part of the > month, and then put it back normal before the meter-reader showed up. > > My electric service has a bi-directional "smart" utility meter that > presents a cyclic display of kWh delivered (code 20) and received (code 57). > > For my GTBB system, I use a GE KV2c bi-directional meter between the XW > AC1 conductors and the grid interactive back-fed PV breaker. This provides > a separate register for the kWh "bought" and the kWh "sold" from the XW's > perspective. > > The XW inverter AC output feeds a protected loads panel, which in my case > contains everything except the electric oven and the electric dryer. My > 3-ton AC unit runs off the XW inverter under grid-up, but is switched off > via a contactor when in grid-down. I have an autostart 6kW Generac EcoGen > connected to the XW AC2 for back-up in event of an extended grid outage. > > The KV2c "bought" register accumulates the kWh consumed when the XW is in > AC Pass-Thru mode or grid supplement mode (PV kW not adequate to deliver > load demand). The KV2c "sold" register accumulates the kWh delivered by the > XW to the main service panel. Some of these kWs power my 240V loads if they > are active. > > Regards, Gary Willett, PE > > > On 8/24/2012 10:44 AM, Kent Osterberg wrote: > > Aaron, > > Is the objective to measure all of the energy produced or only that which > is delivered to the grid? To measure the energy sold to the grid, the meter > goes between the XW and the grid, but it must be an electronically detented > meter that only records energy flow in one direction. > > Kent Osterberg > Blue Mountain Solar, Inc.www.bluemountainsolar.com > t: 541-568-4882 > > On 8/24/2012 7:29 AM, Aaron Mandelkorn wrote: > > Wrenches, > > I would like to here some thoughts on monitoring the production a XW in > grid tie with battery backup mode. I normally use the Sunny Island for my > grid tie with battery backup systems and am considering going with the XW > on my next one. Just wondering where in the system one would wire the AC > PV Production meter to best represent the amount of power sold to the > grid. We have performance based incentives around here that require > metering of the power going back to the grid. With the SI systems this is > easily accomplished by putting the required meter after the sunny boy > before going to the critical loads panel. Any ideas about how to > accomplish this with the DC coupled XW system? Your thoughts would be > greatly appreciated. > > Aaron Mandelkorn > NABCEP Certified PV Installer > Owner / Operator > > Renewable Energy Outfitters > Box 65 Salida, CO. 81201 > (970)596-3744 > reoso...@gmail.com > www.reosolar.com > > > > > > > > > > > > > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: > RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: > RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Chris Mason President, Comet Systems Ltd www.cometenergysystems.com Cell: 264.235.5670 Skype: netconcepts
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