Hi Kirk, I would consider the Sunny Island option. Everything integrates nicely. You can use the smartformer to get 240Vac if you need it at the critical loads. This would give the Sunny Island Frequency control over the Sunny Boy (assuming you can run Cat 5 to the Sunny Boy).
Good Luck. On Thu, Oct 4, 2012 at 3:10 PM, Kirk Herander <[email protected]> wrote: > I have AC-coupled an Outback quad-stack with multiple SunnyBoy 6000US > inverters and it’s been running fine for 4 years. I used the off-grid > version of Outbacks.**** > > Now I have an application where a customer wants to add battery backup to > an existing SunnyBoy 5000US system. And expand his array by a couple KW. So > I’m thinking of using a GT Outback w/ batteries to handle the critical > loads and feed the extra 2kw of PV (charging the batteries through an MX60) > to the grid. And I’d like to AC-couple the SunnyBoy so the original 5 kw > array can also charge the batteries, BUT I remember, at least I think so, > that the GT inverter cannot be AC-coupled, only the off-grid version. Is > this correct? Thanks.**** > > ** ** > > Kirk Herander**** > > VT Solar, LLC**** > > dba Vermont Solar Engineering**** > > NABCEPTM Certified installer Charter Member**** > > NYSERDA-eligible Installer**** > > VT RE Incentive Program Partner**** > > 802.863.1202**** > > ** ** > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > 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 > > > -- Mac Lewis * "Yo solo sé que no sé nada." -Sócrates *
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