[RE-wrenches] 3 Phase Grid Tie with Battery Backup

[Darryl Thayer]

I do not know what is going on at Outback, but unless they reduced the product offering, they have the capability.  I have such a system.  

Use 3 of their 120 volt single phase inverters connected 3-phase WYE (120/208) 3 phase.  Each inverter is only a single phase, and you connect each inverter to the neutral and one phase, you program one to be the Master, and the others to be slaves on phase B and Phase C.  When you lose the grid, the Master inverter starts its sine wave and it generates the usual 60 Hz square wave on the Outback Bus and the following slave units delays the start of their sin waves by the appropriate 120 degrees to generate 3 phases.  Each inverter picks up and makes 60 hz 3 phase.  

One thing, besure to get a rotation meter and check that you are generating 3-phase the same rotation as the grid. Else you will have big problems.  (motors will reverse and you may fry the OB transfer relay) 

Next time you call outback ask a tech if you can slave the GVFX to make 3 phase,    

--- On Mon, 2/15/10, All Solar Inc. Jeremy Rodriguez <allsolar at scswifi.net> wrote:

> From: All Solar Inc. Jeremy Rodriguez <allsolar at scswifi.net>
> Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery Backup
> To: starpower4u at juno.com, "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Date: Monday, February 15, 2010, 4:14 PM
> Jeff,
> That was my first choice, but  I was told by Outback
> that they do not offer 
> a 120/208 inverter(s).  I have not set up a three
> phase system yet, so bare 
> with me please.  I was going to contact SMA next.
> 
> Jeremy
> 
> 
> ----- Original Message ----- 
> From: "Jeff Oldham" <starpower4u at juno.com>
> To: <Allan at positiveenergysolar.com>;
> <re-wrenches at lists.re-wrenches.org>
> Sent: Monday, February 15, 2010 3:03 PM
> Subject: Re: [RE-wrenches] 3 Phase Grid Tie with Battery
> Backup
> 
> 
> > You can also do it w/Outback up to 10.8kW
> >
> >>From the Solar, Wind and Hydro powered office of
> Jeff Oldham/Regenerative 
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