[RE-wrenches] Large, off grid

[Darryl Thayer]

Another method is to use the 120 volt VFX 3648, with one master and 14 slaves. (15 total, 5 in paralled on each leg)  Check this with Outback as the 3 phase is different now than it was back in 2003.  The three phase was the master generated a square wave and each slave would use this to lag either 120 or 240 degrees.  For standalone not grid tie.  I did a multi inverter on standalone 3 phase.  
 
Also a good source for this might be  Julie Haugh <jfh at greenhousepc.com>; She has done a lot of work with Outbacks 
Darryl

From: jay peltz <jay at asis.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Sent: Friday, August 12, 2011 1:02 PM
Subject: Re: [RE-wrenches] Large, off grid

Hi Daryl,

You might look at the new Outback 8kw 120/240v

I know that you can connect up to 10 in parallel,  i don't know if you can do it 3 phase however.

jay 

peltz power






On Aug 12, 2011, at 8:42 AM, penobscotsolar at midmaine.com wrote:

> Hello wrenches,
>   We have an opportunity to install a very large (60 kw) off grid system
> in Mexico. It is currently three phase. I do have the option of
> changing out the air conditioners (36 of them) to 120 single phase, but
> it is an added layer of complexity/cost that it would be nice to avoid.
>   The largest off grid system I've done is 21 kw so far, and it was
> single phase and fairly straightforward.
>   Does anyone know of a three phase, off grid inverter than can be
> paralleled for 500 (possibly 450) amps oputput. I am currently dealing
> with three 120 volt lines (2/0) and a neutral, running to a transformer
> to "clean up" the power from the gennie a bit. The client is determined
> to do this as he has spent about $500,000.00 USD in diesel over the
> last 5 years.I would very much like to get that transformer out of the
> picture...
>   I am well versed in the complexities/pitfalls of battery systems this
> large. I'm planning on using the Surrette YS-31series to minimize the
> footprint, as well as use Water Miser caps and install three separate
> deionizing water systems. My issue is the inverters. I have seen a
> Korean inverter, Sunsine (http://www.dongeiecos.com/) that is capable
> of this, but I am not sure I want my first install of this inverter to
> be 3000 miles away....
>   Anyone?
> 
> Thanks,
> Daryl DeJoy
> NABCEP Certified PV installer
> Penobscot Solar Design
> 
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