[RE-wrenches] Large, off grid

[Exeltech]

Darryl,

Exeltech makes 60 kW three-phase off-grid inverters.
Contact me off-list.


Dan
Sr. Engineer
Exeltech


--- On Fri, 8/12/11, penobscotsolar at midmaine.com <penobscotsolar at midmaine.com> wrote:

> From: penobscotsolar at midmaine.com <penobscotsolar at midmaine.com>
> Subject: [RE-wrenches] Large, off grid
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Date: Friday, August 12, 2011, 10:42 AM
> 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-31
> series 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