[RE-wrenches] Single phase to three phase interconnect

[David Brearley]

Eric,

Marvin Hamon, a PE in CA, wrote an article for SolarPro magazine on this
topic that may be of assistance:

http://solarprofessional.com/article/?file=SP3_1_pg66_Hamon&search=

David Brearley, Senior Technical Editor
SolarPro magazine 
NABCEP Certified PV Installer 
david.brearley at solarprofessional.com
Direct: 541.261.6545




On 4/25/11 1:01 PM, "Eric Thomas" <solarepiphany at gmail.com> wrote:

> While commercial solar work is newer to me, im surprised this hasn't been
> addressed very much in our forum: Interconnecting single phase inverters to
> three phase services. We are laying out a 6kW system using Silicon Energy
> Cascade modules and Aurora PVI inverters (either 2 or 3 PVI 3.0's). The
> challenge is finding a way to easily tie two of these inverters into the
> existing 3phase service. I've been reading up on Sunny Boys tech notes and on
> this forum about imbalance and such, but im still not comfortable enough with
> tie in. Due to the string configuration options, I can add a third inverter
> and use a three phase subpanel to aggregate the inverters then tie them in.
> But adding a third inverter seems like a goofy solution. In looking at
> available equipment, transformers, phase converters etc, I can't seem to find
> the right fit. Any ideas?
> 
> This system does not have a three phase inverter option due to Made in WA
> req's. 
> 
> Thanks!
> 
> Eric Thomas
> Solar Epiphany LLC
> 
> 
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