[RE-wrenches] Connecting Two Grid-Battery Backup Inverters to 120/208

[Chris Mason]

Use a 208 - 240/120 transformer.
Use 3 x sunny islands


On Wed, Nov 28, 2012 at 2:06 PM, Christopher Warfel <
cwarfel at entech-engineering.com> wrote:

> We were asked to replace two failed Trace SW4048 inverters with two
> Outback GT3048 inverters. Upon start up the slave inverter would not
> connect.  We did not realize that the building service is 208, 3 phase. The
> bypass is 120/240 which the SW4048s could connect to without a problem.
> Outback says their inverters will not connect to this system because of the
> phase angle of 120 and their software.
>
> The phases are always going to be at this rotation, so I don't see a
> transformer helping solve the problem, but this is something I am really
> unfamiliar with.
>
> So the input at the inverter panel is two 120 volt phase at 120 degrees.
> The output to the EP is 120/240.
>
> I am asking if anyone has an idea of how to fix this problem? The goal is
> to have a grid interconnected system with battery backup.
>
> Chris
>
>
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-- 
Chris Mason
President, Comet Systems Ltd
www.cometenergysystems.com
Cell: 264.235.5670
Skype: netconcepts
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