[RE-wrenches] 2 SW inverters on three phase

[William Miller]

Phil:

Did the system you describe have the SWI stacking cable in place?

Thanks,

William




At 07:27 AM 7/28/2011, you wrote:
>At my previous employment we had a pair of SW's in exactly this 
>configuration across a 120/208 three phase supply.  Stacking on the SW's 
>wasn't so much about coordinating operation between the two as much as it 
>was the master of the moment giving a zero crossing and telling the other 
>to stay out of the way.  When grid wasn't present, the inverters would 
>operate 180 degrees out of phase, 120/240 output.  When grid was turned 
>on, the slave would drift 60 degrees to sync up with the incoming power, 
>and the two would operate as two legs of a 120/208 supply.  Kinda fun to 
>watch on a scope.
>
>If all your connected loads are 120V, you should be fine.
>
>Phil
>-----------
>"When we learn how to store electricity, we will cease being apes 
>ourselves; until then we are tailless orangutans. You see, we should 
>utilize natural forces and thus get all of our power. Sunshine is a form 
>of energy, and the winds and the tides are manifestations of energy.  Do 
>we use them? Oh, no! We burn up wood and coal, as renters burn up the 
>front fence for fuel. We live like squatters, not as if we owned the 
>property.
>
>There must surely come a time when heat and power will be stored in 
>unlimited quantities in every community, all gathered by natural forces."
>-- Thomas Edison --
>
>
>
>On Thu, Jul 28, 2011 at 12:23 AM, William Miller 
><<mailto:william at millersolar.com>william at millersolar.com> wrote:
>Friends:
>
>Is there any way to connect two SW series inverters to two phases of a 
>three phase generator?  It seems to me that one could connect three SW 
>inverters with the right stacking cable (or am I confusing Outback 
>inverters with the hub jumper set properly).
>
>Any input is appreciated.
>
>Thanks,
>
>William
>
>William Miller
>Miller Solar
>Voice :<tel:805-438-5600>805-438-5600
>email: <mailto:william at millersolar.com>william at millersolar.com
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William Miller
Miller Solar
Voice :805-438-5600
email: william at millersolar.com
http://millersolar.com
License No. C-10-773985
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