[RE-wrenches] Anyone try the new SMA battery inverter with Automatic Backup Unit? Couple of questions.

[Howard Arey]

Excited to use this and even more excited that one of our sales reps with a
SMA system has offered to be our guinea pig!

The ABU looks great - just got one to the shop today - it has transfer
switch with full 200A capability, auto-transformer, easy inputs for
BB-inverter, PV inverter, and smart meter with CTs built for smart energy
management.

 

Couple of questions for those that might know, but does the AC coupling of
the PV inverter plus the 6.0 BB-inverter mean I might possibly push their
combined full output to downstream loads. Even though 200-amp capable ABU,
hard to see how I do whole-house backup. We think we get to "inside the
walls backup only" which is good except during middle of summer. A bit more
than StorEdge power output.

Does anyone know the protocol for decreasing the output of the PV inverter
when batteries are full? I think it is freq shifting but the diagram does
show communication via the home router between the PV inverter and the
BB-inverter. I'd think if this was a necessary communication, then SMA would
have insisted on a hard-wire connection. Any ideas on what might be shared
and for what purpose.

 

This also leads to last question and if freq shifting is the mechanism for
throttling back PV inverter output, then I'm thinking that using any brand
inverter would work.

 

Look forward to answers and to sharing more as I put this at the home of our
Guinea pig...I means sales rep!

 

Howard "Scot" Arey

Owner, Solar CenTex

NABCEP Certified PV Installation Professional

254-300-1228

scot.arey at solarcentex.com

 

www.solarcentex.com <http://www.solarcentex.com/> 

https://www.facebook.com/SolarCentex



Top-Rated Solar Installer in Texas by Solar Reviews
<http://www.solarreviews.com/installers/solar-centex-reviews/> 



 

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