[RE-wrenches] Ac Coupling

[Scot Arey]

Yes I had also heard from Outback  that AC Coupling not supported.




Too bad because the AC coupling load center was slick setup and integration.




Scot




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On Wed, Jul 25, 2018 at 10:29 AM -0600, "Kelly Keilwitz, Whidbey Sun & Wind" <kelly at whidbeysunwind.com> wrote:










Larry,I recommend considering retrofitting the SolarEdge “StorEdge” Li-ion battery. It’s a high-voltage battery on the PV side of the inverter. We have a few out there now for a few months without a problem. Really like the design concept of the storage on the PV side, increasing system efficiency.
We’ve done quite a few AC-coupled systems, which Outback FX, Outback Radian, and SMA Sunny Island/Sunny Boy. The Outbacks require a cutout relay. We won’t do Radian AC-coupling any more, as the setup, documentation, and support is a royal PITA, and have had failures in the “ROCB” automatic cutout breaker. Even when the ROCB doesn’t fail, it often cuts out when it isn’t supposed to, like at the start/end of a float cycle. My understanding is that Outback doesn’t support AC-coupling any more with the Radian.


Kelly Keilwitz, P.E. 
Principal
Whidbey Sun & Wind
Renewable Energy Systems
NABCEP PV Installation Professional
WA Electrical Administrator
office: 360.678.7131





On Jul 19, 2018, at 07:07, Larry Brown <sunmountain at netstep.net> wrote:
Does anyone have a recommendation on a battery based inverter to AC Couple with a Solar Edge 11400A-US Inverter that is already installed?
I have been working a lot with the Schneider Conergy XW+ Inverters for off grid but have no experience AC Coupling them with a Solar Edge Inverter
Any recommendations?

Thanks
Larry

Larry Brown
Sun Mountain
845-657-8096
Sunmountain at netstep.net


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