[RE-wrenches] AC coupling and Outback inverters

[Kirk Herander]

I have AC-coupled an Outback quad-stack with multiple SunnyBoy 6000US
inverters and it's been running fine for 4 years. I used the off-grid
version of Outbacks.

Now I have an application where a customer wants to add battery backup to an
existing SunnyBoy 5000US system. And expand his array by a couple KW. So I'm
thinking of using a GT Outback w/ batteries to handle the critical loads and
feed the extra 2kw of PV (charging the batteries through an MX60) to the
grid. And I'd like to AC-couple the SunnyBoy so the original 5 kw array can
also charge the batteries, BUT I remember, at least I think so, that the GT
inverter cannot be AC-coupled, only the off-grid version. Is this correct?
Thanks.

 

Kirk Herander

VT Solar, LLC

dba Vermont Solar Engineering

NABCEPTM Certified installer Charter Member

NYSERDA-eligible Installer

VT RE Incentive Program Partner

802.863.1202

 

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