We were called in on a system similar to this, and we ended up just
installing an AC transfer switch. Normally the GT array sold back to
the grid side of the system, but in an extended outage, the customer had
the option to switch the connection to the back up load side (AC coupled)
He was
Allan, you could network multiple Morningstar 600v controllers for the
output ampacity required (up to 4 controllers, ...yeah, I know they are
expensive).
Would you even need a transfer switch? Why not just wire Fronius IG and
Morningstar controller inputs in parallel (with associated fuses and
HI Allan,
I’ll let you do the AC or DC couple choice.
However my suggestion if you do DC couple is to go Schneider for all. Then you
will have an integrated DC couple package. Metering and control, they have new
battery meter and full online capability.
And one of the things I don’t like
Wrenches,
I am serving as a consultant for a homeowner with an array of solar
equipment that doesn't do what he wants, a common story. He wants
independence in the event of an extended utility outage. To cut to
the chase:
He has one array of 3,100 watts feeding
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