Hi Mac--
We've installed four Magnum 4048-Fronius AC coupled systems, ranging from the
older Fronius IG through the later Fronius IG Plus with arc fault. One system
had three Magnums, another two Magnums and two were single Magnums. We had a
small glitch on the two Magnum system on one occasion that we haven't yet
figured out and we don't yet have enough info to make a pronouncement. The grid
dropped out on a cold, partly cloudy, sunny day with winds quickly moving the
clouds past the modules. The Fronius IG Plus would not switch to the second
stage after the clouds passed and the sun came out. We weren't there at the
time and conditions are hard to replicate. Magnum tells us it's a Fronius issue
and we are hoping to work with someone at Fronius to learn more.
Bill Hennessy
Berks Solar, LLC
________________________________
From: Mac Lewis <[email protected]>
To: RE-wrenches <[email protected]>
Sent: Wednesday, April 16, 2014 4:44 PM
Subject: [RE-wrenches] AC coupling with Fronius
Hello wrenches,
Has anyone had good success AC coupling with Fronius Inverters? If so, what
equipment did you use? Was this with an IG or an IG Plus?
I have had quite a few people lately with Fronius Inverters that would like a
backup solution and I'm not comfortable AC coupling these, but could
potentially be persuaded.
Thanks
--
Mac Lewis
"Yo solo sé que no sé nada." -Sócrates
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