Hi Jason,
I really don't think the generator is at fault. I think of these grid tied
inverters as current sources, not voltage sources. If they don't "like"
the voltage at their AC input terminals, its their job to disconnect from
that voltage source and reconnect when the voltage is within
I believe that when you have a TL inverter that has two channels you may have
up to two strings, unfused, going into each channel. Thus leaving you with
four strings of modules with no fusing.
Mike Kocsmiersky
Principal
Phone: 413 883-3144
Spirit Solar
www.SpiritSolar.net
Mac,
That's what I was thinking, too. The inverters should be resilient to AC
input variations.
I learned something else... the inverters had lightning arrestors installed
and connected to DC inputs that still had dummy fuses in them. Later when
they were discovered by someone else totally fried
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
That document refers to 2008 NEC 690.9 code which has the exemption that is
used for grounded inverters. Section 690.35 for ungrounded systems just
refers back to 690.9 for over-current protection. So I do not see any
indication that two strings on an ungrounded inverter could not have the
same
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