Here is a paper on AC coupling the magnum.
http://www.wholesalesolar.com/pdf.folder/inverter%20pdf%20folder/MagnumACcoupling.pdf
The key is to connect the AC input terminals on the Magnum to the main
panel (or a panel closer to the utility feed) and then feed the utility
interactive inverter to a
Here is a paper on AC coupling the magnum.
http://www.wholesalesolar.com/pdf.folder/inverter%20pdf%20folder/MagnumACcoupling.pdf
The key is to connect the AC input terminals on the Magnum to the main
panel (or a panel closer to the utility feed) and then feed the utility
interactive inverter to a
Hi Kelly;
I agree the Radian system is appealing. Its basically uses a circuit
breaker that can be controlled like a relay as well, and just
disconnects the GT inverter.
I'm going to offer a brief table of what I've found for my choices:
Brand
Control Method
Pros
Ray
You did not mention the XW, it frequency dithers so it is a pretty
straight forward setup. It also comes in 4, 4.5 and 6KW
Ryan
On 7/31/2013 2:04 PM, Ray Walters
wrote:
Hi Kelly;
I agree the Radian system
Mac,
We have installed about ten AC coupled Magnum systems over the past year.
Overcharge protection is accomplished by frequency shift, but Magnum
recommends an auxiliary form of battery management. The cheapest way to do
this is to program the relay driver on the Magnum advanced remote control
Right, Corey.
All critical loads and their wiring aside, the GT only inverter cannot
put out more
current than the pass through relay in the BB inverter is rated for.
For example, you would not want to use a 100 kW PV-GT only inverter
on the AC output of a 4 kW BB inverter.
When grid is up,
Corey;
Would you mind sharing what relay didn't work, and which ones did, along
with inverter output current? Since the relays will be running for
hours at inverter rated output, my thinking would be to oversize the
relay by at least a factor of three. I might try Outback's relay/
breaker
: Wednesday, July 31, 2013 12:55 PM
To: RE-wrenches
Reply To: RE-wrenches
Subject: Re: [RE-wrenches] Outback AC coupling Sunpower?
Corey;
Would you mind sharing what relay didn't work, and which ones did, along with
inverter output current? Since the relays will be running for hours at
inverter
Hi Corey,
Did you mount the SS relays to a good heat sink with heat compound?
They are quite sensitive to heat damage and also like a lot things
optimistically rated.
I use a 2X oversize ratio for SS relays if they are used very much at all or
for longer periods of time.
And I think you are
Hi All;
I know AC coupled systems have been covered before, but I have a new
issue: positive grounding. A customer with an existing 8kw Sunpower
system wants to add backup. He was put off by the high cost the Sunny
Island, so I was steering him towards a single Outback VFX coupled to
The Outback rep got me some good info, and I'm liking the Radian with
the Remote controlled breaker to control the GT inverter when the grid
is out. I've heard of quite a few problems related to the Sunny Island
frequency controlled system.
My question is can off grid inverters like the Magnum
Hi ray
Magnum does have a way to do it
Theirs is a bit different, but all the data is on their web site
Jay
Peltz power
Sent from my iPhone
On Jul 30, 2013, at 4:23 PM, Ray Walters r...@solarray.com wrote:
The Outback rep got me some good info, and I'm liking the Radian with the
Remote
Hi Jay;
I saw their new MagnaSine Hybrid with load support. The way the load
support works, sounds like it could work with a GT inverter, look at
this little tid bit from their home page:
The new MSH models add a Load Support feature, which allowsincoming
AC to synchronize with the
Ray,
The battery-based inverter in an AC-coupled system should not be
grid-interactive. The grid passes through the BB inverter to the grid-direct
inverter(s). The BB inverter is there to create a stable grid-like signal for
the grid-direct inverters when the grid is not present, and to manage
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