You can even buy a kit.
https://www.solar-electric.com/outback-power-gs-ac-gen-kit-generator-back-up-kit.html
This provides an enclosure for the contactor.
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On 2021-05-04 16:03, Jason Szumlanski wrote:
What happens when the contactor fails? I don't trust a NC contactor that is supposed to
I suppose the question here is - which is the worse failure mode?
A. Solar turning off until an electrician can fix it.
OR
B. Not knowing the contactor failed until it does not open when the
generator turns on and running the risk that the solar backfeeds the
generator and breaks it.
For off-grid
Jason,
A valid concern which is why I always wire them as powered open so if there
is a failure it would transition closed or not open.
Christopher
On Tue, May 4, 2021 at 4:15 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:
> What happens when the contactor fails? I don't trust
What happens when the contactor fails? I don't trust a NC contactor that is
supposed to open on 240Vac coil voltage from the generator. It's not a
failsafe solution.
Jason
On Tue, May 4, 2021, 3:15 PM Drake
wrote:
> P.S. The contactor method is even mentioned somewhere in the Outback
> litera
P.S. The contactor method is even mentioned somewhere in the Outback
literature. I've been using it for years. It is very simple and
requires no complex equipment. It will not interfere with rapid
shutdown. 40 A, 240 V contactors with 240 V coils are readily
available and not terribly expensive
This may not be a good idea if you want to retain rapid shutdown compliance…
-Glenn
From: RE-wrenches On Behalf Of Jeff
Clearwater
Sent: Tuesday, May 04, 2021 12:20 PM
To: RE-wrenches ; Dave Tedeyan
Subject: Re: [RE-wrenches] Generator and AC coupling on a Sol-Ark
Hi Dave ~
Well th
Hi Dave ~
Well this might not be the answer you are looking for but I'd take a
serious look at the relative hassle of rewiring the array to DC.
Sol-Ark's shine in DC coupled mode - highly efficient - and then you
have the generator port open (now not used for AC coupling) available
for the ge
Dave,
My initial background comes from the Industrial Controls world w/ a strong
military influence. Given that the generator probably has some kind of
transfer switch, chances are that the transfer switch has a dry contact in
which can be used to power a relay. I normally use ASCO transfer switch
Get a contactor with a 240 VAC coil. Connect the coil wire wires to the
240 V output circuit of the generator, so when the generator comes on,
the contactor opens. Run the current from the AC coupled Enphase
inverters through the contacts from common to N/C.
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On 2021-05-03 10:26, Dave Tedey
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