oun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Drake
Chamberlin
Sent: Wednesday, March 03, 2010 9:41 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] Generators and Grid-tie Systems
The issue of what will or will not hurt an inverter, when connected to a
ge
Yamaha is good. Subaru/Makita/Baldor is good.
What brands of generators have you had good experience synching with off-grid
inverters (Outback, Magnum, Xantrex)? We sell Kohler, but we'd like to offer an
alternative (that we could sell). I've heard good things about Honda, but I've
heard that you need to be a Honda dealer to sell them. Any
On Mar 2, 2010, at 11:57:26 AM, "Darryl Thayer" wrote:
But I have tried a few times and I can not ever get a grid tied inverter to
sync with a generator.
It depends on the generator. Yesterday I ran a kohler 12 res with a parallel
connected sb7000. I monitored the freq during the connect time
The issue of what will or will not hurt an inverter, when connected
to a generator, does not seem to be resolved. The fail safe method,
of course, is to connect to the line side of the transfer
switch. Other than that, there are varied views.
There are systems in operation that intentionally
SMA has an intelligent dump load that works with their AC coupled systems.
It's call a Smart Load, but I don't think they have a UL listed version. SMA
has some pretty impressive technology along the lines of AC coupling that
they've chosen not to make for the US market.
Dana
Dana Brandt
Ecotech
I know a guy in Colombia who connects his Magnatek Aurora inverter to
a genset when the grid is down. Seems to work most of the time.
He's got some sort of chinese turbine and chinese controller that
dumps power off the back-up generator when necessary.
Isn't there some way to detect reverse
, 3/2/10, Jason Szumlanski wrote:
> From: Jason Szumlanski
> Subject: Re: [RE-wrenches] Generators and Grid-tie Systems
> To: re-wrenches@lists.re-wrenches.org
> Date: Tuesday, March 2, 2010, 1:22 PM
> While inverters are supposed to work
> this way, and do so very well on
&g
While inverters are supposed to work this way, and do so very well on
the grid, have any inverters been formally TESTED with various
generators to confirm the theory?
Anecdotes and theories are not enough. Until there are TESTS and
guarantees from inverter manufacturers that expensive generator co
All,
If the grid-tie inverter is operating under UL1741 (and therefore IEEE1547),
then the inverter has to cease output within 1 second of the voltage going
over 10% of the base voltage. So in the case where the generator is
outputting and the load is less than the inverter output, the voltage wi
ling.
Nick Soleil
Project Manager
Advanced Alternative Energy Solutions, LLC
PO Box 657
Petaluma, CA 94953
Cell: 707-321-2937
Office: 707-789-9537
Fax: 707-769-9037
From: Jason Szumlanski
To: re-wrenches@lists.re-wrenches.org
Sent: Mon, March 1, 2010 3:50:23 PM
Subject: Re: [RE-wrenches] Gener
At 06:50 PM 3/1/2010, you wrote:
You Wrote
"This is déjà vu.
The only other choice would be to use a contactor
to ensure PV disconnection when the grid is down
- then you could tap the PV on the load side of the transfer switch."
This is definitely deja vu all over again. A
system I de
-789-9537
Fax:707-769-9037
From: Jason Szumlanski
To: re-wrenches@lists.re-wrenches.org
Sent: Mon, March 1, 2010 3:50:23 PM
Subject: Re: [RE-wrenches] Generators and Grid-tie Systems
This is déjà vu.
I would say that the only safe and "correct" way is to connect
This is déjà vu.
I would say that the only safe and "correct" way is to connect the PV inverter
output on the line side of the transfer switch. If you are on the generator
side of the xfer switch, you are asking for trouble. The only other choice
would be to use a contactor to ensure PV disconn
Eric,
The inverter output should connect to the grid, either at the meter or
main panel, as if the generator isn't there. The critical (backed up)
loads should be moved to a separate panel. Install feeders between the
two panels, with a transfer (either/or) switch somewhere in the line.
The tra
Hi Eric:
Did you notice my e-mail on this subject last week? I was hoping that
someone would have some new, more concrete information on this subject, but I
guess the old story still applies. Here is the basic run down.
The inverters will likely see the generator as utility power, espec
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