In a message dated 11/20/2008 9:57:54 A.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
It opens when the genny is on) might be
easier than a NO relay on the grid-side. Anyone do it this way?
Kelly, I would do this and sleep at night.
Don
**One site has it all. Your
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-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Kelly
Keilwitz, Whidbey Sun & Wind
Sent: Thursday, November 20, 2008 12:31 PM
To: RE Wrenches listserve
Subject: Re: [RE-wrenches] grid-tie inverters & generators
Jay, Drake, Don, Jeff & Wr
ment, as I have heard of new improvements
that allow better gen and grid tie operation.
Darryl
--- On Thu, 11/20/08, Kurt Albershardt <[EMAIL PROTECTED]> wrote:
> From: Kurt Albershardt <[EMAIL PROTECTED]>
> Subject: Re: [RE-wrenches] grid-tie inverters & generators
>
I'm hearing that it "should" be OK, but to CYA install a relay.
Yes, but...
The real answer is to find a genset and inverter which can peacefully coexist.
I don't know what sort of regulator topology is used by the gensets we have
heard about, but that seems to be the key. Many commercial/i
Hi Dana,
I¹m hearing that it ³should² be OK, but to CYA install a relay.
We just secured a third such system this one with the generator and
transfer switch 200 feet away from the inverter. Installing a relay on this
one would mean 200 feet of conduit through driveway and landscaping. Or,
maybe
Hey Kelly,
I think that's probably the best solution. I don't think it should be
necessary with Sunny Boys in gridtied system, but it's certainly the safest
bet. I'm not sure if all SB's come with the right firmware, or if it's a
special option, but they can be programmed to allow for a wide grid
All,
I suppose a normally-closed relay on the inverter output, with coil
energized from the generator (i.e. It opens when the genny is on) might be
easier than a NO relay on the grid-side. Anyone do it this way?
-Kelly
On 11/20/08 9:30 AM, "Kelly Keilwitz" <[EMAIL PROTECTED]> wrote:
>
> The re
Jay, Drake, Don, Jeff & Wrenches,
The relay seems like a reasonable solution. However, if the main panel is
entirely backed up by the genny, to power the relay from the grid (only)
requires a line-side tap, yes? Is there a simple solution that I¹m missing?
We have another, similar system complete
Talking to SMA, during a 4248 Sunny Island installation, w/ AC
coupled Sunny Boys and a generator backup via transfer switch, I was
told that backfeed to the generator needed to be addressed. The
Sunny Island has a setting that will limit backfeed to the generator
to a value that can be set by
Hi Folks,
We burnt up a gen set's voltage regulator on an off-grid system sunny
island/sunny boy system when we took the sunny island's off-line but
didn't shut off the sunny boy. So the SB backfed the genny and fried
the very expensive voltage regulator on a 30 KW system. SMA had us
instal
Hi Kelly
It is an interesting issue and was just dicussing this the other day.
I think what happens if the inverter backfeeds the genny, the
generator voltage will go up, if it goes up enough, it will go outside
the window of the inverter and the inverter will drop out, voltage
will them r
In a message dated 11/19/2008 5:25:30 PM Pacific Standard Time,
[EMAIL PROTECTED] writes:
I can imagine, if the inverter tries to sync with the inverter, that the
voltage could rise, causing the inverter to disconnect, wait 5 minutes,
repeat.
Is there anything nasty that could happen?
At 06:24 PM 11/19/2008, you wrote:
Is there any issue connecting a batteryless grid-tie PV system to
the load side of a panel that is backed-up by a generator on an
automatic transfer switch, when the grid is down and the generator running?
It is recommended to use a relay to disconnect the i
Wrenches,
I'm dredging up this subject again (previous postings 6/08) with a simple
question that doesn't seem to have been answered:
Is there any issue connecting a batteryless grid-tie PV system to the load
side of a panel that is backed-up by a generator on an automatic transfer
switch, when th
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