mail.com<https://maxfieldso...@hotmail.com/>
(801) 631-5584(Cell)
www.distribution.solar
From: RE-wrenches on behalf of
Jason Szumlanski via RE-wrenches
Sent: Monday, October 30, 2023 8:32 AM
To: RE-wrenches
Cc: Jason Szumlanski
Subject: Re: [RE-wrenc
;
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *Jason Szumlanski via RE-wrenches
> *Sent:* Monday,
s charged and discharged very carefully. I do not believe
> AC-coupled charging is a good way to charge lithium batteries, or any
> battery.
>
>
>
> William Miller
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.m
www.millersolar.com
CA Lic. 773985
*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Jason Szumlanski via RE-wrenches
*Sent:* Monday, October 30, 2023 7:33 AM
*To:* RE-wrenches
*Cc:* Jason Szumlanski
*Subject:* Re: [RE-wrenches] AC Coupling
I read
ough
> Victron's monitoring. It almost makes it seamless as though it was all one
> brand.
>
> So in case it's not clear, I'm never a fan of 100% AC coupled PV, but
> these days there are very few legitimate concerns or issues... Most if not
> all of which disappear
or issues... Most if not all of
which disappear with a 10% - 60% DC coupled system.
Thanks,
Kienan
Green-Go Solar Wholesale Distribution
maxfieldso...@hotmail.com<mailto:maxfieldso...@hotmail.com>
(801) 631-5584 (Cell)
www.distribution.solar
________
From: RE-wrenches
en the newest inverters
> is a crude affair. I am not a fan.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
>
> *From:* Jay [mailto:j
*Sent:* Saturday, October 28, 2023 1:58 PM
*To:* will...@millersolar.com; RE-wrenches
*Subject:* Re: [RE-wrenches] AC Coupling
I’m going to both agree and disagree
Agree The older inverters ( Schneider, Outback, etc) your drawing is
correct.
Disagree For many new inverters ( sol ark, ev4, fort
And just to muddy the waters a little, 2023 NEC uses AC Connected and DC
connected wording in place of coupled. Same concept, new name.
On Sat, Oct 28, 2023 at 5:01 PM Roland - RES via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Agreed and we'll understand the differences, all of ou
Agreed and we'll understand the differences, all of our SMA SI systems utilize both dc charging and AC coupled charging.Roland ShackelfordPresident / OwnerNABCEP PVIP #091209-162Office 808.775.7410Mobile 808.938.9239Power Solutions for Generations Renewable Energy Services, Inc." Where there is int
I’m going to both agree and disagree Agree The older inverters ( Schneider, Outback, etc) your drawing is correct. Disagree For many new inverters ( sol ark, ev4, fortress) they bring ac coupling into the inverter directly. Usually on the generator input and not in the backup loads panel. And I wil
I agree totally with your drawings.
On Sat, Oct 28, 2023 at 4:17 PM William Miller via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:
> Friends:
>
>
>
> I am starting to get the impression that there is a diversion on the
> understanding of the definition of AC coupling within the indust
Friends:
I am starting to get the impression that there is a diversion on the
understanding of the definition of AC coupling within the industry. I
think this definition needs to be clarified.
Below is a diagram of what I understand is a DC coupled system (I hope
these diagrams come through)
Are there any options out there similar to the Enphase System Controller
MID that directly couple the AC outputs of a PV inverter and generator to
simultaneously power loads? And can any do it with or without batteries
involved?
Jason Szumlanski
Florida Solar Design Group
_
Sam,
Thanks for pointing me in that direction. It looks like you can update some
of the grid protection settings, although I am not sure if that will allow
for freq-watt control. My LG rep told me to use CA rule 21 grid profile,
but I am not sure if there is something like that on the old A series
Good Morning, Dave,
Take a look at this pdf and see if the info about setting up "Grid
Protection" gets you anywhere. Starting on page three it shows how to make
the Vmin/max and Fmin/max for screened inverters. What I can't verify for
you is whether the A series has the same menu structure as h
Hi all,
Does anyone know if you can make the SolarEdge inverters (the A series,
before the HD wave inverters) respond to frequency control? I cannot find a
way to update the grid settings, and was wondering if anyone else has AC
coupled these inverters to a non-SolarEdge battery system. If not, it
that I can use in the book as a universal explanation of how this
> works? It can be SMA documentation, or other ref. You can reply here if
> it's useful to the list, and/or contact me off-line.
>
> Thanks! – Windy
>
> On Dec 1, 2022, at 5:47 PM, re-wrenches-requ...@lists.
act me off-line.
Thanks! – Windy
> On Dec 1, 2022, at 5:47 PM, re-wrenches-requ...@lists.re-wrenches.org wrote:
>
> From: Harry Mahon <mailto:michael.ma...@sma-america.com>>
> Subject: Re: [RE-wrenches] AC Coupling Standard?
> Date: December 1, 2022 at 5:47:18 PM MST
&g
When AC coupling using 2 or more OB radian inverters, it is only the master
inverter(at least that's where ac-coupling status shows as "yes") which can
be set to, and perform "ac-coupling", correct? The Mate3s option to enable
AC-coupling does not specify individual ports(inverters) to select and
e
>From an Outback application note:
"Precautions Using a Generator When AC Coupling
Most residential generators, and even some commercial grade generators, are
not designed to
synchronize with another AC source. They may experience catastrophic
failure if the other AC source is
a “stiffer” source
Jeremy
With a mate 3 and a hub. Wire the out- puts into their own breaker in a
service panel then out to the critical loads panel
- Original Message -
From: Jeremy Rodriguez
To: RE-wrenches
Sent: Friday, December 28, 2018 12:30 PM
Subject: [RE-wrenches] AC Coupling with
I have been reading Outbacks AC coupling note.
It refers to using only a single Radian Inverter.
Is it possible to duplicate the equipment if more PV is installed, and use two
Radians, with their outputs paralleled to the critical loads panel?
I see it recommends 6Kw of PV with an 8048 Radian
Jer
Wrenches
You can still AC couple Outback, they just eliminated tha option because of
breaker issues but it can still be done using contactors all set to
normally open and configured by DC Voltage. With Outback there is no real
limit to battery capasity like you have with both the new SMA sunny boy
I've liked the StorEdge design of SolarEdge since it was first introduced a
few years ago, but have never done it even seen an instant with it. What
are others experience with it, especially compared to AC coupled battery
backup solutions?
Howie
On Jul 25, 2018 8:18 PM, "Scot Arey" wrote:
Yes I
Yes I had also heard from Outback that AC Coupling not supported.
Too bad because the AC coupling load center was slick setup and integration.
Scot
Get Outlook for Android
On Wed, Jul 25, 2018 at 10:29 AM -0600, "Kelly Keilwitz, Whidbey Sun & Wind"
wrote:
Larry,I rec
Larry,
I recommend considering retrofitting the SolarEdge “StorEdge” Li-ion battery.
It’s a high-voltage battery on the PV side of the inverter. We have a few out
there now for a few months without a problem. Really like the design concept of
the storage on the PV side, increasing system efficie
Kirpal
Thanks for the recommendations
If you have a diagram that would be most helpful and generous
What Lithium Battery are you using with this configuration?
Much Appreciated
Larry
Larry Brown
Sun Mountain
845-657-8096
sunmount...@netstep.net
On Jul 19, 2018, at 11:15 AM, Kirpal wrote:
Lar
Larry
I have had very good luck with Outback both with the FX and the newer
Radian systems, have not tried this with the new "R" inverter system, we
have used the contactors to reduce production once the batteries are full
in the off gird application. Simple and strait forward and been good
Jerry
Larry
Outback Radians work great.
peter
- Original Message -
From: "Larry Brown"
To: "RE-wrenches"
Sent: Thursday, July 19, 2018 10:07 AM
Subject: [RE-wrenches] Ac Coupling
Does anyone have a recommendation on a battery based inverter to AC Couple
with a
Brown
To: RE-wrenches
Sent: Thursday, July 19, 2018 10:07 AM
Subject: [RE-wrenches] Ac Coupling
Does anyone have a recommendation on a battery based inverter to AC Couple with
a Solar Edge 11400A-US Inverter that is already installed?
I have been working a lot with the Schneider Conergy XW
Larry.Outback Radian would work fine but you would need 2 of the 8kW
inverters for your ~11kW GT inverter. Outback recommends a maximum 75%
loading ratio when AC coupling. We have used a simple solid state relay
controlled by the Aux Out of the Radian to turn off one leg of the
SolarEdge or
I am working with a similar situation. It looks like the Tesla Powerwall
will work.
Kevin Eigel
Ecohouse Solar
On Thu, Jul 19, 2018, 10:07 AM Larry Brown wrote:
> Does anyone have a recommendation on a battery based inverter to AC Couple
> with a Solar Edge 11400A-US Inverter that is already in
You could ask them? I know the XW+ works fine with the SMA TL series grid
inverters. Phone: +1 866-519-1470
Email: re.techsupp...@schneider-electric.com --Dave
> Does anyone have a recommendation on a battery based inverter to AC Couple
> with a Solar Edge 11400A-US Inverter that is already in
Does anyone have a recommendation on a battery based inverter to AC Couple with
a Solar Edge 11400A-US Inverter that is already installed?
I have been working a lot with the Schneider Conergy XW+ Inverters for off grid
but have no experience AC Coupling them with a Solar Edge Inverter
Any recomme
I checked into the PRI strategy a few months back. An Outback
applications engineer responded that while they were collaborating with
SolarEdge at one time on the method, they don't recommend it any longer
and were going to pull the tech note. The response also questioned
whether SolarEdge stil
Hi Gary,
These Solar Edge inverters can use radio ripple control to change power
output. Its a simple control strategy that allows control of the power
output presumably from a grid-operator. You would need to enable the
RRCR. Here is a paper about that
http://www.solaredge.com/sites/default/fi
Maverick:
Thanks for responding. You've been very helpful in the past with
my battery based solution questions.
Daily load demand from the Protected Loads Panel is about 10kWh.
With 5 average daily peak sun hours, and 75% charging efficiency,
the batte
How many kWh are you shooting for?
> On Oct 17, 2016, at 9:54 PM, Gary Willett
> wrote:
>
> Esteemed Wrenches:
>
> Anyone have experience setting up AC coupling with SolarEdge and the Outback
> Radian?
>
> I have a client with a SolarEdge SE1A-US inverter, equipped with 31
> SunPower
It looks like way too much power to AC couple
with a 4KW Radian. Be sure to talk to an Outback
engineer in great detail before using the GSLC175AC-120/240.
At 10:54 PM 10/17/2016, you wrote:
Esteemed Wrenches:
Anyone have experience setting up AC coupling
with SolarEdge and the Outback Radian?
Esteemed Wrenches:
Anyone have experience setting up AC coupling with SolarEdge and the
Outback Radian?
I have a client with a SolarEdge SE1A-US inverter, equipped with
31 SunPower X21-345 modules (10.7kWp) and associated SolarEdge P400
DC optimizers. Th
.
>
>
>
> Brian
>
> AEE Solar
>
> bteitelb...@aeesolar.com
>
>
>
>
>
> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Howie Michaelson
> Sent: Monday, June 06, 2016 8:56 AM
> To: RE-wrenches
> Subject: [RE-wrenches] AC coup
Hi all,
Apparently SolarEdge is no longer officially supporting or warranting AC
Coupling - maybe because they now have the StorEdge option (has anyone
actually seen one for sale and/or operating). In any case, since I have
sold prior to missing that memo and am now in the position of installing a
irm that the OB is not set in search, yhis will cause
issues like this.
Jerry
Sent from my Verizon Wireless 4G LTE smartphone
Original message
From: jay mailto:jay.pe...@gmail.com>>
Date: 09/21/2015 6:58 AM (GMT-10:00)
To: RE-wrenches <mailto:re-wrenches@lists.re-wr
; From: jay
> Date: 09/21/2015 6:58 AM (GMT-10:00)
> To: RE-wrenches
> Subject: [RE-wrenches] AC-coupling Enphase/XW Causes Flickering of Lights
>
> Hi Matt,
>
> I can’t tell you the reason but I had the same problem on my Outback VFX.
> I didn’t put it on a O scope,
WrenchesCheck and confirm that the OB is not set in search, yhis will cause
issues like this.Jerry
Sent from my Verizon Wireless 4G LTE smartphone
Original message
From: jay
Date: 09/21/2015 6:58 AM (GMT-10:00)
To: RE-wrenches
Subject: [RE-wrenches] AC-coupling
Hi Matt,
I can’t tell you the reason but I had the same problem on my Outback VFX.
I didn’t put it on a O scope, but sure looked like a 60 cycle flicker to me.
On my system of 2 enphase, when the loads exceeded the output of the enphase
the flicker when away.
But only 2 isn’t very real world.
I wired an Enphase string into my critical loads panel at my shop. I was
curious to see how it would work as I have customers with Enphase systems
that occasionally contact me about adding a battery backup system.
Why do the fluorescent lights and LEDs flicker once the grid power is
dropped. The
I'll tell you exactly how to do this, if I understand the SolarEdge
documentation. I am working on a similar project, but using a contactor to
disconnect three 10KW String inverters.
Forget the Radio Ripple. The SolarEdge has a simple four line control
system. SMA has the same thing on it's Power C
.com
| Address: 3700 Gilmore Way, Burnaby, BC V5G4M1
*** Please consider the environment before printing this e-mail
From:
jay peltz
To:
RE-wrenches ,
Date:
12/10/2014 10:13 AM
Subject:
Re: [RE-wrenches] AC coupling SolarEdge
Sent by:
"RE-wrenches"
Question
Is the H
> Question
Is the Hz shift/ power reduction included/required in all battery less
inverters?
Thanks
Jay
Peltz power___
List sponsored by Redwood Alliance
List Address: RE-wrenches@lists.re-wrenches.org
Change listserver email address & settings:
htt
Mac
Outback makes a AC couple ready radian wired box its nice because it
already has the relay to kill the PV system along with the programming to
make it work
Jerry
On Wed, Dec 10, 2014 at 6:04 AM, jay peltz wrote:
> Hi Mac,
>
> It looks like they are doing all that work on the AC side.
> If yo
Hi Mac,
It looks like they are doing all that work on the AC side.
If you do the DC side, you'll lose the comm from the optimizers causing error
messages etc.
For the few times a year this will actually need to regulate, depending on the
battery inverter I'd install a AC relay and kill the who
Hello wrenches,
I have a request to design a modest battery backup system for a residence
that has a 10 kW grid-tied Solar Edge system using a single SolarEdge
Inverter SE1A- US. I'd like to try to utilize the solar potential that
we have on site. One idea that I had was to use DC relay(s) t
his comments (below).
Dan
On Mon, 6/16/14, Mac Lewis wrote:
Subject: Re: [RE-wrenches] AC Coupling Relays
To: "RE-wrenches"
Date: Monday, June 16, 2014, 10:59 AM
Hi Drake,
I think you can put a power diode in parallel to the gt inv
Hi Drake,
I think you can put a power diode in parallel to the gt inverter that can
conduct that inductive current if you need to. However, I think BoB is
correct, there should just be induction of the wiring itself for most
grid-tied inverter. The relay engineer recommended this diode for a DC
Since grid-tie inverters sell back with a power factor of 1, the load
~should~ be entirely resistive and
not inductive or capacitive so a appropriately rated relay contacts
~should~ be fine.
Except maybe if the inverter is designed to supply VARs like the last
Solar-Pro magazine talks about.
Hello Wrenches,
Do the relays that break the current from the direct grid tie
inverters, in AC coupled systems, need to be motor rated or can they
simply be rated for the amperage of the inverter output? How
inductive is the current between the two inverter systems? Will the
current tend to j
s
To: RE-wrenches
Sent: Wednesday, April 16, 2014 4:44 PM
Subject: [RE-wrenches] AC coupling with Fronius
Hello wrenches,
Has anyone had good success AC coupling with Fronius Inverters? If so, what
equipment did you use? Was this with an IG or an IG Plus?
I have had quite a few people lately wi
Mac,
I have a customer with 17kW on 3 Fronius inverters. He connected a cheap 40kW
china diesel generator during a week long power outrage. I was amazed when he
told me they sync'd up with no problems.
Larry
On Apr 16, 2014, at 1:44 PM, Mac Lewis wrote:
Hello wrenches,
Has anyone had good s
Have one with dual Xantrex XWs and a IG plus 10.0. Working good
Jeremy Rodriguez
All Solar
CO USA
- Original Message -
From: Drake
To: RE-wrenches
Sent: Thursday, April 17, 2014 9:15 AM
Subject: Re: [RE-wrenches] AC coupling with Fronius
We did one and it seems to work
We did one and it seems to work fine. We AC
coupled a pair of Sunny Islands to a Fronius IG
Plus 10.0-1 UNI. There might be a problem if you
are using a Radian with the Fronius.
At 04:44 PM 4/16/2014, you wrote:
Hello wrenches,
Has anyone had good success AC coupling with
Fronius Inverters?
Hello wrenches,
Has anyone had good success AC coupling with Fronius Inverters? If so,
what equipment did you use? Was this with an IG or an IG Plus?
I have had quite a few people lately with Fronius Inverters that would like
a backup solution and I'm not comfortable AC coupling these, but coul
Lars,
With the old Trace inverters? Were they 4.01 firmware or
4.10/4.30? Did you use the GTI? How did you AC couple them - which
input/output terminals?
And what was the rationale in an off grid scenario - distance to
sun in a shady forest?
I didn't
Hi Lars
I'm curious what you found those efficiency differences to be?
And how are you measuring inverter charging efficiency in the bi directional
mode
Thanks
Jay
Peltz power
Sent from my iPhone
On May 28, 2013, at 10:53 AM, "lars Ortegren" wrote:
> We have done a number of off grid AC
We have done a number of off grid AC coupling projects over the last eight
years. We have found they are successful with anything that comes close to a
true sign wave, including some of the old Trace inverters. I would be
careful to not come too close to the wattage of the source inverter, and
keep
It seems a little vague on that point. Talking to Fronius tech
support did not produce a definitive answer. I think so long as the
system is basically grid tied, it likely wouldn't. In the webinar,
the presenter said that Fronius wasn't worried about the AC relay
being switched on and off by th
Maybe their position has changed, but
the last time I looked into AC coupling a Fronius inverter I was
told by Fronius that it would void their warranty. Has that policy
changed?
Regards,
Gary Willett
Icarus Engineering LLC
O
I also saw that webinar. We had just coupled a Fronius 10K to a pair
of Sunny Islands. It seems to be working fine. It is a backup
system, so we have only tested it. SMA tech support assured me it
would work before we bought the system.
Is the Outback wave form unique in any way, causing the
Hi Jeremy,
FYI: I heard that Fronius is the most sensitive of the GT inverters and so the
most difficult to "fool" or keep on in an AC coupled system. That was from the
Magnum AC Coupling webinar.
Blessings,
Kelly
Kelly Larson
Electrical Engineer
NABCEP Certified Solar PV Installation Profes
Jeremy
I have a system on my house with 6 kW of grid tie inverters AC coupled to an
Outback Radian, which is actually two 4 kW inverters in one box. It works
great in full sun with the grid off. I don't see a problem with what you are
doing.
David Katz
Sent from my iPhone
On May 25, 2013, at
Hope everyone is enjoying their weekend!
I have a system where we have Installed a pair of XW inverters along with a 10k
Fronius inverter.
We have been told that we need to limit the PV watts to the lowest XW inverter.
We have XW capacity in excess of the array, so why can't they entire array fe
What brand of inverter are your using for the off-grid inverter. SMA has
addressed this issue with the Sunny Island. I'm looking at an all-SMA
option for a new installation, and also an SMA-Enphase AC Coupled system,
so I'll be interested to see what others with more AC coupling experience
have to
Hi Jeremy
Seems like a perfect place for the 600v controller from xantrex
Jay
Peltz power.
Sent from my iPhone
On Mar 18, 2013, at 7:23 PM, "Jeremy Rodriguez- All Solar Inc."
wrote:
> Wrenches,
> Here is my situation: GT string inverter - 3 strings of mods, 10KW DC. We
> need to redu
Wrenches,
Here is my situation: GT string inverter - 3 strings of mods, 10KW DC. We need
to reduce the PV when the grid is down as to not overload the AC coupled
inverters.
Is there a good way to limit PV input like shunt off some power or short part
of the array? (part)
I was first thinking
y HTC smartphone on the Now Network from Sprint!
- Reply message -
From: "Kirk Herander"
To: "'RE-wrenches'"
Subject: [RE-wrenches] AC coupling and Outback inverters
Date: Fri, Oct 5, 2012 5:08 am
I am leaning towards the SunnyIsland. I assume i
ts.re-wrenches.org] On Behalf Of David Katz
Sent: Friday, October 05, 2012 2:11 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC coupling and Outback inverters
Hi Kirk,
All of the Outback inverters will work AC coupled (GT and FX) as will any
bi-directional H-bridge type inverter. I have use
(many years of data comms experience B4 solar)
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of mac Lewis
Sent: Thursday, October 04, 2012 9:41 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC coupling and Outback inverters
Hi
solar.com
www.aeesolar.com
From: re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirk Herander
Sent: Thursday, October 04, 2012 2:11 PM
To: RE-wrenches
Subject: [RE-wrenches] AC coupling and Outback inverters
I have AC-coupled an Outback quad-stack with
Hi Kirk,
I would consider the Sunny Island option. Everything integrates nicely.
You can use the smartformer to get 240Vac if you need it at the critical
loads. This would give the Sunny Island Frequency control over the Sunny
Boy (assuming you can run Cat 5 to the Sunny Boy).
Good Luck.
On T
I have AC-coupled an Outback quad-stack with multiple SunnyBoy 6000US
inverters and it's been running fine for 4 years. I used the off-grid
version of Outbacks.
Now I have an application where a customer wants to add battery backup to an
existing SunnyBoy 5000US system. And expand his array by a c
Wrenches,
I found a post/thread from last April that Marc Edmunds had posted regarding
tech notes for the XW series inverters.
Also, Fronius cannot advise on how to ac couple their inverters! I am trying to
utilize an existing system and add battery backup, if possible.
Can anyone direct me to
ay, May 31, 2012 5:34 AM
To: 'RE-wrenches'
Subject: [RE-wrenches] AC Coupling
I currently have a dual Outback GTVFX system for the office at home and am
adding an SMA 4KW GIT system. We are going for 100% solar powered on the office
& home. Yahoo!
I would like to be able to AC s
I currently have a dual Outback GTVFX system for the office at home and am
adding an SMA 4KW GIT system. We are going for 100% solar powered on the
office & home. Yahoo!
I would like to be able to AC support the battery based GTVFX system in the
event of an extended power outage. I spoke with O
My query to Enphase on the subject and there response
Hello,
Here is a technote which talks about how to use the Xantrex XW with a grid
tied inverter.
http://www.global-download.schneider-electric.com/852577A4005D7372/all/8FA29D94B918A0FB8525781F0072FCA7/$File/ac-coupling-app-note(976-0240-01-0
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kent
Osterberg
Sent: Saturday, September 03, 2011 1:47 PM
To: al...@positiveenergysolar.com; RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Brian,
Is this the drawing?
Magnum ac coupled diagram
<http://www.google.com/url?s
volt section. The
only way this can be made up is to overcharge the 12-24 volt section such that
the 12 volt get charged.
DT
From: R Ray Walters
To: RE-wrenches
Sent: Saturday, September 3, 2011 6:18 PM
Subject: Re: [RE-wrenches] AC Coupling
Hi Jay;
I agree, for long outages, a generator
One should also factor in the availability of generator fuel if an extended
outage occurs. In some communities, the fuel will be scarce or non-existent,
especially if significant damage occurs to fuel transporation and storage
infrastructure.
--- Original Message ---
On 9/4/2011 01:
Hi Jay;
I agree, for long outages, a generator is the way to go. It just doesn't make
sense to have 5 days of lead acid battery sitting there for years waiting to be
used once or twice in an epic ice storm.
On the other hand, many places have very unreliable grid power with short
outages every
On Behalf Of Allan
Sindelar
Sent: Friday,
September 02, 2011 4:45 PM
To: RE-wrenches
Subject: Re:
[RE-wrenches] AC Coupling
Brian,
Could you speak a bit more to this, please? My understanding is that
the need with a string (or, I suppose, micro-) inverter and a
battery-b
Allan,
You're not the only one with your eyes spinning here. Let me clarify a bit as I
think you are making it more complicated than it is. There is no need for a
manual switch. The GT inverters feed into the sub panel which is being fed by
the Magnum. Since the Magnum is fed by the main panel t
4:45 PM
To:
RE-wrenches
Subject:
Re: [RE-wrenches] AC
Coupling
I have come to that conclusion as well Jay. 99% of our grid outages happen when
we have severe winter weather... this is also when there is NO solar. So the
battery based grid tie system sits there day after day operating at only ~85%
efficient Then, when the grid goes down you have "X" number
HI Larry,
I'll chime in here with the "other" option, ie no batteries at all.
Instead its a back up generator.
I've found them to be much cheaper, and if you are expecting a longer outage
then weather is usually a problem ie its overcast and therefor you'll need a
backup for your battery system
Brian Faley
Sent: Friday, September 02, 2011 5:21 PM
To: al...@positiveenergysolar.com; RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Hi Allen,
I'll try to describe the typical AC coupled system as well as I can.
In such a system, a NON-grid tied battery based inverter (i.e. Magnum M
g] On Behalf Of Allan
Sindelar
Sent: Friday, September 02, 2011 4:45 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Brian,
Could you speak a bit more to this, please? My understanding is that the
need with a string (or, I suppose, micro-) inverter and a battery-based
inverter
s-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Allan
Sindelar
Sent: Friday, September 02, 2011 4:45 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC Coupling
Brian,
Could you speak a bit more to this, please? My understanding is that the
need with a stri
Brian,
Could you speak a bit more to this, please? My understanding is that
the need with a string (or, I suppose, micro-) inverter and a
battery-based inverter is for a way to disconnect full batteries
from being overcharged when the grid is down and sell is disabled.
Hi Larry,
Magnum MS PAE inverters do indeed shift the inverter output frequency
when the battery is full in order to disconnect grid-tied inverters used
in AC coupled systems. It was designed to work in conjunction with a DC
diversion load - which is recommended if the system is larger than a
cou
Larry,
The Sunny Island is a solid solution.
Supposedly, the Magnum MS PAE inverters will wiggle the ac frequency to
disconnect the grid-only inverters when the batteries are full. I think
Magnum requires the diversion control as a backup. For a large system,
the diversion load ends up being
1 - 100 of 140 matches
Mail list logo
