[RE-wrenches] 25 kW backfeed limit circuit

2019-06-25 Thread Mac Lewis 
Hello Wrenches,

I'm working with a small utility on a large residence for grid-tie solar
with a wind-turbine.  They have a 25 kW backfeed limit.  Its a 4 stack
radian system with about 25 kW of solar and 10 kW of wind.  The wind is AC
coupled Bergey and the solar is DC coupled with FM100s.  My idea was to use
the Radians to limit the solar to 15 kW and let the wind do its thing.
However, the utility doesn't like the idea that this limit could be changed
without their knowledge.

Has anyone designed and/or implemented a backfeed limiting circuit that
could knock some charge controllers off-line in case that 25 kW limit is
reached.  Is there anything off-the-shelf that can do that?

Thanks in advance

-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] AC/DC coupling on conext

2019-06-25 Thread Glenn Burt 
It is the StorEdge that is actually connected to the grid and it can be 
programmed in a variety of modes. One is to not export.-GlennSent from my 
'smart'phone, so please excuse typos and spelling errors.-- Original 
message--From: AndrewDate: Tue, Jun 25, 2019 12:14 PMTo: 'RE-wrenches';Cc: 
Subject:Re: [RE-wrenches] AC/DC coupling on conextI would love to use that 
setup but I cant export any power, I can buy it but nothing can go back to the 
grid. Can the LG Chem be programmed to do that? I havent put one in yet but 
really want too. Andrew PerkinsGreenwiredP: 707-923-2001 ext. 1001150 #1 
Evergreen RdRedway, CA 95560www.greenwired.com   From: RE-wrenches 
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of August 
GoersSent: Monday, June 24, 2019 3:29 PMTo: RE-wrenchesSubject: Re: 
[RE-wrenches] AC/DC coupling on conext Andrew - I imagine you've already 
considered a StorEdge and LG Chem battery? AugustLuminalt On Mon, Jun 24, 2019 
at 11:18 AM Andrew  wrote:Wrenches,    I got 
a situation where I got a client who wants to get solar with battery backup but 
where he is located the grid cannot currently accept incoming solar, but we can 
buy from them. I was thinking about doing an conext xw system and then 
solaredge ac coupling for module level shutdown but I don’t know how well that 
would be on the conext side of things for charging some discover lithium ion 
batteries? I would rather do standard DC coupled system but not familiar with 
any of those 3rd party rapid shutdown devices(fire raptor and midnite?), has 
anyone used any before? Andrew PerkinsGreenwiredP: 707-923-2001 ext. 1001150 #1 
Evergreen RdRedway, CA 95560www.greenwired.com 
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[RE-wrenches] Sunpower Ensemble

2019-06-25 Thread Dave Tedeyan 
Hi All,

Does anyone out there have any good information about Enphase Ensemble? I
am doing a solar + storage design for a new home, where the customer is set
on using Ensemble even though it is not yet available. So I am trying to
design for adding it in the future, although it is tough to get specific
information. Some questions I have:
-Will it have its own transfer switch?
-Will the batteries, solar and backed up loads all connect into the same
backup loads panel? -Does it do whole house backup?
-Do you need to use the IQ combiner box for the solar combiner?
-The batteries will have their own integrated microinverters that should be
able to charge the batteries, and also power loads and form a grid signal
to keep the rest of the solar producing, correct?
-I was told that there will need to be at least as many IQ8's as IQ7
microinverters in the array, which means that half the MI's will need to be
upgraded. Can anyone confirm this?
-Will Sunpower AC modules be compatible?

If anyone out there has any of this info, that would be much appreciated!
Cheers,
Dave

*Dave Tedeyan, PE*
Senior Engineer | Taitem Engineering, PC

110 South Albany Street | Ithaca, NY 14850
o. *607.277.1118 x121*  f. 607.277.2119
www.taitem.com

Solar • Sustainability • Energy • Design
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Re: [RE-wrenches] AC/DC coupling on conext

2019-06-25 Thread Dave Angelini Offgrid Solar 


Andrew, 

Did you see the self consumption or backup on XW+? Also XWPro
is only a bit more and has a 10 product warranty on it. If you used this
with the Discover AES LFP, xanbus can directly link Soc and all battery
data to anywhere in the world on Insight2.


https://solar.schneider-electric.com/solution/commercial-self-consumption/
[1] 

On Tue, 25 Jun 2019 09:14:24 -0700, "Andrew"  wrote:   

I would
love to use that setup but I cant export any power, I can buy it but
nothing can go back to the grid. Can the LG Chem be programmed to do that?
I havent put one in yet but really want too. 

Andrew Perkins 

Greenwired


P: 707-923-2001 ext. 100 

1150 #1 Evergreen Rd 

Redway, CA 95560


www.greenwired.com 

FROM: RE-wrenches
[mailto:re-wrenches-boun...@lists.re-wrenches.org] ON BEHALF OF August
Goers
SENT: Monday, June 24, 2019 3:29 PM
TO: RE-wrenches
SUBJECT: Re:
[RE-wrenches] AC/DC coupling on conext 

Andrew - I imagine you've already
considered a StorEdge and LG Chem battery?  

August   

Luminalt   

On
Mon, Jun 24, 2019 at 11:18 AM Andrew  wrote: 

Wrenches, 

 I got a
situation where I got a client who wants to get solar with battery backup
but where he is located the grid cannot currently accept incoming solar,
but we can buy from them. I was thinking about doing an conext xw system
and then solaredge ac coupling for module level shutdown but I don't know
how well that would be on the conext side of things for charging some
discover lithium ion batteries? I would rather do standard DC coupled
system but not familiar with any of those 3rd party rapid shutdown
devices(fire raptor and midnite?), has anyone used any before? 

Andrew
Perkins 

Greenwired 

P: 707-923-2001 ext. 100 

1150 #1 Evergreen Rd


Redway, CA 95560 

www.greenwired.com [3]


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Re: [RE-wrenches] AC/DC coupling on conext

2019-06-25 Thread Lones Tuss 
Hello Drake
This is from the App note
OutBack’s Frequency Shift AC Coupling is only employed in the Radian GS(A) 
class inverter at this time. It requires a firmware upgrade on both the Radian 
inverter and MATE3s system display and controller. The firmware is only 
available by download on the OutBack Power website.

The GS-AC-GEN –KIT is available from Distributors.
It contains the needed breakers and relays the app note shows the wiring.
Take Care Sir

From: RE-wrenches  On Behalf Of 
drake.chamber...@redwoodalliance.org
Sent: Monday, June 24, 2019 2:57 PM
To: RE-wrenches 
Subject: Re: [RE-wrenches] AC/DC coupling on conext

Hi Lones,

Can the frequency shift be retrofitted to an earlier radian, four + years old? 
The unit now has the obsolete, remote operated circuit breaker (ROCB) that I'm 
a bit concerned about.

Thanks,

Drake


- Original Message -
From:
"RE-wrenches" 
mailto:re-wrenches@lists.re-wrenches.org>>

To:
"RE-wrenches" 
mailto:re-wrenches@lists.re-wrenches.org>>
Cc:

Sent:
Mon, 24 Jun 2019 19:32:22 +
Subject:
Re: [RE-wrenches] AC/DC coupling on conext

Hi Andrew
OutBack now has AC Coupling for the Radian using frequency shift.
Below is a link to the Ac Coupling/ Frequency Shift App Note located on the 
OutBack website.
http://www.outbackpower.com/downloads/documents/appnotes/acc_freq_app_note.pdf
You also state the client wants to “get solar” in a situation where the grid 
cannot accept incoming solar.
The radian has several modes which utilizes solar and will prevent sell back. 
This might be an option to consider.
Take Care Sir


From: RE-wrenches 
mailto:re-wrenches-boun...@lists.re-wrenches.org>>
 On Behalf Of Andrew
Sent: Monday, June 24, 2019 11:18 AM
To: RE-wrenches 
mailto:re-wrenches@lists.re-wrenches.org>>
Subject: [RE-wrenches] AC/DC coupling on conext


** [EXTERNAL EMAIL] - Please report any suspicious attachments, links, or 
requests for sensitive information to the Help Desk. **
Wrenches,
I got a situation where I got a client who wants to get solar 
with battery backup but where he is located the grid cannot currently accept 
incoming solar, but we can buy from them. I was thinking about doing an conext 
xw system and then solaredge ac coupling for module level shutdown but I don’t 
know how well that would be on the conext side of things for charging some 
discover lithium ion batteries? I would rather do standard DC coupled system 
but not familiar with any of those 3rd party rapid shutdown devices(fire raptor 
and midnite?), has anyone used any before?


Andrew Perkins
Greenwired
P: 707-923-2001 ext. 100
1150 #1 Evergreen Rd
Redway, CA 95560
www.greenwired.com


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Re: [RE-wrenches] AC/DC coupling on conext

2019-06-25 Thread August Goers 
Andrew -

With the StorEdge and LG Chem product, the StorEdge inverter (DC coupled
inverter for both PV and the battery) is the brains of the system and can
be programmed to your liking. If you are not familiar with the product, you
should check it out.

https://www.solaredge.com/us/products/storedge#/

August


On Tue, Jun 25, 2019 at 9:14 AM Andrew  wrote:

> I would love to use that setup but I cant export any power, I can buy it
> but nothing can go back to the grid. Can the LG Chem be programmed to do
> that? I havent put one in yet but really want too.
>
>
>
> Andrew Perkins
>
> Greenwired
>
> P: 707-923-2001 ext. 100
>
> 1150 #1 Evergreen Rd
>
> Redway, CA 95560
>
> www.greenwired.com
>
> [image: Description: signature]
>
>
>
>
>
>
>
> *From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
> Behalf Of *August Goers
> *Sent:* Monday, June 24, 2019 3:29 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] AC/DC coupling on conext
>
>
>
> Andrew - I imagine you've already considered a StorEdge and LG Chem
> battery?
>
>
>
> August
>
> Luminalt
>
>
>
> On Mon, Jun 24, 2019 at 11:18 AM Andrew  wrote:
>
> Wrenches,
>
> I got a situation where I got a client who wants to get
> solar with battery backup but where he is located the grid cannot currently
> accept incoming solar, but we can buy from them. I was thinking about doing
> an conext xw system and then solaredge ac coupling for module level
> shutdown but I don’t know how well that would be on the conext side of
> things for charging some discover lithium ion batteries? I would rather do
> standard DC coupled system but not familiar with any of those 3rd party
> rapid shutdown devices(fire raptor and midnite?), has anyone used any
> before?
>
>
>
> Andrew Perkins
>
> Greenwired
>
> P: 707-923-2001 ext. 100
>
> 1150 #1 Evergreen Rd
>
> Redway, CA 95560
>
> www.greenwired.com
>
> [image: Description: signature]
>
>
>
> ___
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Re: [RE-wrenches] AC/DC coupling on conext

2019-06-25 Thread Andrew 
I would love to use that setup but I cant export any power, I can buy it but 
nothing can go back to the grid. Can the LG Chem be programmed to do that? I 
havent put one in yet but really want too.

 

Andrew Perkins

Greenwired

P: 707-923-2001 ext. 100

1150 #1 Evergreen Rd

Redway, CA 95560

www.greenwired.com

Description: signature

 

 

 

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of August Goers
Sent: Monday, June 24, 2019 3:29 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC/DC coupling on conext

 

Andrew - I imagine you've already considered a StorEdge and LG Chem battery?

 

August

Luminalt

 

On Mon, Jun 24, 2019 at 11:18 AM Andrew  wrote:

Wrenches,

I got a situation where I got a client who wants to get solar 
with battery backup but where he is located the grid cannot currently accept 
incoming solar, but we can buy from them. I was thinking about doing an conext 
xw system and then solaredge ac coupling for module level shutdown but I don’t 
know how well that would be on the conext side of things for charging some 
discover lithium ion batteries? I would rather do standard DC coupled system 
but not familiar with any of those 3rd party rapid shutdown devices(fire raptor 
and midnite?), has anyone used any before?

 

Andrew Perkins

Greenwired

P: 707-923-2001 ext. 100

1150 #1 Evergreen Rd

Redway, CA 95560

www.greenwired.com

Description: signature

 

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Re: [RE-wrenches] AC/DC coupling on conext

2019-06-25 Thread Andrew 
Tigo awesome I will check them out thanks Jerry!

 

From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf 
Of Jerry Shafer
Sent: Monday, June 24, 2019 5:47 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] AC/DC coupling on conext

 

Andrew

You may want to look at Tigo for the MLSD, Outback Radian and Blue Ion LI 
battery W/integrated BMS

Jerry

 

On Mon, Jun 24, 2019, 11:18 AM Andrew  wrote:

Wrenches,

I got a situation where I got a client who wants to get solar 
with battery backup but where he is located the grid cannot currently accept 
incoming solar, but we can buy from them. I was thinking about doing an conext 
xw system and then solaredge ac coupling for module level shutdown but I don’t 
know how well that would be on the conext side of things for charging some 
discover lithium ion batteries? I would rather do standard DC coupled system 
but not familiar with any of those 3rd party rapid shutdown devices(fire raptor 
and midnite?), has anyone used any before?

 

Andrew Perkins

Greenwired

P: 707-923-2001 ext. 100

1150 #1 Evergreen Rd

Redway, CA 95560

www.greenwired.com

Description: signature

 

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