Re: [RE-wrenches] SMA US 40 & AC coupling

Mon, 13 Mar 2017 10:25:49 -0700 

I talked with Tim at SMA today, and the
new  Sunny Boy inverters will  provide taper
charging with the Sunny Islands even though no RS
485 communication is available. The Sunny Boys
need to be programmed in the off grid mode, and
the Sunny Islands will take care of the UL 1741 requirements.

The graph below shows the relation between
frequency shift and % power produced by the Sunny Boy inverters.
Emacs!


Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
740-448-7328
<http://athens-electric.com/>http://athens-electric.com/
At 11:36 AM 3/10/2017, you wrote:

I just checked with SMA and they do not have an
RS485 card for the -40 inverters. What this
means is that you can set them up to be
permanently in off grid mode where the SB will
follow the frequency shift of the SI, ok for an
off grid system. But for grid tie with backup,
the SB will not communicate with the SI and will
not change the SB to off grid mode. It will
still work like other generic AC coupled systems
where the frequency shift will cause the SB
inverter to drop off line, but as far as I know no throttling back will happen.

Brad

On Fri, Mar 10, 2017 at 6:12 AM, Drake
<<mailto:drake.chamber...@redwoodalliance.org>drake.chamber...@redwoodalliance.org>
wrote:
I talked to SMA tech support. They said the 5.0
and 6.0 models were compatible with AC coupling.
AEE supplied the SI 485PB NR Piggyback card with RJ 45 cable.

At 06:45 AM 3/10/2017, you wrote:

Well my supplier was not aware of any
additional part# for this purpose. Nor was
their anything in their manual stating compatibility.
Part# PLEASE, It does seem short sighted of the
company who pioneered AC Coupling to no longer
provide us w/ equipment for said ACC.

On Mar 9, 2017, at 8:47 AM, Drake
<<mailto:drake.chamber...@redwoodalliance.org>
drake.chamber...@redwoodalliance.org> wrote:

I was told by SMA tech support that the new
SMA US 40s were compatible with AC coupling. I
was provided with interface cards for the purpose.

At 04:21 PM 3/8/2017, William Miller wrote:

What are the limitations of the new SMA inverters?

Drake



Wrenches:
Â
As a caution:  The TL22 inverters have
been discontinued.  The TL40s have some
limitations as compared to the TL22s, in my
opinion.  You may still find TL22s on the shelf.
Â
William
Â
Â
<28a7dc11.jpg>
Lic 773985
<http://www.millersolar.com/>millersolar.com
<tel:(805)%20438-5600>805-438-5600
Â
From: RE-wrenches [
<mailto:re-wrenches-boun...@lists.re-wrenches.org>mailto:re-wrenches-boun...@lists.re-wrenches.org]
On Behalf Of Tump
Sent: Wednesday, March 08, 2017 1:13 PM
To: <mailto:findso...@herzfeld.org>findso...@herzfeld.org; RE-wrenches
Subject: Re: [RE-wrenches] Aquion Batteries
Â
I have dual Sunny Islands & dual SB
4000TL22US Â w/ 20 stack on one and another
site w/ the Aspen 48M w/ Schneider. I
will say this; cost per amp hour of storage
 sucks w/ the Aquion batteries. Both my
client and I feel, that the batteries,
despite there size have very little capacity.
The “30†%DOD, that I haI have the SIs
set to start the Gen set, charges the stacks
OK but one gets better performance from Â
charging w/slower solar source. The Aspen48M
is ~ 42X28X42†@563 AH of capacity, UnigyII
2000 Ah ~ 42x40x6’ tall. Batteriesies are
defiantly temperature sensitive, operating
should be ~ 60*. The set up w/ the SMA
product, adds additional cost due to the
required  BM200 AND  the Sunny Island
Interface Device, and the SM100 unless you
are buying theAspen48M which comes pre wired.
(Aspen 48M which comes thru w/ the sensing
module installed).  It is quite helpful,
if this is an off grid install due to the
fact that the BM200 needs and when things go
south Aquion can toggle the unit off site and
help w/ configuration &Â upgrades, to be
connected to the internet. This install also
needs the correct firmware to be installed on
the SI which when  was delivered, the
firmware  would only load into the master
then shut down the system. Had toÂ
reconfigure as 2Â separate units, load the
firm ware and then reconfigure for 2 phase.Â
I have spoken to the manufacture re/ lack of
capacity and was told that must be my loads…. NOT.Â
>I would suggest that despite their hype
these are quite expensive and require quite
a bit more of labor IF you are wiring theÂ
un sensed stacks. And there is definitely
a learning curve if you are using the SI.
My own system and what I prefer to push IS
the SMA SI w/ the SMA SBs (make sure that you
get the TL22s as the newest SB is not
compatible for “ AC coupling†in this
configuration) w/) w/ the Unigy II/MK line.
(same battery) These have buss bars, stackÂ
vertically , the interlocking stacks is
perfect for earthquake locations. AND are totally recyclable.
Pictures  of the SMA install & insights
of battery installation available, contact me off line.  TUMPÂ
 Â
On Mar 8, 2017, at 12:55 PM, Martin Herzfeld
<<mailto:findso...@herzfeld.org>findso...@herzfeld.org > wrote:
Â
Has anyone worked with them with a Sunny
Island?  Space is not an issue for this client.
Martin Herzfeld, IREC Certified Master
Trainer ™ for PV Innstallation Professional #IREC 10037
California Solaar Contractor License  #00833782  C46, D56, D31, C-7
Solar, Trenching, Pole Installation & Maintenance, Instrumentation
UL Certified PV Installer #17, OSHA 30
OSHA-Authorized Construction Trainer #C0068034
CompTIA Certified Technical Classroom Trainer (CTT+) #T3NSZCNBBKB4QTQG
Registered NABCEP Continuing Education (CE) Provider
   Â
Â
On Jul 20, 2016 2:00 PM, "Jerry Shafer"
<<mailto:jerrysgarag...@gmail.com>jerrysgarag...@gmail.com > wrote:
We had a customer request them but once we
found out how many it would take, he decided
on the deka unigee instead. l dont like
running my OB's at such a low voltage as they
seem to get hotter due to the higher current.
Some of our other product lines don't even
reccomend aquions due to that low voltage,
suggest asking your inverter manufacture too.
Â
On Jul 20, 2016 10:52 AM, "Drake"
<<mailto:drake.chamber...@redwoodalliance.org>
 drake.chamber...@redwoodalliance.org> wrote:
Hello Wrenches,
I have a client who is going to take the
plunge and buy a set of Aquion Batteries.
They look pretty good on paper, but I'm not
sure how well an inverter would function at
the 40 V minimum. Does anyone have experience
to recommend them or warn against using them?
Thanks,
Drake
Drake Chamberlin
Athens Electric LLC
OH License 44810
CO License 3773
NABCEP Certified Solar PV
<tel:740-448-7328>740-448-7328
<http://athens-electric.com/>http://athens-electric.com/
Â
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              Â
********  MAINE'S CHARTER ********
              Â
       NABCEP    "Certified PV Installer"Â
  Â
         Â
    ********  MAINE'S CHARTER ********
              Â
   Trace Xantrex "Certified" Dealer / Installer"
Â

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t...@swnl.net             Â
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                Solarwinds Northernlights     Â
       Serving Mid Coast Maine & Northern California
                      Â
  <tel:(207)%20832-7574>207-832-7574   Cl.
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                              Blair "TUMP" May

               ********  MAINE'S CHARTER ********
                   Â
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              ********  MAINE'S CHARTER ********
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