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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. <br><br>
The graph below shows the relation between frequency shift and % power
produced by the Sunny Boy inverters. <br>
<img src="cid:7.1.0.9.0.20170313131416.07314ac8@redwoodalliance.org.0" width=497 height=235 alt="Emacs!">
<br><br>
Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a href="http://athens-electric.com/">http://athens-electric.com/</a>
<br>
At 11:36 AM 3/10/2017, you wrote:<br>
<blockquote type=cite class=cite cite="">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.<br><br>
Brad<br><br>
On Fri, Mar 10, 2017 at 6:12 AM, Drake
<<a href="mailto:drake.chamberlin@redwoodalliance.org">
drake.chamberlin@redwoodalliance.org</a>> wrote:<br>
<dl>
<dd>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. <br><br>
<dd>At 06:45 AM 3/10/2017, you wrote:<br>
<blockquote type=cite class=cite cite="">
<dd>Well my supplier was not aware of any additional part# for this
purpose. Nor was their anything in their manual stating
compatibility.<br>
<dd>Part# PLEASE, It does seem short sighted of the company who pioneered
AC Coupling to no longer provide us w/ equipment for said ACC.<br>
<blockquote type=cite class=cite cite="">
<dd>On Mar 9, 2017, at 8:47 AM, Drake
<<a href="mailto:drake.chamberlin@redwoodalliance.org">
drake.chamberlin@redwoodalliance.org</a>> wrote:<br><br>
<dd>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. <br><br>
<dd>At 04:21 PM 3/8/2017, William Miller wrote:<br><br>
<dd>What are the limitations of the new SMA inverters?<br><br>
<dd>Drake<br><br>
<br>
<blockquote type=cite class=cite cite="">
<dd>Wrenches:<br>
<dd>Â <br>
<dd>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.<br>
<dd>Â <br>
<dd>William<br>
<dd>Â <br>
<dd>Â <br>
<dd><28a7dc11.jpg> <br>
<dd>Lic 773985<br>
<dd><a href="http://www.millersolar.com/">millersolar.com</a><br>
<dd><a href="tel:(805)%20438-5600">805-438-5600</a><br>
<dd>Â <br>
<dd>From:</b> RE-wrenches [
<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org">
mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] On Behalf Of
</b>Tump<br>
<dd>Sent:</b> Wednesday, March 08, 2017 1:13 PM<br>
<dd>To:</b>
<a href="mailto:findsolar@herzfeld.org">findsolar@herzfeld.org</a>;
RE-wrenches<br>
<dd>Subject:</b> Re: [RE-wrenches] Aquion Batteries<br>
<dd>Â <br>
<dd>I have dual Sunny Islands & dual SB 4000TL22US Â w/ 20 stack on
one and another site w/ the Aspen 48M</b> 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
 charging w/slower solar source. The Aspen48M is ~ 42X28X42†@563 AH
of capacity, UnigyII 2000 Ah ~ 42x40x6̢۪ 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 Â
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 to reconfigure as 2 separate units, load the firm
ware and then reconfigure for 2 phase. <br>
<dd>I have spoken to the manufacture re/ lack of capacity and was told
that must be my loads…. NOT. <br>
<dd>>I would suggest that despite their hype these are quite expensive
and require quite a bit more of labor IF you are wiring the un sensed
stacks. And there is definitely a learning curve if you are using the
SI.<br>
<dd>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, stack vertically , the
interlocking stacks is perfect for earthquake locations. AND areÂ
totally recyclable.<br>
<dd>Pictures  of the SMA install & insights of battery
installation available, contact me off line. TUMP <br>
<dd>Â Â </b>
<dl>
<dd>On Mar 8, 2017, at 12:55 PM, Martin Herzfeld
<<a href="mailto:findsolar@herzfeld.org">findsolar@herzfeld.org</a>
> wrote:
<dd>Â
<dd>Has anyone worked with them with a Sunny Island? Space is
not an issue for this client.
<dd>Martin Herzfeld, IREC Certified Master Trainer ™ for PV Innstallation
Professional #IREC 10037
<dd>California Solaar Contractor License #00833782 C46,
D56, D31, C-7
<dd>Solar, Trenching, Pole Installation & Maintenance,
Instrumentation
<dd>UL Certified PV Installer #17, OSHA 30
<dd>OSHA-Authorized Construction Trainer #C0068034
<dd>CompTIA Certified Technical Classroom Trainer (CTT+)
#T3NSZCNBBKB4QTQG
<dd>Registered NABCEP Continuing Education (CE) Provider
<dd>  Â
<dd>Â
<dd>On Jul 20, 2016 2:00 PM, "Jerry Shafer"
<<a href="mailto:jerrysgarage01@gmail.com">jerrysgarage01@gmail.com</a>
> wrote:
<dd>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.
<dd>Â
<dd>On Jul 20, 2016 10:52 AM, "Drake"
<<a href="mailto:drake.chamberlin@redwoodalliance.org">
drake.chamberlin@redwoodalliance.org</a>> wrote:
<dl>
<dd>Hello Wrenches,
<dd>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?
<dd>Thanks,
<dd>Drake
<dd>Drake Chamberlin
<dd>Athens Electric LLC
<dd>OH License 44810
<dd>CO License 3773
<dd>NABCEP Certified Solar PV
<dd><a href="tel:740-448-7328">740-448-7328</a>
<dd><a href="http://athens-electric.com/">http://athens-electric.com/</a>
<dd>Â
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