<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>My experience with Sunny Islands are that their SOC can be off by
quite a bit. Unfortunately with sealed batteries, you can't check
SG with a hydrometer to confirm, and tweak the settings. Probably
the best you could do, is shut the system down and let the
batteries sit for long enough to take voltage readings to double
check the SOC. <br>
</p>
<p>I found systems that the SI thought it was close to full, but the
batteries were actually only at 60%.<br>
</p>
<pre class="moz-signature" cols="72">R. Ray Walters
Chief Technical Officer, RemoteSolar.com
BS Mech Engineering, 1988
Former NABCEP Certified, 2004-2016
Licensed Master ELectrician, Colorado
303 505-8760</pre>
<div class="moz-cite-prefix">On 7/24/17 2:16 PM, August Goers wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAHp7QOdSNVOSQ=LKgAinG3173SFKGGdaASvnAydavjadWNDx3w@mail.gmail.com">
<div dir="ltr">Hi Drake,
<div><br>
</div>
<div>Good questions. Yes, the taper charge appears to be working
well. I've been to the site a couple of times where loads were
low, irradiance was high, and battery SOC was ~90% and the
Sunny Boy was just covering the load and a little trickle
charge. </div>
<div><br>
</div>
<div>I have noticed that the SOC seems to max out around 90 to
92% - that seems to be the case with Sunny Islands in general.
I'm not enough of a battery expert to know if this is a good
thing or not. I do know that I custom programmed in all the
AGM battery parameters and set max voltages. I also disabled
equalize mode since I couldn't find any literature from US
battery on recommendations for their AGM. </div>
<div><br>
</div>
<div>August</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr">
<p><b><span
style="font-size:9.0pt;font-family:"Century
Gothic","sans-serif"">August Goers</span></b></p>
<p><span style="font-size:8.0pt;font-family:"Century
Gothic","sans-serif"">Luminalt Energy
Corporation</span></p>
<p><span style="font-size:8.0pt;font-family:"Century
Gothic","sans-serif"">o: 415.641.4000</span></p>
<p><span style="font-size:8.0pt;font-family:"Century
Gothic","sans-serif"">m: 415.559.1525</span></p>
<p><span style="font-size:8.0pt;font-family:"Century
Gothic","sans-serif""><a
href="http://www.luminalt.com" target="_blank"
moz-do-not-send="true">www.luminalt.com</a></span></p>
<p> </p>
</div>
</div>
</div>
<br>
<div class="gmail_quote">On Mon, Jul 24, 2017 at 5:36 AM, Drake
<span dir="ltr"><<a
href="mailto:drake.chamberlin@redwoodalliance.org"
target="_blank" moz-do-not-send="true">drake.chamberlin@redwoodalliance.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Are you
getting a good taper charge with this system? Are the
batteries reaching a decent state of charge from the AC
coupled connection with the inverter?<br>
<br>
Thanks,<br>
<br>
Drake
<div class="HOEnZb">
<div class="h5"><br>
<br>
<br>
At 11:08 AM 7/23/2017, you wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
August,<br>
<br>
Of course the genny itself has its own
emission of noise but the environment its in certainly
will affect its overall "annoyance level". Backed up
to metal container is a negative, I can't tell from
the photo if the Kohler is on the side away from most
of the public, probably don't have to go on, you must
have thought of these things....it could have its own
(partial?)enclosure with some sound deadening
qualities. Hondas are a little quieter but not that
much, hopefully the darn thing doesn't have to come
on, eh?<br>
<br>
Nice set-up.<br>
<br>
Bill<br>
<br>
Feather River Solar Electric<br>
Bill Battagin, Owner<br>
4291 Nelson St.<br>
Taylorsville, CA 95983<br>
<a href="tel:530.284.7849" value="+15302847849"
target="_blank" moz-do-not-send="true">530.284.7849</a><br>
CA Lic 874049<br>
<a href="http://www.frenergy.net" rel="noreferrer"
target="_blank" moz-do-not-send="true">www.frenergy.net</a><br>
<br>
On 7/21/2017 11:39 AM, August Goers wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
All,<br>
<br>
I thought I'd provide an update on our setup since
we've completed the install and commissioning. More
or less, the installation went well. We did have one
of the US Battery AGM L16 batteries dead on arrival
with a bad cell. That bad battery screwed up the
state of charge (SOC) calculations in the Sunny
Island and made the SOC reading jump from ~ 80% to
19% in just a couple of minutes. It was easy to find
the bad battery - all the batteries were about 6.5 v
with the bad battery reading about 4.5 v. We pulled
that battery out of the string for warranty
replacement and are currently running it with seven
batteries at 42 v nominal. It's cool that the Sunny
Island allows for this. Other than that, the
frequency shift derate between the Sunny Island and
Sunny Boy is working perfectly and the system has
more than enough capacity to run the loads during
the summer months. I'd say the Kohler generator is
the nice unit although it is a little loud for this
application. If I had to do this portable
application again, I'd probably just go with the
Honda 7000.<br>
<br>
Thanks for your help! August<br>
</blockquote>
<br>
---<br>
This email has been checked for viruses by Avast
antivirus software.<br>
<a href="https://www.avast.com/antivirus"
rel="noreferrer" target="_blank"
moz-do-not-send="true">https://www.avast.com/antiviru<wbr>s</a><br>
<br>
<br>
______________________________<wbr>_________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a
href="mailto:RE-wrenches@lists.re-wrenches.org"
target="_blank" moz-do-not-send="true">RE-wrenches@lists.re-wrenches.<wbr>org</a><br>
<br>
Change listserver email address & settings:<br>
<a
href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org"
rel="noreferrer" target="_blank"
moz-do-not-send="true">http://lists.re-wrenches.org/o<wbr>ptions.cgi/re-wrenches-re-wren<wbr>ches.org</a><br>
<br>
List-Archive: <a
href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html"
rel="noreferrer" target="_blank"
moz-do-not-send="true">http://www.mail-archive.com/re<wbr>-wrenches@lists.re-wrenches.or<wbr>g/maillist.html</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm"
rel="noreferrer" target="_blank"
moz-do-not-send="true">www.re-wrenches.org/etiquette.<wbr>htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org"
rel="noreferrer" target="_blank"
moz-do-not-send="true">www.members.re-wrenches.org</a><br>
</blockquote>
<br>
______________________________<wbr>_________________<br>
List sponsored by Redwood Alliance<br>
<br>
List Address: <a
href="mailto:RE-wrenches@lists.re-wrenches.org"
target="_blank" moz-do-not-send="true">RE-wrenches@lists.re-wrenches.<wbr>org</a><br>
<br>
Change listserver email address & settings:<br>
<a
href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org"
rel="noreferrer" target="_blank"
moz-do-not-send="true">http://lists.re-wrenches.org/o<wbr>ptions.cgi/re-wrenches-re-wren<wbr>ches.org</a><br>
<br>
List-Archive: <a
href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html"
rel="noreferrer" target="_blank"
moz-do-not-send="true">http://www.mail-archive.com/re<wbr>-wrenches@lists.re-wrenches.or<wbr>g/maillist.html</a><br>
<br>
List rules & etiquette:<br>
<a href="http://www.re-wrenches.org/etiquette.htm"
rel="noreferrer" target="_blank"
moz-do-not-send="true">www.re-wrenches.org/etiquette.<wbr>htm</a><br>
<br>
Check out or update participant bios:<br>
<a href="http://www.members.re-wrenches.org"
rel="noreferrer" target="_blank"
moz-do-not-send="true">www.members.re-wrenches.org</a><br>
<br>
</div>
</div>
</blockquote>
</div>
<br>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
List sponsored by Redwood Alliance
List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>
Change listserver email address & settings:
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a>
List-Archive: <a class="moz-txt-link-freetext" href="http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html">http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html</a>
List rules & etiquette:
<a class="moz-txt-link-abbreviated" href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a>
Check out or update participant bios:
<a class="moz-txt-link-abbreviated" href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a>
</pre>
</blockquote>
<br>
</body>
</html>