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<DIV>Sorry. I have to re-post this as my local, small-town email provider's
server crashed the day I sent this out. I couldn't receive any responses.</DIV>
<DIV> </DIV>
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<DIV>Hi Wrenches,<BR><BR>I inherited an off-grid PV system that seems to be
significantly under producing. I have:<BR><BR>12 KC120's (~19V 7A each) paired
up 2 in series, for 6 strings terminated on new 15A breakers in a new Midnite
combiner,<BR>Output of combiner passes through a 60A breaker into a RV
SolarBoost 50 charge controller. An SW4024 ties in the CC, a Kohler 8.5 Gen set,
and a Yuasa 24V battery bank.<BR><BR>My problem is that I never see more than
about 5A (displayed at charge controller) coming off the array, even in full
sun, regardless of the state of charge of the batteries. I figure I should see,
at least once in a while, closer to between 20-30A. Batteries are, admittedly,
passed their life expectancy as the system was installed in '02 and I am sure
this is part of the problem. I'm thinking that if the batteries are at about 1/2
capacity (don't own a hydrometer...yet), the controller senses the batteries are
near full SOC even at lower voltage (~24V) and is therefore attempting to
trickle charge even in the bulk stage. Though this is not how the CC is supposed
to function in bulk, obviously, I'm assuming the old batteries are altering the
standard operating conditions of the system. I've adjusted the Bulk set point on
the CC but that doesn't seem to make a difference.<BR><BR>I doubt this is part
of the problem but the generator is problematic as well (it has it's own array
of maladies).</DIV>
<DIV><BR>Any insight is greatly appreciated. Thanks!</DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Eric Stikes<BR>Owner<BR>SunHarvest Solar<BR>+1
(530) 798 - 3738<BR><A
href="http://www.harvesthesun.com">www.harvesthesun.com</A></FONT></DIV></BODY></HTML>