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I might take a clamp on ammeter and check the Classic's battery
side current.<br>
Then maybe turn ON the generator and see what happens to the
current<br>
on that line.<br>
<br>
boB<br>
<br>
<br>
<br>
On 11/6/2015 1:49 PM, Daniel Tittmann wrote:<br>
</div>
<blockquote
cite="mid:CAKfSoE_NL9uB+yXudj39idKKPNq-4HCBjs=+186BuSqRhhAptQ@mail.gmail.com"
type="cite">
<div dir="ltr">there is a MNSPD 300 AC and a MNSPD 300 DC. are
wired into the system.
<div><br>
</div>
<div>
<div>this is a new system. Has been happening since
commissioning. <br>
</div>
it is possible that the generator is charging during those
morning hours as there are likely morning loads, coffee
pot, but not always as the customer just went on vacation and
the breaker tripped while he was gone.<br>
</div>
<div><br>
</div>
<div>On my first return visit I re routed the controller battery
+ from the battery + buss bar to the battery + on the battery
bank itself as this had solved an similar issue in the past. </div>
<div><br>
</div>
<div>So for tomorrow's visit I am planning on taking a new
breaker and a new controller. Is there anything else that I
should replace? </div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature">
<div dir="ltr">Daniel Tittmann
<div>CTO</div>
<div>Greenwired</div>
<div><a moz-do-not-send="true"
href="http://www.greenwired.com" target="_blank">www.greenwired.com</a></div>
<div><a moz-do-not-send="true"
href="mailto:daniel@greenwired.com" target="_blank">daniel@greenwired.com</a></div>
<div>707-923-2001 (office)</div>
<div>707-206-5088 (Cell)</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">On Thu, Oct 29, 2015 at 4:19 PM, <a
moz-do-not-send="true" href="mailto:boB@midnitesolar.com"><a class="moz-txt-link-abbreviated" href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</a></a>
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:boB@midnitesolar.com" target="_blank">boB@midnitesolar.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div><br>
Larry, because these MPPT CC's are bi-directional (for
efficiencies' sake), they can convert a large current<br>
at the battery side to a smaller current at the PV side
if not adjusted right. Normally this is just taken<br>
care of and reduced to a bare minimum by the controller
watching the voltages and currents carefully.<br>
It is technically possible though for things to not work
exactly correctly. I am not saying that this is<br>
for sure happening, but it is possible. The ramping up
in battery voltage from the chargers should<br>
be plenty slow enough for this not to be a problem but I
am wildly speculating that this could happen<br>
and cannot rule it out. There may of course be
something else completely different happening here<br>
though.<br>
<br>
If CBI breakers are being used, these are known to be
extremely fast at tripping when overloaded.<br>
<br>
Also, what, if any SPDs are connected to the system ?<br>
<br>
boB<span class=""><br>
<br>
<br>
On 10/29/2015 2:45 PM, Starlight Solar Power Systems
wrote:<br>
</span></div>
<span class="">
<blockquote type="cite"> After the Magnum
Inverter/charger samples incoming AC power, they have
a slight delay before starting the charger. Then, they
ramp up current slowly.
<div>
<div><br>
</div>
<div>Even so, how will any current from any other
source pass through the breaker unless the Classic
is presenting a load? I suppose something else
could be wired through the breaker but I’m
guessing Daniel would have looked at that.<br>
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</blockquote>
<br>
</span> <<<Curious Larry's PICTURE GOES
HERE>>><span class=""><br>
<br>
<blockquote type="cite">
<div>
<div>
<div> </div>
<div>Curious Larry</div>
</div>
<div><br>
</div>
<div><br>
<div>
<div>On Oct 29, 2015, at 1:06 PM, <a
moz-do-not-send="true"
href="mailto:boB@midnitesolar.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:boB@midnitesolar.com">boB@midnitesolar.com</a></a>
wrote:</div>
<br>
<div>
<div bgcolor="#FFFFFF" text="#000000">
<div><br>
...if it turns out to be, say, a surge in
battery voltage from the generator<br>
starting up and causing a reverse current
through the battery terminals…<br>
<br>
</div>
<div> boB<br>
<br>
<br>
<br>
</div>
</div>
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</blockquote>
<br>
</span></div>
<br>
____<br>
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