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<p>The Classic can overshoot but not very much, normally.</p>
<p>I would try this...</p>
<p>Sell to grid while watching the battery voltage and then turn the
inverter breaker off</p>
<p>and see what the battery voltage does. If the battery voltage
rises to the mid 60V range</p>
<p>from a low sell voltage of around 52 or 53V, then something is
really amiss.</p>
<p>If the system has been in service for some time, you might also
check the capacity of</p>
<p>the batteries. They should not easily allow 65-ish volts. I
don't think that the</p>
<p>FM's communication can respond to keep spikes from happening any
better</p>
<p>than it could without communications. Data packets just don't
come all that</p>
<p>often.<br>
</p>
<p>boB<br>
</p>
<br>
<div class="moz-cite-prefix">On 7/18/2017 5:25 PM, Jerry Shafer
wrote:<br>
</div>
<blockquote
cite="mid:CAMUFgmW7FrSfXX5tSvuwqr6nzXQ=BsTtiNjGyP8szqN56zivYQ@mail.gmail.com"
type="cite">
<div dir="ltr">Wrenches
<div>The Outback system with grid connection would be programmed
for grid connection all the way from the inverter to the
Outback FM CC, using a midnite CC this option may not be
possible resulting to a CC push if the grid disconnects
resulting in a spike. the disconnect might be from settings to
tight or as it was said utility spikes. You might thing that
the battery bank should take it up but internal resistance in
the battery or to it may prevent it. The other thing I would
look at is connections, if there is any resistance in a
connection this could happen. </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Jul 17, 2017 at 2:36 AM, Drake
<span dir="ltr"><<a moz-do-not-send="true"
href="mailto:drake.chamberlin@redwoodalliance.org"
target="_blank">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">Hello
Wrenches,<br>
<br>
My client reported seeing an overvoltage error message on
her Mate 3 on a Radian system. The Radian is selling to the
grid and is being fed by a Midnite Classic 200. It has shown
two spikes so far, the last one going to 67 volts and
lasting 1 second. The batteries are Concorde AGM, 305 AH.<br>
<br>
Does this momentary spike seem like a problem or a warning
of problems to come?<br>
<br>
Thanks,<br>
<br>
Drake<br>
<br>
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