<html><body style="font-family: Helvetica,Arial,sans-serif; font-size: 12px;">Hi Jay,<br><br>I suspect that you are on something. The grid in that area has a lot of hick ups. The grid could have gone down momentarily while the batteries were selling and the CC was cranking. That would have the same effect as turning off a large load. <br><br>Thanks,<br><br>Drake <br><br><br><blockquote class="atmailquote"><br>----- Original Message -----<br><div id="origionalMessageFromField" style="width:100%;display:inline;background:rgb(228,228,228);"><div style="display:inline;font-weight:bold;">From:</div> "RE-wrenches" <re-wrenches@lists.re-wrenches.org></div><br><div id="origionalMessageToField" style="display:inline;font-weight:bold;">To:</div>"RE-wrenches" <re-wrenches@lists.re-wrenches.org><br><div id="origionalMessageSentField" style="display:inline;font-weight:bold;">Cc:</div><br><div style="display:inline;font-weight:bold;">Sent:</div>Mon, 17 Jul 2017 18:03:49 -0700<br><div id="origionalMessageSubjectField" style="display:inline;font-weight:bold;">Subject:</div>Re: [RE-wrenches] Over voltage error message<br><br><br>
HI Drake,<div><br></div><div>We need some more info to be able to piece this together.</div><div><br></div><div>The way I’ve seen this happen with off grid is the batteries are pretty full, in absorb mode often with aging batteries, and a good sized load is turned off. The CC has been putting in extra watts to keep the batteries at its absorb voltage, the load is suddenly off, and it can’t react fast enough causing a short voltage spike ( I call it a bounce). </div><div><br></div><div>If the batteries are pretty low SOC, this won’t happen.</div><div>If the ratio of PV to battery is too low, again hard to make it happen.</div><div>But if the ratio of PV to battery is pretty high as in most grid systems its more common.</div><div>I can’t see how it would happen if the system was selling, don’t know what mechanism would create the spike.</div><div><br></div><div>Depending on when in the day and how the system is set up, it next to impossible to have this spike in sell mode. So I’d guess it was during morning battery fill up before sell mode and the client has a backed up loads panel connected to it?</div><div><br></div><div><br></div><div>jay</div><div><br></div><div>peltz power</div><div><br></div><div><br></div><div><div><blockquote><div>On Jul 17, 2017, at 8:19 AM, Drake <<a href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a>> wrote:</div><br class="Apple-interchange-newline"><div>
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Hi Dan and Dave,<br><br>
The system did not crash. <br><br>
I think it must be a combination of the Midnite and Radian. The Radian
should sell to keep the voltage down and the Midnite should regulate. It
seems a bit mysterious to me. <br><br>
Thanks,<br><br>
Drake <br><br><br>
At 09:49 AM 7/17/2017, you wrote:<br><blockquote class="cite" cite="">I seem to recall older FX series
spitting out this error following a short on the AC side. Did the system
crash?<br><br>
db<br><br><br>
Dan Brown<br>
Foxfire Energy Corp.<br>
Renewable Energy Systems<br>
(802)-483-2564<br><a href="http://www.foxfire-energy.com/">www.Foxfire-Energy.com</a><br>
NABCEP #092907-44<br><br><br></blockquote></div><br></div></blockquote></div><br></div>
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