[RE-wrenches] Enphase "AC Frequency Out Of Range"

[Carl Adams]

Passing this info along

One of our Enphase customers reported that his local electric utility
installed a new metering system, TWACs by Aclara.   Once they installed a
new meter on the service, the system began registering ACFOOR (AC Frequency
Out Of Range) messages.    He contacted Enphase and they informed him that
this issue has occurred previously on other installations where the utility
has a TWACs metering system (Please reference case number 260517).
Enphase applied a firmware upgrade to the site and that has resolved the
issue.

With Regards
Carl Adams
SunRock Solar



On Mon, Apr 15, 2013 at 4:12 PM, Dave Palumbo
<dave at independentpowerllc.com>wrote:

> I’d like to revisit a thread from early February where we were discussing
> Enphase microinverters going off line due to utility power quality issues
> when “Pinging” of smart meters occur.****
>
> ** **
>
> I have a system where I was told by Enphase that they applied their
> software fix in late March, but in this case it did work in fixing the
> problem of the inverters dropping for anywhere from 5 minutes to an hour a
> couple of times per day. The drops are not regular and now it appears that
> they are not connected to the pinging of the meters on my customers site as
> we had the utility change their schedule to only ping at midnight.****
>
> ** **
>
> We are still seeing AC Frequency Out of Range errors almost daily on our
> M-215 inverters. Sometimes it is for only several inverters and other times
> up to the whole array of 32 inverters. On my other Enphase systems have no
> problems.****
>
> ** **
>
> What other issues besides utility pinging of my customers smart meter
> could be causing the problem?****
>
> ** **
>
> Could the pinging of the neighbors meters by the utility off of the same
> transformer be affecting the Enphase M-215’s? I’m suspicious of something
> other than this because the errors occur at random times that appear
> unrelated to utility pinging.****
>
> ** **
>
> Thanks,****
>
> Dave****
>
> ** **
>
> David Palumbo****
>
> Independent Power LLC ****
>
> 462 Solar Way Drive****
>
> Hyde Park, VT 05655**
>
> *www.independentpowerllc.com *
>
> Vermont Solar Partner****
>
> 25 Years Experience, (802) 888-7194 ****
>
> ** **
>
> _______________________________________________
> List sponsored by Home Power magazine
>
> List Address: RE-wrenches at lists.re-wrenches.org
>
> Change email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> List-Archive:
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> www.re-wrenches.org/etiquette.htm
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130513/5f119fab/attachment-0004.html>