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

[penobscotsolar at midmaine.com]

Dave,
  In multiple conversations about this with both the utility and Enphase
there was concern about high inductive loads, possibly from the paper
mill in the town, that turned out not to be the case. The fix Enphase
developed worked, but I thought it would be worth mentioning.

Daryl


> Dave,
>
> The problem occurs when the kWh meter sends data. I would expect any
> neighbors' meters on the same transformer to cause trouble. And probably
> neighbors that are not on the same transformer too.
>
> Kent Osterberg
> Blue Mountain Solar, Inc.
> www.bluemountainsolar.com
> t: 541-568-4882
>
> On 4/15/2013 1:12 PM, Dave Palumbo 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
>>
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