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

[Kent Osterberg]

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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