[RE-wrenches] AC-coupling Enphase/XW Causes Flickering of Lights

[boB at midnitesolar.com]

If the inverter were in search, I would think that there would be no AC 
power produced by
the micro inverters at all because of anti-islanding.

boB


On 9/21/2015 4:40 PM, Jay wrote:
> Nope wasn't in search when I had flicker.
> If the loads were greater than the enphase production then no flicker.
>
> If it was "charging" then there was flicker.
>
> My vfx 3524 is 8+ years old, but I don't think that would be a factor.
>
> Jay.
>
>
>
> Sent from my iPhone
>
> On Sep 21, 2015, at 12:46 PM, jerrysgarage01 <jerrysgarage01 at gmail.com 
> <mailto:jerrysgarage01 at gmail.com>> wrote:
>
>> Wrenches
>> Check and confirm that the OB is not set in search, yhis will cause 
>> issues like this.
>> Jerry
>>
>>
>>
>> Sent from my Verizon Wireless 4G LTE smartphone
>>
>>
>> -------- Original message --------
>> From: jay <jay.peltz at gmail.com <mailto:jay.peltz at gmail.com>>
>> Date: 09/21/2015 6:58 AM (GMT-10:00)
>> To: RE-wrenches <re-wrenches at lists.re-wrenches.org 
>> <mailto:re-wrenches at lists.re-wrenches.org>>
>> Subject: [RE-wrenches] AC-coupling Enphase/XW Causes Flickering of 
>> Lights
>>
>> Hi Matt,
>>
>> I can’t tell you the reason but I had the same problem on my Outback VFX.
>> I didn’t put it on a O scope, but sure looked like a 60 cycle flicker 
>> to me.
>>
>> On my system of 2 enphase, when the loads exceeded the output of the 
>> enphase the flicker when away.
>> But only 2 isn’t very real world.
>>
>> In the end it was just a test for me, and it didn’t work.
>>
>> jay
>>
>> peltz power
>>> On Sep 21, 2015, at 6:18 AM, Matt Sherald <matt at getpimby.com 
>>> <mailto:matt at getpimby.com>> wrote:
>>>
>>> I wired an Enphase string into my critical loads panel at my shop.  
>>> I was curious to see how it would work as I have customers with 
>>> Enphase systems that occasionally contact me about adding a battery 
>>> backup system.
>>>
>>> Why do the fluorescent lights and LEDs flicker once the grid power 
>>> is dropped.  The flicker seems to start as soon as there is enough 
>>> sun to power up a few of the micros (they don't even have to be 
>>> making much power).
>>>
>>> The shop is grid-tied with a XW 4024 for battery backup.  Battery 
>>> capacity is 370Ah.
>>>
>>> I'd love an explanation as to why this happens and if there is a way 
>>> to mitigate the flicker I would also love to hear it.
>>>
>>> Many thanks!
>>>
>>> -- 
>>> Matt Sherald
>>> PIMBY Energy, LLC
>>> NABCEP Certified Solar PV Installer®
>>> 304-704-5943
>>>
>>> www.getpimby.blogspot.com <http://www.getpimby.blogspot.com/>
>>> www.getpimby.com <http://www.getpimby.com/>
>>>
>>>
>>> _
>>>
>>

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