[RE-wrenches] Cell Cracks

[Ray]

I believe these were a roof mount.  I forwarded everyone's comments to 
the other wrench not on the list.

Thanks,

Ray Walters
Remote Solar
303 505-8760

On 8/14/18 11:50 AM, bob at midnitesolar.com wrote:
>
>
> My cohort here that used to make PV modules thinks that something may 
> have hit the back of the
>
> module ?  Maybe somebody weed-eating around the array and something 
> hit it ?
>
> We notice the cracks in Ray's cells are white. Are the backs of these 
> modules white too ?
>
> Interesting if they still work but if just a couple of cells out of 60 
> or 70 are bad then it might
>
> not be noticeable, electrically ?
>
> boB
>
>
> On 8/14/2018 7:31 AM, Dave Tedeyan wrote:
>> Ray,
>> I have seen this many times while servicing systems. I have not 
>> noticed it cause any issues,
>> at least for modules that are 3-8 years old. On one site, I too did 
>> an IR scan and even curve
>> traced modules showing this, and there was no difference compared to 
>> other nearby modules
>> that did not show this cracking. The attached photo is what I have 
>> seen a lot of. It is very similar
>> although not exactly the same as the pattern your photos show. (you 
>> may need to zoom in to
>> see it).
>>
>> Cheers,
>> Dave
>>
>>
>> *Dave Tedeyan*
>> Senior Engineer | Taitem Engineering, PC
>>
>> 10 Verizon Lane | Lansing, NY 14882
>> o. _607.930.3481_ x6  f. 607.277.2119
>> www.taitem.com <http://www.taitem.com>
>>
>> Solar •Sustainability • Energy • Design
>> B-Corporation Best for the World 2018 Honoree
>>
>> On Tue, Aug 14, 2018 at 10:23 AM, Ray <ray at solarray.com 
>> <mailto:ray at solarray.com>> wrote:
>>
>>     Hi All;
>>
>>     I've had a colleague ask that I post a couple pictures of what
>>     appears to be cracks in cells under the glass.  The glass is not
>>     damaged.  These are Sun Edison modules, so apparently no
>>     warranty.  Has anyone seen this, and are these possibly dangerous
>>     (hot spots) or is this nothing to worry about?  An Infrared
>>     camera did not show any issues.
>>
>>     As always your invaluable input is always appreciated.
>>
>>     Thanks,
>>
>>     -- 
>>     Ray Walters
>>     Remote Solar
>>     303 505-8760
>>
>>
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