[RE-wrenches] Cell Cracks

[bob at midnitesolar.com]

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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