Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread Luke Christy 
Ray,
I just saw the same sort of thing on 2-year-old Peimar modules. In my case, 
there were visible hot spots that had burned through the backsheet in several 
places on several modules. In some places it was just small blisters, in others 
there was a clearly melted area of the backsheet. The hot spots seemed clearly 
associated with the cells that had cracks, but they were always at the edges 
and corners of cells. Unfortunately I did not have access to an IR camera to 
view them under load in the sun. 

The manufacturer replaced them under warranty, but I’m not pleased with these 
modules at all.


-Luke Christy

NABCEP Certified PV Installation Professional™: 



Solar Gain Services, LLC
PO Box 531
Monte Vista, CO. 81144
sgsrenewab...@gmail.com 
719.588.3044
www.sgsrenewables.com 
> 
> 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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Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread Jay 
I had a module engineer tell me these are often a static discharge issue which 
happens during the lamination process. 
It’s not effecting the cell surface but the encapsulate above it. 
It’s not cracking but it looks like it. 

Jay 

Peltz power. 



> On Aug 14, 2018, at 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
> 
> Solar • Sustainability • Energy • Design
> B-Corporation Best for the World 2018 Honoree
> 
>> On Tue, Aug 14, 2018 at 10:23 AM, Ray  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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Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread b...@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 

Solar •Sustainability • Energy • Design
B-Corporation Best for the World 2018 Honoree

On Tue, Aug 14, 2018 at 10:23 AM, Ray > 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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Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread 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, b...@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 

Solar •Sustainability • Energy • Design
B-Corporation Best for the World 2018 Honoree

On Tue, Aug 14, 2018 at 10:23 AM, Ray > 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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Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread Ray 
I haven't seen the actual modules, and I am not that familiar with 
microfractures or snail trails either.


Ray Walters
Remote Solar
303 505-8760

On 8/14/18 7:42 PM, glenn.b...@glbcc.com wrote:

Ray,

Do you feel that these are different from the microfractures or snail 
trails that were  reported widely across the industry a couple of 
years ago?


Glenn

Sent from my 'smart' phone so please excuse spelling and typos.

-- Original message--
*From: *Ray
*Date: *Tue, Aug 14, 2018 10:24 AM
*To: *RE-wrenches;
*Cc: *
*Subject:*[RE-wrenches] Cell Cracks

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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Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread glenn.b...@glbcc.com 
Ray,
Do you feel that these are different from the microfractures or snail trails 
that were  reported widely across the industry a couple of years ago?
Glenn
Sent from my 'smart' phone so please excuse spelling and typos.
-- Original message--From: RayDate: Tue, Aug 14, 2018 10:24 AMTo: 
RE-wrenches;Cc: Subject:[RE-wrenches] Cell Cracks
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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Re: [RE-wrenches] Cell Cracks

2018-08-14 Thread Andrew Truitt 
Spot-on Glenn.  Ray - check out this doc from REC
<http://aeesolar.com/wp-content/uploads/2017/01/2017DC-Microcracks-and-Solar-Modules.pdf>.
Its not uncommon for there to be no measurable effect from a microcrack at
first, but efficiency and safety can be significantly impacted after years
of thermal cycling.  Apparently the best way to detect them in the field is
electroluminescence testing.  Not particularly cost effective for one-off
resi, but for larger systems it could make sense to test a sample.  These
guys <http://www.acuitypower.com/>provide in-field EL testing services and
are rock stars.


*Regards, *

*Andrew Truitt | DRV <http://dr.ventures/>*
www.dr.ventures
d: 202.486.7507

NABCEP Certified PV Installation Professional ID: 032407-66
Colorado Journeyman Electrician License No.: 600132


On Tue, Aug 14, 2018 at 8:34 PM Ray  wrote:

> I haven't seen the actual modules, and I am not that familiar with
> microfractures or snail trails either.
>
> Ray Walters
> Remote Solar
> 303 505-8760
>
> On 8/14/18 7:42 PM, glenn.b...@glbcc.com wrote:
>
> Ray,
>
> Do you feel that these are different from the microfractures or snail
> trails that were  reported widely across the industry a couple of years ago?
>
> Glenn
>
> Sent from my 'smart' phone so please excuse spelling and typos.
>
> -- Original message--
> *From: *Ray
> *Date: *Tue, Aug 14, 2018 10:24 AM
> *To: *RE-wrenches;
> *Cc: *
> *Subject:*[RE-wrenches] Cell Cracks
>
> 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 Solar303 505-8760
>
>
> ___
> List sponsored by Redwood Alliance
>
> List Address: RE-wrenches@lists.re-wrenches.org 
> <%20re-wrenc...@lists.re-wrenches.org>
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Re: [RE-wrenches] Cell Cracks

2023-07-12 Thread Jason Szumlanski via RE-wrenches 
I was searching the forums for information on Peimar modules and this is
all that came up. Does anyone have any experience with recently produced
PERC modules from them? They are being offered through my distribution
network at an attractive price, but I am a bit skeptical.

Jason Szumlanski



On Tue, Aug 14, 2018, 12:38 PM Luke Christy  wrote:

> Ray,
> I just saw the same sort of thing on 2-year-old Peimar modules. In my
> case, there were visible hot spots that had burned through the backsheet in
> several places on several modules. In some places it was just small
> blisters, in others there was a clearly melted area of the backsheet. The
> hot spots seemed clearly associated with the cells that had cracks, but
> they were always at the edges and corners of cells. Unfortunately I did not
> have access to an IR camera to view them under load in the sun.
>
> The manufacturer replaced them under warranty, but I’m not pleased with
> these modules at all.
>
>
> -Luke Christy
>
> NABCEP Certified PV Installation Professional™:
>
>
>
> Solar Gain Services, LLC
> PO Box 531
> Monte Vista, CO. 81144
> sgsrenewab...@gmail.com 
> 719.588.3044
> www.sgsrenewables.com
>
>
> 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
>>
>>
>> ___
>> List sponsored by Redwood Alliance
>>
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Re: [RE-wrenches] Cell Cracks

2023-07-12 Thread Brian Mehalic via RE-wrenches 
I had the same experience as the older post you referenced with these mods on 2 MW system. Lots of burn marks and shattered glass, located at the edges of cells. And under thermal imaging there were clearly lots of issues, including ones that hadn’t (yet) manifested themselves to the naked eye. The mods were quite concave - a straight edge across the short side showed almost a half inch of concavity. I would have a very hard time using them again. Ok, let me rephrase - I would not. BrianOn Jul 12, 2023, at 6:14 AM, Jason Szumlanski via RE-wrenches  wrote:I was searching the forums for information on Peimar modules and this is all that came up. Does anyone have any experience with recently produced PERC modules from them? They are being offered through my distribution network at an attractive price, but I am a bit skeptical.Jason SzumlanskiOn Tue, Aug 14, 2018, 12:38 PM Luke Christy  wrote:Ray,I just saw the same sort of thing on 2-year-old Peimar modules. In my case, there were visible hot spots that had burned through the backsheet in several places on several modules. In some places it was just small blisters, in others there was a clearly melted area of the backsheet. The hot spots seemed clearly associated with the cells that had cracks, but they were always at the edges and corners of cells. Unfortunately I did not have access to an IR camera to view them under load in the sun. The manufacturer replaced them under warranty, but I’m not pleased with these modules at all.
-Luke ChristyNABCEP Certified PV Installation Professional™:     Solar Gain Services, LLCPO Box 531Monte Vista, CO. 81144sgsrenewab...@gmail.com719.588.3044www.sgsrenewables.com

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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