Kent
I can assume there is no backsheet external damage, These look cell
fractures, more common on poly, they may be cause of manufacturing or a
result of overheating traces or both. Run an IR Curve test and see if this
is resulting in decreased output. Sharp had a similar issue when they
stepped
It took some time digging into internet images but I found a YouTube
video of the same type of defect.
https://www.youtube.com/watch?v=U3a9AW24T_o
I can see that microcracks are the likely cause. The prevalence of 45
degree angles seems weird though. Monocrystalline cells should have a
random
These days modules are so cheap, and so much more efficient, that I just
reuse the racks, even if the existing modules are good. Racking, wiring,
excavation all exceed the cost of the mods, so its what ever gets the
customer the power they need for the lowest cost.
OTOH, if the system is
The cells are cracking. The metal traces are victim (not the cause) along
the crack lines--
David Quattro
CA License # 954020. C-10, C-46
ph (415) 312-2661
www.quattrosolar.com
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I think these modules are about 12 years old. I didn't have a voltmeter
or ammeter with me this morning when this was discovered so I wasn't
able to check the output.
Kent Osterberg
Blue Mountain Solar
On 7/16/2023 3:06 PM, Dave Angelini Offgrid Solar via RE-wrenches wrote:
Hi Kent, How is
Hi Kent, How is output and how old are the panels?
Dave Angelini Offgrid Solar
"we go where powerlines don't"
http://members.sti.net/offgridsolar/
e-mail offgridso...@sti.net
text 209 813 0060
On 2023-07-16 2:58 pm, Kent via RE-wrenches wrote:
Found some damage to a customer's Grape
Found some damage to a customer's Grape CS-S-180-DJ PV modules this
morning. Unlike anything I've ever seen; so I'm hoping that someone on
this list can tell me the cause. I've put several photos of the cells
online
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