Subject: Re: [RE-wrenches] Microfractures
Jerry - Thanks for the input! No snail trails or burn marks at his point as
the system has yet to be commissioned. There will be an aerial IR inspection
once we're operating and if anything shows up it'll be addressed for sure, but
my unders
Jerry - Thanks for the input! No snail trails or burn marks at his point
as the system has yet to be commissioned. There will be an aerial IR
inspection once we're operating and if anything shows up it'll be addressed
for sure, but my understanding of microfractures is that the effects often
don'
Andrew, Wrenches
While in Hawaii, l had modules that had fractures, some showed up in low
performance, some did not and l don't recall there being a wobble on the
high side. I would suggest inspecting what the modules look in question.
Most of the time the cracks are visable and may look like worm
Wrenches - Does anyone have experience getting electroluminescence (EL)
test results from module manufacturers? I just shot some module IV curves
as part of an acceptance test and they all show some irregularities on the
vertical slope that Solmetric says are indicative of microfractures:
[image:
Manhattan, KS
-Original Message-
From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On
Behalf Of Christopher Warfel
Sent: Saturday, October 04, 2014 10:21 AM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Microfractures in PV Modules
Recently a inspector
Hi Chris,
There are a number of test methods, but the best two are.
Electroluminescence imagining ELI
thermal imaging IR
>From what I read at Photon, the ELI is the best for micro cracks before they
>really happen.
After they are visible, thermal imaging can be helpful.
As to it being a real
Christopher
There are some level of micro fractures that are always present in cells
and not visible to the naked eye. Some of these will produce visible
fractures over time from loading and flexing of the module from weather and
temperature changes. The micro fractures can be an issue with perf
No, this is a third party quality assurance inspector for a rate payer
funded program. The issue is most likely proper use of ratepayer funds
towards these projects. I would think that the AHJ wouldn't be
concerned unless there was a safety issue My question is more along the
lines of: is this
Hi Chris,
Do you mean the AHJ?
jay
On Oct 4, 2014, at 8:20 AM, Christopher Warfel wrote:
> Recently a inspector raised the issue of microfractures in pv modules, and
> that the existence of such fractures would require replacement of the modules
> and a failing of the system inspection. I fo
Recently a inspector raised the issue of microfractures in pv modules,
and that the existence of such fractures would require replacement of
the modules and a failing of the system inspection. I found information
from NREL confirming the existence of microfractures in poly
crystalline. However
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