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: image.png] It seems the optimal course of action here is to perform EL testing on a random sample of mods in the field and compare with images from the factory to hone in on the root cause. However field EL testing is not cheap and even if we do determine that the damage occured after modules left the factory, how could it be proven if its the shipper or the EPC at fault? I foresee everyone pushing back and invoking the performance warranty as the backstop if issues pop up in the future (assuming nothing shows up during performance testing next month), but the last thing we want deal with is a massive (or worse, piecemeal) warranty claim in 5 years. Or the array may mildly underperform year over year, not enough to trigger warranties but still costing thousands in lost revenue. The system is a 200kW ground mount in CO using tier 1 (top 5) Chinese modules. Anyone dealt with this type of situation before? *Regards, * *Andrew Truitt* www.dr.ventures d: 202.486.7507 NABCEP Certified PV Installation Professional ID: 032407-66 Colorado Journeyman Electrician License No.: 600132 [image: Logo] The content of this email is confidential and intended for the recipient specified in message only. It is strictly forbidden to share any part of this message with any third party, without a written consent of the sender. If you received this message by mistake, please reply to this message and follow with its deletion, so that we can ensure such a mistake does not occur in the future.
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