PVTIME – Recently, DMEGC Solar’s Infinity Series hail-resistant modules successfully passed CGC’s 65mm extreme hail impact test, demonstrating leading R&D and manufacturing capabilities in withstanding harsh weather conditions. DMEGC has become the first module manufacturer in the photovoltaic industry to pass this enhanced hail test by CGC.
With the increasing frequency of extreme weather events and the potential risks brought by cost reduction efforts and thinner glass in modules, there is growing demand worldwide, especially in Europe, the U.S., and China, for modules with stronger hail resistance. Anticipating and thoroughly understanding customer needs, DMEGC Solar identified the common pain point of insufficient hail resistance in the industry. Through continuous technological innovation and R&D investment, DMEGC launched the Infinity Series high-resilience hail-resistant modules, aiming to provide more reliable and durable photovoltaic solutions for users.
The hail test simulates the impact and strike effects of hail on photovoltaic modules under natural conditions. During the test, the appearance and structure of the modules are monitored for damage. After the test, the modules are inspected for cracks, breakage, or damage to the cells, followed by a comparison of power parameters and electroluminescence (EL) images.
Under IEC standards, conventional hail tests use hailstones with a diameter of 25mm, weighing 7.53g, and impacting at a speed of approximately 23m/s. This often fails to simulate the extreme conditions modules may encounter in real-world environments. The hail load test on DMEGC’s N-type modules was based on the IEC 61215 series standards and requirements, but employed gigantic hailstones with a remarkable diameter of 65mm—equivalent to the size of a tennis ball—each weighing 130g, or 17 times the weight of standard 25mm hailstones. These hailstones impacted the module surface at a speed of 37m/s (equivalent to 133.2km/h), with kinetic energy 45 times that of the 25mm hailstones.
The test results showed that the Infinity Series modules remained intact after the test, with no visible damage. The EL test revealed no micro-cracks, defects, or moisture leakage, and the power attenuation was only about 0.53%, significantly lower than the IEC standard’s requirement of 5%, showcasing exceptional impact resistance.
The success of the Infinity Series high-efficiency N-type modules in this test is yet another testament to DMEGC Solar’s relentless pursuit of high-reliability products. Previously, the Infinity Series had passed the IEC 63209 extended stress test and the SUPSI VKF H4W hail test, received a five-star Very Good rating from PV Magazine Test, and helped DMEGC secure a spot among Kiwa PVEL’s Top Performer module suppliers.
China General Certification Center, (referred to as “CGC”) is an authoritative third-party technical service organization in China, specializing in standard development, testing, inspection, certification, technical and industry research services. With the mission of “providing solutions for industry progress and promoting sustainable development of the society”, CGC’s business scope covers renewable energy, climate change and sustainable development, industrial equipment and intelligent manufacturing, rail transit, consumer goods, intelligent technology and information security and other fields, providing services for all customers in the industry chain.
