Recently, Trina Solar released a series of testing results on the mechanical 
reliability of the 670W Vertex module. Covering six tests, including static 
mechanical load test and five rigorous tests including non-uniform snow-load 
test, extreme low-temperature mechanical Load test, hail test, extreme DML test 
and extreme wind tunnel test, the serial testing results achieved an 
across-the-board verification of the excellent mechanical load reliability of 
the 670W Vertex modules.

Photovoltaic modules can be affected by multiple environmental factors in 
actual outdoor use, while extreme weather such as snowstorms and gale-force or 
higher winds necessitates a higher load performance. As a result, to protect 
the interests of the customers, module design needs to consider the ability to 
withstand extreme weather over the whole life cycle.

In May of this year, PV Evolution Labs (PVEL), one of the leading independent 
PV test laboratories, released its seventh annual global PV module test 
results, the 2021 PV Module Reliability Scorecard Report. Trina Solar again 
placed as a Top Performer for outstanding product reliability and performance 
among global PV module manufacturers. Dr. Zhang Yingbin, Head of Product 
Strategy and Marketing at Trina Solar said that completing the general 
reliability verification covered all the basics, while the advanced testing in 
this go-around was to verify that ultra-high-power modules can maintain their 
outstanding performance even when subject to extreme weather, creating one of 
the industry's most reliable modules.

Among the lineup of rigid tests, the non-uniform snow-load test simulated 
uneven pressures caused by a large accumulation of heavy snow on the Trina 
Solar's 670W module surface, with the highest pressure applied to the bottom 
end of the module of up to 7000Pa (equivalent to a depth of 2.8 meters of 
snow), with the results showing that the power attenuation of the module is 
only 0.56%. 

The extreme low-temperature mechanical Load test, a static load testing of 
positive 5400Pa/ negative 2400Pa under an extremely low -40°C, showed no 
variation in electroluminescence (EL) and power attenuation of only 0.11%.

In the hail test that simulates the impact of hail of different sizes on 
modules, the 670W module eventually passed the test measuring the impact of 
hailstones 35 mm in diameter without causing any damage. 

In multiple extreme dynamic mechanical load test, 210 Vertex 670W module 
delivered better performance than competitors' modules with load capacity 
several times higher than the IEC standard. When installed by clamps, the 210 
mm Vertex 670W double-glass module has passed the 20,000 cycles, 20-fold 
extreme testing, still remaining intact. 

In extreme wind tunnel test, the 670W Vertex module remains intact when the 
wind speed reached 62m/s (216km/h or 134 mph), passing the extreme wind speed 
test equivalent to the low end of a Category 4 hurricane on the Saffir-Simpson 
scale.

Maintaining the consistent ultra-high reliability of Trina Solar modules, the 
210 Vertex series modules integrated a series of design optimizations, 
including added frame wall thickness, larger cavities, optimized material 
selection and matching designs, to ensure ultra-high structural robustness. 
Through the series of rigid tests, the series' excellent ability to withstand 
external mechanical stress that can calmly handle extreme wind, snowstorms, 
extreme cold, hail and other extreme weather was confirmed.

"As the component with the highest power output in mass production in the 
industry, the reason we chose 670W Vertex module as a testing object is not 
only to empower customers to intuitively understand the high reliability of 
670W+ modules, but also to share research results across the whole of the 
industry for continuous innovation, comprehensive application of 600W+ modules 
and supporting carbon neutral." said Dr. Zhang Yingbin.

More about Trina Solar:

https://www.trinasolar.com/en-glb/about_trina_solar

SOURCE  Trina Solar Co., Ltd