Hail Test a mechanical test of a solar panel that can withstand the impact of ice balls at temp ~4°C
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Shared July 4, 2026
Industry Standard Tests:-
•IEC 61215: This is the baseline international certification standard. It requires panels to withstand 25 mm (1-inch) ice balls fired at approximately 80 km/h (50 mph).
•Hail Stress Sequence (HSS): Administered by laboratories like Kiwa PVEL, this test goes beyond the baseline. It uses ice balls ranging from 35 mm to 55 mm to identify potential micro-cracking and glass breakage points.
•Hail Resiliency Curve (HRC) Test: Introduced by VDE Americas and RETC, this protocol tests panels to failure by firing incrementally larger hailstones at higher speeds to establish a panel's exact breaking point.
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