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STANDARD CONDITIONS FOR PERFORMANCE TESTING OF PHOTOVOLTAIC SOLAR PANELS BEFORE USE

   Crystalline silicon solar panels and polycrystalline silicon solar panels are both photovoltaic solar panels, both of which will be different in appearance and utility, but in general, they are all tested on the performance of the panels.
   Specifically, the solar panel must first use the solar spectrum AMI.5. The sunlight on the ground comes partly from direct sunlight and partly from scattering from the atmosphere or the surrounding environment. The former is called direct radiation, and the latter is called sky radiation. The combination of the two is called total radiation. Radiation is more than 75% of the total ancient radiation. The radiation of sunlight belongs to electromagnetic waves with different wavelengths. Solar panels have different responses to light of different wavelengths, and light with the same irradiance and different spectral components irradiates the same panel, and the effects are different. Sunlight is a composite light of various wavelengths. The spectral components it contains form a spectral distribution curve, and its spectral distribution varies with location, time, and other conditions. The situation outside the atmosphere is very simple, and the solar spectrum level is equivalent to 6000K. The black body radiation spectrum is called the AMO spectrum. The international standard stipulates that under clear weather conditions when the distance the sun travels through the atmosphere to the ground is 1.5 times the thickness of the atmosphere, the spectrum is the standard ground solar spectrum or AMI.5 for short, and the solar zenith angle is 48.19°. The standard conditions for the performance test of solar panels are also required: the total irradiance of the ground sunlight is 100WM: the standard test temperature is 25%C, the allowable difference for the calibration test is + 1C, and the allowable difference for the non-standard test is for +2'C.

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