Purpose
PV Module UV Preconditioning Testing Chamber is dedicated to the testing of solar photovoltaic modules, used to evaluate the ability of materials such as polymer and protective layer to resist ultraviolet irradiation, can quickly and truly reproduce the damage of sunlight, rain, dew to materials, contribute to the screening and optimization of materials and formulas.
Test Standard
Test standard: IEC 61215 (MQT 10)
✔Apparatus
◆A temperature-controlled test chamber with a window or fixtures for a UV light source and the module(s) under test. The chamber shall be capable of maintaining the module temperature at (60 ± 5) °C.
◆A means for monitoring the temperature of the module to an accuracy of ± 2,0 °C and repeatability of ± 0,5 °C. The temperature sensors shall be attached to the front or back surface of the module near the middle without obstructing any of the UV light incident on the active cells within the module. If more than one module is tested simultaneously, it will suffice to monitor the temperature of one representative sample.
◆Instrumentation capable of measuring the irradiance of the UV light produced by the UV light source at the test plane of the module(s), within the wavelength ranges of 280 nm to 320 nm and 320 nm to 400 nm with an uncertainly of ± 15 % or better.
◆A UV light source capable of producing UV radiation with an irradiance uniformity of ± 15 % over the test plane of the module(s) with no appreciable irradiance at wavelengths below 280 nm and capable of providing the necessary total irradiance in the different spectral regions of interest as defined in 4.1 0.3.
◆For light sources with a negligible spectral content in the visible range the module shall be short circuited. Alternatively the module can be connected to a load sized such that the module will operate near the maximum power point. The latter is recommended for light sources emitting a significant portion of light in the visible spectrum where the module exhibits a power equal to or larger than 20 % of its STC measured power
