280~400nm wavelength Ultraviolet rays tester /UV testing chamber/ UV environment chamber for PV Module

Testing standard

It's conform IEC61215-2:2016 testing standard requirement 

Purpose

to precondition the module with ultra-violet (UV) radiation before the thermal cycle/humidity freeze tests to identify those materials and adhesive bonds that are susceptible to UV degradation

The Mainly Specifications 

Testing proceudre

1,Using the calibrated radiameter measure the irradiance at the proposed module test plane and ensure that at wavelength between 280nm and 400nm it does not exceed 250W/M2 (i.e. about five times the natural sunlight level) and that it has a uniformity of ±15% over the test plane

2,Short-circuit or attach the resistive load to the module and mount it in the test plane at the location selected , normal to the UV irradiance beam. Make sure that the module temperature sensors read 65±5℃

3,Subject the modules front side to a total UV irradiation of at least 15 KW/m2 in the wavelength range between 280nm and 400nm with at least 3%, but not more than 10% in the wavelength band between 280nm and 320nm , while maintaining the module temperature within the prescribed range