BS EN 61345:1998 UV test for photovoltaic (PV) modules

What is BS EN 61345 - UV test for PV modules about? 
BS EN 61345 is an International Standard that discusses photovoltaic (PV) modules. 
BS EN 61345 defines a test that determines the resistance of the module when exposed to ultra-violet (UV) radiation. This test is useful for evaluating the UV resistance of materials such as polymers and protective coatings.  
The object of this test is to determine the ability of the module to withstand exposure to ultra-violet (UV) radiation from280 nm to 400 nm. Before conducting this test, light soaking or other pre-conditioning should be performed in accordance with BS EN IEC 61215 or BS EN IEC 61646. 
Who is BS EN 61345 - UV test for PV modules for? 
BS EN 61345 on UV test for PV modules is useful for: 
PV module manufacturers  
PV power system manufacturers 
Photoelectric device manufacturers 
Solar energy engineering industry 
Product designers 
Quality assurance and testing personnel 
Why should you use BS EN 61345 - UV test for PV modules? 
UV radiation accelerates the degradation of PV modules, deteriorates polymeric encapsulates of modules, and possibly affects the anti-reflective coatings applied on PV modules that can lead to detrimental effects on its power generation performance. 
BS EN 61345 provides guidance on the initial measurements, apparatus, and test procedure, and lays out the requirements to be fulfilled by the photovoltaic modules tested.