Standard Test Method for Evaluating Stress Cracking of Plastics by Adhesives Using the Bent-Beam Method has-hardcopy BS EN IEC 62688 specifies

BS EN IEC 62688 specifies the fundamental construction and testing requirements for Concentrator Photovoltaic (CPV) modules and assemblies in order to provide safe electrical and mechanical operation during their expected lifetime

Levels of compliance

These so-called “Westergren tubes” are also sometimes designated as “Westergren pipettes”

5 A when the voltage between live contacts is 400 V d

— explains in more detail the definitions of the different types/levels of attestation to enable customers to ensure their requirements are fulfilled

Standard Test Method for Evaluating Stress Cracking of Plastics by Adhesives Using the Bent-Beam Method has-hardcopy BS EN IEC 62688 specifies