And 2 Pdf: Iec 614391
If you are working on a specific electrical project, let me know: What is the of your application?
The IEC 61439 series replaced the older IEC 60439 standards to provide a more rigorous framework for "Assemblies." It moves away from the old concepts of Type Tested Assemblies (TTA) and Partially Type Tested Assemblies (PTTA), replacing them with a more comprehensive system. IEC 61439-1: General Rules iec 614391 and 2 pdf