IEC 60626-3:2008/AMD1:2012-Amendment 1-Combined flexible materials for electrical insulation-Part 3: Specifications for individual materials, IEC 61143-1:1992/AMD1:1997-Amendment 1-Electrical measuring instruments-X-t recorders-Part 1: Definitions and requirements, IEC 62933-5-2:2020-Electrical energy storage (EES) systems-Part 5-2: Safety requirem