DS/IEC 455-1:1981 Specification for solventless polymerisable resinous compounds used for electrical insulation. Part 1: Definitions and general requirements
1999DS/EN 60455-1:1999 Resin based reactive compounds used for electrical insulation - Part 1: Definitions and general requirements
1981DS/IEC 455-1:1981 Specification for solventless polymerisable resinous compounds used for electrical insulation. Part 1: Definitions and general requirements
DS/IEC 455-1:1981 Specification for solventless polymerisable resinous compounds used for electrical insulation. Part 1: Definitions and general requirements was changed to DS/EN 60455-1:1999 Resin based reactive compounds used for electrical insulation - Part 1: Definitions and general requirements.