IEC 60383-1:2023 Insulators for overhead lines with a nominal voltage above 1000 V - Part 1: Ceramic or glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria
2023IEC 60383-1:2023 Insulators for overhead lines with a nominal voltage above 1000 V - Part 1: Ceramic or glass insulator units for a.c. systems - Definitions, test methods and acceptance criteria
1993IEC 60383-1:1993 Insulators for overhead lines with nominal voltage above 1000 V; part 1: ceramic or glass insulator units for a.c. systems; definitions, test methods and acceptance criteria