23 IEC 60383-1-2023 2023-07-01 English,French 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 - Edition 5.0 24 IEC 61076-8-106-2023 2023-07-01 English,Fr...