PUBLISHED
IEC 61109:2025 ED3
PROJECT
IEC 61109/AMD1 ED3
30.99
CD approved for registration as DIS
Dec 11, 2025
Insulators for overhead lines - Composite suspension and tension insulators with AC voltage greater than 1 000 v and DC voltage greater than 1 500 v - Definitions, test methods and acceptance criteria
10.99 New project approved