20.99 WD approved for registration as CD Sep 15, 2023
CD Mar 31, 2025
IEC
International Standard
This standard defines the design/type tests, routine test, acceptance tests and classifications for Surge Arc Suppressor (SAS) devices, non-metal oxide arc suppressing device that consist of arc quenching mechanisms for overhead transmission and distribution lines of a.c. systems above 1 kV.
IN_DEVELOPMENT
IEC 63518-1 ED1
20.99
WD approved for registration as CD
Sep 15, 2023