PUBLISHED
IEC 61557-12:2018 ED2
PUBLISHED
IEC 61557-12:2018/AMD1:2021 ED2
PUBLISHED
IEC 61557-12:2018/COR1:2022 ED2
IN_DEVELOPMENT
IEC 61557-12 ED3
20.99
WD approved for registration as CD
Sep 18, 2025