PUBLISHED
IEC 60050-617:2009 ED1
PUBLISHED
IEC 60050-617:2009/AMD1:2011 ED1
PUBLISHED
IEC 60050-617:2009/AMD2:2017 ED1
PUBLISHED
IEC 60050-617:2009/AMD3:2018 ED1
IN_DEVELOPMENT
IEC 60050-617/AMD4 ED1
50.20
Proof sent to secretariat or FDIS ballot initiated: 8 weeks
May 22, 2026
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