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IEC 60099-4 ED4

Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems

General information

20.99     Aug 20, 2024

CD    Sep 30, 2027

IEC

TC 37

International Standard

29.120.50     29.240.10  

Life cycle

PREVIOUSLY

PUBLISHED
IEC 60099-4:2014 ED3

NOW

IN_DEVELOPMENT
IEC 60099-4 ED4
20.99 WD approved for registration as CD
Aug 20, 2024