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IEC TS 62271-307 ED1

High-voltage switchgear and controlgear - Part 307: Procedures for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

General information

20.99     Feb 20, 2026

CD    Jun 30, 2026

IEC

TC 17/SC 17C

Technical Specification

Life cycle

NOW

PROJECT
IEC TS 62271-307 ED1
20.99 WD approved for registration as CD
Feb 20, 2026