Current stage: 20.99 Effective date: Jan 29, 2026
Next stage: CD Next stage date: Nov 18, 2026
Originator: IEC
Owner: TC 2
Type: International Standard
ICS: 29.160.01
PUBLISHED IEC 60034-6:1991 ED2
ABANDON IEC 60034-6 ED3
IN_DEVELOPMENT IEC 60034-6 ED4 20.99 WD approved for registration as CD Jan 29, 2026