Current stage: 20.99 Effective date: Oct 10, 2025
Next stage: CD Next stage date: Jun 30, 2026
Originator: IEC
Owner: TC 59/SC 59A
Type: International Standard
ICS: 97.040.40
PUBLISHED IEC 63136:2019 ED1
PUBLISHED IEC 63136:2019/COR1:2021 ED1
IN_DEVELOPMENT IEC 63136 ED2 20.99 WD approved for registration as CD Oct 10, 2025