Current stage: 20.99 Effective date: 10 tet 2025
Next stage: CD Next stage date: 30 tet 2026
Originator: IEC
Owner: TC 59/SC 59L
Type: International Standard
ICS: 97.170
IN_DEVELOPMENT IEC 63689 ED1 20.99 WD approved for registration as CD 10 tet 2025