Current stage: 20.99 Effective date: 26 qer 2026
Next stage: CD Next stage date: 22 jan 2027
Originator: IEC
Owner: TC 47/SC 47F
Type: International Standard
ICS: 31.080.99
IN_DEVELOPMENT IEC 62047-64 ED1 20.99 WD approved for registration as CD 26 qer 2026