Current stage: 20.99 Effective date: Feb 20, 2026
Next stage: CD Next stage date: Jul 24, 2026
Originator: IEC
Owner: TC 47/SC 47F
Type: International Standard
ICS: 31.080.99
IN_DEVELOPMENT IEC 62047-63 ED1 20.99 WD approved for registration as CD Feb 20, 2026