Current stage: 50.00 Effective date: Jan 26, 2026
Next stage: CFDIS Next stage date: Apr 20, 2026
Originator: IEC
Owner: TC 94
Type: International Standard
ICS: 29.120.70
IN_DEVELOPMENT IEC 63522-46 ED1 50.00 Final text received or FDIS registered for formal approval Jan 26, 2026