Current stage: 50.00 Effective date: Jan 20, 2026
Next stage: CFDIS Next stage date: Apr 14, 2026
Originator: IEC
Owner: TC 124
Type: International Standard
ICS: 59.080.80
IN_DEVELOPMENT IEC 63517 ED1 50.00 Final text received or FDIS registered for formal approval Jan 20, 2026