Current stage: 50.00 Effective date: May 22, 2026
Next stage: CFDIS Next stage date: Aug 14, 2026
Originator: IEC
Owner: TC 91
Type: International Standard
ICS: 31.180
IN_DEVELOPMENT IEC 63516 ED1 50.00 Final text received or FDIS registered for formal approval May 22, 2026