Current stage: 50.00 Effective date: Nov 19, 2025
Next stage: CFDIS Next stage date: Feb 11, 2026
Originator: IEC
Owner: TC 23/SC 23K
Type: International Standard
ICS: 27.015 29.020
IN_DEVELOPMENT IEC 63552 ED1 50.00 Final text received or FDIS registered for formal approval Nov 19, 2025