Current stage: 40.99 Effective date: Dec 19, 2025
Next stage: DECFDIS Next stage date: Dec 31, 2025
Originator: IEC
Owner: TC 91
Type: International Standard
ICS: 31.180
IN_DEVELOPMENT IEC 63516 ED1 40.99 Full report circulated: DIS approved for registration as FDIS Dec 19, 2025