Current stage: 40.99 Effective date: Jan 9, 2026
Next stage: DECFDIS Next stage date: Jan 16, 2026
Originator: IEC
Owner: TC 124
Type: International Standard
ICS: 59.080.80
IN_DEVELOPMENT IEC 63517 ED1 40.99 Full report circulated: DIS approved for registration as FDIS Jan 9, 2026