Current stage: 40.99 Effective date: 14 gush 2026
Next stage: DECFDIS Next stage date: 28 gush 2026
Originator: IEC
Owner: TC 47
Type: International Standard
ICS: 31.080.99
IN_DEVELOPMENT IEC 63550-3 ED1 40.99 Full report circulated: DIS approved for registration as FDIS 14 gush 2026