Current stage: 40.99 Effective date: 25 sht 2026
Next stage: DECFDIS Next stage date: 2 tet 2026
Originator: IEC
Owner: TC 3
Type: International Standard
ICS: 01.110 29.020
IN_DEVELOPMENT IEC 81346-50 ED1 40.99 Full report circulated: DIS approved for registration as FDIS 25 sht 2026