Current stage: 40.99 Effective date: Aug 7, 2026
Next stage: DECFDIS Next stage date: Aug 14, 2026
Originator: IEC
Owner: TC 69
Type: International Standard
ICS: 43.120
PUBLISHED IEC 61851-1:2017 ED3
PUBLISHED IEC 61851-1:2017/COR1:2023 ED3
IN_DEVELOPMENT IEC 61851-1 ED4 40.99 Full report circulated: DIS approved for registration as FDIS Aug 7, 2026