Current stage: 40.99 Effective date: Jun 5, 2026
Next stage: RDTS Next stage date: Jul 31, 2026
Originator: IEC
Owner: TC 115
Type: Technical Specification
ICS: 29.240.01 03.100.10
IN_DEVELOPMENT IEC TS 62978 ED1 40.99 Full report circulated: DIS approved for registration as FDIS Jun 5, 2026