Current stage: 40.99 Effective date: Oct 2, 2026
Next stage: RDTS Next stage date: Dec 4, 2026
Originator: IEC
Owner: TC 45/SC 45A
Type: Technical Specification
ICS: 27.120.20
IN_DEVELOPMENT IEC TS 63574 ED1 40.99 Full report circulated: DIS approved for registration as FDIS Oct 2, 2026