Current stage: 40.99 Effective date: Jun 27, 2025
Next stage: TDTS Next stage date: Jun 28, 2024
Originator: IEC
Owner: SyC SM
Type: Systems Reference Document
ICS: 25.040.01
IN_DEVELOPMENT IEC SRD 63459 ED1 40.99 Full report circulated: DIS approved for registration as FDIS Jun 27, 2025