Current stage: 20.99 Effective date: Aug 15, 2025
Next stage: CD Next stage date: Jan 31, 2026
Originator: IEC
Owner: TC 22/SC 22F
Type: Technical Report
ICS: 29.240.99
IN_DEVELOPMENT IEC TR 63604 ED1 20.99 WD approved for registration as CD Aug 15, 2025