Current stage: 20.99 Effective date: Oct 11, 2024
Next stage: CD Next stage date: May 1, 2025
Originator: IEC
Owner: TC 111
Type: International Standard
ICS: 13.020.30 31.020
IN_DEVELOPMENT IEC 63591 ED1 20.99 WD approved for registration as CD Oct 11, 2024