Current stage: 30.99 Effective date: Jul 4, 2025
Next stage: TCDV Next stage date: Jul 18, 2025
Originator: IEC
Owner: TC 94
Type: International Standard
ICS: 29.120.70
IN_DEVELOPMENT IEC 63522-3 ED1 30.99 CD approved for registration as DIS Jul 4, 2025