Current stage: 30.99 Effective date: 20 mar 2026
Next stage: TCDV Next stage date: 31 gush 2026
Originator: IEC
Owner: TC 87
Type: International Standard
ICS: 17.140.50
IN_DEVELOPMENT IEC 63440 ED1 30.99 CD approved for registration as DIS 20 mar 2026