Current stage: 30.99 Effective date: Aug 14, 2025
Next stage: TCDV Next stage date: Feb 26, 2026
Originator: IEC
Owner: TC 25
Type: International Standard
ICS: 01.060
PUBLISHED IEC 60027-1:1992 ED6
IN_DEVELOPMENT IEC 80000-17 ED1 30.99 CD approved for registration as DIS Aug 14, 2025