Current stage: 30.99 Effective date: Jun 5, 2026
Next stage: TCDV Next stage date: Aug 31, 2026
Originator: IEC
Owner: TC 125
Type: International Standard
ICS: 43.120
IN_DEVELOPMENT IEC 63281-5-1 ED1 30.99 CD approved for registration as DIS Jun 5, 2026