Current stage: 20.99 Effective date: May 6, 2022
Next stage: CD Next stage date: Dec 30, 2022
Originator: IEC
Owner: TC 1
Type: International Standard
ICS: 01.040.17 17.220.20
IN_DEVELOPMENT IEC 60050-313 ED1 20.99 WD approved for registration as CD May 6, 2022