Current stage: 20.99 Effective date: Jan 9, 2026
Next stage: CD Next stage date: Jun 26, 2026
Originator: IEC
Owner: TC 115
Type: Technical Specification
ICS: 29.240.10 29.240.99
PUBLISHED IEC TS 61973:2012 ED1
PUBLISHED IEC TS 61973:2012/AMD1:2019 ED1
IN_DEVELOPMENT IEC TS 61973 ED2 20.99 WD approved for registration as CD Jan 9, 2026