Current stage: 40.99 Effective date: May 22, 2026
Next stage: RDTS Next stage date: May 22, 2026
Originator: IEC
Owner: TC 82
Type: Technical Specification
ICS: 27.160
PROJECT IEC TS 62446-4 ED1 40.99 Full report circulated: DIS approved for registration as FDIS May 22, 2026