Current stage: 50.00 Effective date: Aug 25, 2025
Next stage: CDTR Next stage date: Oct 20, 2025
Originator: IEC
Owner: TC 129
Type: Technical Report
ICS: 01.040.25 25.040.01
IN_DEVELOPMENT IEC TR 63439-1-2 ED1 50.00 Final text received or FDIS registered for formal approval Aug 25, 2025