Current stage: 20.99 Effective date: May 29, 2026
Next stage: CD Next stage date: Jul 17, 2026
Originator: IEC
Owner: TC 62/SC 62A
Type: Technical Specification
ICS: 11.040.01 33.100
IN_DEVELOPMENT IEC TS 63738 ED1 20.99 WD approved for registration as CD May 29, 2026