Current stage: 20.99 Effective date: Jul 17, 2026
Next stage: CD Next stage date: Oct 31, 2027
Originator: IEC
Owner: TC 62/SC 62B
Type: Technical Specification
ICS: 11.040.55
PROJECT IEC TS 63757 ED1 20.99 WD approved for registration as CD Jul 17, 2026