New classifications for special tests as type or routine tests, along with a dedicated clause for commissioning tests .
: Up to 20 kHz (often used for high-accuracy 0.1-WB2 classes). iec 618691 pdf best
: Establishes standards for digital interfaces, referencing IEC 61869-9 and the IEC 61850 series for power utility automation. Best Sources for the PDF Standard New classifications for special tests as type or
The 2023 edition is a major technical revision that the original 2007 version and merges with IEC 61869-6:2016 (additional general requirements for low-power instrument transformers). Key Technical Content iec 618691 pdf best