For professionals in the field, manufacturers like OMICRON provide specialized equipment like the to perform routine measurements according to the standard. CT Analyzer IEC 61869-2 Guide - OMICRON
It considers modern digital systems that have much lower "burdens" (loads) than old analog meters, adding a load range down to 1 VA for all measurement classes. 61869-2
Designed to scale down high currents for meters with high accuracy. For professionals in the field, manufacturers like OMICRON
It standardizes how magnetization curves are measured (using RMS for both axes), reducing confusion that existed when different standards used peak values. It standardizes how magnetization curves are measured (using
Accuracy is defined by a "Class" number, representing the maximum percentage error allowed at rated current.
In short, IEC 61869-2 isn't a page-turner. But if you want your voltage measurements to survive a nearby lightning strike, a harmonic storm from a solar farm, and a digital relay's relentless sampling—this is the document that makes it possible. Respect the VT. Read the standard.