IEC 61869-2 defines the new current transformer accuracy classes intended to replace the old standard, IEC60044-1 (note that IEC 61869-1 is designed for instrument transformers) .  The new and old standards are essentially identical, but IEC 61869-2 consolidated two parts of the older standard: IEC 60044-1 : Instrument transformers – Part 1: Current transformers IEC 60044-6 […]
Blog Post by: Fehlberg Victor