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The shift from the IEC 60044 series to IEC 61869 was largely driven by the introduction of (electronic transformers). IEC 61869-1 provides the framework that allows both traditional inductive transformers and modern digital sensors to be specified and tested under a unified standard, facilitating easier integration into modern Smart Grid infrastructures. iec 61869-1 pdf free download
The latest revision, published in , replaced the 2007 version and integrated content from IEC 61869-6:2016 . Key updates include: You're looking for a free download of the IEC 61869-1 PDF