Category Archives: Current Transformers

CT Specs – Part 4 Class PX and Differential Protection Preamble This is the final part in the series of blogs on current transformers.  The topics covered in this blog are Class PX CT specifications.  An understanding of Class PX … Continue reading →

CT Specs – Part 3 – IEEE v/s IEC Preamble IEEE C57.13 standard is used for specifying current transformers in North America (USA and Canada).  The rest of the world now largely follows the International Standard IEC 61869.1 (previously IEC … Continue reading →

CT Specs – Part 2 – Class P Application Preamble Part 1 of this blog presented an overview of Australian & IEC standards for Class P type Current Transformer (CT) specifications.  This blog presents the application of Class P type … Continue reading →