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Electric Power System Guru

Electric Power – Part 1 – SI Units & History

Posted on August 1, 2020 by admin

Electric Power – Part 1 – SI Units & History Preamble The concept of power in electrical power systems is an important topic for power systems engineers.  Everyone remembers the equation for power as a product of voltage and current … Continue reading →

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CT Specs – Part 4 – (Class PX & Diff Protection)

Posted on June 30, 2020 by admin

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 →

Posted in Current Transformers | 13 Comments

CT Specs – Part 3 – (IEEE vs IEC)

Posted on May 24, 2020 by admin

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 →

Posted in Current Transformers | 2 Comments