Course Catalogue.

Symmetrical Components for Unbalanced 3 Phase Power System Analysis

2 Professional Development Hours


This course is part of a web series entitled 'Web Series: System Fault Analysis' which includes three webinars:

You save 20% when you enroll for the series.

After Participating in this course, you will be able to:

  • Define Symmetrical Components and their Use
  • Understand the Advantages of using Symmetrical Components
  • Recognise an Unbalanced System and When it Occurs
  • Define the “a” Operator and its Functionality
  • Convert to and from Symmetrical Components

This course is designed to provide a basic understanding of Symmetrical Components used in the analysis of asymmetrical currents and voltages in a three phase system. It will provide the student with the background knowledge on which to model different faults on a three phase circuit. It will include working examples of practical situations and a quick peek into how models are derived for; phase-to-ground, phase-to-phase, phase-to-phase-to-ground and three phase short circuits are derived.

Course Outline:

  • Charles Fortescue Engineer and Founder of  Symmetrical Components
  • Defining Symmetrical Components
  • The Positive, Negative and Zero Sequence Components
  • Unbalanced Currents and Voltage in a Three Phase System
  • Phase-to-Ground Unbalanced Currents
  • Phase-to-Phase Unbalanced Currents
  • A Closer Look at the Positive, Negative and Zero Sequence Components
  • Defining the “a” Operator and Some of its Properties
  • The Process of Converting to and from Symmetrical Components

Who Should Attend:
Those looking to work in the protection and control area of power systems and wish to have a more comprehensive understanding of the basic workings of this area.

  • Students
  • Managers
  • Engineers
  • Technologists
  • Maintenance Workers
Course Rating
4.9 out of 5

Overall rating of this course by its previous attendees!


Almost all of EPIC's courses offer :

  • Continuing Education Units (CEUs) and
  • Professional Development Hours (PDHs)

These course credits will help attendees earn training requirements for their associations or provincial governing bodies.

This course can be customized and delivered to a group at your facility saving time and money.
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