html{display:none} EPROT 405: Industrial Power System Protection | Schweitzer Engineering Laboratories

ePROT 405: Industrial Power System Protection

Single-User Training

PDHs: 42

Course Base Fees: $2,100*
* Plus Applicable Tax


Course Information

This course is the eLearning version of PROT 405: Industrial Power System Protection..

ePROT 405 provides an overview of the principles and schemes for protecting medium-voltage overhead lines and cables, transformers, buses, generators, and motors, and it introduces the fundamentals of wide-area protection in industrial power systems. The course provides basic guidelines for relay application and settings calculation. It also reviews power system faults, industrial power system grounding methods, and instrument transformers.

This self-paced eLearning course combines instruction from SEL University instructors with exercises and provides opportunities to connect with instructors when you have questions or need further guidance. eLearning licenses will expire one year from the purchase date.

Course Base Fees: $2,100 USD


Engineers who need a comprehensive understanding of the challenges and solutions for protecting industrial power systems would benefit from this online, self-paced eLearning course.


  • Power System Faults
  • Introduction to Industrial Power Systems
  • Industrial Power System Protection Fundamentals
  • Instrument Transformers
  • Line Overcurrent Protection
  • Class Exercise: Overcurrent Protection Coordination
  • Line Directional Overcurrent, Distance, and Pilot Protection
  • Transformer Protection
  • Class Exercise: Transformer Differential Protection
  • Class Exercise: Transformer Overcurrent Protection
  • Bus Protection
  • Class Exercise: Bus Protection
  • Generator Protection
  • Class Exercise: Generator Protection
  • Motor Protection
  • Class Exercise: Motor Protection
  • Special Topics in Industrial Power Systems

Note: This course teaches fundamental knowledge but does not provide hands-on experience with SEL relays.

Course Outcomes

At the conclusion of this course, students can:

  • Identify the challenges and solutions to industrial power system protection problems.
  • Select the appropriate protection schemes for various applications.
  • Analyze power system faults for balanced and unbalanced conditions using symmetrical components.
  • Explain industrial power system topology and grounding methods
  • Describe current and voltage transformers and their impact on protection scheme performance.
  • Identify, apply, and calculate settings for overcurrent devices in industrial power systems.
  • Describe directional overcurrent, distance, and pilot protection schemes.
  • Identify, apply, and calculate settings for transformer and bus protection schemes.
  • Identify, apply, and calculate settings for generator and motor protection schemes.
  • Identify and apply wide-area protection schemes for industrial power systems.

Student Background and Knowledge

A degree in electrical engineering or equivalent experience is recommended. In addition, we recommend that you complete PROT 401: Protecting Power Systems for Engineers. or ePROT 401: Protecting Power Systems for Engineers. before taking ePROT 405 or have the following:

  • A basic knowledge of power systems and power system protection.
  • Familiarity with transformer, generator, and induction motor characteristics.
  • A working knowledge of ac three-phase electrical circuits, trigonometry, basic calculus, complex numbers, and phasor concepts.

Click here to view our recommended reading on these topics:

  • Electric circuit analysis
  • Electric machinery that covers transformers, synchronous generators, and induction motors
  • Power systems that cover symmetrical components, fault analysis, and power system control

Available Courses

Single-User Training

SEL University Training Question



Course Preparation

Additional information is on the Course Policies and FAQ pages.