html{display:none} PROT 301: Protecting Power Systems for Technicians | Schweitzer Engineering Laboratories

PROT 301: Protecting Power Systems for Technicians

PDHs: 23

Course Base Fees: $1,800*
* Plus Applicable Tax


Course Information

This is a three-day course.

Course Base Fees: $1,800 USD

PROT 301 addresses the basic methods, tools, and devices used in the field of power system protection.


This course is intended for technicians and individuals without electrical engineering degrees who require an overall understanding of power system protection.


Day 1

  • Power System Basics
  • Electrical Equipment Damage
  • Power System Balanced Faults
  • Introduction to Symmetrical Components (includes a class exercise)
  • Power System Unbalanced Faults
  • Relaying Fundamentals

Day 2

  • Instrument Transformers: CTs and VTs (includes a class exercise)
  • Protective Relay Design
  • Introduction to Line Overcurrent Protection
  • Coordination of Overcurrent Protection in Radial Systems
  • Line Directional Overcurrent Protection
  • Transformer Overcurrent and Mechanical Protection

Day 3

  • Transformer Differential Protection (includes a class exercise)
  • Bus Protection (includes a class exercise)
  • Transmission Line Distance Protection Concepts
  • Transmission Line Distance Protection Issues
  • Line Pilot Protection
  • System Aspects of Protection

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

Course Objectives

At the conclusion of this course, students can:

  • Explain the importance of symmetrical components in analyzing power systems.
  • Identify the types of protective systems used for various applications.
  • Define distribution and transmission line protection principles.
  • Describe how differential, overcurrent, and mechanical methods are used to protect power transformers.
  • Use metering and event reporting functions from modern protective relay systems to monitor protection system performance.

Student Background and Knowledge

Before you attend this class, we recommend that you:

  • Have a basic knowledge of power systems.
  • Complete SEL precourse review document OR have a working knowledge of complex math, trigonometry, digital logic, and per-unit calculations.

Click here to view our recommended reading on various topics.

Available Courses

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Course Preparation

Digital course materials: A link to download the digital course materials will be sent via email 2 weeks prior to the course, and a workbook will be provided on the first day.

Additional information is on the Course Policies and FAQ pages.