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

PROT 301: Protecting Power Systems for Technicians


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

PROT 301 addresses the basic methods, tools, and devices used in the field 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
Course Information
Course Base Fees: $USD1,725*

CEUs: 2.1
Available Courses

There are currently no courses available. Request to be notified when this course is added to the schedule.


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Course Requirements


Students should have a basic knowledge of power systems. This course also requires completion of the SEL precourse review document or a working knowledge of the following:

  • Complex math
  • Trigonometry
  • Digital logic
  • Per-unit calculation

Course Preparation

Please check the General Course Information page for course preparation details.