html{display:none} WBT 351: SEL-351 Relay Coordination Techniques | Schweitzer Engineering Laboratories

WBT 351: SEL-351 Relay Coordination Techniques

CEUs: 0.5

Course Base Fees: $470 USD*
* Plus Applicable Tax


Course Information

This is a two-day course.

Course Base Fees: $470 USD

In WBT 351, learn how to apply techniques for coordinating an SEL-351 Directional Overcurrent and Reclosing Relay with upstream and downstream devices. Real-world SEL-351 applications provide you with an ideal learning environment for practicing step-by-step settings calculations.


This course is for protection engineers and technicians who want to enhance their knowledge of relay coordination techniques.


Day 1

  • Introduction to Coordination: Distribution System Faults
  • SEL-351 Protection Overview
  • Coordination Strategies

Day 2

  • Coordination Pairs: Calculating Pickup and Time Dial Settings
  • SEL-351 Coordination Application Examples

Course Objectives

At the conclusion of this course, students can:

  • Describe the basic overcurrent device coordination goals, principles, and strategies.
  • Identify common coordination pairs.
  • Describe the basic SEL-351 protection and coordination settings, including phase and ground instantaneous, phase and ground definite-time, phase and ground time-overcurrent, and reclosing settings.
  • Determine SEL-351 coordination settings using provided calculation methods and/or criteria to coordinate with upstream and downstream devices.
  • Apply coordination strategies to real-world application examples.

Student Background and Knowledge

Before the class starts, we highly recommend that you complete CBT 351: Introduction to SEL-351 Relays.

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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.

Please ensure that your laptop does not have any installation blocks before you come to class.

Additional information is on the Course Policies page.