html{display:none} TST 103: SEL Feeder Relay Testing | Schweitzer Engineering Laboratories

TST 103: SEL Feeder Relay Testing


TST 103 is intended for relay technicians or protection engineers and system consultants with an interest in relay testing.

In this course, you will learn the skills required to enter settings, test, commission, and troubleshoot SEL relays. You will:

  • Review skills required to work with SEL relays.
  • Learn about specific distribution relay testing considerations.
  • Practice the acquired skills by working with different relays throughout the course.
  • Gain familiarity with the operating principles of each type of relay.
  • Explore the features of SEL relay technology to make appropriate choices when designing test routines.

A variety of SEL relays are used during TST 103, including feeder protection (SEL-751A), transformer protection (SEL-787), and directional overcurrent (SEL-351S) relays.


Day 1
  • Introduction to Relay Testing
  • Overview of acSELerator QuickSet SEL-5030 Software
  • SEL-751A Relay Overview
  • Introduction to SELogic Control Equations
  • SEL-751A Hands-On Testing
  • Event Report Analysis
Day 2
  • SEL-787 Relay Overview
  • Introduction to Differential Testing
  • SEL-787 Hands-On Testing
  • SEL-787 Hands-On Analysis
Day 3
  • SEL-351S Relay Overview (includes a hands-on exercise)
  • SEL-351S Hands-On Testing: Part 2
  • Negative-Sequence Impedance Directional Element (includes a hands-on exercise)
  • SEL-351S Hands-On Analysis

Course Objectives

At the conclusion of this course, students can:

  • Establish communications with an SEL relay using acSELerator QuickSet SEL-5030 Software.
  • Enter settings into an SEL relay.
  • Equate Relay Word bits and SELogic control equations to traditional relay element outputs and discrete contact logic.
  • Test, commission, and troubleshoot using metering, sequential events recording, and event reporting features of SEL relays.
  • Calculate relay test points based on relay settings.
  • Analyze relay response with information recorded by the relay using SEL software.
  • Find information in the SEL relay instruction manuals.
  • Understand differential relay concepts and determine appropriate test values.
Course Information
Course Base Fees: $USD1,425*

CEUs: 2.1
Available Courses
Charlotte, North Carolina, USA
July 14–16, 2020

Schweitzer Engineering Laboratories
901 Center Park Dr
Charlotte, North Carolina 28217

Additional Information:

8:00 a.m. - 5:00 p.m.

Recommended Accommodations:

Homewood Suites by Hilton Charlotte/Ayrsley
1921 Ayrsley Town Blvd 
Charlotte, NC 28273 

Hampton Inn & Suites Charlotte-Arrowood Rd
9110 Southern Pine Blvd 
Charlotte, NC 28273 

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Course Requirements


Before you attend this class, you must meet the following requirements:

Course Preparation

Please check the General Course Information page for what you should bring to class. In addition, please make sure that the laptop you bring to class has the following software. (Note: This will require administration access to the computer.)

In addition, you will need a calculator capable of performing computations involving complex numbers (e.g., TI 30Xa or similar).