TST 101: SEL Relay Testing Basics

TST 101 provides a beginner-level introduction to testing SEL relays. Students will learn basic relay testing skills; acquire skills required to work with SEL relays, such as using Relay Word bits and relay event reports; and practice acquired skills by working with a phase and ground distance (SEL-311C) relay during the training.

Audience

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

Agenda

Day 1

• Introduction to Relay Testing
• Introduction to SELogic Control Equations
• Introduction to Symmetrical Components
• Using acSELerator QuickSet SEL-5030 Software With the SEL-311C
• Testing Aids and Tools
• SEL-311C Transmission Protection System Overview 
• SEL-5401 Relay Test System Software
• Introduction to Overcurrent Relay Testing (includes a hands-on exercise)

Day 2

• Negative-Sequence Impedance Directional Element Testing (includes a hands-on exercise)
• Distance Relay Testing (includes a hands-on exercise)
• Interpreting Event Report Data
• Reference: Creating Multistate Tests
• Appendix: Basic Relay Communications

Course Objectives

At the conclusion of this course, students can:

• Establish a serial communications link with an SEL relay using SEL 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.
• Analyze information recorded by the relay using SEL software.
• Calculate relay test points to verify responses.
• Find information in the SEL relay instruction manuals.