html{display:none} CBT 351: Introduction to SEL-351 Relays | Schweitzer Engineering Laboratories

CBT 351: Introduction to SEL-351 Relays

Single-User Training

PDHs: 4

Course Base Fees: $240*
* Plus Applicable Tax


Course Information

CBT licenses will expire one year from the purchase date.

CBT 351 covers the basics of SEL-351 and SEL-351S relays, such as front-panel operations, protection functions, a rear-panel interface overview, logic programming, and communications.

The CBT 351 course is designed as a half-day program but is self-paced.


This course is intended for protection engineers and/or technicians.


  • Getting Started
  • Front- and Rear-Panel Navigation
  • Setting the SEL-351 Relay
  • Programming the Relay
  • Loading Settings
  • Event Reporting
  • Communications
  • Knowledge Check

Course Objectives

At the conclusion of this course, students can:

  • Properly configure relay current and voltage inputs and contact outputs.
  • Simulate SEL-351 front-panel operation using pushbuttons and the LCD display, and interpret the front-panel LEDs.
  • Determine relay settings for phase and ground overcurrent protection, load-shedding, and cold load pickup schemes.
  • Program SELogic control equations, and interpret logic diagrams for customized protection logic.
  • Enter settings using acSELerator QuickSet SEL-5030 Software.
  • Retrieve event data for post-fault analysis.
  • Diagnose problems using meter data and the Sequential Events Recorder.
  • Identify some of the industry-standard protocols used to communicate with the relay.

Student Background and Knowledge

Before you attend this class, we recommend that you have a basic knowledge of power systems.

Available Courses

Single-User Training

SEL University Training Question



Course Preparation

Additional information is on the Course Policies page.