APP 351R: SEL-351R Recloser Control

Students in APP 351R explore the traditional recloser control functions and the complete distribution system protection capabilities of the SEL-351R Recloser Control. APP 351R also covers advanced applications, including selective load shedding, loop-feed systems, and using dual recloser controls to provide premium service reliability. In groups of two, students will work with the SEL-351R to perform hands-on communications, settings, and testing.

Audience

This course is designed for utility and industrial protection engineers and power system consultants.

Agenda

Day 1

• SEL-351R Recloser Control Overview
• acSELerator QuickSet SEL-5030 Software (includes optional SEL-5010 Relay Assistant Software)
• Global EZ Settings
• EZ Settings
• Front-Panel Interface (includes a hands-on exercise)
• Logic Settings

Day 2

• SEL-5401 Software (includes hands-on exercise, Part 1)
• Front-Panel Custom Display and Control (includes a hands-on exercise)
• Reclosing Logic and Settings
• Hands-On Exercise, Part 2: Reclosing and Underfrequency Testing
• Battery Monitor
• Event Reporting and Sequential Events Recorder
• Optional:
• Breaker/Recloser Monitor
• Voltage Elements and Associated Hands-On Exercises
• Synchronism Check

Course Objectives

At the conclusion of this course, students can:

• Describe how to upgrade existing substation and pole-mounted recloser controls.
• Communicate with the recloser control through front-panel and serial port interfaces.
• Use QuickSet to apply EZ settings, program SELogic control equations, and analyze event reports.
• Discuss relay-to-relay logic communications via the Mirrored Bits communications protocol.
• Coordinate with upstream feeder relays for high-speed fault clearing on distribution circuits.
• Apply high-side transformer blown fuse detection logic to protect customers from potentially damaging unbalanced voltages.
• Use the fault detection capability to identify feeder trouble points.

Student Background and Knowledge

Before you attend this class, we recommend that you:

• Complete CBT 101: Introduction to SEL Relays (highly recommended) OR have basic familiarity with protective relaying, SELogic control equations, acSELerator QuickSet SEL-5030 Software, front-panel controls, and the SEL‑4000 Relay Test System.
• Have the ability to set up a communications session.