CBT 351: Introduction to SEL-351 Relays

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.

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Audience

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

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Agenda

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

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Learning Outcomes

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.

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Student Background and Knowledge

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