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SEL-387
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SEL-387
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Instruction Manual
SEL-387 Current Differential and Overcurrent Relay
Data Sheet
SEL-387 Current Differential and Overcurrent Protection Relay
Flyer
SEL-387 Current Differential and Overcurrent Relay
Literature
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Literature
Flyers
Featured
SEL-387 Current Differential and Overcurrent Relay
SEL-9220 Fiber-Optic Adapter for SEL-300 Series Relays
Conformal Coating
Data Sheets
SEL-387 Current Differential and Overcurrent Protection Relay
Guideform Specifications
SEL-387 Current Differential and Overcurrent Relay
SEL-387 Current Differential and Overcurrent Relay
Instruction Manuals
SEL-387 Current Differential and Overcurrent Relay
Settings Sheets
SEL-387-0, -5, -6 Relay Commissioning Test Worksheet
SEL-387-0, -5, -6 Relay DNP Port—SET P Settings Sheets
SEL-387-0, -5, -6 Relay Settings Sheets
Ordering Information
SEL-387-0, -5, -6 Connectorized Relay
SEL-387-0, -5, -6 Relay
Wiring Harness for Connectorized SEL-387
Publications
Application Guides
Using Synchrowave Event to Model REF Elements and Troubleshoot Installations
Related Material
AG2024-12
Applying REF Protection With SEL-787 and SEL-387 Relays on Low-Impedance Grounded Transformers
Using Custom Calculations in Synchrowave Event to Analyze Harmonic Signal Distortion
Related Material
AG2024-11
Troubleshooting Transformer Relay Installations With Synchrowave Event
Using Synchrowave Event to Model Transformer Differential With Harmonic Restraint and Blocking
Related Material
AG2020-28
Maintaining Switched-Mode Relay Responsiveness in an RSTP Network
Visualizing Percentage-Restrained Differential Characteristics Using Synchrowave Event
Differential Protection of Transformers With an In-Zone Grounding Bank on the Delta Side
Defining DCE and DTE: Null Modem Cable and Straight-Through Cable Applications
Protecting Scott-Connected Transformers With SEL Transformer Differential Relays
Calculating and Testing Transformer Thermal-Model Constants
Related Material
Transformer Cooling Constants
Selecting Transformer Compensation Settings for the SEL-387, SEL-487E, and SEL-787 Relays
Setting Winding Compensation for SEL-387 Relays Used for Bus Differential Protection
Three-Phase Restrained Differential Element Testing for the SEL-387 and SEL-787
Related Material
Test Point Calculation Spreadsheet
Testing the SEL-487E Relay Differential Elements
Related Material
SEL-487E Single Phase Test Current Calculator
Connection and Configuration of an SEL Communications Processor and an SEL-2410 I/O Processor to Obtain Measured Ambient and Top-Oil Temperatures for the SEL-387-6 Relay Thermal Element
SEL-387 Through-Fault Monitoring Application and Benefits
Setting an SEL-587 or SEL-387 Differential Relay to Protect a Mobile DABY Transformer
Connection and Configuration of an SEL Communications Processor and an SEL-2600A to Obtain Measured Ambient and Top-Oil Temperatures for the SEL-387-6 Relay Thermal Element
Bus Protection Using a Four-Winding Low-Impedance Percentage Differential Relay
Applying the SEL-387-5 Relay Combined Overcurrent Elements
Case Studies
Relays and Communications Processors Help Energize Barrie Hydro Expansion, Automation, and Transition to Open Market
Relays Provide Critical Automation and Communications Features for Windsor Substation Upgrade and Auto Plant Transformer Stations
Technical Papers
Getting the Lines Crossed—How a Three-Phase Series Fault Caused a Sequence of Relay Operations
Drawings