Documentation

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Instruction Manual

SEL-T401L Ultra-High-Speed Line Relay

Data Sheet

SEL-T401L Ultra-High-Speed Line Relay

Flyer

SEL-T401L Ultra-High-Speed Line Relay

Literature

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Literature

Flyers

Featured SEL-T401L Ultra-High-Speed Line Relay

Data Sheets

Featured SEL-T401L Ultra-High-Speed Line Relay

Instruction Manuals

Featured SEL-T401L Ultra-High-Speed Line Relay

Configurable Labels

SEL-T401L Custom Label Instructions

Related Material

SEL-T400L, SEL-T401L, and SEL-TWFL Custom Label Template (Letter)

SEL-T400L, SEL-T401L, and SEL-TWFL Custom Label Template (A4)

Related Downloads

SEL-T401L DNP Device Profile Information

Publications

Application Guides

Testing Quadrilateral Distance Elements in the SEL-T401L by Using the Constant Voltage Method

Related Material

AG2024-04_T401LQuadrilateralTesting

Double-Ended Traveling-Wave Fault Locating Using the SEL RTAC as a DNP3 Client

Related Material

fb_TWFaultLocation.xml

Using Custom Calculations in synchroWAVe Event Software to Model SEL-T401L Phasor-Based Protection Elements

Related Material

T401L Model Version History

Technical Papers

Case Study: Traveling-Wave Fault Locating for an HVdc Transmission Line

Dependability of Transient-Based Line Protection Elements and Schemes

Getting the Lines Crossed—How a Three-Phase Series Fault Caused a Sequence of Relay Operations

Security Criterion for Distance Zone 1 Applications in High SIR Systems With CCVTs

Evaluating Phasor-Based and Time-Domain Elements for Short Line Applications

Correlating Traveling-Wave Arrival Times to the Bewley Diagram—A New Systematic Approach for Offline Traveling-Wave Fault Locating

Distance Elements for Line Protection Applications Near Unconventional Sources

UHS Relay Testing for Optimal Protection of a Long 345 kV Line With Series Compensation

An Unlikely Pair? Combining Traveling Waves and Phasors for Reclosing on Hybrid Lines

Finding Faults Fast Saves Money and Improves Service

A Novel Protection Principle for Ultra-High-Speed Tripping of Lines Terminated on Transformers

A Method for Evaluating Loadability of Incremental-Quantity Distance Elements

Evaluation of Ultra-High-Speed Line Protection, Traveling-Wave Fault Locating, and Circuit Breaker Reignition Detection on a 220 kV Line in the Kalahari Basin, Namibia

Protecting EHV Transmission Lines Using Ultra-High-Speed Line Relays: A New Standard for PNM

Traveling-Wave Overcurrent – A New Way to Protect Lines Terminated on Transformers

Double-Ended Traveling-Wave Fault Locating Without Relay-to-Relay Communications

A New Digital Distance Element Implementation Using Coincidence Timing

Best of Both Worlds – Analog Principles Applied in a Digital Distance Relay

Distance Protection: Why Have We Started With a Circle, Does It Matter, and What Else Is Out There?

Line Length and Fault Distance Considerations in Traveling-Wave Protection and Fault-Locating Applications

Permissive or Blocking Pilot Protection Schemes? How to Have It Both Ways

A New Digital Filter Using Window Resizing for Protective Relay Applications

Circuit Breaker Ratings – A Primer for Protection Engineers

Preventing Line Faults With Continuous Monitoring Based on Current Traveling Waves

Locating Faults Before the Breaker Opens – Adaptive Autoreclosing Based on the Location of the Fault

Application of Ultra-High-Speed Protection and Traveling-Wave Fault Locating on a Hybrid Line

Improving Line Crew Dispatch Accuracy When Using Traveling-Wave Fault Locators

Practical Experience With Ultra-High-Speed Line Protective Relays

Sequence Component Applications in Protective Relays – Advantages, Limitations, and Solutions

Mystery Solved: Five Surprises Discovered With Megahertz Sampling and Traveling-Wave Data Analysis

Field Experience With an Ultra-High-Speed Line Relay and Traveling-Wave Fault Locator

Traveling-Wave Fault Locating for Multiterminal and Hybrid Transmission Lines

Testing Traveling-Wave Line Protection and Fault Locators

Testing Superimposed-Component and Traveling-Wave Line Protection

Accurate and Economical Traveling-Wave Fault Locating Without Communications

Sharing Direct Fiber Channels Between Protection and Enterprise Applications Using Wavelength Division Multiplexing

Directional Elements – How Fast Can They Be?

Performance Comparison Between Mho Elements and Incremental Quantity-Based Distance Elements

Practical Setting Considerations for Protective Relays That Use Incremental Quantities and Traveling Waves

Defining and Measuring the Performance of Line Protective Relays

Performance of Time-Domain Line Protection Elements on Real-World Faults

Speed of Line Protection – Can We Break Free of Phasor Limitations?

Locating Faults by the Traveling Waves They Launch

Drawings

AutoCAD

i6360a Front View

i6361a Rear View

i9386a Dimensional View

PDF

i6360a Front View

i6361a Rear View

i9386a Dimensional View