html{display:none} SEL Home | Schweitzer Engineering Laboratories

MILLISECOND TRIPPING, MEGAHERTZ ANALYTICS, PRECISE FAULT LOCATING

The SEL-T400L traveling-wave and incremental-quantity relay for ultra-high-speed transmission line protection.

T400L Poster
FT50FR12 front

Speed Up Distribution Protection

SEL-FT50 and SEL-FR12 Fault Transmitter and Receiver System

ICON VSN Duo

ICON Virtual Synchronous Networking

Performance for Protection Networks

751 product img

Visualize What You're Protecting

Introducing the new touchscreen for the SEL-751 Feeder Protection Relay.

Engineering Services

Complete Engineering Services and Solutions for Electric Power Systems

Engineering Services
item.image[0].img.alt

SEL UNIVERSITY—POWER THROUGH KNOWLEDGE

SEL University (SELU) provides the education and training needed to make electric power safer, more reliable, and more economical.

item.image[0].img.alt

Highlights from the 2018 Modern Solutions Power Systems Conference

This visual, interactive article reflects the great ideas and thought leadership surrounding the conference.