Products
Fault Locating
SEL fault-locating technologies quickly and accurately locate transmission and distribution faults, enabling faster crew dispatch and service restoration. Most SEL relays offer impedance-based fault locating, and a selection of SEL devices also offer extremely precise traveling-wave-based fault locating.
Traveling-Wave-Based Fault Locating
SEL traveling-wave fault locators use ultra-high-resolution monitoring to detect traveling waves from temporary faults, permanent faults, and fault precursors. These devices also include impedance-based methods for locating faults when traveling waves are weak or distorted.
Overhead Fault Indicators and Systems
Install these devices on overhead lines to identify faulted line sections and enhance protection schemes.
Underground Fault Indicators and Systems
Install these rugged, submersible devices in subsurface and pad-mounted applications to identify faulted underground cable sections.
Configuration and Visualization Software
SEL software provides powerful tools for configuring devices and visualizing fault records and other power system data.
Accessories
SEL accessories support the installation, testing, and integration of SEL devices in electric power systems.