The built-in fault-locating methods in SEL devices allow you to quickly identify faults, dispatch crews for repairs, and restore service faster.
Traveling-Wave-Based Fault-Locating
These devices use traveling wave propagation time to calculate fault locations that are accurate to one tower span.
Impedance-Based Fault-Locating
These relays use voltage and current measurements as well as line impedance values to calculate fault locations.
