Schweitzer Engineering Laboratories (SEL) released the SEL-T400L Time-Domain Line Protection—the world’s first traveling-wave microprocessor-based relay. It detects power system faults and sends a ...

Schweitzer Engineering Laboratories, Inc. has introduced new features in the SEL-701 motor protection relay. Schweitzer Engineering Laboratories, Inc. (SEL) has introduced new features in the SEL-701 ...

Schweitzer Engineering Laboratories, Inc. (SEL) added an optional touchscreen display to the SEL-751 Feeder Protection Relay that allows users to easily navigate settings options and create custom bay ...

Schweitzer Engineering Laboratories, Inc. (SEL) has announced wide-area-measurement-based control in a transformer relay for the first time. This enhancement to the SEL-487E Transformer Protection ...