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. has released an enhanced operator interface on the SEL-400 series relays. Schweitzer Engineering Laboratories, Inc. has released an enhanced operator ...

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 ...