Sources Sought for SEL-387L

The Naval Facilities Engineering Systems Command, Pacific (NAVFAC Pacific) is performing a market survey to determine if other potential sources of supply can provide a transformer protection relay that has equal performance requirements as the SEL-387L, manufactured by Schweitzer Engineering Laboratories (SEL). The required transformer protection relay should have characteristics such as line differential protection, backup protection, line monitoring, reporting and monitoring, and panel control switches. • Line Differential Protection: Protect transmission or distribution lines using current differential protection for high-speed clearing of internal line faults. • Backup Protection: Provide comprehensive backup protection including phase, negative-sequence, and ground overcurrent elements, directional overcurrent elements, breaker failure protection, and configurable distance or permissive tripping functions. • Line Monitoring: Monitor three-phase currents, voltages, frequency, power, sequence quantities, and communications-assisted protection status. • Reporting and Monitoring: Provide event reporting with sequential event recorder (SER), oscillographic event reports, fault records, and communications diagnostics. • Panel Control Switches: Conveniently sized operator controls shall be located on the relay front panel and configured to track associated operator control functions.