Sources Sought SEL-351S-7

Notice of intent to use a brand name product. 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-351S-7, manufactured by Schweitzer Engineering Laboratories (SEL), 2350 NE Hopkins Court, Pullman, WA 99163.

Fiscal Year 2027 SIOP PROJECT P-8026 ELECTRICAL BACKBONE Pearl Harbor Naval Shipyard and IMF Joint Base Pearl Harbor-Hickam, Hawaii, requires the following characteristics.

Provide protection system relay with the following capabilities:

• Feeder Protection – Protect distribution feeders using phase, ground, negative-sequence, and sensitive ground overcurrent elements. Provide instantaneous and time-overcurrent protection with configurable directional elements to detect and isolate feeder faults while maintaining system coordination.


• Breaker Control and Protection – Provide breaker failure protection, autoreclosing, synch-check (when required), trip circuit monitoring, and integrated breaker control functions to improve system reliability and minimize outage duration.


• Feeder Monitoring – Monitor three-phase currents, voltages, frequency, power, power factor, demand, and sequence quantities. Provide fault location, metering, and power quality information to support system operation, maintenance, and troubleshooting.


• Reporting and Monitoring – Provide Sequential Events Recorder (SER), oscillographic event reports, fault records, and relay diagnostics to document faults, trips, breaker operations, currents, voltages, and relay performance for post-event analysis.


• Panel Control Switches – Conveniently sized operator controls shall be located on the relay front panel and configured to track associated operator control functions, including breaker open/close control, relay status indication, and programmable pushbutton operations.

This notification is for market research purposes only to identify if other potential sources of supply can meet the requirements of the Government. This is not a request for proposals, quotes, or an invitation for bid. The intent of this notice is to identify other potential sources of this product. To be considered, please submit detailed technical data for the Government to conduct a comprehensive evaluation of your manufactured product to ensure compatibility with the existing system. In accordance with FAR 15.201(e), a response to this notice is not an offer and cannot be accepted by the Government to form a binding contract. The responder is solely responsible for the information it submits and any associated costs. The Government reserves the right to disregard any submittal that is incomplete or vague. Please do not submit company brochures. Please submit complete information via electronic mail to Ms. Annette Tijerina at annette.t.tijerina.civ@us.navy.mil no later than 30 July 2026 at 2:00 p.m. H.S.T. Any information received after the due date/time will not be considered. Any information provided to the Government in response to this RFI will become U.S. Government property and will not be returned. All proprietary or classified information will be treated appropriately.