Login SEL-351A TOGGLE DROPDOWN CONFIGURE TOGGLE DROPDOWN SEL-351A Protection System The SEL-351A Protection System has built-in Ethernet and IEEE C37.118 synchrophasors, and is the economical solution for overcurrent protection. Easy-to-use feeder protection and innovative features like SEL’s Best Choice Ground Directional Element logic and SELogic control equations provide superior protection on utility and industrial power systems. STARTING AT $1,600 USD CONFIGURE TOGGLE DROPDOWN View Popular Models Contact Us Comprehensive Protection—Provide primary or backup overcurrent protection on distribution feeders with sensitive phase, negative-sequence, residual, and neutral overcurrent protection elements. Relay Access Convenience—Access basic relay information on a standard Ethernet network with the built-in web server. Securely update firmware and view relay status, settings, and other read-only information within a local network. Protection Scheme Security—Set the bus overcurrent backup relay close to maximum bus load current levels by using load-encroachment logic to increase security in the system. Fault Location—Estimate fault locations accurately and reduce total costs by eliminating the need for expensive communications channels, special instrument transformers, prefault information, or line crews to travel the distance of the line for visual fault inspection. Optimized Asset Utilization—Validate system load flow and fault models by using instantaneous voltage angles from IEEE C37.118 synchrophasors. Use system-state measurements to increase stable system loading through reduced margin requirements. MORE Related Materials TRAINING - EDUCATION APP 351: SEL-351 Protection System LEARN MORE PRODUCT SEL-351 Protection System LEARN MORE View More Features Front Back 1 USB port simplifies local connections and speeds up relay communications 2 Front-panel LEDs alert operators in the substation to faulted phases, the relay’s status, and element operation 3 Default displays or programmable custom messages notify personnel of power system events or relay status 4 Optional SafeLock® trip/close pushbuttons and bright indicating LEDs allow breaker control independent of the relay 1 2 3 4 Details OVERVIEW OPTIONS POPULAR MODELS FIRMWARE Protection Communications Monitoring and Metering Product Certifications Discover Customer Highlights Solutions Technologies Products Product Catalogs SEL Video Financing About About SEL Careers Company Store Support Customer Service Technical Support Education Product Feature Comparisons FAQ Warranty Terms and Conditions Certifications Corporate Headquarters 2350 NE Hopkins Court Pullman, WA 99163 - USA Phone: +1.509.332.1890 Fax: +1.509.332.7990 © 2021 - Schweitzer Engineering Laboratories, Inc. Privacy Policy Cookie Policy Sitemap By continuing to browse or by clicking “Accept All Cookies,” you agree to the storing of first- and third-party cookies on your device to enhance site navigation and analyze site usage for an improved user experience. View our Cookie Policy ACCEPT ALL COOKIES