SEL SEL-751 Feeder Protection Relay

breaker wear monitoring, support for 12 external RTDs (SEL-2600), IRIG-B input, advanced SELOGIC, and

IEEE C37.118-2005-compliant synchrophasor protocol to provide real-time measurement data.

➤ Optional Communications Protocols. Optional communications protocols include IEC 61850 Edition 2.1.

Modbus TCP/IP, Simple Network Time Protocol (SNTP), IEEE 1588-2008 firmware-based PTP, IEEE 1588-2008

hardware-based PTP when in PRP mode, PRP, EtherNet/IP, DNP3 LAN/WAN, DNP3 serial, IEC 60870-5-103.

HSR, and RSTP. With an Ethernet equipped relay, use the integrated web server to view settings and metering and

monitoring data, download reports, and upgrade firmware.

➤ Optional Communications Ports. Elective communications ports include EIA-232 or EIA-485 multimode fiber

optic serial port and single or dual, copper or fiber-optic Ethernet ports.

➤ Optional I/O Cards. Digital and analog I/O options include 4 AI/4 AO, 4 DI/4 DO, 8 DI, 8 DO, 8 AI, 3 DI/4 DO/

1 AO, 4 DI/3 DO, and 14 DI. An optional 10 internal RTD card is also available for the SEL-751. Conformal

coating for chemically harsh and/or high-moisture environments is also available as an option.

➤ Optional I/O Modules. In addition to I/O cards, add as many as 4 I/O modules. Each module contains either 21

programmable inputs or 12 electromechanical outputs.

➤ Supported Languages. Choose English or Spanish for your serial ports, including the front-panel serial port. The

standard relay front-panel overlay is in English; a Spanish overlay is available as an ordering option