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SEL-851

Feeder Protection Relay

851#CNJK

  • Overcurrent, over/underfrequency, and breaker failure protection with autoreclosing
  • Universal power supply (24–250 Vdc/110–240 Vac).
  • Setting-selectable universal current inputs (1 A/5 A)
  • 10 digital inputs and 5 digital outputs (1 Form C, 2 Form A standard, and 2 Form A hybrid)
  • 4 arc-flash detection inputs
  • 3 voltage inputs (300 Vac)
  • Universal binary inputs (24–250 Vdc/Vac)
  • Communications ports: USB-C front port, EIA-232/EIA-485 rear serial port, and two 10/100BASE-T Ethernet ports
  • Protocols: SEL protocols, Modbus RTU, Modbus TCP, Telnet, FTP, HTTP/HTTP5 web server, SNTP, DNP3, and IEC 61850