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SEL-421

Protection, Automation, and Control System

421#02

  • Subcycle distance protection
  • Series compensation logic and full automation
  • Serial communications protocols and FTP, Telnet, synchrophasors, DNP3, IEC 61850 Edition 2, and Precision Time Protocol (PTP)
  • One 10/100BASE-T and one 10/100BASE-FX connectors
  • 5U chassis
  • Front panel with 24 target LEDs, 12 operator control pushbuttons, and tricolor LEDs
  • Additional 8 optoisolated 125 V independent level-sensitive inputs; 13 standard Form A and 2 standard Form C outputs
  • 8 user-settable pickup voltage level independent inputs; 8 high-speed, high-current interrupting Form A outputs
Power Supply 48–125 Vdc or 110–120 Vac125–250 Vdc or 110–240 Vac
Secondary Voltage and Current Inputs 300 V phase-neutral maximum (wye), 1 A phase300 V phase-neutral maximum (wye), 5 A phase300 V phase-neutral maximum (wye), 1 A phase300 V phase-neutral maximum (wye), 5 A phase
Configuration Number 421#0204 421#0202 421#0203 421#0201
Typically Ships In 5 Days 5 Days 5 Days 5 Days
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