html{display:none} SEL-400G Advanced Generator Protection System - Specifications | Schweitzer Engineering Laboratories


AC Current Inputs (18 total) 15 inputs with 5 A or 1 A ordering options
3 inputs with 0.2 A, 1 A, or 5 A ordering options
AC Voltage Inputs (6 total)300 Vac continuous, 600 Vac for 10 seconds
Output ContactsThe relay supports Form A and C outputs.
Optoisolated Control Inputs

DC/AC control signals: 24, 48, 110, 125, 220, and 250 V

    Serial 1 front-panel and 3 rear-panel EIA-232 serial ports
    300–57,600 bps
    Ethernet Communications protocols include Modbus TCP, FTP, Telnet, synchrophasors, DNP3 LAN/WAN, PRP, PTPv2, and IEC 61850 Edition 2 (optional). For PTPv2 implementation, Ports 5A and 5B must be used for engineering access and SCADA.
    Choose from the following port options:
    • Four 10/100BASE-T twisted-pair network ports
    • Four 100BASE-FX fiber-optic network ports
    • Two 10/100BASE-T twisted-pair network ports and two 100BASEFX fiber-optic network ports
    Precise-Time InputDemodulated IRIG-B time input and PTPv2
    Frequency and Phase Rotation System frequency: 50, 60 Hz
    Phase rotation: ABC, ACB
    Frequency tracking: 5–120 Hz (requires ac voltage inputs)
    Autosynchronizing Control: As many as four breakers
    Control pulse modes: Proportional width, fixed duration, and proportional frequency
    Power Supply 24–48 Vdc
    48–125 Vdc or 110–120 Vac
    125–250 Vdc or 110–240 Vac
    Operating Temperature–40° to +85°C (–40° to +185°F)
    Note: LCD contrast is impaired for temperatures below –20°C (–4°F) and above +70°C (+158°F).