| AC Current Inputs (6 total) | 5 A nominal 1 A nominal |
| AC Voltage Inputs (6 total) | 300 VL-N continuous |
| Serial | 3 rear-panel and 1 front-panel EIA-232 serial ports; SEL ASCII commands, SEL Fast Messages, DNP3, IEEE C37.118 synchrophasors |
| Ethernet | Communications protocols include 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:
|
| Traveling-Wave Fault Locating (SEL-411L-1 only) | Type: Double-ended method Accuracy: ±25 m for step change in current applied simultaneously to both relays |
| TiDL Ports | Fiber-optic ports: 8 Range: ~2 km Data rate: 100 Mbps Protocol: SEL T-Protocol |
| SV Ports | Subscriber: As many as 7 SV data streams Data rate: 4.8 kHz for 60 Hz systems, 4 kHz for 50 Hz systems Protocol: IEC 61850-9-2 |
| Precise-Time Input | Demodulated IRIG-B time input and PTPv2 |
| Synchrophasors | Synchrophasor measurement: IEC/IEEE 60255-118-1:2018 (IEEE Std. C37.118.1:2011, 2014a) Synchrophasor data transfer: IEEE Std. C37.118.2:2011 Up to 50 messages per second (50 Hz system) Up to 60 messages per second (60 Hz system) UDP multicast capability |
| Processing | AC voltage and current inputs: 8,000 samples per second Protection and control processing: 8 times per power system cycle |
| 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) |