voltage protection relay / for recloser control / transmission line
Schweitzer Engineering Laboratories
for recloser control, transmission line
Transmission Protection System
Apply the SEL-311C Relay for protection, reclosing, monitoring, and control of transmission lines.
Features include a four-shot recloser, patented capacitance voltage transformer (CVT) transient overreach logic to enhance security of Zone 1 distance elements, and overcurrent elements with directional control, monitoring, and metering. Apply three-pole tripping logic, or select the SEL-311C-3 for single-pole tripping. The SEL-311C comes standard with EIA-232 serial ports as well as a 10/100 BASE-T Ethernet port for local/remote access and system integration. IEEE C37.118 compliant synchrophasors are included for improved situational awareness.