- Secure Line Differential Protection
Sensitive differential elements provide subcycle operating time. Restraint for external faults uses an easy-to-set vector ratio of remote and local currents.
- Synchrophasor Measurements
Turn state estimation into state measurement with wide-area measurement of voltage and current phase angles and magnitudes. Improve system stability with high-speed, load-angle measurements. Increase stable loading with analysis of voltage and angular stability.
- Complete Line Protection
Protect transmission lines using differential and a combination of four stepped-distance zones of phase and ground-distance elements in communications-assisted schemes, with directional overcurrent element backup protection. Patented Capacitance Voltage Transformer (CVT) transient overreach logic enhances security of Zone 1 distance elements. Best Choice Ground Directional Element logic optimizes directional element performance and requires no directional settings.
- Single-Pole Tripping
Use the optional single-pole tripping capability of the differential elements to improve system stability.
- Built-In Web Server
Access basic relay information on a standard Ethernet network with a built-in web server. View relay status, Sequential Events Recorder (SER), metering information, and settings through easy access within a local network. Web server access requires relay password and is limited to read-only viewing of information.
- Monitoring and Metering
Event reports, SER, circuit breaker contact wear monitor, substation battery monitor, instantaneous and demand metering, and local display panel.
- Reclosing
Programmable four-shot breaker autoreclose with synchronism and voltage check logic for optimal system restoration.