Comprehensive and Adaptable Protection Functions

The device offers an extensive protection suite, covering phase-to-phase and ground overcurrent protection (directional and non-directional), zero-sequence overvoltage and undervoltage protection, thermal overload protection, and breaker failure protection. It also supports automatic reclosing.
It is compatible with a wide range of power system grounding modes, including ungrounded and resonant-grounded networks, and meets the protection requirements of medium-capacity three-phase induction motors and shunt capacitor banks for reactive power compensation. In addition, the built-in short-circuit fault location function enables rapid pinpointing of fault points in various grid structures.

High-Precision Measurement and Intelligent Control

The device provides accurate measurement of phase currents, line voltages, zero-sequence current, frequency, active/reactive power, and energy. It also supports measurement of voltage and current THD and up to the 13th harmonic.
Supporting both local and remote control of circuit breakers and disconnectors, it enables real-time equipment status display and interlocking indication. With user-editable MIMIC diagrams, it presents system topology and device states in a highly intuitive manner, enhancing operational convenience and clarity.

Advanced Automation and Condition Monitoring

A rich set of PLC programmable logic functions allows flexible implementation of automation schemes and sequential control, significantly reducing hard-wired interlocks between devices.
The device integrates comprehensive condition monitoring functions, including current/voltage circuit supervision, breaker operation counting, cumulative contact wear estimation, trip circuit monitoring, and breaker travel-time analysis. It also supports maintenance-related reminders, helping maintenance teams plan and execute preventive maintenance efficiently.