Differential protection for 2–3 winding transformers (3-/1-phase)
Differential protection for motors, generators, and short lines
Busbar differential protection (up to 9 feeders)
Phase- and earth-fault overcurrent protection
Overload protection with temperature monitoring
Negative-sequence and breaker failure protection
Restricted earth-fault (REF) protection (low/high impedance)
Over/undervoltage, over/underfrequency, and overexcitation protection
Reverse/forward power protection
Fuse failure monitoring
Integrated thermal monitoring via thermo-boxes (hot-spot calculation)
Programmable logic (CFC) for automation/interlocking
Communication: IEC 61850, IEC 60870-5-103, PROFIBUS-FMS/DP, MODBUS, DNP 3.0
Time sync via IRIG-B/DCF 77
DIGSI 4 compatibility for settings, monitoring, and control