The voltage and frequency functionality is supplemented by data storage, instrumentation, user configurable logic and data communication features. A menu based user-friendly interface provides local access to relay settings, instruments and operational data. The fascia also benefits from 9 user configurable, tri-coloured LEDs and a USB port for PC access.

The key functions provided include 27/59 -under and overvoltage, 81 -under and over frequency, 78 -Voltage vector shift and 81R -Rate of change of frequency.

Relays have three voltage inputs, six binary inputs and eight binary outputs and are housed in a size E4 case. Programmable logic is provided to allow the optimal configuration of relay functionality. A rear electrical RS485 port is provided for SCADA connection using either IEC60870-5-103, DNP3.0 or MODBUS RTU protocol.