Basic Features

• Has flexible protection functions as it allows users to create up to 20 additional protection functions
• Rate of change of frequency function or a reverse power function can be created
• Provides control of circuit-breaker and additional primary switching devices (e.g. grounding switches, transfer switches, and isolating switches)
• Automation or PLC logic functionality is also implemented
• Integrated programmable logic (CFC) allows users to add own functions (e.g. for the automation of switchgear (including interlocking, transfer, and load shedding schemes))
• Allows user-defined messages to be generated
• Device and communication firmware can be upgraded via Ethernet
• Key data (e.g. event logs, trip logs, fault records and statistics documents) required to operate modern substations are stored in the relay for users or operators
• Provides all the functions for backup protection for transformer differential protection
• Inrush suppression effectively prevents unwanted trips that can be caused by inrush currents
• High-impedance restricted ground fault protection detects short-circuits and insulation faults on the transformer