Basic Features

• 1 differential protection function (standard or auto transformer) with additional stabilization; up to 2 restricted ground-fault protection functions
• Transformer differential protection for two-winding transformers with versatile, additional protection functions
• Transformer differential protection for phase-angle regulating transformers of the single core type
• Universal usability of the permissible measuring points
• Applicable from average to extra-high voltage
• Protects standard power transformers, auto transformers, short lines, cables, longitudinal and shunt reactors, and motors
• Increased sensitivity with near-neutral-point ground faults through a separate restricted ground-fault protection
• Able to flexibly adapt to the transformer vector group
• Controls closing and overexcitation processes
• Safe behavior in case of current-transformer saturation with different degrees of saturation
• Adaptive adaptation of the operate curve to the transformer tap position
• Arc protection
• Up to 2 optional pluggable communication modules, usable for different and redundant protocols (IEC 61850-8-1,IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET I/O)
• Reliable data transmission via PRP and HSR redundancy protocols
• Extensive cybersecurity functionality (e.g. role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X)
• Provides simple, quick and secure access to the device via a standard Web browser to display all information and diagnostic data, as well as vector diagrams, single-line diagrams, and device display pages
• Time synchronization using IEEE 1588
• Enables powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)