Functions :

DIGSI 5 permits all functions to be configured and combined as required.

• Motor protection functions: Startup time monitoring, thermal overload protection for stator and rotor, restart inhibit, unbalanced-load protection, load-jam protection
• Stator and bearing temperature monitoring via temperature sensors with optional temperature inputs or with external RTD unit.
• Sensitive ground-fault protection (non-directional, directional) to detect stator ground faults
• Directional and non-directional overcurrent protection (short- circuit protection) with additional functions
• Detection of ground faults of any type in compensated or isolated electrical power systems using the following functions: 3I0>, V0>, transient ground fault, cos φ, sin φ, harmonic, dir. Detection of intermittent ground faults and admittance
• Ground fault detection using the pulse detection method
• Overvoltage and undervoltage protection
• Arc protection
• Power protection, configurable as active or reactive power protection
• Detection of current and voltage signals up to the 50th harmonic with high accuracy for selected protection functions (such as thermal overload protection) and operational measured values
• Control, synchrocheck and switchgear interlocking protection
• PQ-Basic: voltage unbalance; voltage changes: overvoltage, dip, interruption; TDD, THD and Harmonics
• Graphical logic editor to create powerful automation functions in the device
• Single line representation in small or large display
• Integrated electrical Ethernet RJ45 for DIGSI 5 and IEC 61850 (reporting and GOOSE)
• 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 IO)
• Reliable data transmission via PRP and HSR redundancy protocols
• Extensive cybersecurity functionality, such as role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X
• 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 and device display pages
• Secure serial protection data communication, also over great distances and all available physical media (optical fiber, two-wire connections and communication networks)
• Capturing operational measured variables and protection function measured values for the evaluation of the systems, to support commissioning, and to analyze faults
• Integrated RTD inputs (optional) for thermal motor monitoring
• Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol
• Powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
• Auxiliary functions for simple tests and commissioning.