Siemens Siprotec 4 SIPROTEC 7UT613 Protection Relay
The SIPROTEC 7UT613 is a multifunctional differential protection relay designed for fast and selective fault clearing in transformers, generators, motors, short lines, and busbars. It provides complete transformer and machine protection with advanced automation, communication, and monitoring capabilities
Technical Specifications
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
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
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