Siemens SIPROTEC 7SJ64 Protection Relay – 4xI 4xV, text or graphical display, directional
The Siemens SIPROTEC 7SJ64 is a high-performance protection relay designed for overcurrent and motor protection in industrial and utility applications. Equipped with 4xI and 4xV inputs, it supports directional overcurrent protection and features a text or graphical display for intuitive monitoring and configuration. Ideal for medium-voltage systems, the relay ensures fast and accurate tripping during faults, advanced motor protection (start/stop supervision, locked rotor, load jam), and seamless integration into modern substation automation systems
Technical Specifications
Protection Functions:
Directional overcurrent protection
Motor protection: start/stop supervision, locked rotor, load jam
Phase and neutral overcurrent protection
Hardware:
4 current transformers, 4 voltage transformers
7 to 48 binary inputs
5 to 21 output relays
Up to 4 high-duty relays
Text or graphical display
Communication Interfaces:
System port: IEC 61850, PROFINET, DNP3 TCP, IEC 60870-5-103, PROFIBUS-DP, DNP 3.0, MODBUS RTU
Service port: DIGSI 4, Modem, Thermobox
Additional port: DIGSI 4, Thermobox
Time synchronization via IRIG B / DCF77
Directional overcurrent protection
Motor protection: start/stop supervision, locked rotor, load jam
Phase and neutral overcurrent protection
Hardware:
4 current transformers, 4 voltage transformers
7 to 48 binary inputs
5 to 21 output relays
Up to 4 high-duty relays
Text or graphical display
Communication Interfaces:
System port: IEC 61850, PROFINET, DNP3 TCP, IEC 60870-5-103, PROFIBUS-DP, DNP 3.0, MODBUS RTU
Service port: DIGSI 4, Modem, Thermobox
Additional port: DIGSI 4, Thermobox
Time synchronization via IRIG B / DCF77
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