The SIPROTEC 5 Compact Relay, 7SJ81, is an advanced protection device that offers versatile and reliable protection for electrical systems. With configurable settings and cutting-edge technology, it swiftly detects and responds to faults, ensuring system safety and reliability in various applications.
• Default graphical display
•  Control keys / USB front port
• 4 CT, 11BI/9BO or 18BI,14BO
•  4CT,4VT,11BI,9BO or 16BI,11BO
•  12 dual colour LED
•  External RTD box , On board arc card*
•  4-20mA inputs*
•  Serial Protocols RS485 , IEC103,DNP3*
•  Ethernet Protocls :IEC61850 Ed 1Ø & 2, Modbus TCP,DNP3,IEC104*Â
• Cyber secured
•  Web Monitoring
• 2000 Events, 128 FR, up to 128 DRÂ
• 1 to 8 kHz sampling frequency for DR
•  Virtual testing of protection functions
•  PQ basic measurement available
• Feeder protectionÂ
• Backup protection to main protection
•  Load shedding
•  Detection and recording of PQ data
