Siemens Reyrolle 7SR57 Motor Protection Numerical Relay
The Siemens Reyrolle 7SR57 motor protection relay offers a wide range of protection functions with IEC 61850 Ethernet communication. Its power supply and binary inputs cover the full operating range with configurable thresholds, minimizing product variants. The relay features a user-friendly interface with a large LCD, tactile buttons, and programmable LEDs
Technical Specifications
Inputs/Outputs:
4 CT + 8 BI + 6 BO
4 CT + 13 BI + 8 BO
4 CT + 4 VT + 9 BI + 8 BO
4 CT + 4 VT + 19 BI + 12 BO
Communication: Front USB, rear RS485, 2xRJ45, optional optical Ethernet
Housing: Size 6 or 12, drawable design, backlit 128x128 LCD with graphical/text display
Functions: Overcurrent, undervoltage, thermal protection, phase monitoring, arc flash, breaker supervision, directional overcurrent, frequency protection, and more
Monitoring: Current, voltage, frequency, power, energy, fault data, motor start logs
Protocols: IEC 60870-5-103, MODBUS-RTU, DNP3, IEC 61850
Benefits: Compact design, low life-cycle cost, reliable operation, IEC 61850 compliance, tri-color LEDs, user-selectable languages
4 CT + 8 BI + 6 BO
4 CT + 13 BI + 8 BO
4 CT + 4 VT + 9 BI + 8 BO
4 CT + 4 VT + 19 BI + 12 BO
Communication: Front USB, rear RS485, 2xRJ45, optional optical Ethernet
Housing: Size 6 or 12, drawable design, backlit 128x128 LCD with graphical/text display
Functions: Overcurrent, undervoltage, thermal protection, phase monitoring, arc flash, breaker supervision, directional overcurrent, frequency protection, and more
Monitoring: Current, voltage, frequency, power, energy, fault data, motor start logs
Protocols: IEC 60870-5-103, MODBUS-RTU, DNP3, IEC 61850
Benefits: Compact design, low life-cycle cost, reliable operation, IEC 61850 compliance, tri-color LEDs, user-selectable languages
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