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Transformer Protection and Control Relay RET615 IEC
Siemens Reyrolle 7SR51 Overcurrent Protection Relay
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Technical Specifications
Differential protection for two-winding transformers
Voltage protection and measurement functions
Multiple neutral earthing options (high-impedance or low-impedance REF)
Optional arc protection and high-speed outputs
IEC 61850 Editions 1 & 2, HSR/PRP redundancy, GOOSE, IEC 61850-9-2 LE
IEEE 1588 V2 high-accuracy time synchronization
Supports Modbus, DNP3, IEC 60870-5-103
Withdrawable plug-in design for easy installation/testing
Large graphical display and web-HMI
Ready-made configurations for common vector groups
Inputs/Outputs:
• 4 CT + 8 BI + 6 BO
• 4 CT + 13 BI + 8 BO
• 4 CT + 38 BI + 18 BO
• 4 CT + 4 VT + 9 BI + 8 BO
• 4 CT + 4 VT + 14 BI + 10 BO
• 4 CT + 4 VT + 39 BI + 20 BO
Communication: USB front port, RS485, dual RJ45 Ethernet, optional optical Ethernet
Display: 128x128 backlit LCD, with mimic diagram capability
Housing: Size 6 or 12, withdrawable design
Standard IEC 61850 communication, enhanced cybersecurity
Application: Industrial feeders, utilities, and substations
–
Technical specifications
Differential protection for two-winding transformers
Voltage protection and measurement functions
Multiple neutral earthing options (high-impedance or low-impedance REF)
Optional arc protection and high-speed outputs
IEC 61850 Editions 1 & 2, HSR/PRP redundancy, GOOSE, IEC 61850-9-2 LE
IEEE 1588 V2 high-accuracy time synchronization
Supports Modbus, DNP3, IEC 60870-5-103
Withdrawable plug-in design for easy installation/testing
Large graphical display and web-HMI
Ready-made configurations for common vector groups
Inputs/Outputs:
• 4 CT + 8 BI + 6 BO
• 4 CT + 13 BI + 8 BO
• 4 CT + 38 BI + 18 BO
• 4 CT + 4 VT + 9 BI + 8 BO
• 4 CT + 4 VT + 14 BI + 10 BO
• 4 CT + 4 VT + 39 BI + 20 BO
Communication: USB front port, RS485, dual RJ45 Ethernet, optional optical Ethernet
Display: 128x128 backlit LCD, with mimic diagram capability
Housing: Size 6 or 12, withdrawable design
Standard IEC 61850 communication, enhanced cybersecurity
Application: Industrial feeders, utilities, and substations
–
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