Siemens Reyrolle 7SR51 Overcurrent Protection Relay
The Siemens Reyrolle 7SR51 is a high-performance numerical relay engineered for overcurrent and earth fault protection in power distribution networks. Built with Siemens’ advanced technology, it offers dependable operation, enhanced safety, and seamless system integration
Technical Specifications
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
• 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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