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Over-current protection relay 7SR51
thermalthree-phaseprogrammable

over-current protection relay
over-current protection relay
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Characteristics

Measured/monitored value
thermal, over-current
Network
three-phase
Other characteristics
programmable, digital, configurable, IEC, compact, Ethernet, RS485, with integrated transformer, for electric motors, for generators, for feeder

Description

The 7SR511 overcurrent device includes a wide range of protection functions and IEC 61850 Ethernet communications as standard. To further minimize the product variants the power supply and the binary inputs cover the full operating range with configurable binary input thresholds. Features The Reyrolle 5 is designed for the electricity networks of the future with enhanced communications and cybersecurity while maintaining a user-friendly interface and easy product management. The Reyrolle 7SR511 overcurrent device includes a wide range of protection functions and IEC 61850 Ethernet communications as standard. To further minimize the product variants the power supply and the binary inputs cover the full operating range with configurable binary input thresholds. The large LCD, tactile pushbuttons and programmable LEDs provide a user-friendly product interface and the relay element is withdrawable for easy replacement. Inputs and 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 Standard front USB port (for configuration using Reydisp PC based software tool) rear RS485, 2 x RJ45 electrical ports or optional optical ethernet connections. Housing Size 6 or 12 with drawable design. Display Backlit 128 x 128 LCD with text and graphical display capabilities suitable for single line mimic diagrams. Functions Standard functionality •37/ 37G undercurrent protection •46 Negative sequence overcurrent protection •46BC Broken conductor detection •49 Thermal overload protection •50/ 50N/ 50G Instantaneous overcurrent

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