ENERGY AUTOMATION PRODUCTS The Reyrolle 7SR51 is an advanced overcurrent protection device designed to provide comprehensive protection and control solutions for electrical power systems. It 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. IEC 61850 with HSR, PRP and RSTP operation for increased availability Compact design and low product life-cycle cost Reliable operation due to powerful, proven protection algorithms • Simple product ordering • Combined 1 A and 5 A current transformer inputs • 28 programmable tri-color LEDs for clear indications • User selectable languages: English, French, German, Portuguese, Spanish, Turkish, Italian • Conformal coating ordering option

Standard Functionality • 37/37G Undercurrent protection - phase/earth • 46 Negative sequence overcurrent protection • 46BC Broken conductor detection • 49 Thermal overload protection • 49TS Temperature sensor supervision • 50/50G/50N Instantaneous overcurrent/earth fault • 50BF Circuit-breaker failure protection - 3-pole • 50GHS High speed earth fault - measured • 50GI Intermittent earth fault • 50GS Instantaneous sensitive earth fault - measured • 50HS High speed overcurrent - phase • 50SOTF Switch onto fault • 51/51G/51N Time delayed overcurrent/earth fault • 51CL Cold load overcurrent - phase...