Over-current protection relay Reyrolle 7SR45

phaseearth-leakageRS485

The Reyrolle 7SR45 Argus self-powered/dual powered non-directional overcurrent and earth fault relay is developed using the latest generation of hardware technology and is available in multiple variants depending on the current transformer (CT), binary input/binary output, power supply, and communication configuration. Features The Reyrolle 7SR45 numeric relay provides both definite time and inverse time overcurrent and earth fault protection functions ensuring sensitivity with a minimum operate setting of 0.2 ⋅ I rated for phase overcurrent protection. The relay is CT powered with an option for connection to an external auxiliary supply to provide additional security and communications port for connecting to SCADA. The compact non draw-out design provides front fascia to the navigation keys, LCD, and front USB port for ease of use •Self-powered / auxiliary powered •10 fault records •100 event records •Password protection •Self-monitoring •Overcurrent protection functions (instantaneous and delayed) •Relay integration via Reydisp Evolution PC Software •Sensitivity of 20% nominal current •Serial interface Hardware •4 current transformer with 1 A or 5 A Inputs •Up to 4 binary Inputs and 4 binary outputs •2 latched binary outputs, 1 changeover and 1 normally open •1 pulsed output •2 case options for mounting in various RMU's User Interface •16 character x 2 line backlit LCD •Menu navigation keys •9 predetermined LED’s for easy use •Mechanical flag •Front USB interface •Optional rear RS485 communication port