Customer Outage Minimization—Reduce system and customer impacts by integrating reclosers and controls into your distribution system. Improve reliability by maintaining service to customers who are not on the faulted segment of the feeder.
Distributed Generation Protection—Protect both the utility and the independent power producer with one low-cost device. Apply directional protection and simultaneously use different protection settings for faults in either direction. Protect the system from voltage angle differences by enabling synchronism check before closing.
Load Shedding—Use underfrequency and undervoltage elements to implement basic load-shedding schemes. For more advanced loadshedding schemes, take advantage of the rate-of-change-offrequency (ROCOF) elements to shed load for increasing or decreasing frequency.
Communications-Assisted Protection Schemes—Integrate the SEL-651RA into either Ethernet- or serial based communications networks with standard DNP3 and Modbus protocols or optional IEC 61850. Use communications for local and remote engineering access, SCADA, real-time protection and control, loop restoration, islanding detection, blocking, and fast bus tripping schemes.
Inrush Detection—Detect transformer energization or motor startup and block tripping for inrush conditions with a second-harmonic blocking element. Implement the harmonic detection element to block selected tripping elements until the inrush subsides.
Synchrophasors Improve Distribution Performance—Apply synchrophasors in distribution applications to identify island conditions.
Fault Location—Combine SEL fault indicators with recloser controls to pinpoint the exact location of a fault, even on lateral feeds—something neither product can do on its own. When a fault occurs, the SEL recloser control reports the distance from the recloser to the fault; however, for lines with branches, the recloser control cannot determine on which branch of the line the fault has occurred. By following the line along the tripped fault indicators, the line crew can easily find the fault area.
Low-Energy Analog (LEA) Voltage Inputs
Reduce costs and save space with LEA voltage inputs. Use LEA inputs for three or all six voltage input channels. Many popular reclosers have the sensors built right into the recloser bushings, eliminating the need to hang and wire potential transformers to measure the line voltages, and are supported by the SEL-651RA.
High-Impedance Fault Detection
Detect more high-impedance faults than with traditional protection by using Arc Sense technology.
Additional Inputs and Outputs
Add seven inputs and eight outputs consisting of two 125 Vdc and five 12 V inputs with five Form A outputs and two Form C outputs.
Increase communications flexibility with the addition of the EIA-485 port.
Choose from single-fiber, dual-redundant copper, and dual-redundant fiber Ethernet port upgrade options.
Easily integrate the SEL-651R into your IEC 61850 communications systems.
Upgrade to the 40 Ah extended capacity battery to increase your operation time after a loss of ac power.
Customize your control pushbutton and target LEDs to match your application and workflow with the user-configurable label insert kit.
Program the pushbutton and target LEDs to display as red, amber, or green to meet your application needs and preferences.
Select one of the accessories from our published list, or contact us with your specific needs.
Eaton/Cooper Power Systems: CXE, RE, RVE, RXE, VSA, VSO, VWE, VWVE27, VWVE38X, WE, WVE27, WVE38X, and NOVA Auxiliary Powered
G&W Electric: Viper-G and Viper-S
Hawker Siddeley (Whipp & Bourne): GVR (when equipped with interface module)