Compatible Reclosers
The SEL-651RA is compatible with reclosers using the 14-pin control cable interface. The SEL-651RA comes in a lightweight, corrosion-resistant painted aluminum cabinet with the 14-pin control cable connector mounted and ready to connect to your recloser. View the table of compatible reclosers.

Recloser Options
The ordering options for the SEL-651RA provide the flexibility to support common options found in popular 14-pin reclosers, including the integral low-energy analog (LEA) voltage sensors, recloser power cables, and control cables. You can configure your SEL-651RA for direct plug-and-work replacement of popular recloser controls from other manufacturers while adding the advanced recloser control functionality found only in the SEL recloser controls.

Reclosing Control
Apply four-shot reclosing with sequence coordination, synchronism check, and voltage check. When load levels vary from phase to phase, set trip levels independently for each phase.

Relay- and Recloser-Compatible Time-Overcurrent Protection
Apply 10 U.S. (IEEE) and IEC curves and 38 traditional curves, each customizable with time-adder, vertical-multiplier, and minimum-response-time functions to coordinate your feeder protection.

Point of Common Coupling
Interconnect distributed energy resources safely and reliably with IEEE 1547-2018 protection and synchronization and innovative SEL fast islanding detection.

Second-Harmonic Blocking
Detect transformer energization with the second-harmonic blocking elements. You can use the output of the harmonic detection elements to block selected tripping elements until the inrush conditions subside.

Arc Sense Technology
Detect downed conductors and high-impedance faults with the optional Arc Sense technology. Learn more about this exciting technology.

Six Voltage Inputs
With the option for six voltage input channels, make better switching decisions and execute more complex Automatic Network Reconfiguration by knowing the voltage on both sides of the recloser for each phase.

Optional LEA Inputs
Reduce costs and save space with three or six LEA inputs. The SEL-651RA supports several versions of LEAs, including those that are integral to popular reclosers as well as externally installed.

Configurable Power Elements
Determine the real or reactive power flow direction and magnitude. You can apply the elements at system intertie points, capacitor bank installations, and similar locations.

Frequency and Voltage Protection
Provide advanced load shedding or network decoupling with six levels of frequency elements and four rate-of-change-of-frequency elements along with under-/overvoltage protection.

Full-Function Clock Elements
Vary logic according to the time of year/week/day to accommodate variations in the load type for seasonal or other predictable load changes.

Eight Settings Groups
Use the eight settings groups to easily configure multiple applications in one settings file and to fit operational situations.

Simple Configuration Tools
Quickly commission the SEL-651RA by applying just the settings you need using acSELerator QuickSet SEL-5030 Software Design Templates. Easy-to-use Design Templates create a simplified settings interface and can be customized for your needs. You can store templates on the recloser control for quick access when making settings changes. Familiar “EZ” recloser control settings further simplify and speed commissioning for basic applications.

IEC 61850 Communications Protocol
Apply optional IEC 61850 communications for guaranteed performance of substation automation and control. You can streamline configurations of IEC 61850-enabled relays with acSELerator Architect SEL-5032 Software.

Mirrored Bits Communications Technology
Provide fast and reliable relay-to-relay communication for advanced communications-assisted protection, network reconfiguration, pilot protection, and restoration schemes.

Modbus, DNP3, and ASCII Protocols
Integrate the SEL-651RA into new or existing networks. SCADA links, local human-machine interfaces (HMIs), and dial-in modems can access important relay data with these popular protocols.

Simple Network Time Protocol (SNTP)
Simplify wiring and installation by receiving a time signal over existing Ethernet networks. SNTP makes a good backup to more accurate IRIG-B time synchronization. The 5 ms accuracy is adequate for basic time synchronization.

Built-In Web Server
Access basic relay information on a standard Ethernet network with the built-in web server. You can view the relay status, Sequential Events Recorder (SER) data, metering information, and settings for easy access within a local network. Web server access requires a relay password and is limited to read-only viewing of information or to secure remote firmware upgrades requiring an additional login level.

PRP
PRP is an Ethernet-based redundancy protocol that provides seamless network failover for systems such as electrical substations. It is available as a standard option on SEL-651RA recloser controls with dual-Ethernet copper or dual-Ethernet fiber ports.

Fault Location
Take advantage of accurate distance-to-fault measurements using the impedance-based fault locator.

Per-Phase and Max-Phase Recloser Wear Monitor
Monitor breaker or recloser contact wear for each phase to assist in efficient maintenance planning and troubleshooting.

Metering and Power Quality (PQ) Monitoring
The control reports fundamental, power factor, rms, energy, max./min., and instantaneous/peak demand metering data. You can simplify PQ analysis using harmonic metering to the 16th harmonic as well as PQ analysis and monitoring records for voltage sag, swell, and interruption (VSSI) and load profile reports.

Event Reports
View the latest 1,000 event records with the user-defined Sequential Event Recorder (SER) to aid in testing and troubleshooting relay settings, simplify postfault analysis, and help improve your understanding of protection schemes. You can capture event oscillography data in both Compressed ASCII and COMTRADE file formats. Event reports can record up to 60 cycles with a user-defined prefault duration and triggering. 

acSELerator Team SEL-5045 Software can automatically gather relay event reports on your PC and manage them with a database. You can use synchroWAVe Event 2015 Software to display oscillograms and vector diagrams to analyze event reports.

Communications Ports
The SEL-651RA includes three EIA-232 serial ports, one EIA-485 port, two 10/100BASE-T Ethernet ports, one USB port, and one BNC IRIG-B port.

Display and Operator Controls
A large front-panel display and programmable operator control interface pushbuttons allow easy interaction. In addition to the navigation pushbuttons, the SEL-651RA includes 12 programmable pushbuttons. The pushbuttons are preprogrammed and labeled with popular recloser control switch functions, including a “Lock” function to prevent inadvertent operation. The pushbuttons can be reprogrammed and relabeled to meet your unique application requirements.

Contact Inputs and Outputs
In addition to the recloser interface, the standard configuration includes two Form C contact outputs and two contact inputs. You can use these contacts for alarms or control points.

Secondary Voltage Input
The SEL-651RA includes one traditional 300 Vac potential transformer. You can use phantom phasing to emulate voltage on additional channels or can order one of the options with six input channels.

Current Inputs
Each phase is monitored by a 1 A current transformer input. The neutral current is monitored by a 0.2 A sensitive earth fault (SEF) current transformer input.

Enclosure
The SEL-651RA includes a lightweight, corrosion-resistant painted aluminum cabinet equipped with a three-point latch. The enclosure provides space to install radios, modems, switches, security gateways, and other equipment that allow you to integrate the control into your distribution automation system.

The enclosure achieves an IP45 rating from the IEC 60529 ”Degrees of protection provided by enclosures (IP Code)” standard and is also tested to meet the Type 3RX category from the NEMA 250 “Enclosures for Electrical Equipment (1,000 Volts Maximum)” standard.

Advanced 12 Vdc Battery Charging and Monitoring System
The 12 Vdc battery charger is continually monitored, and the battery health is tested daily to ensure backup power availability. A 16 Ah battery is standard with the SEL-651RA to power the control and accessories, including security devices, radios, modems, and other communications equipment in the event that ac power is lost.