Project Description

SEL-651R Advanced Recloser Control

SEL-651R Advanced Recloser Control

Apply the easy-to-use SEL-651R Advanced Recloser Control for Automatic Network Reconfiguration, three-phase and single-phase tripping, and all your distribution automation needs. The SEL-651R is compatible with most manufacturers’ reclosers and includes directional power and directional overcurrent elements for advanced applications. Six voltage inputs provide source- and load-side voltage sensing, ensuring safe and secure alternate source logic.

The SEL-651R can also be integrated into Ethernet or serial-based communications networks with standard DNP3 and Modbus® protocols or optional IEC 61850. Speed event analysis, identify phasing, and optimize volt/VAR control with included synchrophasors. Improve feeder loading by using high-accuracy metering functions and harmonic control. Easily power accessories with a 40 W, 12 Vdc auxiliary power supply for applications requiring additional power, such as radios. The SEL-651R is certified to IEEE C37.60 standards and is a plug-compatible replacement for 14-pin reclosers.

Functional Overview

SEL-651R Functional Overview
16SEC Access Security (Serial, Ethernet)
25 Synchronism Check
27 Undervoltage
32 Directional Power
50G Best Choice Ground
50N Neutral Overcurrent
50 (P,G,Q) Overcurrent (Phase, Ground, Neg. Seq.)
51 (P,G,Q) Time-Overcurrent (Phase, Ground, Neg. Seq.)
51N Neutral Time-Overcurrent
59 (P,G,Q) Overvoltage (Phase, Ground, Neg. Seq.)
67 (P,G,Q) Directional Overcurrent (Phase, Ground, Neg. Seq.)
79 Autoreclosing
81 (O,U) Over-/Underfrequency
81R Rate-of-Change-of-Frequency
85 SEL Mirrored Bits Communications
DFR Event Reports
HIZ SEL Arc Sense Technology (AST)
HMI Operator Interface
LGC SELogic Control Equations
MET High-Accuracy Metering
PMU Synchrophasors
PQM Voltage Sag, Swell, and Interruption
SER Sequential Events Recorder
BRM Breaker Wear Monitor
HBL2 Second-Harmonic Blocking
LDP Load Data Profiling
LOC Fault Locator


Front- and Rear-Panel Diagrams

SEL-651R Front Panel SEL-651R Rear Panel
Front Rear


High-Impedance Fault Detection

SEL Arc Sense™ technology detects more high-impedance faults than conventional protection for more reliable operation of distribution systems.

Second Harmonic Blocking

Secures the recloser control during transformer energization.

Multi-Recloser Interface

Support a number of reclosers from different manufacturers with one common control cable interface.


Gather power system information and monitor wide-area performance with IEEE C37.118 synchrophasors.

Rate-of-Change-of-Frequency Elements

Detect rapid frequency changes to initiate load shedding or network decoupling.

Ethernet Communications

Provide DNP, Modbus®, IEC 61850, FTP, and SNTP capabilities using single copper or optional dual copper or fiber-optic Ethernet ports. Built-in web server makes firmware upgrades over Ethernet quick and secure.

Communications Flexibility

Order the SEL-651R-2 with as many as four serial ports (three EIA-232 and one EIA-485), two Ethernet ports (copper or fiber-optic), and a USB port. The front-panel USB port retrieves events, settings, and templates faster.

Digitally Signed Firmware Upgrade

Upload digitally signed firmware over Ethernet or serial connection. Secure algorithms guarantee the validity of the firmware file.

Increased Event Data and Faster Sampling Rate

See more prefault and postfault data with 60-cycle-length event reports. Gain better resolution with 128 samples per cycle analog data.

COMTRADE Event Reports

Capture standard and high-impedance event reports in COMTRADE standard file format.



351R 651R
Distribution Feeder Protection
Breaker Failure Protection f f
Generator Intertie Protection
Recloser Control
Synchronism Check +
Underfrequency Load Shedding
Undervoltage Load Shedding
27/59 Under-/Overvoltage
32 Directional Power Elements
50 (P,N,G,Q) Overcurrent Element (Phase, Neutral, Ground, Neg. Seq.)
51 (P,N,G,Q) Time-Overcurrent Element (Phase, Neutral, Ground, Neg. Seq.)
67 (P,N,Q) Directional Overcurrent (Phase, Neutral, Neg. Seq.)
81 Over-/Underfrequency
Separate Neutral Overcurrent
Load-Encroachment Supervision
Mirrored Bits Communications
Sensitive Earth Fault Protection
Directional Sensitive Earth Fault Protection
Pilot Protection Logic f
Rate-of-Change-of-Frequency (df/dt)
Harmonic Blocking
Arc Sense Technology (AST) High-Impedance Fault Detection +
Phantom Phase Voltage
Current/Voltage Channels 4/4 4/4
79 Automatic Reclosing
Fault Locating
SELogic Control Equations With Remote Control Switches
SELogic Counters +
Voltage Check on Closing
Operator Control Pushbuttons
SELogic Nonvolatile Latch
Nonvolatile Local Control Switches
Display Points
Multiple Settings Groups
Breaker/Recloser Wear Monitor
Trip Coil Monitor f f
Voltage Sag, Swell, and Interruption (VSSI)
Load/Signal Profile Recorder +
Sequential Events Recorder
Demand Meter
DNP3 Level 2 Outstation
Modbus Outstation
IEEE C37.118 Synchrophasors
IEC 61850 +
Simple Time Network Protocol (SNTP)
Harmonic Metering
RMS Metering
Standard Feature
+ Model Option
f This function may be created using settings

Product Literature