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

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

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.

Synchrophasors

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.