SEL-351R Recloser Control

The SEL-351R Recloser Control, derived from SEL’s premiere distribution relay, the SEL-351 Protection System, combines traditional recloser control functions with technologically advanced SEL relaying features, such as phase and ground directional elements, multilevel under- and overfrequency trip and control, and high-accuracy metering.

Compatibility with standard control cable and mounting dimensions makes retrofitting fast and convenient while the simple settings and large operator controls make the SEL-351R very user-friendly.

Functional Overview

25	Synchronism Check
27	Undervoltage
50N	Neutral Overcurrent
50	(P, G, Q) Overcurrent (Phase, Ground, Neg. Seq.)
51N	Neutral Time-Overcurrent
51	(P, G, Q) Time-Overcurrent (Phase, Ground, Neg. Seq.)
59	Overvoltage
59	(P, G, Q) Overvoltage (Phase, Ground, Neg. Seq.)
67N	Directional Neutral Overcurrent
67	(P, G, Q) Directional Overcurrent (Phase, Ground, Neg. Seq.)
79	Autoreclosing
81	(O, U) Over-/Underfrequency
85	RIO SEL MIRRORED BITS Communications
DFR	Event Reports
HMI	Operator Interface
LGC	SELOGIC Control Equations
MET	High-Accuracy Metering
SER	Sequential Events Recorder
BRM	Breaker Wear Monitor
LDP	Load Data Profiling
LOC	Fault Locator

Front- and Rear-Panel Diagrams


Front		Side

Plug-In Recloser Control Compatibility

Upgrade existing recloser installations with cost-saving protection, automation, and control features in the SEL-351R Recloser Control, a plug-compatible replacement for Cooper Kyle® recloser controls. Use standard control cables for easy installation. The SEL-351R is independently certified to IEEE C37.60-2003 recloser standards.

“EZ” Settings for Convenient Setup

Expedite commissioning with familiar “EZ” recloser control settings that enable only the settings you need.

Advanced 24 Vdc Battery-Charging and -Monitoring System

Monitor and test the 24 Vdc battery with the 120 Vac battery-charging system. Maximize battery backup duration with the automatic sleep and local wakeup function. There is also a 12 Vdc supply for powering modems and radio communications equipment.

Lightweight Cabinet

Reduce maintenance and prevent corrosion with the lightweight, easy-to-install, painted aluminum cabinet.

Comparison

351R

651R

APPLICATIONS

Distribution Feeder Protection	•	•
Breaker Failure Protection	f	f
Generator Intertie Protection	•	•
Recloser Control	•	•
Synchronism Check	+	•
Underfrequency Load Shedding	•	•
Undervoltage Load Shedding	•	•

PROTECTION

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

INSTRUMENTATION AND CONTROL

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		•
Ethernet		•
IEC 61850		+
Simple Time Network Protocol (SNTP)		•
Harmonic Metering		•
RMS Metering		•

•	Standard Feature
+	Model Option
f	This function may be created using settings