Transformer Protection and Monitoring Features

Standard Feature Model Optionƒ This function may be created using relay, device word bits, analog quantities, and timers.
FeaturesSEL-487ESEL-387ESEL-387SEL-387ASEL-787SEL-787-2/-3/-4SEL-587SEL-2414
Applications
Breaker Failure Protectionƒƒƒƒƒ
Transformer and Machine Current Differential
Low-Impedance Bus Differential
Underfrequency Load Sheddingƒ
Undervoltage Load Sheddingƒ
Three-Phase Current Inputs534222, 3, or 42
Three-Phase Voltage Inputs211+1+1+
Protection Elements
24 Overexcitation (Volts/Hertz)
25 Synchronism Check
27I Inverse Time Undervoltage (Phase, Phase to Phase, Sequential, Vsync)
27/59 Under-/Overvoltage
32 Directional Power
46 Current Unbalance
49 Equipment Thermal Monitoring
50FO Flashover Protectionƒƒƒƒ
50 (N,G) Overcurrent (Neutral, Ground)
50P Phase Overcurrent
50Q Negative-Sequence Overcurrent
51 (N,G) Time Overcurrent (Neutral, Ground)
51P Phase Time Overcurrent
51Q Negative-Sequence Time Overcurrent
67 (P,G,Q) Directional Overcurrent (Phase, Ground, Negative Sequence)
81 Under-/Overfrequency
81R Rate-of-Change-of-Frequencyƒ
87 Phase Differential
REF Restricted Earth Fault
Instrumentation and Control
SELogic Control Equations
Voltage Check on Closingƒƒƒ
Transformer Cooling Fan Controlƒƒƒ
Nonvolatile Latch Control Switches
SELogic Remote Control Switches
SELogic Local Control Switches
Analog Control Variables
Display Points
Multiple Settings Groups
Substation Battery Monitorƒ
Breaker Wear Monitor
Event Report (Multicycle Data)
Sequential Events Recorder
Instantaneous Meter
Demand Meter
Load and Temperature Profile Report
Resistance Temperature Detector (RTD) Inputs
Built-In Web Server
IEEE C37.118 Synchrophasors
EtherNet/IP
IEC 61850
IEC 61850 Edition 2
Simple Network Time Protocol (SNTP)
Parallel Redundancy Protocol (PRP)
IEEE 1588 Precision Time Protocol Version 2 (PTPv2)
Time-Domain Link (TiDL) Technology
Through-Fault Monitor
Thermal Model/SEL-2600 RTD Module Communications
Miscellaneous Features
Spanish Language Support
Connectorized (Quick Disconnect) Available