A.16
SEL-751 Relay Instruction Manual Date Code 20170927
Firmware, ICD, and Manual Versions
Instruction Manual
Index
➤
Updated for new features.
Command Summary
➤
Updated the command summary lists.
20160930
Preface
➤
Updated the General Safety Marks table in Safety Marks.
➤ Added Trademarks.
Section 1
➤
Updated Output Contacts in Specifications.
Section 4
➤
Updated Example 4.4: VNOM Setting Calculation for Standard Voltage Inputs in VNOM Range Check.
➤ Updated Table 4.25: Overcurrent Elements Controlled by Level Direction Settings DIR1 Through DIR4
(Corresponding Overcurrent Element Figure Numbers in Parentheses).
➤ Updated High-Impedance Fault Detection With Arc Sense Technology for surface conductivity and current
requirements information and added Figure 4.54: High-Impedance Fault Current Levels Depend on Ground
Surface Types.
➤ Added a note for the HIFER setting (Table 4.28: High-Impedance Fault (HIF) Detection Settings) regarding
the use of edge-triggered Relay Word bits in the HIFER SEL
OGIC control equation.
➤ Updated Figure 4.77: 81R Fast Rate-of-Change-of-Frequency Logic for the difference in Hz.
Section 6
➤
Corrected SALARM Relay Word bit in Enter Settings.
Section 7
➤
Updated ETH Command and Figure 7.23: Ethernet Port (PORT 1) Status Report When
NETMODE := FAILOVER, E61850 := Y, and EGSE := Y for relay responses based on different Ethernet
configurations and different NETMODE settings.
➤ Added a note regarding older CPU cards in relays being upgraded to firmware versions R112 or higher and the
GOOSE processing performance functionality to ETH Command, MAC Command, and Table A.1: Firmware
Revision History.
Section 9
➤
Updated High-Impedance Fault Event Summary for HIF1_x and HIF2_x Relay Word bits and load reduction.
➤ Updated Table 9.7: HIF Event Phases for Phase C conditions.
Appendix A
➤
Updated for firmware version R112-V1.
➤ Updated the R112-V0 firmware revision history to include the GOOSE performance enhancement.
Appendix K
➤
Updated Table K.2: Relay Word Bit Definitions for the SEL-751 Relay for AFS1DIAG through AFS4DIAG.
20151112
Preface
➤
Updated Wire Sizes and Insulation table for RTD connections.
Section 1
➤
Updated Standard Protection Features for Line/Cable Thermal Elements per IEC 60255-149 (49), Second and
Fifth Harmonic Blocking Logic, Vector Shift Elements for Islanding Detection (78VS), Inverse-Time Over- and
Undervoltage (59I/27I).
➤ Updated Models, Options, and Accessories for 14 DI, 8 AFDI cards, IEC 60870-5-03 communications options
and the Spanish language option.
➤ Updated Specifications for I
NOM
= 200 mA neutral CT, Low-Energy Analog (LEA) Voltage Inputs, IEC
Thermal Element (49IEC), Inverse-Time Undervoltage (27I), Inverse-Time Overvoltage (59I),
Vector Shift (78VS).
Section 2
➤
Added terminal designations for 8 AFDI and 14 DI cards and updated the text for the Current/Voltage Card
Option (4 ACI/3 AVI) and Voltage/Arc-Flash Detection Inputs Card Option (2 AVI /4 AFDI).
➤ Added rear-panel connections for relays with the new options.
➤ Added new section Ordering Arc-Flash Fiber Sensors.
➤ Updated ac/dc control connection diagrams.
Table A.8 Instruction Manual Revision History (Sheet 4 of 9)
Revision Date Summary of Revisions
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