A.18
SEL-751 Relay Instruction Manual Date Code 20170927
Firmware, ICD, and Manual Versions
Instruction Manual
20150410
Section 1
➤
Added the applied current at which the burden is measured for I
NOM
= 1 A, 5 A in Specifications.
➤ Updated Processing Specifications and Oscillography.
➤ Updated the low end of the setting ranges for all overcurrent elements and the high end of the setting ranges for
the inverse-time overcurrent elements in Specifications.
➤ Updated Synchrophasor Accuracy specifications.
Section 2
➤
Added a note on CT circuits to applicable current card descriptions.
Section 4
➤
Updated notes for Figure 4.1: Instantaneous Overcurrent Element Logic.
➤ Added a note for Time-Overcurrent Curves.
➤ Updated Zero-Sequence Maximum Torque Angle.
➤ Updated Reclose Logic supervision, adding C1, C2, C3, and C4 choices to the E79 setting.
Section 5
➤
Updated Load Profiling.
Setting Sheets
➤
Updated the setting ranges for the overcurrent elements.
Section 7
➤
Updated PULSE Command.
➤ Updated AFT Command (Arc-Flash Detection Channels Self-Test).
Section 10
➤
Added a note on CT circuits.
➤ Updated Table 10.8: Relay Self-Tests.
Appendix A
➤
Updated for firmware version R110.
➤ Added ICD File section with Table A.4: SEL-751 ICD File Revision History.
Appendix H
➤
Updated Table H.2: Synchrophasor Order in Data Stream (Voltages and Currents).
➤ Added Table H.9: TQUAL Bits Translation to Time Quality.
Appendix K
➤
Updated Analog Quantities for processing of the RMS data.
20150123
Preface
➤
Added Safety Information and General Information.
➤ Updated the Product Compliance label in Hazardous Locations Approval and the product labels in General
Information.
Section 1
➤
Changed the Certifications section title to Compliance and relocated the section to the beginning of the
Specifications.
➤ Added the hazardous locations compliance approvals to Specifications.
20140402
Preface
➤
Updated the Product Compliance label.
Section 1
➤
Updated the Specifications for element accuracy and oscillography length.
Section 2
➤
Updated Card Configuration Procedure.
Table A.8 Instruction Manual Revision History (Sheet 6 of 9)
Revision Date Summary of Revisions
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