A.19
Date Code 20170927 Instruction Manual SEL-751 Relay
Firmware, ICD, and Manual Versions
Instruction Manual
Section 4
➤
Updated Figure 4.35: Hybrid Power System with Neutral Ground Resistor.
➤ Added a note for Figure 4.50: 81RF Fast Rate-of-Change-of-Frequency Logic to describe the settings
81RFIBLK := OFF and 81RFVBLK := OFF.
➤ Updated Table 4.89: Event Report Settings for event length and LER setting range. The relay now supports
event length as high as 180 cycles.
Section 6
➤
Updated the SEL-751 Settings Sheets event report length and LER setting range.
Section 7
➤
Updated Table 7.23: HIS HIF Command with HIS HIF C or R and HIS HIF CA or RA commands.
Section 9
➤
Updated the event storage capability of the SEL-751 in Event Reporting and Event Summaries.
Section 10
➤
Updated Table 10.8: Relay Self-Tests.
Appendix A
➤
Updated for firmware version R109.
Appendix F
➤
Added a note for GOOSE and ACSELERATOR Architect regarding GOOSE subscriptions when loading a new
CID file.
SEL-751 Command Summary
➤
Added HIS HIF CA or RA command to the list of Access Level 1 commands.
20131218
Section 4
➤
Updated the setting angle for the ACB phase rotation of the Delta Connected Voltages example under Setting
SYNCPH.
➤ Updated Figure 4.41: Synchronism-Check Elements.
Appendix A
➤
Updated for firmware version R108.
20131101
Section 1
➤
Lowered the minimum value of the VNOM setting range from 100 V to 20 V.
➤ Updated the ac current inputs under AC Current Inputs and the input voltage range under Power Supply in the
Specifications.
➤ Added Open State Leakage Current for Fast Hybrid to the Specifications.
➤ Added RTD Trip/Alarm Time Delay to RTD Protection category of the Specifications.
Section 2
➤
Added a note to Figure 2.18: Voltage Connections.
➤ Added a note for fail-safe operation of the fast hybrid output contacts.
Section 4
➤
Lowered the minimum value of the VNOM setting range from 100 V to 20 V.
➤ Updated Figure 4.51: Trip Logic.
➤ Added a note for RTD TRIP/WARNING levels.
➤ Added a note for fail-safe operation of the fast hybrid output contacts.
Section 7
➤
Updated the Fiber-Optic Serial Port paragraph.
➤ Updated +5 Vdc availability statement in +5 Vdc Power Supply.
Section 10
➤
Added a note for clear-jacketed fiber sensor.
➤ Updated the text for SALARM in the ALARM Output bullet of Self-Test.
Appendix A
➤
Updated for firmware version R106.
Table A.8 Instruction Manual Revision History (Sheet 7 of 9)
Revision Date Summary of Revisions
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