U.A.12
SEL-421 Relay User’s Guide Date Code 20090715
Firmware and Manual Versions
Instruction Manual
20090218
User’s Guide
Section 4
➤ Updated Changing the Default Passwords to add Access Level C information.
➤ Updated Figure 4.5: Access Level Structure.
➤ Updated Table 4.3: SEL-421 Access Levels and Table 4.4: SEL-421 Access Level Commands and Passwords.
➤ Updated Communications Ports Access Levels to reflect new Access Level C port settings.
➤ Updated steps under Passwords.
Appendix A
➤ Updated for Ethernet card firmware version R110.
➤ Updated for firmware version R127.
Reference Manual
Section 9
➤ Modified Password to reflect the extended password length from 6 to 12 characters.
Section 10
➤ Updated Table 10.93: Protocol Selection.
20090105
User’s Guide
Section 1
➤ Updated Table 1.1: Application Highlights.
Section 4
➤ Added description of CAL access level.
Appendix A
➤ Updated for firmware version R125 (SEL-421-2, -3) and R204 (SEL-421-0, -1).
Reference Manual
Section 7
➤ Added synchrophasor settings MRTCDLY, RTCRATE, PMUMODE, RTCID.
➤ Updated Table 7.1: PMU Settings in the SEL-421 for C37.118 Protocol in Global Settings and
Table 7.3: SEL-421 Serial Port Settings for Synchrophasors.
➤ Added Table 7.11: Synchrophasor Client Status Bits, Table 7.12: Remote Synchrophasor Data Bits, and
Table 7.14: Synchrophasor Aligned Analog Quantities.
Section 9
➤ Added CAL, COM RTC, COM RTC c C and COM RTC c R, MET RTC, and RTC commands and
descriptions.
➤ Modified the PAS command description.
Section 10
➤ Updated Table 10.15: Synchronized Phasor Measurement.
➤ Added Table 10.99: PMU Protocol Settings.
Appendix A
➤ Updated Table A.1: Alphabetic List of Relay Word Bits and Table A.50: Time and Synchronization Control
Bits.
➤ Added Table A.55: RTC Remote Digital Status and Table A.56: Fast Operate Transmit Bits.
Appendix B
➤ Updated Table B.1: Analog Quantities Sorted Alphabetically and Table B.2: Analog Quantities Sorted by
Function.
20081022
User’s Guide
Appendix A
➤ Updated for Ethernet card firmware version R109 and SELBOOT firmware version R103.
20080917
User’s Guide
Appendix A
➤ Updated for Ethernet card firmware version R108 and SELBOOT firmware version R103.
Table A.5 Instruction Manual Revision History (Sheet 2 of 16)
Revision Date Summary of Revisions
Courtesy of NationalSwitchgear.com