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SEL-351A Relay Instruction Manual Date Code 20080213
Preface
Section 8: Breaker Monitor and Metering. Describes the operation of the
breaker monitor and demand, energy, and maximum/minimum
metering.
Section 9: Setting the Relay. Explains how to enter settings and also
contains the following setting reference information:
➤ Time-overcurrent curves (5 US and 5 IEC curves)
➤ Relay Word bit table and definitions (Relay Word bits are used
in SEL
OGIC
®
control equation settings)
➤ Settings Sheets for general relay, SELOGIC control equation,
global, SER, text label, and serial port settings
There are settings sheets for the SEL-351A and SEL-351A-1 relays.
These settings sheets can be photocopied and filled out to set the
SEL-351A or SEL-351A-1. Note that these sheets correspond to the
serial port SET commands listed in Table 9.1.
Section 10: Serial Port Communications and Commands. Describes serial
port connector pinout/terminal functions, communications cables,
communications protocol, and serial port commands.
See SHO Command (Show/View Settings) on page 10.25 for a list of
the factory default settings the SEL-351A ships within a standard relay
shipment.
SEL-351A Command Summary. Briefly describes the serial port commands
that are described in detail in Section 10: Serial Port Communications
and Commands.
Section 11: Front-Panel Interface (Only on Models With LCD). Describes the
front-panel operation of pushbuttons and their correspondence to serial
port commands, local control switches (local bit outputs LB1–LB16),
and rotating default displays.
Section 12: Standard Event Reports and SER. Describes standard 15- and
30-cycle event reports and sequential events recorder (SER) report.
Section 13: Testing and Troubleshooting. Describes general testing
philosophy, methods, and tools and relay self-tests and
troubleshooting.
Section 14: Appendices. Contains the following appendices:
➤ Appendix A: Firmware and Manual Versions
➤ Appendix B: Firmware Upgrade Instructions
➤ Appendix C: SEL Distributed Port Switch Protocol
➤ Appendix D: Configuration, Fast Meter, and Fast Operate
Commands
➤ Appendix E: Compressed ASCII Commands
➤ Appendix F: Setting Negative-Sequence Overcurrent Elements
➤ Appendix G: Setting SELOGIC Control Equations
➤ Appendix H: Distributed Network Protocol
➤ Appendix I: Using the SEL-251 and SEL-267 Relay Settings in
the SEL-351A Relay
➤ Appendix J: SEL-351A Fast SER Protocol
Courtesy of NationalSwitchgear.com
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