Date Code 20020129
SEL-300 Series Relays Firmware Upgrade Instructions
B-1
SEL-387E Instruction Manual
APPENDIX B: SEL-300 SERIES RELAYS FIRMWARE
UPGRADE INSTRUCTIONS
F
IRMWARE
(F
LASH
) U
PGRADE
O
VERVIEW
Note:
These firmware upgrade instructions apply to all SEL-300 series relays except the
SEL-321 series relays (which use EPROM instead of Flash).
SEL may occasionally offer firmware upgrades to improve the performance of your relay. The
relay stores firmware in Flash memory; therefore, changing physical components is not
necessary. A firmware loader program called SEL
BOOT
resides in the relay. These instructions
give a step-by-step procedure to upgrade the relay firmware by uploading a file from a personal
computer to the relay via a serial port.
Note:
SEL strongly recommends that you perform the firmware upgrade at the location of the
relay and with a direct connection from the personal computer to one of the serial ports
of the relay. Do not attempt to load firmware from a remote location because problems
can arise that you will not be able to address from a distance. When upgrading at the
substation, do not attempt to load the firmware into the relay through an SEL-2020 or
SEL-2030 Communications Processor.
Perform the firmware upgrade process in the following sequence:
A. Prepare the Relay
B. Establish a Terminal Connection
C. Save Settings and Other Data
D.
Start
SEL
BOOT
E. Download Existing Firmware
F. Upload New Firmware
G. Check Relay Self-Tests
H. Verify Calibration, Status, Breaker Wear, and Metering
I.
Return Relay to Service
Required Equipment
Personal computer
Terminal emulation software that supports the XMODEM/CRC protocol (these
instructions use HyperTerminal from a Microsoft
®
Windows
®
operating system)
Serial communications cable (SEL-C234A or equivalent)
Disk containing firmware upgrade file