B.2
SEL-351A Relay Instruction Manual Date Code 20080213
Firmware Upgrade Instructions
Relay Firmware Upgrade Instructions
Relay Firmware Upgrade Instructions
Introduction for
Relay Firmware
Upgrades
These firmware upgrade instructions apply to all SEL-300 series relays except
the SEL-321 series relays (which use EPROM instead of Flash).
SEL occasionally offers firmware upgrades to improve the performance of
your relay. Changing physical components is unnecessary because the relay
stores firmware in Flash memory.
A firmware loader program called SEL
BOOT resides in the relay. To upgrade
firmware, use the SEL
BOOT program to download an SEL-supplied file from a
personal computer to the relay via any communications port. This procedure is
described in the following steps.
NOTE: SEL strongly recommends
that you upgrade firmware at the
location of the relay and with a
direct
connection
from the personal
computer to one of the relay serial
ports. Do not load firmware from a
remote location; 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 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 Settings, Calibration, Status, Breaker Wear, and
Metering
I. Return the Relay to Service
Required Equipment
Gather the following equipment before starting this firmware upgrade:
➤ Personal computer
➤ Terminal emulation software that supports 1K Xmodem or
Xmodem (these instructions use HyperTerminal
®
from a
Microsoft
®
Windows
®
operating system)
➤ Serial communications cable (SEL Cable C234A or equivalent)
➤ Disk containing the firmware upgrade (.s19 or .exe) file
➤ Firmware Upgrade Instructions (these instructions)
Optional Equipment
These items help you manage relay settings and understand firmware upgrade
procedures:
➤ SEL-5010 Relay Assistant software or ACSELERATOR
®
QuickSet
™
SEL-5030 software
The SEL-5010 Relay Assistant software has a feature that
guides you through the conversion process. This upgrade guide
will assist you with steps C, D, E, F, and G of these upgrade
instructions. If you do not have the latest SEL-5010 software,
Courtesy of NationalSwitchgear.com
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