Date Code 20080213 Instruction Manual SEL-351A Relay
Appendix A
Firmware and Manual Versions
Firmware
Determining the
Firmware Version in
Your Relay
To find the firmware revision number in your relay, view the status report
using the serial port STATUS command or the front-panel {STATUS}
pushbutton. For firmware versions prior to August 27, 1999, the status report
displays the Firmware Identification (FID) label:
FID=SEL-351A-Rxxx-Vx-Dxxxxxx
For firmware versions with the date code of August 27, 1999, or later, the FID
label will appear as follows with the Part/Revision number in bold:
FID=SEL-351A-Rxxx-Vx-Z001001-Dxxxxxxxx
The firmware revision number is after the “R” and the release date is after the
“D.”
See the appropriate firmware revision history table (listed below) for your
relay model.
The Firmware Revision History table for each relay model lists the firmware
versions, a description of modifications, and the instruction manual date code
that corresponds to firmware versions. The most recent firmware version is
listed first.
Relay Model Revision History
SEL-351A Table A .1
SEL-351A-1 Table A. 2
Table A.1 SEL-351A Firmware Revision History (Sheet 1 of 5)
Firmware Part/Revision No. Description of Firmware
Manual Date
Code
This firmware applies to the manual date code listed:
SEL-351A-R402-V0-Z009007-D20071226
➤ Manual update only. See Table A .3. 20080213
This firmware differs from the previous version as follows:
SEL-351A-R402-V0-Z009007-D20071226
➤ Added second residual ground time-overcurrent element
51G2T.
➤ Changed default length of compressed event reports to match
LER setting.
➤ Corrected an event reporting problem that occurred in the pres-
ence of heavily distorted current waveforms. This problem led
to errors in oscillography, event summary currents, and “pk”
current indicators. (Note: This problem did not affect protection
functions.)
20071226
Courtesy of NationalSwitchgear.com
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