Date Code 20001006 Firmware Versions A-1
SEL-351 Instruction Manual
APPENDIX A: FIRMWARE VERSIONS
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-351-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-351-x-Rxxx-Vx-Z001001-Dxxxxxxxx
The firmware revision number is after the “R” and the release date is after the “D”. The single “x”
after “SEL-351” is the firmware version number and will be a 1, 2, 3, or 4, depending on the
firmware features ordered with the relay (if the firmware version is a zero [0], then the “x” field
will not appear):
x = 0 Standard Features
x = 1 Standard Features plus MIRRORED BITS™ and Load Profile
x = 2 Same as x = 1, plus Power Elements
x = 3 Same as x = 1, plus Voltage Sag/Swell/Interrupt Elements
x = 4 Same as x = 1, plus Power Elements and Voltage
Sag/Swell/Interrupt Elements
For example:
FID=SEL-351-4-R205-VM-Z001001-D19990827
is firmware version number 4, firmware revision number 205, release date August 27, 1999.
Courtesy of NationalSwitchgear.com
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