5.17
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Metering and Monitoring
Thermal Monitor (SEL-387-6 Relay)
➤ Maximum winding hot-spot temperature
➤ Maximum per-unit load
➤ Maximum insulation aging acceleration factor (FAA)
➤ Daily 24-hour accumulated loss of life (value of accumulated
24-hour loss of life at midnight)
➤ Total accumulated loss of life (sum of the daily 24-hour
accumulated loss of life values)
➤ * showing a communication failure
The format for the THE D report is as follows:
=>THE D <Enter>
XFMR 1 Date: 04/25/00 Time: 00:00:43.248
STATION A
FID=SEL-387-6-X117-V0-Z001001-D20000419
Transformer 1
Max Max Calc Max Msd Max
Date Ambient Top Oil Top Oil Hot Spot Max Load Max FAA RLOL TLOL
04/25/00 15.0 32.6 -0- 34.2 0.48 0.0 0.00 0.00
Transformer 2
Max Max Calc Max Msd Max
Date Ambient Top Oil Top Oil Hot Spot Max Load Max FAA RLOL TLOL
04/25/00 15.0 32.6 -0- 34.2 0.48 0.0 0.00 0.00
Transformer 3
Max Max Calc Max Msd Max
Date Ambient Top Oil Top Oil Hot Spot Max Load Max FAA RLOL TLOL
04/25/00 15.0 32.6 -0- 34.2 0.48 0.0 0.00 0.00
=>>
Retrieving Thermal
Data Reports
Thermal data reports are accessed with the THE command in the following
different ways:
Table 5.2 Using the THE Command to Access Data Reports (Sheet 1 of 2)
Example THE Serial Port
Commands
Format
THE Enter THE command with no additional
parameters to display the present status of the
monitored transformer.
THE 1 Enter THE command followed by a number (1 in this
example) to display the latest archived thermal event
report.
THE D Enter THE command followed by D and no additional
parameters to display all available daily profile data
records.
THE H Enter THE command followed by an H but with no
additional parameters to display all available hourly
profile data records. The chronological progression
through the report is down the page and in descending
order.
THE H (or D) 3/30/00 Enter THE H (or D) followed by the date
(3/30/00 in this example) to display all records
(if they exist) starting with that date and ending with
the present date. The records display with the latest
record at the beginning (top) of the report and the
oldest record at the end (bottom) of the report.
Chronological progression through the report is down
the page and in descending order.
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