Schweitzer Engineering SEL-387-0, Instruction Manual

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9.14
SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
Event Reports and SER
Standard 15-, 30-, or 60-Cycle Event Reports
Event R (Raw Winding Event Report)
The raw winding event report contains secondary phase currents for each of
the four winding inputs as well as the status of the eight digital outputs and six
optoisolated inputs. The SEL-387 samples the analog ac input currents 64
times per power system cycle. The relay filters the samples to remove
transient signals. The relay operates on the filtered values and reports them in
most event reports. The raw or unfiltered event report allows for viewing the
samples before digital filtering occurs.
Use the EVENT R command to retrieve raw winding event reports. There are
several options to customize the report format. The general command format
is:
EVE R [ n , S x , L y [ – [ w ]]] (parameters in [ ] are optional)
Refer to Figure 9.5 for an example raw winding event report. This example
event report displays rows of information each quarter-cycle and was retrieved
with the
EVE R S4 <Enter> command. The raw event report always shows
1.5 cycles of pretrigger data, in this case six samples instead of four.
IN 12 1
2
b IN101 asserted
IN102 asserted
IN101 and IN102 asserted
IN 34 3
4
b IN103 asserted
IN104 asserted
IN103 and IN104 asserted
IN 56 5
6
b IN105
asserted
IN106
asserted
IN105
and
IN106
asserted
Table 9.6 Differential Event Report Element Columns (Sheet 3 of 3)
Column
Heading
Symbol Definition
where:
n = Event number; defaults to 1 if not listed, where 1 is the
most recent event
S x = Displays x samples per cycle (4, 8, 16, 32, or 64); defaults
to 16 if not listed
L y = Displays y cycles of data (1 to LER); defaults to LER if
not listed
L y – = Displays from cycle y to end of report
L y – w = Displays from cycle y to cycle w