Schweitzer Engineering SEL-387-0, Instruction Manual

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9.19
Date Code 20170601 Instruction Manual SEL-387-0, -5, -6 Relay
Event Reports and SER
Sequential Events Recorder (SER) Event Report
The present sample (IA = 2380 A) is a real rms current value that relates to the
phasor rms current value:
Equation 9.2
A calculation of the phasor using the previous pair, X = –1375 and Y = –2376,
yields a calculation of:
Equation 9.3
Thus, the phasor rotates in a counterclockwise direction in 90-degree
increments, as expected, when successive pairs of samples are used for
making the calculation.
Sequential Events Recorder (SER) Event Report
Figure 9.8 demonstrates an example SER event report.
=> SER 2/26/97 2/27/97 <Enter>
XFMR 1 Date: 03/13/97 Time: 18:27:42.091
STATION A
FID=SEL-387-R102-V-D970226
# DATE TIME ELEMENT STATE
4 2/26/97 10:33:54.873 TRIP3 Asserted
3 2/26/97 10:33:55.373 TRIP3 Deasserted
2 2/27/97 10:34:06.872 CLS3 Asserted
1 2/27/97 10:34:07.372 CLS3 Deasserted
=>
Figure 9.8 Example SER Event Report
SER Event Report
Row Triggering and
ALIAS Settings
The relay triggers (generates) a row in the SER event report for any change of
state in any one of the elements listed in the SER1, SER2, SER3, or SER4
trigger settings. Use port command
SHO R to view the settings, or SET R to
set them. The factory default settings are:
SER1 =
IN101, IN102, IN103, IN104, IN105, IN106
SER2 =
OUT101, OUT102, OUT103, OUT104, OUT105, OUT106, OUT107
SER3 = 0
SER4 =
0
The elements are Relay Word bits from Table 4.7 to Table 4.9 . Each element is
looked at individually to see if it asserts or deasserts. Any assertion or
deassertion of a listed element triggers a row in the SER event report. For
example, setting SER1 contains all six of the optoisolated inputs. Any time dc
voltage is applied to, or removed from, one of these inputs, a row is triggered
in the SER event report.
In the SER settings are 20 settings by which the user can redefine the names of
Relay Word bits in the SER report, to make the entries more readily
identifiable to the user. The settings are ALIAS1 to ALIAS20. If they are not
set, they are listed as, for example, ALIAS1 = NA.
2749 A 30.0

–
 
cos
•
2380 A
=
IA 2745 A 120.0

–

=