EVENT REPORTING
EVENT REPORT GENERATION
The relay generates a summary and long event report in response to actions listed in
Table 4.1. The summary event report allows a quick review of the information necessary to
determine the location and type of fault. The long event report displays eleven cycles of
information for analyzing system and scheme performance.
Note:
The relay need not trip to generate an event report.
Table 4.1: Event Report Triggering Actions
Fault in any zone
OPEN command execution (if a trip results)
TRIGGER command execution
IN1 input assertion
PERMISSIVE TRIP input assertion
BLOCK TRIP input assertion
EXTERNAL TRIGGER input assertion
TRIP output contact assertion
The relay generates a second summary and long event report for the same fault if the trip
occurs after the end of the first report.
Actions listed in Table 4.2 do not trigger an event report.
Table 4.2: Non-Event Report Triggering Actions
CLOSE command execution
DIRECT CLOSE input assertion
52A input status changes
Pickup of the 50P or 50NG overcurrent elements
Relay elements which trigger event reports must drop out for at least four cycles before they
can initiate another event report. This helps to eliminate multiple records for boundary faults.
Date Code 920423
Event Reporting
SEL-221F, -1 Instruction Manual
4-1
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Page 158: ...SETTINGS SHEET FOR SEL 221F RELAY PAGE 2 OF 6 DATE Date Code 921110 ...
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