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4-6
Event Reporting
Date Code 970103
SEL-251, -2, -3 Instruction Manual
Fault Triggered Event Report
Example Event Report 2 shows all eleven cycles of a fault triggered event report. The first two
cycles show prefault conditions. The event report was triggered when the
50NL
element picked
up on an AG fault.
50NL
is set to trigger event reports via the programmable event report trigger
variable ER(1246).
50NL
is not set to initiate tripping. Tripping is initiated when
50NLT
expires 2 cycles later (setting 50NLT = 2).
50NLT
is set to initiate tripping via the
programmable tripping variable TR(1246). Comments to the right of the event report and
settings explain additional details.