P.8.34
SEL-411L Relay Protection Manual Date Code 20151029
Oscillography, Events, and SER
Sequential Events Recorder (SER)
acquisition rate of 5 minutes, the relay stores at least 10 days of all analog
signals selected for profiling in nonvolatile memory. The report includes the
time of acquisitions and the magnitude of each selected analog quantity. By
defining conditions in the signal profiling enable SEL
OGIC variable setting
(SPEN), you can record analog values at particular periods or conditions of
interest.
SPAQgg (Analog Quantities for Signal Profiling)
Enter any analog quantity available in the relay from the Analog Quantity list
in this free-form setting.
SPAR (Signal Profile Acquisition Rate)
Although you can select up to 20 analog quantities, the signal acquisition rate
is the same for all analog quantities. Select an acquisition rate of 1, 5, 15, 30,
or 60 minutes.
SPEN (Signal Profile Enable)
Use this SELOGIC control equation to specify conditions under which the
profiling must take place. If there are no conditions, be sure to set SPEN = 1,
or else no data are recorded (default value of NA disables the function).
Setting Description Range Default Category
SPAR Signal Profile Acq Rate 1, 5, 15, 30, 60 min 5 Report
Setting Description Range Default Category
SPEN Signal Profile Enable SV 0 Report
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