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Date Code 990215 Standard Event Reports and SER 12-1
SEL-351P Manual Técnico
SECTION 12: STANDARD EVENT REPORTS AND SER
I
NTRODUCTION
The SEL-351P Recloser Control offers two styles of event reports:
•
Standard 15/30-cycle event reports
•
Sequential Events Recorder (SER) Report
Resolution: 1 ms
Accuracy: +1/4 cycle
These event reports contain date, time, current, voltage, frequency, relay element, optoisolated
input, output contact, and fault location information.
The control generates (triggers) standard 15/30-cycle event reports by fixed and programmable
conditions. These reports show information for 15 or 30 continuous cycles. Up to twenty-eight
15-cycle or fourteen 30-cycle reports are stored in nonvolatile memory; if more reports are
triggered, the newest event report overwrites the oldest event report. See Figure SECTION 12:
.2 for an example standard 15-cycle event report.
The control adds lines in the SER report for a change of state of a programmable condition. The
SER lists date and time-stamped lines of information each time a programmed condition changes
state. The control stores the latest 512 lines of the SER report in nonvolatile memory. If the
report fills up, newer rows overwrite the oldest rows in the report. See Figure SECTION 12: .5
for an example SER report.
S
TANDARD
15/30-C
YCLE
E
VENT
R
EPORTS
See Figure SECTION 12: .2 for an example event report ( Note : Figure SECTION 12: .2 is on
multiple pages).
Event Report Length (Settings LER and PRE)
The SEL-351P provides user-programmable event report length and prefault length. Event report
length is either 15 or 30 cycles. Prefault length ranges from 1 to 29 cycles. Prefault length is the
first part of the event report that precedes the event report triggering point.
Set the event report length with the Access Level 2 global (SET G) LER setting and the prefault
length with the PRE setting. See the SET G command in Table 9.1 and corresponding Settings
Sheet 18 of 23 in
Section 9: Setting the SEL-351P Recloser Control for instructions on setting
the LER and PRE settings.
Changing the LER setting erases all events stored in nonvolatile memory. Changing the PRE
setting has no effect on the nonvolatile reports. The factory default settings are LER = 15 and
PRE = 4.