Date Code 20011205
Standard Event Reports and SER
12-1
SEL-311A Instruction Manual
SECTION 12: STANDARD EVENT REPORTS AND SER
I
NTRODUCTION
The SEL-311A Relay offers two styles of event reports:
·
Standard 15/30/60/180-cycle oscillographic event reports.
·
Sequential events recorder (SER) report.
The standard event reports contain date, time, current, voltage, frequency, relay element,
optoisolated input, output contact, and fault location information.
The relay generates (triggers) standard 15/30/60/180-cycle event reports by both fixed and
programmable conditions. These reports show information for 15, 30, 60, or 180 continuous
cycles. At least forty-three 15-cycle, twenty-five 30-cycle, thirteen 60-cycle, or four 180-cycle
reports are maintained; if more reports are triggered, the latest event report overwrites the oldest
event report. See Figure 12.2 for an example standard 15-cycle event report.
The relay adds lines in the sequential events recorder (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 relay 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 12.5 for an example SER report.
S
TANDARD
15/30/60/180-C
YCLE
E
VENT
R
EPORTS
See Figure 12.2 for an example event report (
Note
: Figure 12.2 is on multiple pages).
Event Report Length (Settings LER and PRE)
The SEL-311A Relay provides user-programmable event report length and pre-fault length.
Event report length is 15, 30, 60, or 180 cycles. Pre-fault length ranges from 1 to 179 cycles.
Pre-fault length is the first part of the event report that precedes the event report triggering point.
Set the event report length with the
SET G LER
setting. Set the pre-fault length with the
SET G
PRE
setting. See the
SET G
command in Table 9.1 and corresponding Settings Sheet 12 in
Section 9: Setting the Relay
for instructions on setting the LER and PRE settings.
Changing the LER setting will erase all events stored in nonvolatile memory. Changing the PRE
setting has no effect on the nonvolatile reports.
Standard Event Report Triggering
The relay triggers (generates) a standard event report when any of the following occur:
·
Relay Word bit TRIP asserts
·
Programmable SEL
OGIC
®
control equation setting ER asserts
Summary of Contents for SEL-311A
Page 6: ......
Page 8: ......
Page 10: ......
Page 24: ......
Page 40: ......
Page 66: ......
Page 96: ......
Page 98: ......
Page 112: ......
Page 114: ......
Page 122: ......
Page 170: ......
Page 202: ......
Page 204: ......
Page 246: ......
Page 248: ......
Page 286: ......
Page 290: ......
Page 304: ......
Page 306: ......
Page 334: ......
Page 384: ......
Page 386: ......
Page 394: ......
Page 398: ......
Page 402: ......
Page 404: ......
Page 410: ......
Page 412: ......
Page 426: ......
Page 444: ......
Page 460: ......
Page 474: ......