
9.3
Date Code 20020903
SEL-587Z Instruction Manual
Event Reports and SER
Event Reports
Programmable SEL
OGIC
Control Equation Settings ER1 and ER2
The programmable SEL
OGIC
control equation settings ER1 and ER2 are set to
trigger event reports for conditions other than tripping conditions already
listed in SEL
OGIC
control equation setting TRn. The factory settings are:
Equation 9.1
ER1 is factory set with the three differential elements 87A1, 87B1, and 87C1.
Thus, at the inception of a fault, whichever element asserts first triggers an
event report.
ER2 is factory set with the second-level differential elements 87A2, 87B2,
and 87C2. For CT open-circuit detection, an event report is triggered when an
open-circuit condition occurs.
ER1 and ER2 trigger event reports independently and are rising-edge sensitive
(logical 0 to logical 1 transition). For example, if a line-to-ground fault occurs
and 87A1 asserts first in setting ER1 (logical 0 to logical 1 transition), an
event report will be triggered. If 87A1 remains asserted and then a short time
later 87A2 asserts, a second report will not be generated for the assertion of
87A2. ER1 is already at logical 1 because of the initial assertion of 87A1.
See
Control Equations on page 4.11 in Section 4: Control Logic
more information about SEL
OGIC
control equations.
TRIGGER and PULSE Serial Port Commands
The
TRIGGER
serial port command generates event reports, primarily for
testing purposes.
The
PULSE
serial port command is used to assert the output contacts for
testing purposes or for remote control. If output contact OUT1, OUT2, OUT3,
or OUT4 is asserted with the
PULSE
command, an event report is also
generated.
See
Section 7: ASCII Command Reference
for more information about serial
port commands.
Event Report
Summary
Each time the relay generates an event report, it also generates a
corresponding event summary (see
). Event summaries
present:
Relay and terminal identifiers (settings RID and TID)
Date and time when the event was triggered
Event type
Front-panel fault type targets at the time of trip
87 voltages, phase, negative-sequence and 3I
0
current
magnitudes taken from the event report row with maximum
voltages 87A, 87B, 87C and with maximum current A, B, C for
all fault types
This event summary information is also contained in the corresponding event
report. The identifiers, date, and time information is at the top of the event
report, and the other information follows at the end. See
ER1
87A1 + 87B1 + 87C1
=
ER2
87A2 + 87B2 + 87C2
=
Summary of Contents for SEL-587Z
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