9.2
SEL-387-0, -5, -6 Relay Instruction Manual Date Code 20170601
Event Reports and SER
Standard 15-, 30-, or 60-Cycle Event Reports
Standard 15-, 30-, or 60-Cycle Event Reports
Event Report Length
(Settings LER and
PRE)
The SEL-387 provides user-programmable event report length and pre-fault
length. Event report length is set at 15, 30, or 60 cycles, using the Global
setting LER. Pre-fault length ranges from 1 to (LER-1) cycles. Set the pre-
fault length with the Global setting PRE. The LER and PRE settings are
accessible either via the SET G serial port command or via the {SET}/
GLOBAL
front-panel pushbuttons.
Changing the LER and/or PRE settings has no effect on previously stored
nonvolatile reports.
Standard Event
Report Triggering
The relay triggers (generates) a standard 15-, 30-, or 60-cycle event report
when any of the following occur:
➤ Relay Word bits TRIP1 through TRIP5 assert
➤ Relay Word bits CLS1 through CLS4 assert
➤ Programmable SELOGIC
®
control equation setting ER asserts
to logical 1
➤ PULSE serial port/front-panel command executed for output
contact OUT101 through OUT107 or other OUTnnn contacts if
available
➤ TRIGGER serial port command executed
Relay Word Bits TRIP1–TRIP5, CLS1–CLS4
Relay Word bits TRIPn (n = 1, 2, 3, 4, or 5) usually would be assigned to an
output contact for tripping a circuit breaker (e.g., setting OUT101 = TRIP1).
SEL
OGIC control equation settings TRn initiate the Trip Logic and control the
assertion of Relay Word bits TRIPn (see Figure 4.7). The Relay Word bit
OCm (m = 1, 2, 3, 4), initiated by the “Open breaker m” serial port command
OPE m or the front-panel {CNTRL}/
Open command, normally would be
assigned to TRm.
Similarly, Relay Word bits CLSm (m = 1, 2, 3, 4) would be assigned to an
output contact for closing a circuit breaker (e.g., setting OUT105 = CLS1).
SEL
OGIC control equation settings CLm initiate the Close Logic and control
the assertion of Relay Word bits CLSm (see Figure 4.8). The Relay Word bit
CCm, initiated by the “Close breaker m” serial port command CLO m or the
front-panel {CNTRL}/
Close command, normally would be assigned to CLm.
Any condition that is set to trip in setting TRn, or to close in setting CLm, does
not have to be entered in SEL
OGIC control equations setting ER. The assertion
of Relay Word bit TRIPn or CLSm automatically triggers a standard 15-, 30-,
or 60-cycle event report.
Programmable SELOGIC Control Equation Setting ER
The SELOGIC control equation setting ER is set to trigger standard 15-, 30-, or
60-cycle event reports for conditions other than tripping or closing conditions
already listed in settings TRn or CLm. When setting ER sees a logical 0 to
logical 1 transition, it generates an event report (if it is not already generating
a report that encompasses the new transition). The factory setting is:
ER = /50P11 + /51P1 + /51Q1 + /51P2 + /51Q2 + /51P3
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