Schweitzer Engineering SEL-387-0, Instruction Manual

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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 SEL
OGIC®
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 TRIP n ( 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 TR n initiate the Trip Logic and control the
assertion of Relay Word bits TRIP n (see Figure 4.7 ). The Relay Word bit
OC m ( 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 TR m .
Similarly, Relay Word bits CLS m ( 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 CL m initiate the Close Logic and control
the assertion of Relay Word bits CLS m (see Figure 4.8 ). The Relay Word bit
CC m , initiated by the “Close breaker m ” serial port command CLO m or the
front-panel
{CNTRL}
/
Close
command, normally would be assigned to CL m .
Any condition that is set to trip in setting TR n , or to close in setting CL m , does
not have to be entered in SEL
OGIC
control equations setting ER. The assertion
of Relay Word bit TRIP n or CLS m automatically triggers a standard 15-, 30-,
or 60-cycle event report.
Programmable SEL
OGIC
Control Equation Setting ER
The SEL
OGIC
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 TR
n or CL m . 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