Date Code 20011026 Communications 3-13
SEL-321/321-1 Instruction Manual
If there has been no event, the headings are displayed with the message: History Buffer Empty.
Table 3.4 describes entries in the History report.
Table 3.4: History Report Description
Parameter Entry Comment
# 1 Event report number
DATE 06/21/92 Date event occurred
TIME 00:01:38.302 Time report triggered
EVENT AG
BG
CG
AB
BC
CA
ABG
BCG
CAG
ABC T
A-phase to Ground Fault
B-phase to Ground Fault
C-phase to Ground Fault
AB Two-Phase Fault
BC Two-Phase Fault
CA Two-Phase Fault
AB Two-Phase to Ground Fault
BC Two-Phase to Ground Fault
CA Two-Phase to Ground Fault
Three-Phase Faults (T = TPA, TPB, TPC, or 3PT
assertion).
TRIP Report triggered by TPA, TPB, TPC, or 3PT assertion, no
fault.
EXT Report triggered by assertion of EXT (external trigger)
designated input.
EXTC Report triggered by TRIGGER command.
ER Report triggered by MER SELOGIC
®
control equations,
but no fault detecting element asserted in event report.
LOCAT 94.95 Distance to fault. Entry may be $$$$$$ if the fault locator
is unable to generate a reliable location.
GRP 1 Group number of active setting group at time event
triggered.
TARGETS INST AG Targets asserted for each event. Targets are identified just
as they are on front panel.
IRIG
IRIG directs the relay to read the demodulated IRIG-B time-code input at the port on the back
panel labeled "DEMODULATED IRIG-B."
If the relay reads the time code successfully, it updates the internal clock/calendar time and date
to the time-code reading. The relay then transmits a message with relay ID, date, and time.
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