Basler Electric BE1-851 - Manual (Page 119)

Table 6-8. Legend for Figure 6-8
Call-Out Description
A
A fault summary report and an oscillographic record are triggered when either the SG-
TRIGGER PICKUP or LOGIC expression becomes TRUE.
B
During the time that the SG-TRIGGER TRIP expression is TRUE, targets are logged from
each of the protective functions that reach a TRIP state. If a protective function is not being
used for tripping purposes, the associated target function can be disabled through the SG-
TARG setting.
C
Fault clearing time is calculated as the duration of the time that either the SG-TRIGGER
PICKUP or LOGIC expression is TRUE.
D
Breaker operate time is calculated as the time from when the SG-TRIGGER TRIP
expression becomes TRUE until the fast-dropout current detector senses that the breaker
has successfully interrupted the current in all poles of the breaker.
E
A second oscillography record is triggered to record the end of the fault if the SG-TRIGGER
TRIP expression becomes FALSE. If the SG-TRIGGER TRIP expression does not become
TRUE (as would occur if the fault were cleared by a downstream device), the fault current
recorded in the fault summary report will be for the power system cycle ending two cycles
before the end of the fault record. This is also the case if the fault record was triggered
using the RF-TRIG command.
F
The fault currents are recorded in the fault summary report and on the Target Screen of the
HMI for the power system cycle immediately following the SG-TRIGGER TRIP expression
becoming TRUE. If the SG-TRIGGER TRIP expression does not become TRUE as would
occur if the fault were cleared by a downstream device, the fault current recorded in the
fault summary report will be for the power system cycle ending two cycles before the end of
the fault record. This is also the case if the fault record was triggered through the ASCII
command interface by the RF-TRIG command.
G
During the time that the SG-TRIGGER PICKUP expression is TRUE, the red Trip LED on
the front panel flashes indicating that the relay is picked up.
H
During the time the SG-TRIGGER TRIP expression is TRUE, the red Trip LED on the front
panel lights steadily indicating that the relay is in a tripped state. If targets have been logged
for the fault, the Trip LED is sealed in until the targets have been reset.
I
Breaker operations and interruption duty functions are driven by the breaker status function.
The operations counter is incremented on breaker opening. The magnitudes of the currents
that are used for accumulating breaker duty are recorded for the power system cycle ending
when the breaker status changes state. Breaker duty is accumulated every time that the
breaker opens even if it is not opening under fault.
J
Setting group changes are blocked when the SG-TRIGGER PICKUP expression is TRUE to
prevent protective functions from being reinitialized with new operating parameters while a
fault is occurring.
9289900990 Rev R BE1-851 Reporting and Alarms 6-17