8.2.3
View event recordings
The Event recording section in the Disturbance report shows the recording number.
The path in the HMI is shown below.
Main menu/Disturbance records/Record xx/Event recording
8.2.4
View trip values
In the Trip values section of a disturbance recording both the pre-fault and the fault
values for current, voltage and phase angle can be viewed. The recording number and
Trig time are also displayed. The path in the HMI is shown below.
Main menu/Disturbance records/Record xx/Trip Values
8.2.5
Recalculate distance to fault
This screen displays the fault loop with reactance and resistance values. To recalculate
the distance to fault, press the E key on the keypad.
In the Recalculate distance to fault section in a disturbance record it is possible not
only to view fault data but to recalculate the distance to a fault. By taking into account
peripheral influences like the resistance and reactance of other lines in the immediate
network area new distances can be calculated. The reactance and resistance in the
forward direction have the suffix B and in the reverse direction they have the suffix A.
Recalculation may be necessary in cases where the data from a different fault loop
needs to be calculated. In three phase faults only one loop is shown in the disturbance
record. When recalculating, a different fault loop can be selected. The path in the HMI
is shown below.
Main menu/Disturbance records/Record xx/Recalc distance to fault
8.3
Trigger a disturbance report manually
Using the manual trigger generates an instant disturbance report. Use this function to
get a
snapshot
of the monitored line. Follow the path below and answer yes in the
Execute manual trig dialog box.
Main menu/Disturbance records/Manual trig
Section 8
1MRK506276-UUS B
Handle disturbances
38
Operator's manual
