Micom P634 - Fault Data Acquisition Time

49Z64DMA
≥1
R
+
FT_DA:
Running time
[ 004 021 ]
R
+
FT_DA:
Fault duration
[ 008 010 ]
MAIN:
General reset USER
[ 003 002 ]
1: execute
MAIN:
Reset LED
306 020
≥1
MAIN:
General reset EXT
[ 005 255 ]
≥1
FT_RC:
Record. in progress
[ 035 000 ]
MAIN:
General starting
[ 036 000 ]
! G !
! G !
Fig. 3-77: Running time and fault duration.
3.19.2 Fault Data Acquisition Time
The P634 determines the measured fault data for a particular point in time
during a fault. Depending on the protection function that recognizes a fault, the
criterion for the determination of the recording start time is selected by the P634.
If, for example, the differential protection function detects a fault then the P634
determines the measured fault data at the time during the fault when the
maximum differential current was measured. The measured fault data are
displayed at the end of the fault. If several protection functions detect a fault
then the criterion is selected on the basis of the priorities given in the table
below. The selected criterion is displayed at the P634.
Priority Function Recognizing the Fault Acquisition Time Criterion
1 Differential protection function Maximum differential current
2 Ground differential protection, end a (Br: Restricted
earth fault protection, end a)
Maximum differential current
(REF_1)
3 Ground differential protection, end b (Br: Restricted
earth fault protection, end b)
Maximum differential current
(REF_2)
4 Ground differential protection, end c (Br: Restricted
earth fault protection, end c)
Maximum differential current
(REF_3)
5 Definite-time overcurrent protection or inverse-time
overcurrent protection
Maximum restraining current
6 Functions according to the selection through m out of n
parameters
End of fault
The difference in time between the start of the fault and the fault data
acquisition time is determined by the P634 and displayed.
3 Operation
P634
P634/EN M/R-42-A // P634‑311‑653 3-113