Name Values (Range) Unit Step Default Description
DrepChNoIP 0 - 30 Ch 1 0 Recorder input number recording 3I0 on
parallel line
DrepChNoUL1 1 - 30 Ch 1 5 Recorder input number recording phase
voltage, UL1
DrepChNoUL2 1 - 30 Ch 1 6 Recorder input number recording phase
voltage, UL2
DrepChNoUL3 1 - 30 Ch 1 7 Recorder input number recording phase
voltage, UL3
12.14.6 Monitored data
Table 410: LMBRFLO Monitored data
Name Type Values (Range) Unit Description
FLT_REL REAL - - Distance to fault, relative
FLT_DIST REAL - - Distance to fault in line
length unit
FLT_X REAL - Ohm Reactive distance to fault
FLT_R REAL - Ohm Resistive distance to fault
FLT_LOOP INTEGER 0=---
1=L1-N
2=L2-N
3=L3-N
4=L1-L2
5=L2-L3
6=L3-L1
7=L1-L2-L3
- Fault loop
12.14.7 Operation principle
The Fault locator (LMBRFLO) in the IED is an essential complement to other
monitoring functions, since it measures and indicates the distance to the fault with
high accuracy.
When calculating distance to fault, pre-fault and fault phasors of currents and voltages
are selected from the Trip value recorder data, thus the analog signals used by the fault
locator must be among those connected to the disturbance report function. The analog
configuration (channel selection) is performed using the parameter setting tool within
PCM600.
The calculation algorithm considers the effect of load currents, double-end infeed and
additional fault resistance.
Section 12 1MRK 511 287-UEN A
Monitoring
474
Technical manual
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