Monitored Data - ABB REL650 series Technical Manual

1MRK 506 335-UUS A
Name Values (Range)
DrepChNoV_A 1 - 30
DrepChNoV_B 1 - 30
DrepChNoV_C 1 - 30
14.14.6
14.14.7
Technical manual
Unit Step
Ch 1
Ch 1
Ch 1

Monitored data

Table 493: LMBRFLO Monitored data
Name Type
FLT_REL REAL
FLT_DIST REAL
FLT_X REAL
FLT_R REAL
FLT_LOOP INTEGER
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.
Default Description
5 Recorder Input number recording phase
voltage, VA
6 Recorder Input number recording phase
voltage, VB
7 Recorder Input number recording phase
voltage, VC
Values (Range) Unit
- -
- -
- Ohm
- Ohm
0=--- -
1=L1-N
2=L2-N
3=L3-N
4=L1-L2
5=L2-L3
6=L3-L1
7=L1-L2-L3
Section 14
Monitoring
Description
Distance to fault, relative
Distance to fault in line length
unit
Reactive distance to fault
Resistive distance to fault
Fault loop
665