Operation Principle - ABB REC650 Technical Manual

1MRK 511 287-UEN A
12.13.6
12.14
12.14.1
12.14.2
Technical manual
GlobalBaseSel: Selects the global base value group used by the function to define
(IBase), (UBase) and (SBase).

Operation principle

The input signal must be connected to a range output of a measuring function block
(CVMMXN, CMMXU, VMMXU, VNMMXU, CMSQI, VMSQ or MVGGIO). The
function block converts the input integer value to five binary output signals according
to table 405.
Table 405: Input integer value converted to binary output signals
Measured supervised below low-low
value is: limit
Output:
LOWLOW High
LOW
NORMAL
HIGH
HIGHHIGH
Fault locator LMBRFLO
Identification
Function description
Fault locator
Functionality
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
great accuracy. It indicates the distance to fault in kilometers or miles as selected by
parameter setting.
The fault locator LMBRFLO function, supports kilometer and mile
for the line length unit. The fault distance will be presented with the
same unit as the line length and is mapped to IEC61850 -8-1
communication protocol, where the fault distance is supposed to be in
kilometer (km). Select the line length unit to kilometer for compliance
with IEC61850.
between low‐ between low
low and low and high limit
limit
High
High
IEC 61850 IEC 60617
identification identification
LMBRFLO -
Section 12
Monitoring
between high- above high-
high and high high limit
limit
High
High
ANSI/IEEE C37.2
device number
-
471