ABB ret650 - Function Block; Operation Principle; Settings; Signals

7.3.3 Function block
LEPDIS
I3P*
U3P*
BLOCK
STCNDLE
IEC10000119-1-en.vsd
IEC10000119 V1 EN
Figure 59: LEPDIS function block
7.3.4 Signals
Table 61: LEPDIS Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Three phase group signal for current inputs
U3P GROUP
SIGNAL
- Three phase group signal for voltage inputs
BLOCK BOOLEAN 0 Block of function
Table 62: LEPDIS Output signals
Name
Type Description
STCNDLE INTEGER Binary coded starts from load encroachment
7.3.5 Settings
Table 63: LEPDIS Group settings (basic)
Name
Values (Range) Unit Step Default Description
RLd 0.05 - 3000.00 ohm/p 0.01 1.00 Load resistive reach in ohm/phase
ArgLd 5 - 85 Deg 1 38 Load encroachment inclination of load
angular sector
Table 64: LEPDIS Non group settings (basic)
Name
Values (Range) Unit Step Default Description
GlobalBaseSel 1 - 6 - 1 1 Selection of one of the Global Base Value
groups
7.3.6 Operation principle
The basic impedance algorithm for the operation of Load encroachment LEPDIS is
the same as for the distance zone measuring function. LEPDIS includes three
impedance measuring loops intended for phase-to-phase as well as for three-phase
faults.
Section 7 1MRK 504 135-UEN A
Impedance protection
138
Technical manual