Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-11
ST
1.3.1 Line parameters
The column GROUP x LINE PARAMETERS is used to enter the characteristics of the
prote
i
t
s
Setting range
cted line or cable. These settings are used by the fault locator as the base data for
nput to the distance to fault algorithm, and also as the reference for all distance zones when
he Distance set up is preferred in the ‘Simple’ setting mode. It also accommodates the
ystem phase rotation (phase sequence) and defines the single or three pole tripping mode.
Menu text Default setting
in.
p size
M Max.
Ste
Line Length (km) 100 0.01 1,000 0.01
Setting of the protected line/cabl h in km
s selec ible’ in the C umn and if ‘Distance
e lengt
ted as ‘Vis
. This setting is available if MEASURE’T
ONFIGURATION colSETUP column i
unit’ in the MEASURE’T SETUP column is selected as ‘kilometers’.
Line Length (miles) 62.10 0.005 621 0.005/0.01
Setting of the protected line/cable length in miles. This setting is available if MEASURE’T
SETUP column is selected as ‘Visible’ in the CONFIGURATION column and if ‘Distance
unit’ in the MEASURE’T SETUP column is selected as ‘miles’. Dual step size is provided,
s up to 10 miles the step siz .005 miles, 0.01 miles oth se. for cables/short line e is 0 erwi
Line Impedance
10/In 0.05/In
500 (In x
percentage
reach
setting of
furthest
reaching
zone)
0.01/In
Setting for protected line/cable positive sequence impedance in either primary or
rence chosen in the
tor, and for all distance
E PARAMETERS
secondary terms, depending on the Setting Values refe
CONFIGURATION column. The set value is used for Fault loca
zone reaches calculation if ‘Simple’ setting mode under GROUP x LIN
is selected.
Line Angle
70 20 90 1
Setting of the line angle (line positive sequence impedance angle).
kZN Residual Comp 1 0 10 0.01
Setting of the residual compensation factor magnitude, used to extend the ground loop
reach by a multiplication factor of (1+ kZN), is calculated as ratio:
│kZN│ = (Z – Z )/3Z where,
0 1
= positive sequen
1
Z ce im nce for the protec ine or cable.
d line or cable.
1
Z = zero sequence impedance for the protecte
peda ted l
0
kZN Residual Angle
0 -180 90 1
Setting of the residua
kZN = (Z
0
– Z
1
)
Z
1
= positive sequenc
e for the protected line or cable.
l compensation factor angle (in degrees) is calculated as:
/3Z
1
where,
e impedance for the protected line or cable.
Z
0
= zero sequence impedanc
Mutual Comp Disabled Enabled or Disabled
To enable (activate) or disable (turn off) the Mutual compensation replica used in both,
nd fault loops. Distance and Fault locator grou
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