Test point
Reach
Set value
Comments
12
X
0.5 x X1
set
R
0.5 x R1
set
13
X
0
Only used when RLdFw > 0.5 x RFPP
R
0.5 x RFPP
is used in conjunction with figure
X1+XN
X
R (Ohm/loop)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFw
40% of RLdFw
RFPE
12
13
c
b =
Ar
gLD
alt. 80% of
RFPE (Load
encroachment)
120°
20°
a
IEC05000369-3-en.vsd
IEC05000369 V3 EN-US
Figure 34: Distance protection characteristic with test points for phase-to-earth
measurements
is used in conjunction with figure
Table 18: Test points for phase-to-earth L3-E (Ohm/Loop)
Test point
Reach
Value
Comments
1
X
(2 x X1
set
+X0
set
)/3
R
0
2
X
(2 x X1
set
+ X0
set
)/3
R
2 x R1
set
+ R0
set
)/3
3
X
0.8 x (2 x X1
set
+ X0
set
)/3
R
0.8 x (2 x R1
set
+ R0
set
)/3
+RFPE
set
4
X
0.5 x (2 x X1
set
+ R0
set
)/3
R
0.5 x (2 x R1
set
+R0
set
)/3 +
RFPE
set
5
X
0.85 x RFPE
set
x tan(ArgLdset)
ArgLd = angle for the maximal load transfer
R
0.85 x RFPE
6
X
RLdFwset x tan(ArgLdSet)
R
RLdFw
set
Table continues on next page
Section 12
1MRK 502 067-UEN B
Testing functionality by secondary injection
104
Commissioning manual
