Test point Reach Set value Comments
6 X RLdFw x tan (ArgLd)
R RLdFw
7 X RLdFw x tan (ArgLd)
R 0
8 X –0.2143 x RFPPZx/2 Exact: 0.8 x RFPPZx/2
(ArgDir=20°)
R 0.8 x RFPPZx/2
9 X –0.4 x RLdFw x tan(ArgDir=20°)
R 0.4 x RLdFw
10 X 0.5 x X1
set
Exact –0.5 x R1
set
x
tan(ArgNegRes=30°)
R –0.23 x X1
set
11 X 0.8 x X1
set
Exact –0.5 x R1
set
x
tan(ArgNegRes=30°)
R –0.37 x X1
set
12 X 0.5 x X1
set
R 0.5 x R1
set
13 X 0
R 0.5 x RFPPZx
Table 32 is used in conjunction with figure 35.
X1Zx+XNZx
X
R (Ohm/loop)
50%
80%
1
2
3
4
5
6
7
8
9
10
11
80% of RLdFw
40% of RLdFw
RFPEZx
12
13
alt. 80% of
RFPEZx (Load
encroachment)
120°
20°
a
IEC05000369-4-en.vsdx
IEC05000369 V4 EN-US
Figure 36: Distance protection characteristic with test points for phase-to-
earth measurements
Table
33 is used in conjunction with figure 36.
Section 11 1MRK 505 378-UEN A
Testing functionality by secondary injection
138 Line differential protection RED670 2.2 IEC
Commissioning manual
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