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Section 11
Testing functionality by secondary injection
X1set
IEC05000368 V5 EN-US
Figure 23:
Table 21:
Test point
1
2
3
4
5
6
7
8
9
10
11
Table continues on next page
100
X
R1set
2
1
11
10
12
9
8
25% of RFPPZx/2
50% of RFPPZx/2
RFPPZx/2
Distance protection characteristic with test points for phase-to-phase
measurements
Test points for phase-to-phase loops L1-L2 (Ohm/Loop)
Reach
Set value
X
X1
set
R
0
X
X1
set
R
R1
set
X
0.8 x X1
set
R
0.8 x R1
+ RFPP/2
set
X
0.5 x X1
set
R
0.5 x R1
+ RFPP/2
set
X
0.85 x RFPP x tan (ArgRLd)
R
0.85 x RFPP
X
RLdFw x tan (ArgLd)
R
RLdFw
X
0
R
RLdFw
X
–0.2143 x RFPP/2
R
0.8 x RFPP/2
X
–0.4 x RLdFw x tan(ArgDir=20°)
R
0.4 x RLdFw
X
0.5 x X1
set
R
–0.23 x X1
set
X
0.8 x X1
set
R
–0.37 x X1
set
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80%
3
50%
4
5
6
R (Ohm/phase)
7
13
ArgDir
IEC05000368-5-en.vsdx
Comments
ArgLd = angle for the maximal load transfer
Exact: 0.8 x RFPP/2 (ArgDir=20°)
Exact –0.5 x R1
Exact –0.5 x R1
1MRK 505 378-UEN Rev. K
x tan(ArgNegRes=30°)
set
x tan(ArgNegRes=30°)
set
Line differential protection RED670
Commissioning manual
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