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1MRK 506 355-UEN A
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
When the load current compensation is inactive, the dotted lines and
test point 13 are valid. Test points 5, 6, and 7 are not valid for this
measurement.
11
X1
10
40% of RLdFw
80% of RLdFw
IEC05000368 V3 EN
Figure 20:
Distance protection characteristic with test points for phase-to-phase
measurements
Table
23
is used in conjunction with figure 20.
11
X1+XN
10
40% of RLdFw
80% of RLdFw
alt. 80% of
RFPE (Load
encroachment)
IEC05000369 V3 EN
Figure 21:
Distance protection characteristic with test points for phase-to-earth
measurements
X
2
1
80%
3
50%
4
12
120°
a
5
6
R (Ohm/phase)
7
13
9
c
20°
8
0.5 x RFPP
IEC05000368-3-en
X
2
1
80%
3
50%
4
12
5
120°
a
6
7
13
9
20°
8
RFPE
IEC05000369-3-en.vsd
Section 10
R (Ohm/loop)
101
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