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1MRK 506 355-UEN A
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
4
X +
(
1
XN
)
50% of RLdFw
IEC09000734 V3 EN
Figure 22:
Operating characteristic for phase selection function, forward
direction single-phase faults
4
X1
50% RLdFw
IEC09000735 V3 EN
Figure 23:
Operating characteristic for phase selection function, forward
direction phase-to-phase faults
W
( /
loop
)
X
1
85%
5
ArgNegRes
2
7
6
RFFwPE
W
(
/
phase
)
X
1
85%
5
ArgNegRes
2
7
6
ArgDir
0.5·RFFwPP
Section 10
3
ArgLd
60°
W
( /
loop
R
ArgDir
IEC09000734-3-en.vsd
3
ArgLd
60°
W
(
/
phase
R
IEC09000735-3-en.vsd
)
)
105
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