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1MRK 504 165-UEN Rev. K
X +
(
1
IEC09000734 V4 EN-US
Figure 33:
IEC09000735 V3 EN-US
Figure 34:
Transformer protection RET670
Commissioning manual
1
4
85%
XN
)
ArgNegRes
50% of RLdFw
Operating characteristic for phase selection function, forward direction single-
phase faults
X
1
4
85%
X1
ArgNegRes
50% RLdFw
0.5·RFFwPP
Operating characteristic for phase selection function, forward direction phase-to-
phase faults
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W
(
/
loop
)
X
5
60°
2
7
6
RFFwPE
W
(
/
phase
)
5
60°
2
7
6
ArgDir
Testing functionality by secondary injection
3
W
(
/
loop
)
R
IEC09000734-4-en.vsd
3
ArgLd
W
(
/
phase
)
R
IEC09000735-3-en.vsd
Section 11
115
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