Functions
6-144
7SJ63 Manual
C53000-G1140-C120-1
Table 6-3
Selection of Paths to be Reported for Wye-Connected Voltage Transformers
Pickup
Possible Paths
Evaluated Paths
Notes
A
A–G, A–B, C–A
A–G or
A–G and least L–L
If only one phase is
picked up, then only the
appropriate phase-to-
ground path is displayed.
If the reactance’s of one
or both
φ
-
φ
paths are less
than the
φ
-G reactance,
then the
φ
-
φ
path with the
least reactance is also
displayed.
B
B–G, A–B, B–C
B–G or
B–G and least L–L
C
C–G, C–A, B–C
C–G or
C–G and least L–L
G
A–G, B–G, C–G
least L–G
Only the
φ
-G path with the
least reactance is dis-
played.
A, G
A–G
A–G
The appropriate phase-
to-ground path is dis-
played
B, G
B–G
B–G
C, G
C–G
C–G
A, B
A–B, A–G, B–G
A–B or
A–B and A–G and B–G
The appropriate
φ
-
φ
path
is always displayed; if the
reactance differential be-
tween the
φ
-G paths is
larger than 15% of the
larger
φ
-G path, then both
φ
-G paths are also dis-
played.
B, C
B–C, B–G, C–G
B–C or
B–C and B–G and C–G
A, C
C–A, A–G, C–G
C–A or
C–A and A–G and C–G
A, B, G
A–B, A–G, B–G
A–B or
A–B and A–G and B–G
The appropriate
φ
-
φ
path
is always displayed; if the
reactance differential be-
tween the
φ
-G paths is
larger than 15% of the
larger
φ
-G path, then both
φ
-G paths are also dis-
played.
B, C, G
B–C, B–G, C–G
B–C or
B–C and B–G and C–G
A, C, G
C–A, A–G, C–G
C–A or
C–A and A–G and C–G
A, B, C
A–B, B–C, C–A
Least
φ
-
φ
path
Only the least
φ
-
φ
path is
displayed.
A, B, C, G
A–B, B–C, C–A
Least
φ
-
φ
path
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