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6 F 2 S 0 8 5 7
Table 2.2.5.2 Setting for Phase Angle Matching (for α-method)
(a) Settings for typical connections of 2-windings transformer
Settings for phase angle correction Remarks
Transformer connections
described in IEC60076-1
Primary, Secondary
(P) (S)
Primary, Secondary, Phase angle Diff.
(yd_p) (yd_s) (vec_s)
Phase angle matching
calculation (Table 2.2.5.1)
Yy0
1 1 0
P: 0 O’clock
S: 0 O’clock
Dd0
2 2 0
P: 1 O’clock
S: 1 O’clock
Yd1
1 2 1
P: 0 O’clock
S: 1 O’clock
Dy1
2 1 1
P: 11 O’clock
S: 0 O’clock
Dd2
2 2 2 P: 1 O’clock
S: 3 O’clock
Dd4
2 2 4 P: 1 O’clock
S: 5 O’clock
Yd5
1 2 5 P: 0 O’clock
S: 5 O’clock
Dy5
2 1 5 P: 7 O’clock
S: 0 O’clock
Yy6
1 1 6 P: 0 O’clock
S: 6 O’clock
Dd6
2 2 6 P: 1 O’clock
S: 7 O’clock
Yd7
1 2 7 P: 0 O’clock
S: 7 O’clock
Dy7
2 1 7 P: 5 O’clock
S: 0 O’clock
Dd8
2 2 8 P: 1 O’clock
S: 9 O’clock
Dd10
2 2 10 P: 1 O’clock
S: 11 O’clock
Yd11
1 2 11 P: 0 O’clock
S: 11 O’clock
Dy11
2 1 11
P: 1 O’clock
S: 0 O’clock
Dz10
2 2 10 P: 1 O’clock
S: 11 O’clock
Note: A 2-windings transformer covers a 3-windings transformer with a stabilizing-winding circuit
for which 2-windings transformer protection relay can be applied.