CP SB1 User Manual
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YNd5 A U-N / H1-H0 w-u / X3-X1 1/√3
B V-N / H2-H0 u-v / X1-X2
C W-N / H3-H0 v-w / X2-X3
Yd5 A U-(V+W) /
H1-(H2+H3)
w-u / X3-X1 √3/2
BV-(U+W) /
H2-(H1+H3)
u-v / X1-X2
C W-(U+V) /
H3-(H1+H2)
v-w / X2-X3
YNd7 A U-N / H1-H0 v-u / X2-X1 1/√3
B V-N / H2-H0 w-v / X3-X2
C W-N / H3-H0 u-w / X1-X3
Yd7 A U-(V+W) /
H1-(H2+H3)
v-u / X2-X1 1*√3/2
BV-(U+W) /
H2-(H1+H3)
w-v / X3-X2
C W-(U+V) /
H3-(H1+H2)
u-w / X1-X3
Table 3-1 Different Vector Groups (continued)
IEC
60076
vec-
tor
group
Winding connection Mea-
sure-
ment
Trans-
former
high-
voltage side
Trans-
former
low-voltage
side
Mea-
sured
turn
ratio
HV / H LV /X