27
Application
Dyn5 A U-V / H1-H2 n-u / X0-X1 1*√3
B V-W / H2-H3 n-v / X0-X2
C W-U / H3-H1 n-w / X0-X3
Dy5 A U-(V+W) /
H1-(H2+H3)
w-u / X3-X1 √3/2
BV-(U+W) /
H2-(H1+H3)
u-v / X1-X2
CW-(U+V) /
H3-(H1+H2)
v-w / X2-X3
Dyn7 A U-V / H1-H2 v-n/ X2-X0 √3
B V-W / H2-H3 w-n / X3-X0
C W-U / H3-H1 u-n / X1-X0
Dy7 A U-(V+W) /
H1-(H2+H3)
v-u / X2-X1 1*√3/2
BV-(U+W) /
H2-(H1+H3)
w-v / X3-X2
CW-(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