Omicron CP SB1 - Page 37

37
Application
In the Transformer high-voltage side column, + means that the terminals in the
CP SB1 are short circuited.
In the graphics, the symbol means N / H0.
YNd11 A U-N / H1-H0 u-w / X1-X3 1/√3
B V-N / H2-H0 v-u / X2-X1
C W-N / H3-H0 w-v / X3-X2
Yd11 A U-(V+W) /
H1-(H2+H3)
u-w / X1-X3 1*√3/2
BV-(U+W) /
H2-(H1+H3)
v-u / X2-X1
CW-(U+V) /
H3-(H1+H2)
w-v / X3-X2
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
U/H1
W/H3
V/H2
u/X1
w/X3
v/X2
U/H1
W/H3
V/H2
u/X1
w/X3
v/X2