Basler BE1-CDS220, Instruction Manual

Page: 22 / 476

1-10 General Information BE1-CDS220
D2837-12
02-26-03
H
2
H
1
H
3
X
2
X
1
X
0
X
3
I
CD
I
C
=I
CD
-I
AD
I
c
=-I
cy
I
cy
I
b
=-I
by
I
by
I
a
=-I
ay
I
ay
I
BD
I
B
=I
BD
-I
CD
I
AD
I
A
=I
AD
-I
BD
X
0
B
C A
H
3
H
2
H
1
X
1
X
2
X
3
I
Differential
I
a
I
A
I
a
lags I
A
by 180°+30°=210°
I
b
I
c
I
a
I
BD
I
CD
I
AD
-I
BD
I
A
=I
AD
-I
BD
Illustration A
Illustration B Illustration C
Ib=Low side, phase B line current
I
BD
=Phase B, delta winding current
I
A
=High side, phase A line current Ia=Low side, phase A line current
I
B
=High side, phase B line current
IC=High side, phase C line current
I
AD
=Phase A, delta winding current
I
CD
=Phase C, delta winding current
Ic=Low side, phase C line current
Ia
Y
=Phase A, wye winding current
Ib
Y
=Phase B, wye winding current
Ic
Y
=Phase C, wye winding current
Figure 1-4. Delta/Wye Transformer Currents