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Winding Connections

1. The document discusses different transformer winding connections including Delta (Δ) and Wye (Y) configurations. 2. It provides step-by-step instructions for connecting transformer windings in both Δ and Y configurations for different vector groups including Dy1, Dy11, Yd1, and Yd11. 3. It lists the standard vector groups for transformer connections along with their phase displacement in degrees.

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ravi shankar
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139 views10 pages

Winding Connections

1. The document discusses different transformer winding connections including Delta (Δ) and Wye (Y) configurations. 2. It provides step-by-step instructions for connecting transformer windings in both Δ and Y configurations for different vector groups including Dy1, Dy11, Yd1, and Yd11. 3. It lists the standard vector groups for transformer connections along with their phase displacement in degrees.

Uploaded by

ravi shankar
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Transformer Connection

YDD
/ /Y
D/DY

1
Transformer Connection

y0
y11 y1
+30o -30o

2
How to Connect Windings

3
Dy 1 Delta Wye
A a
Step 1 a2

a1
c1 b1
c2 b2

C B c b
A
Step 2
A2 B1
a2

a1
A1 B2 c2 c1

b1
C B
C2 C1
b2

4
A

Step 3
A2 B1

A1 B2

C B
C2 C1

Step 4 D/Y
A2 A1 a1 a2
A a

B2 B1 b1 b2
B b

C2 C1 c1 c2
C c

5
Dy 11 Delta Wye
A a
Step 1 a2

a1
c1 b1
c2 b2

C B c b
A
Step 2
C1 A2
a2

C2 A1 a1
b1 b2

C B c1
B1 B2
c2

6
A

Step 3
C1 A2

C2 A1

C B
B1 B2

Step 4 D/Y
A2 A1 a1 a2
A a

B2 B1 b1 b2
B b

C2 C1 c1 c2
C c

7
Yd 11 Delta Wye
a A
Step 1 A2

A1
C1 B1
C21 B2

c b C B
A

A2
b1

A1
a2 b2

C1
C2 B1
a1 c1 B2

C B
c2

8
a
Step 3
a2 b1

a1 b2

c b
c2 c1

Step 4 D/Y
a2 a1 A1 A2
a A

b2 b1 B1 B2
b B

c2 c1 C1 C2
c C

9
Transformer Connections

Standard Vector Group

Phase Displacement Connection


Group
Clock No. Degrees

1 0 0 Yy0,Dd0
2 6 180o Yy6,Dd6
3 1 30o Lag Dy1, yd1
4 11 30o Lead Dy11,Yd11

10

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