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B u c k - B o o s t T r a n s f o r m e r s
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BUCK-BOOST WIRING DIAGRAMS ① - SINGLE PHASE FOR THREE PHASE APPLICATIONS
INPUT ONLY
OUTPUT ONLY
1
2
3
1
2
3
H4
H3
H2
H1
X4
X3
X2 X1
H4
H3 H2
H1
X4
X3 X2 X1
H4
H3
H2
H1
X4
X3
X2
X1
TRANS. #1
TRANS. #2
TRANS. #3
NEUTRAL
H4
H1
H3
H2
X4
X1
X3
X2
INPUT
OUTPUT
1
2
3
1
2
3
H4
H3
H2
H1
X4
X3
X2
X1
TRANS. #2
TRANS. #1
H4
H1
H3
H2
X4
X1
X3
X2
INPUT
OUTPUT
1
2
3
1
2
3
H4
H3
H2
H1
X4
X3
X2
X1
TRANS. #1
TRANS. #2
H4
H1
H3
H2
X4
X1
X3
X2
INPUT
OUTPUT
1
2
3
1
2
3
H4
H3
H2
H1
X4
X3
X2
X1
TRANS. #1
TRANS. #2
FIG. AA WYE FIG. BB OPEN DELTA FIG. CC OPEN DELTA FIG. DD OPEN DELTA
BUCK-BOOST WIRING DIAGRAMS ① - SINGLE PHASE
H4
H1
H3
H2 X4
X1
X3
X2
INPUT
OUTPUT
H4 H1 H3 H2 X4
X1
X3
X2
INPUT
OUTPUT
H4 H1 H3 H2 X4
X1
X3
X2
INPUT
OUTPUT
H4 H1 H3 H2 X4 X1 X3 X2
INPUT
OUTPUT
H4
H1
H3
H2 X4 X1 X3 X2
INPUT
OUTPUT
H4
H1
H3
H2
X4
X1
X3
X2
INPUT
OUTPUT
H4 H1 H3 H2 X4 X1 X3 X2
INPUT
OUTPUT
H4
H1
H3
H2
X4 X1 X3 X2
INPUT
OUTPUT
Figure D
Figure F
Figure C
Figure E
Figure G Figure H
Figure J Figure I
① The symbol O used in these connection diagrams indicates where to field install the
over-current protective device, typically a fuse or circuit breaker.
BUCK-BOOST DIMENSIONAL DRAWINGS - SINGLE PHASE
Design A Design B Design C Design D Design J
D
H
W
D
H
W
D
H
W
D
H
W
D
H
W