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Buck-Boost Application manual 02-12
Page 15 of 21
3 Phase Open Delta
WIRING DIAGRAM #9 (57-A)
Part A (Transformer #1):
Step 1: Connect X2, X4 & HIGH VOLTAGE AØ-Phase together.
Step 2: Connect X1, X3, H2, H4 & LOW VOLTAGE AØ-Phase together.
Step 3: Connect H1 & H3 together.
Part B (Transformer #2):
Step 1: Connect X2, X4 & HIGH VOLTAGE CØ-Phase together.
Step 2: Connect X1, X3, H2, H4 & LOW VOLTAGE CØ-Phase together.
Step 3: Connect H1 & H3 together.
Part C:
Connect H1 from Transformer #1, H1 from Transformer #2, HIGH VOLTAGE
BØ-Phase & LV B-Phase together.
Transformer #1
Transformer #2