Much smaller transformers may be used in Buck - Boost applications, since the size of the transformer is roughly proportional to the change in voltage. I.E.: A 10KVA load at 240v can be increased to 264v, a 10% change can be achieved with a 1KVA transformer.
Rating | Voltage Change Table | Transformer Multiplier Table | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A1 | A2 | B1 | B2 | C1 | C2 | D1 | D2 | A1 | A2 | B1 | B2 | C1 | C2 | D1 | D2 | |
120/240 X 12/24 | 1.10 | .90 | 1.20 | .80 | 1.05 | .95 | 1.10 | .90 | .10 | .11 | .20 | .24 | .05 | .05 | .10 | .11 |
120/240 X 16/32 | 1.13 | .87 | 1.27 | .77 | 1.07 | .93 | 1.13 | .87 | .13 | .15 | .27 | .34 | .07 | .07 | .13 | .15 |
240/480 X 24/48 | 1.10 | .90 | 1.20 | .80 | 1.05 | .95 | 1.10 | .90 | .10 | .11 | .20 | .24 | .05 | .05 | .10 | .11 |
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A1: Boosting |
A2: Bucking |
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B1: Boosting |
B2: Bucking |
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C1: Boosting |
C2: Bucking |
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D1: Boosting |
D2: Bucking |