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Power Transformer Distribution |
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| Buck-Boost Transformer Selection
Chart 120 x 240 Volts Primary–12/24 Volts Secondary |
| Single Phase | BOOSTING | BUCKING | |||||||||||||
| Line Voltage (Available) | 96 | 100 | 105 | 109 | 189 | 208 | 218 | 220 | 125 | 132 | 229 | 245 | 250 | 252 | |
| Load Voltage (Output) | 115 | 120 | 116 | 120 | 208 | 229 | 240 | 242 | 114 | 120 | 208 | 223 | 227 | 240 | |
| Click part # for info | Connection Diagram |
B | B | A | A | D | D | D | D | A | A | D | D | D | C |
| T-1-81047 | KVA Amps |
0.24 2.08 |
0.25 2.08 |
0.48 4.17 |
0.50 4.17 |
0.43 2.08 |
0.48 2.08 |
0.50 2.08 |
0.50 2.08 |
0.52 4.58 |
0.55 4.58 |
0.48 2.29 |
0.51 2.29 |
0.52 2.29 |
1.05 4.38 |
| T-1-81048 | KVA Amps |
0.48 4.17 |
0.50 4.17 |
0.96 8.33 |
1.00 8.33 |
0.87 4.17 |
0.95 4.17 |
1.00 4.17 |
1.01 4.17 |
1.04 9.17 |
1.10 9.17 |
0.95 4.58 |
1.02 4.58 |
1.04 4.58 |
2.10 8.75 |
| T-1-81049 | KVA Amps |
0.72 6.25 |
0.75 6.25 |
1.44 12.50 |
1.50 12.50 |
1.30 6.25 |
1.43 6.25 |
1.50 6.25 |
1.51 6.25 |
1.56 13.75 |
1.65 13.75 |
1.43 6.87 |
1.53 6.87 |
1.56 6.87 |
3.15 13.13 |
| T-1-81050 | KVA Amps |
1.20 10.42 |
1.25 10.42 |
2.41 20.83 |
2.50 20.83 |
2.17 10.42 |
2.38 10.42 |
2.50 10.42 |
2.52 10.42 |
2.60 22.92 |
2.75 22.92 |
2.39 11.46 |
2.55 11.46 |
2.60 11.46 |
5.25 21.88 |
| T-1-81051 | KVA Amps |
2.40 20.83 |
2.50 20.83 |
4.81 41.67 |
5.00 41.67 |
4.33 20.83 |
4.77 20.83 |
5.00 20.83 |
5.04 20.83 |
5.21 45.83 |
5.50 45.83 |
4.77 22.92 |
5.10 22.92 |
5.21 22.92 |
10.50 43.75 |
| T-1-81052 | KVA Amps |
3.60 31.25 |
3.75 31.25 |
7.22 62.50 |
7.38 62.50 |
6.50 31.25 |
7.15 31.25 |
7.49 31.25 |
7.56 31.25 |
7.81 68.75 |
8.25 68.75 |
7.16 34.37 |
7.66 34.37 |
7.81 34.37 |
15.75 65.63 |
| T-1-11683 | KVA Amps |
4.80 41.67 |
5.00 41.67 |
9.63 83.33 |
9.99 83.33 |
8.66 41.67 |
9.53 41.67 |
9.99 41.67 |
10.08 41.67 |
10.42 91.67 |
11.00 91.67 |
9.54 45.83 |
10.21 45.83 |
10.42 45.83 |
21.00 87.50 |
| T-1-11684 | KVA Amps |
7.20 62.50 |
7.50 62.50 |
14.44 125.00 |
14.99 125.00 |
12.99 62.50 |
14.30 62.50 |
14.99 62.50 |
15.13 62.50 |
15.62 137.50 |
16.50 137.50 |
14.31 68.75 |
15.31 68.75 |
15.62 68.75 |
31.50 131.25 |
| T-1-11685 | KVA Amps |
9.60 83.33 |
10.00 83.33 |
19.25 166.67 |
19.98 166.67 |
17.32 83.33 |
19.07 83.33 |
19.98 83.33 |
20.17 83.33 |
20.83 183.33 |
22.00 183.33 |
19.08 91.67 |
20.42 91.67 |
20.83 91.67 |
42.00 175.00 |
| T-1-11686 | KVA Amps |
14.40 125.00 |
15.00 125.00 |
28.88 250.00 |
29.98 250.00 |
25.99 125.00 |
28.60 125.00 |
29.98 125.00 |
30.25 125.00 |
31.25 275.00 |
33.00 275.00 |
28.62 137.50 |
30.62 137.50 |
31.25 137.50 |
63.00 262.50 |
| T-1-11687 | KVA Amps |
24.00 208.33 |
25.00 208.33 |
48.13 416.67 |
49.96 416.67 |
43.31 208.33 |
47.67 208.33 |
49.96 208.33 |
50.42 208.33 |
52.08 458.33 |
55.00 458.33 |
47.71 229.17 |
51.04 229.17 |
52.08 229.17 |
105.00 437.50 |
| Click part # for info | Connection Diagram |
B | B | A | A | D | D | D | D | A | A | D | D | D | C |
| Output for lower voltage can be found by: | Rated Output Voltage Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. | |
| Output KVA available at reduced voltage can be found by: | Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. | |
| Buck-Boost Transformer Selection
Chart 120 x 240 Volts Primary–12/24 Volts Secondary |
| Three Phase | BOOSTING | BUCKING | |||||||||||||
| Line Voltage (Available) | 189Y 109 |
195Y 113 |
200Y 115 |
208Y 120 |
416Y 240 |
416Y 240 |
189 | 208 | 220 | 218 | 229 | 250 | 255 | 264 | |
| Load Voltage (Output) | 208Y 120 |
234Y 135 |
240Y 139 |
229Y 132 |
458Y 264 |
437Y 252 |
208 | 229 | 242 | 208 | 208 | 227 | 232 | 240 | |
| Click part # for info | Connection Diagram |
F | E | E | F | J | K | G | G | G | H | G | G | G | G |
| T-1-81047 | KVA Amps |
1.50 4.17 |
0.84 2.08 |
0.87 2.08 |
1.65 4.17 |
1.65 2.08 |
3.15 4.17 |
0.75 2.08 |
0.83 2.08 |
0.87 2.08 |
1.57 4.38 |
0.83 2.29 |
0.90 2.29 |
0.92 2.29 |
0.95 2.29 |
| T-1-81048 | KVA Amps |
3.00 8.33 |
1.69 4.17 |
1.73 4.17 |
3.30 8.33 |
3.30 4.17 |
6.30 8.33 |
1.50 4.17 |
1.65 4.17 |
1.75 4.17 |
3.15 8.75 |
1.65 4.58 |
1.80 4.58 |
1.84 4.58 |
1.91 4.58 |
| T-1-81049 | KVA Amps |
4.50 12.50 |
2.53 6.25 |
2.60 6.25 |
4.95 12.50 |
4.95 6.25 |
9.46 12.50 |
2.25 6.25 |
2.48 6.25 |
2.62 6.25 |
4.72 13.13 |
2.48 6.87 |
2.71 6.87 |
2.76 6.88 |
2.86 6.88 |
| T-1-81050 | KVA Amps |
7.50 20.83 |
4.22 10.42 |
4.33 1.42 |
8.26 20.83 |
8.26 10.42 |
15.76 10.42 |
3.75 10.42 |
4.13 10.42 |
4.37 10.42 |
7.87 21.88 |
4.13 11.46 |
4.51 11.46 |
4.60 11.46 |
4.76 11.46 |
| T-1-81051 | KVA Amps |
15.00 41.67 |
8.44 20.83 |
8.66 20.83 |
16.51 41.67 |
16.51 20.83 |
31.52 241.67 |
7.50 20.83 |
8.26 20.83 |
8.73 20.83 |
15.73 43.75 |
8.26 22.92 |
9.02 22.92 |
9.20 22.92 |
9.53 22.92 |
| T-1-81052 | KVA Amps |
22.51 62.50 |
12.67 31.25 |
12.99 31.25 |
24.77 62.50 |
24.77 31.25 |
47.28 62.50 |
11.25 31.25 |
12.38 31.25 |
13.10 31.25 |
23.60 65.63 |
12.39 34.37 |
13.53 34.37 |
13.80 34.37 |
14.29 34.38 |
| T-1-11683 | KVA Amps |
30.01 83.33 |
16.89 41.67 |
17.32 41.67 |
33.02 83.33 |
33.02 41.67 |
63.05 83.33 |
15.00 41.67 |
16.51 41.67 |
17.46 41.67 |
31.47 87.50 |
16.53 45.83 |
18.04 45.83 |
18.40 45.83 |
19.05 45.83 |
| T-1-11684 | KVA Amps |
45.01 125.00 |
25.33 62.50 |
25.98 62.50 |
49.54 125.00 |
49.54 62.50 |
94.57 125.00 |
22.51 62.50 |
24.77 62.50 |
26.20 62.50 |
47.20 131.25 |
24.79 68.75 |
27.06 68.75 |
27.60 68.75 |
28.58 68.75 |
| T-1-11685 | KVA Amps |
60.02 166.67 |
33.77 83.33 |
34.64 83.33 |
66.05 166.67 |
66.05 83.33 |
126.09 166.67 |
30.01 83.33 |
33.02 83.33 |
34.93 83.33 |
62.93 175.00 |
33.05 91.67 |
36.08 91.67 |
36.81 91.67 |
38.11 91.67 |
| T-1-11686 | KVA Amps |
90.02 250.00 |
50.66 125.00 |
51.96 125.00 |
99.07 250.00 |
99.07 125.00 |
189.14 250.00 |
45.01 125.00 |
49.54 125.00 |
52.39 125.00 |
94.40 262.50 |
49.58 137.50 |
54.13 137.50 |
55.21 137.50 |
57.16 137.50 |
| T-1-11687 | KVA Amps |
150.04 416.67 |
84.44 208.33 |
86.60 208.33 |
165.12 416.67 |
165.12 208.33 |
315.23 416.67 |
75.02 208.33 |
82.56 208.33 |
87.32 208.33 |
157.33 437.50 |
82.63 229.17 |
90.21 229.17 |
92.02 229.17 |
95.26 229.17 |
| No. of Transformers | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | |
| Catalog Number | Connection Diagram |
F | E | E | F | J | K | G | G | G | H | G | G | G | G |
| Output for lower voltage can be found by: | Rated Output Voltage Rated Input Voltage |
x Input Actual Voltage = Output New Voltage. | |
| Output KVA available at reduced voltage can be found by: | Actual Input Voltage Rated Input Voltage |
x Output KVA = New KVA Rating. | |
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And by other professional trucking companies. |
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