SECTION
BUCK-BOOST TRANSFORMERS
ACME ELECTRIC
•
MILWAUKEE, WI
•
800.334.5214
•
acmetransformer.com
96
{
See chart on page 101.
NOTE: Inputs and Outputs may be reversed; kVA capacity remains constant. All applications above bold face line are suitable for 50/60 Hz. All applications
below bold face line are suitable for 60 Hz only.
GROUP III
SINGLE PHASE
BOOSTING
Line Voltage
230
380 416
425
430
435
440 440 450 460
(Available)
Load Voltage
277
420 457
467
473
457
462 484 472 483
(Output)
CAT. NO.
Load kVA
0.29
0.44
0.48
0.49
0.49
0.95
0.96 0.50 0.98 1.01
T181061
Amps
1.04
1.04
1.04
1.04
1.04
2.08
2.08 1.04 2.08 2.08
Max. Size of
3
3
3
3
3
6
6
3
6
6
Fuse or Breaker
Load kVA
0.58
0.87
0.95
0.97
0.99
1.90
1.93 1.01 1.97 2.01
T181062
Amps
2.08
2.08
2.08
2.08
2.08
4.17
4.17 2.08 4.17 4.17
Max. Size of
6
6
6
6
6
10
10
6
10
10
Fuse or Breaker
Load kVA
0.87
1.31
1.43
1.46
1.48
2.86
2.89 1.51 2.95 3.02
T181063
Amps
3.13
3.13
3.13
3.13
3.13
6.25
6.25 3.13 6.25 6.25
Max. Size of
10
6
6
6
6
15
15
6
15
15
Fuse or Breaker
Load kVA
1.44
2.19
2.38
2.43
2.46
4.76
4.81 2.52 4.92 5.03
T181064
Amps
5.21
5.21
5.21
5.21
5.21
5.21 10.42 5.21 10.42 10.42
Max. Size of
15
10
10
10
10
15
15
10
15
15
Fuse or Breaker
Load kVA
2.89
4.38
4.76
4.86
4.93
9.52
9.62 5.04 9.83 10.06
T181065
Amps
10.42 10.42 10.42 10.42
10.42 20.83 20.83 10.42 20.83 20.83
Max. Size of
20
15
15
15
15
30
30
15
30
30
Fuse or Breaker
Load kVA
4.33
6.56
7.14
7.30
7.39 14.28 14.44 7.56 14.75 15.09
T181066
Amps
15.63 15.63 15.63 15.63
15.63 31.25 31.25 15.63 31.25 31.25
Max. Size of
25
25
25
25
25
45
45
25
45
45
Fuse or Breaker
Load kVA
5.77
8.57
9.52
9.73
9.85 19.04 19.25 10.08 19.67 20.13
T137920
Amps
20.83 20.83 20.83 20.83
20.83 41.67 41.67 20.83 41.67 41.67
Max. Size of
35
30
30
30
30
60
60
30
60
60
Fuse or Breaker
Load kVA
8.66 13.13 14.28 14.59
14.78 28.56 28.88 15.13 29.50 30.19
T137921
Amps
31.25 31.25 31.25 31.25
31.25 62.50 62.50 31.25 62.50 62.50
Max. Size of
50
50
45
45
45
90
90
45
90
90
Fuse or Breaker
Load kVA
11.54 17.50 19.04 19.46
19.71 38.08 38.50 20.17 39.33 40.25
T137922
Amps
41.67 41.67 41.67 41.67
41.67 83.33 83.33 41.67 83.33 83.33
Max. Size of
70
60
60
60
60
110
110
60
110 110
Fuse or Breaker
Load kVA
17.31 26.25 28.56 29.19
29.56 57.13 57.75 30.25 59.00 60.38
T137923
Amps
62.50 62.50 62.50 62.50
62.50 125.00 125.00 62.50 125.00 125.00
Max. Size of
100
90
90
90
90
175
175
90
175 175
Fuse or Breaker
Load kVA
28.90 43.80 47.60 48.60
49.30 95.20 96.20 50.40 98.30 100.60
T137924
Amps
104.20 104.20 104.20 104.20 104.20 208.30 208.30 104.20 208.30 208.30
Max. Size of
175
150
150
150
150
300
300
150
300 300
Fuse or Breaker
Load kVA
43.30 65.60 71.40 73.00
73.90 142.80 144.40 75.60 147.50 150.90
T243570
Amps
156.30 156.30 156.30 156.30 156.30 312.50 312.50 156.30 312.50 312.50
Max. Size of
250
225
225
225
225
450
450
225
450 450
Fuse or Breaker
Load kVA
57.70 87.50 95.20 97.30
98.50 190.40 192.50 100.80 196.70 201.30
T243571
{
Amps
208.30 208.30 208.30 208.30 208.30 416.70 416.70 208.30 416.70 416.70
Max. Size of
350
300
300
300
300
600
600
300
600 600
Fuse or Breaker
See Page 110 For
D
H
H
H
H
G
G
H
G
G
Connection Diagrams
BUCKING
277
480 480
504
230 436 456
480
0.29
0.50
1.05
1.10
1.25
1.15
2.29
2.29
3
3
6
6
0.58
1.00
2.09
2.20
2.50
2.29
4.58
4.58
6
6
10
10
0.86
1.50
3.14
3.30
3.75
3.44
6.88
6.88
6
6
15
15
1.44
2.50
5.23
5.50
6.25
5.73 11.46 11.46
10
10
15
15
2.88
5.00 10.45 11.00
12.50 11.46 22.92 22.92
15
15
30
30
4.31
7.49 15.68 16.50
18.75 17.19 34.38 34.38
20
20
45
45
5.75
9.99 20.90 22.00
25.00 22.92 45.83 45.83
30
30
60
60
8.63 14.99 31.35 33.00
37.50 34.38 68.75 68.75
40
40
90
90
11.50 19.98 41.80 44.00
50.00 45.83 91.67 91.67
60
60
110
110
17.25 29.98 62.70 66.00
75.00 68.80 137.50 137.50
80
80
175
175
28.80 50.00 104.50 110.00
125.00 114.60 229.20 229.20
150
150
300
300
43.10 74.90 156.80 165.00
187.50 171.90 343.80 343.80
200
200
450
450
57.50 99.90 209.00 220.00
250.00 229.20 458.30 458.30
300
300
600
600
J
I
E
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