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Jefferson Electric Inc.
1-800-892-3755
www.jeffersonelectric.com
Buck-Boost Application manual 02-12
Page 6 of 21
Open Delta Chart (requires 2 transformers)
Low
Voltage
(LV)
High
Voltage
(HV)
Catalog
Number
Load
Required
01 11 21 31 41 51 61 71 81 91
New
Diagram #
Old
Diagram #
416-
KVA
0.86
1.29
2.1 4.3 6.4 8.6
12.9
17.2
25.0
43.0
200
240
14xx
Amperes 2.1 3.1 5.1 10.3
15.4
20.7 31.0 41.4 60.1
103
10
57-B
416-
KVA
1.27
1.91
3.1 6.3 9.5 12.7 19.1 25.5 38.2
63.7
208
236
12xx
Amperes 3.1 4.7 7.6 15.4
23.2
31.1 46.7 62.4 93.4
156
12
57-D
416-
KVA
1.29
1.94
3.2 6.4 9.7 12.9 19.4 25.8 38.0
64.0
212
240
12xx
Amperes 3.1 4.7 7.7 15.4
23.3
31.0 46.7 62.1 91.4
154
12
57-D
416-
KVA
1.65
2.47
4.1
8.2
12.3
16.5 24.7 33.0 49.5
82.5
208 230 11xx
Amperes
4.1
6.2
10.3
20.6
30.9
41.4 62.0 82.8 124 207
12
57-D
416-
KVA
1.73
2.59
4.3
8.6
12.9
17.3 25.9 34.6 51.0
86.0
218 240 11xx
Amperes
4.2
6.2
10.3
20.7
31.0
41.6 62.3 83.2 123 207
12
57-D
416-
KVA
2.59
3.89
6.4
12.9
19.4
25.9 38.9 51.9 77.0
129
225 240 12xx
Amperes
6.2
9.4
15.4
31.0
46.7
62.3 93.6 124.8
185 310
11
57-C
416-
KVA
3.46
5.18
8.6
17.3
25.9
34.6 51.8 69.2 103 173
229 240 11xx
Amperes
8.3
12.5
20.7
41.6
62.3
83.2 124.6
166.5
248 416
11
57-C
416-
KVA
1.81
2.72
4.5
9.0
13.6
18.1 27.2 36.3 54.0
90.0
230 253 14xx
Amperes
4.1
6.2
10.3
20.5
31.0
41.3 62.1 82.8 123 205
9
57-A
416-
KVA
0.99
1.49
2.4 4.9 7.4 9.9
14.9
19.9
29.0
49.0
230
276
14xx
Amperes 2.1 3.1 5.0 10.2
15.5
20.7 31.2 41.6 60.7
103
10
57-B
416-
KVA
3.64
5.47
9.1
18.2
27.2
36.4 54.7 72.8 109 182
240 252 11xx
Amperes
8.3
12.5
20.8
41.7
62.3
83.4 125.3
166.8
250 417
11
57-C
416-
KVA
1.9
2.86
4.7
9.5
14.2
19.0 28.6 38.1 57.0
95.0
240 264 11xx
Amperes
4.2
6.3
10.3
20.8
31.1
41.6 62.5 83.3 125 208
12
57-D
416-
KVA
1.47
2.2 3.6 7.3 11.0
14.7 22.0 29.4 44.1
73.6
240
272
12xx
Amperes 3.1 4.7 7.6 15.5
23.3
31.2 46.7 62.4 93.6
156
12
57-D
416-
KVA
1.03
1.55
2.5 5.1 7.7 10.3 15.5 20.7 31.0
51.0
240
288
14xx
Amperes 2.1 3.1 5.0 10.2
15.4
20.6 31.1 41.5 62.1
102
10
57-B
416-
KVA
1.73
2.59
4.3
8.6
12.9
17.3 25.9 34.6 51.0
86.0
437
480
14xx
Amperes 2.1 3.1 5.2 10.3
15.5
20.8 31.2 41.6 61.3
103
12
57-D
416-
KVA
3.46
5.18
8.6
17.3
25.9
34.6 51.8 69.2 103 173
457 480 14xx
Amperes
4.2
6.2
10.3
20.8
31.2
41.6 62.3 83.2 124 208
11
57-C