HPS DH Serie Guía De Instalación, Operación Y Mantenimiento página 14

Full Load Current Table
Single Phase Transformer
Current in Amperes
kVA 120V 240V 480V 600V 2400V 4160V
0.50 4.17 2.08 1.04
0.75 6.25 3.13 1.56
1.0 8.33 4.17 2.08
1.5 12.5 6.25 3.13
3.0 25.0 12.5 6.25
5.0 41.7 20.8 10.4
7.5 62.5 31.3 15.6
10 83.3 41.7 20.8
15 125 62.5 31.3
25 208 104 52.1
37.5 313 156 78.1
50 417 208 104
75 625 313 156
100 833 417 208
150 1250 625 313
167 1392 696 348
250 2083 1042 521
333 2775 1388 694
Installation, Operation, and Maintenance Guide - Low Voltage Transformers
APPENDIX A
AMPACITY RATINGS FOR CONNECTIONS
A. For a single phase transformer
Line Amperes = Volt Amperes
Line Volts
B. For a three phase transformer
Line Amperes =
1.732 X Line Volts
0.83 - -
1.25 - -
1.67 - -
2.50 - -
5.00 1.25 0.72
8.33 2.08 1.20
12.5 3.13 1.80
16.7 4.17 2.40
25.0 6.25 3.61
41.7 10.4 6.01
62.5 15.6 9.01
83.3 20.8 12.0
125 31.3 18.0
167 41.7 24.0
250 62.5 36.0
278 69.6 40.1
417 104 60.1
555 139 80.0
Volt Amperes
Full Load Current Table
Three Phase Transformer
Current in Amperes
kVA 208V 240V
3 8.33 7.22
6 16.7 14.4
9 25.0 21.7
15 41.6 36.1
30 83.3 72.2
45 125 108
75 208 180
100 278 241
112.5 312 271
150 416 361
225 625 541
300 833 722
450 1249 1082
500 1388 1203
600 1665 1443
750 2082 1804
1000 2776 2406
1500 4164 3609
2000 5552 4811
2500 6940 6014
3000 8327 7217
480V 600V 2400V
3.61 2.89 0.72
7.22 5.77 1.44
10.8 8.66 2.17
18.0 14.4 3.61
36.1 28.9 7.22
54.1 43.3 10.8
90.2 72.2 18.0
120 96.2 24.1
135 108 27.1
180 144 36.1
271 217 54.1
361 289 72.2
541 433 108
601 481 120
722 577 144
902 722 180
1203 962 241
1804 1443 361
2406 1925 481
3007 2406 601
3608 2887 722
14
4160V
0.42
0.83
1.25
2.08
4.16
6.25
10.4
13.9
15.6
20.8
31.2
41.6
62.4
69.4
83.3
104
139
208
278
347
416