MIL-HDBK-1133
1
APPENDIX D (Continued)
Table D-1 (Continued)
Individual Transformer Losses by Size
3
12,470GndY/7200
480Y/277
300
1050
3250
3
12,470GndY/7200
480Y/277
500
1600
5200
3
12,470GndY/7200
480Y/277
750
1800
8400
3
12,470GndY/7200
480Y/277
3750
6500
29000
3
12,470 delta
2400/4160Y/2400
1000
2443
9037
3
12,470 delta
2400/4160Y/2400
1500
3455
12261
3
12,470 delta
2400/4160Y/2400
2500
4956
18237
3
12,470 delta
2400/4160Y/2400
3750
6775
26325
3
12,470 delta
2400/4160Y/2400
5000
8800
33325
3
24,940 delta
2400/4160Y/2400
1000
2533
9055
3
24,940 delta
2400/4160Y/2400
1500
3625
11588
3
24,940 delta
2400/4160Y/2400
2500
5338
17875
3
24,940 delta
2400/4160Y/2400
3750
7075
26625
3
24,940 delta
2400/4160Y/2400
5000
8725
34825
3
34,500
12,000
7500
11600
50600
3
69,000
4160
3750
6500
29000
3
69,000
12,000
2500
4800
21800
3
69,000
12,000
3750
6500
29000
3
69,000
12,000
7500
11600
50600
3
69,000
12,000
10000
15000
65000
1
Although this table has value related to losses for older
existing transformers, it is not accurate for transformers
that the Navy has been procuring through NAVFAC guide
specifications such as NFGS-16272. The no load losses derived
from the NFGS are lower than those in this table. The load
losses for larger transformers derived from the NFGS are lower
than those in this table.
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