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Transformer Capacity
Required for Three-Phase Motors
Submersible Smallest KVA Rating - Each Transformer
Three-Phase
Motor HP Rating
Total Effective
KVA Required
Open WYE or DELTA
2 Transformers
WYE or DELTA
3 Transformers
1.5 3 21
24 21.5
35 32
57.5 53
7.5 10 7.5 5
10 15 10 5
15 20 15 7.5
20 25 15 10
25 30 20 10
30 40 25 15
40 50 30 20
50 60 35 20
60 75 40 25
75 90 50 30
100 120 65 40
125 150 85 50
150 175 100 60
175 200 115 70
200 230 130 75
Pump Motor KVA requirements only - does not include allowances for other loads.
This is also the KVA required for single phase motors.
Electrical Data
MS Motors
MS.book Page 31 Wednesday, January 26, 2005 3:25 PM