Transformer Capacity Required For Three-Phase Submersible Pump Motors - Grundfos SP Series Installation And Operating Instructions Manual

7.3 Transformer capacity required for three-phase
submersible pump motors
3-phase
motor
[hp]
1.5
2
3
5
7.5
10
15
20
25
30
40
50
60
75
100
125
150
200
Notes:
• Pump motor KVA requirements only, and does not include allowances for other loads.
20
Minimum
total KVA
required*
2 transformers
Open Delta or Wye
3
4
5
7.5
10
15
20
25
30
40
50
60
75
90
120
150
175
230
Minimum KVA rating
for each transformer
3 transformers
Delta or Wye
2
2 1.5
3
5
7.5
10
15 7.5
15 10
20 10
25 15
30 20
35 20
40 25
50 30
65 40
85 50
100 60
130 75
1
2
3
5
5