As I don't use these special Voltages, I can give you an idea about that I used for some special applications where the Voltages are " 13.2 KV & 420 V " and the manufacter is " Zucchini Italy ".

- 100kVA : Po : 380W, Pt(+70C) : 1800W

- 160kVA : Po : 480W, Pt(+70C) : 2550W

- 250kVA : Po : 750W, Pt(+70C) : 3120W

- 315kVA : Po : 1050W, Pt(+70C) : 4050W

- 400kVA : Po : 1320W, Pt(+70C) : 5000W

- 500kVA : Po : 1630W, Pt(+70C) : 5960W

Where :

Po : the Losses without load

Pt(+70C) : the losseswith ful load at " +70C "

For " 11 kV " :- 630kVA : Po : 1790W, Pt(+70C) : 6940W

- 800kVA : Po : 2470W, Pt(+70C) : 8370W

- 1000kVA : Po : 2940W, Pt(+70C) : 9800W

- 1250kVA : Po : 3520W, Pt(+70C) : 11800W

- 1600kVA : Po : 3890W, Pt(+70C) : 14400W

- 2000kVA : Po : 4830W, Pt(+70C) : 17100W

- 2500kVA : Po : 5990W, Pt(+70C) : 20700W

- 3200kVA : Po : 4600W, Pt(+70C) : 23400W

For "33 kV " :- 630kVA : Po : 2100W, Pt(+70C) : 6750W

- 800kVA : Po : 2580W, Pt(+70C) : 8370W

- 1000kVA : Po : 2800W, Pt(+70C) : 9280W

- 1250kVA : Po : 3000W, Pt(+70C) : 12350W

- 1600kVA : Po : 3600W, Pt(+70C) : 14600W

- 2000kVA : Po : 4600W, Pt(+70C) : 16200W

- 2500kVA : Po : 5780W, Pt(+70C) : 19800W

- 3200kVA : Po : 6620W, Pt(+70C) : 22500W

Where :

Po : the Losses without load

Pt(+70C) : the losseswith ful load at " +70C "

Noting that values are for " Zucchini Italy " transformers, and there's some differences between manufactures.