630kVA-31500kVA Three-Phase Double-Winding No-Load Voltage Regulation Power Transformer

Rated capacity (kVA)

Voltage combination and tap range

Connection Group Label

No-load loss kW(9)

Load loss kW(9)

No-load current%

Short circuit impedance%

High voltage kV

High voltage tap range

Low voltage kV

630

35

±2×2.5%±5

3.15

6.3

10.5

Yd11

0.830

7.86

0.65

6.5

800

0.980

9.40

0.65

1000

1.15

11.5

0.65

1250

1.40

13.9

0.55

1600

1.69

16.6

0.45

2000

2.17

18.3

0.45

2500

2.56

19.6

0.45

3150

35-38.5

±2×2.5%±5

3.15

6.3

10.5

3.04

23.0

0.45

7.0

4000

3.61

27.3

0.45

5000

4.32

31.3

0.45

6300

5.24

35.0

0.45

8000

35-38.5

± ×2.5%

3.15

3.3

6.3

6.6

10.5

YNd11

7.20

38.4

0.35

8.0

10000

8.70

45.3

0.35

12500

10.0

53.8

0.30

16000

12.1

65.8

0.30

20000

14.4

79.5

0.30

25000

17.0

94.0

0.25

10.0

31500

20.2

112

0.25