35kV Class 630kVA ~ 31500kVA Three-phase Double-winding Off-circuit Tap Changer Power Transformer

Rated capacity (kVA)

Voltage combination and tap range

Bonding Group Label

Level 1 Energy Efficiency

Level 2 Energy Efficiency

Level 3 Energy Efficiency

Short circuit impedance (%)

High voltage (kV)

High voltage tap range (%)

Low voltage (kV)

No-load loss (kW)

Load loss (kW)

No-load loss (kW)

Load loss (kW)

No-load loss (kW)

Load loss (kW)

630

35

± 2 × 2.5±5

3.15

6.3

10.5

Yd11

0.51

6.19

0.6

6.19

0.72

6.55

6.5

800

0.61

7.41

0.72

7.41

0.86

7.83

1000

0.72

8.75

0.85

8.75

1.02

9.26

1250

0.85

10.35

1

10.35

1.2

10.95

1600

1.02

12.45

1.2

12.45

1.44

13.18

2000

1.21

14.72

1.42

14.72

1.71

15.58

2500

1.43

17.41

1.68

17.41

2.02

18.41

3150

35 to 38.5

± 2 × 2.5±5

3.15

6.3

10.5

1.7

20.7

2.0

20.7

2.4

21.9

7.0

4000

2.0

24.6

2.3

24.6

2.9

25.9

5000

2.4

28.2

2.8

28.2

3.5

29.7

6300

2.9

31.5

3.4

31.5

4.2

33.3

8.0

8000

35 to 38.5

± 2 × 2.5

3.15

3.3

6.3

6.6

10.5

YNd11

4.0

34.6

4.7

34.6

5.8

36.5

10000

4.8

40.8

5.7

40.8

7.0

43.0

12500

5.5

48.4

6.5

48.4

8.0

51.1

16000

6.7

59.2

7.9

59.2

9.7

62.5

20000

7.9

71.6

9.4

71.6

11.5

75.5

25000

9.4

84.6

11.1

84.6

13.6

89.3

10.0

31500

11.1

100.8

13.1

100.8

16.2

106.4

Note: 1. For transformers with low voltage of 10.5kV, products with connection group label Dyn11 can be provided;

2. Transformers with various special parameters and performance can be manufactured according to user requirements.