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)

30

6

6.3

10

10.513.8

± 5% or ± 2 × 2.5%

0.4

0.433

0.48

0.57

0.69

Dyn11/Yyn0

0.065

0.455/0.43

0.07

0.505/0.48

0.08

0.63/0.60

4

50

0.08

0.655/0.625

0.09

0.73/0.695

0.1

0.91/0.87

100

0.12

1.14/1.08

0.135

1.265/1.20

0.15

1.58/1.50

160

0.16

1.665/1.585

0.18

1.85/1.76

0.2

2.31/2.20

200

0.19

1.97/1.87

0.215

2.185/2.08

0.24

2.73/2.60

315

0.27

2.76/2.63

0.305

3.065/2.92

0.34

3.83/3.65

400

0.33

3.25/3.095

0.37

3.615/3.44

0.41

4.52/4.3

500

0.385

3.90/3.71

0.43

4.33/4.12

0.48

5.41/5.15

630

Dyn11/Yyn0

0.46

4.46

0.51

4.96

0.57

6.2

4.5 or 6

800

0.56

5.4

0.63

6

0.7

7.5

1000

0.665

7.415

0.745

8.24

0.83

10.3

1250

0.78

8.64

0.87

9.6

0.97

12

200

± 4 × 2.5%±2 × 2.5%

0.243

2.755

0.27

2.9

0.3

2.9

4

315

0.34

3.895

0.38

4.1

0.42

4.1

400

0.41

4.703

0.46

4.95

0.51

4.95

630

0.614

6.897

0.69

7.26

0.76

7.26

4.5 or 6

800

0.71

8.45

0.8

8.89

0.89

8.89

Note: 1. Transformers with special performance parameters can be manufactured according to requirements;

2. For transformers with capacity ≤ 500kVA, the load loss value above the diagonal line in the table is applicable to Dyn11, and the value below the diagonal line is applicable to Yyn0;

3. For non-excitation voltage regulating transformer, the no-load current value above the oblique line in the table is the standard value of GB/T 6451-2015, and the value below the oblique line is the value required by the special technical specification of the national grid procurement standard.