Rated capacity kV · A

Voltage combination level grading range

Bonding Group Label

No-load loss kW

Load loss kW

No-load current %

Short circuit impedance %

High pressure classification range kV

High pressure kv

Low voltage kV

30

±2×2.5±5

6

6.3

10

10.5

0.4

Dyn11

Yzn11

Yyn0

0.065

0.455/0.43

1.5

4

50

0.08

0.655/0.625

1.3

63

0.09

0.785/0.745

1.2

80

0.105

0.945/0.9

1.2

100

0.12

1.14/1.08

1.1

125

0.135

1.36/1.295

1.1

160

0.16

1.665/1.585

1

200

0.19

1.97/1.87

1

250

0.23

2.3/2.195

0.9

315

0.27

2.76/2.63

0.9

400

0.33

3.25/3.095

0.8

500

0.385

3.9/3.71

0.8

630

Dyn11

Yyn0

0.46

4.46

0.6

800

0.56

5.4

0.6

4.5

1000

0.665

7.415

0.6

1250

0.78

8.64

0.5

1600

0.94

10.44

0.5

2000

1.085

13.18

0.4

5

2500

1.28

13.36

0.4

Note 1: For Transformers with rated capacity of 500kV·A and below, the load loss value above the slash in the table is applicable to Dynll or Yznll Connection Group, and the load loss value below the slash is applicable to Yyn0 connection group.

Note 2: When the annual average load rate of the transformer is between 35% and 40%, the highest operating efficiency can be obtained by using the loss values in the table.