110kV level capacity: 6300kV.A~63000kV.A three-phase three-winding on-load voltage regulating power transformer

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

Medium Voltage kV

Low voltage kV

6300

110±8×1.25%

36

37

38.5

6.3

6.6

10.5

21

YNyn0d11

5.3

40

0.76

High-Medium10.5

High-Low17.5-18.5

Medium-low 6.5

8000

6.3

48

0.76

10000

7.5

56

0.71

12500

8.9

67

0.71

16000

10.6

81

0.67

20000

12.5

95

0.67

25000

14.9

113

0.62

31500

17.7

134

0.62

40000

21.2

161

0.58

50000

25

192

0.58

63000

29.8

230

0.53

Note 1: On-load voltage regulating transformer, temporarily provide step-down structure products.

Note 2: The capacity allocation of high, medium and low voltage windings is (100/100/100)%.

Note 3: The label of the coupling group can be YNd11y10 as required.

Note 4: The-10% tap position is the maximum current tap.

Note 5: According to user requirements, the medium voltage can be different from the voltage value in the table or tap.

Note 6: When the annual average load rate of the transformer is about 47%, the highest operating efficiency can be obtained by using the loss values in the table.