220kV double-winding no-load voltage regulation power transformer

Rated capacity

(kVA)

Voltage combination and tap range

(kV)

Bonding group

No-load loss

(kW)

Load loss

(kW)

Short circuit impedance

(%)

No-load current

(%)

High pressure

Low pressure

31500

220

242±2x 2.5%

6.3

6.6

10.5

11

YNd11

35

135

12-14

0.70

40000

41

157

0.70

50000

49

189

0.65

63000

58

220

0.65

75000

10.5

11

13.8

67

250

0.60

90000

77

288

0.55

120000

94

345

0.55

150000

11;13.8;

15.75;20

112

405

0.50

180000

128

459

0.46

240000

160

567

0.42

300000

15.75;

18;20

189

675

0.38

360000

217

774

0.38