220kV triple-winding on-load voltage regulation power transformer

Rated capacity (kVA)

Voltage combination and tap range

Bonding group

No-load loss (kW)

Load loss (kW)

Short circuit impedance (%)

No-load current (%)

High pressure

Medium pressure

Low pressure

31500

220±8 ×1.25%

69

115

121

6.36.6

10.511

35

37

38.5

YNyn0d11

44

162

High-Low

H-L

22-24

High-Medium

H-M

12-14

Medium-Low

M-L

7 to 9

0.77

40000

52

189

0.70

50000

60

225

0.63

63000

70

261

0.63

90000

10.5

11

35

37

38.5

92

351

0.56

120000

115

432

0.56

150000

135

513

0.49

180000

159

630

0.49

240000

193

780

0.45