220kV triple-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

Medium pressure

Low pressure

Boost transformer

Buck transformer

31500

40000

220

242±2 ×2.5%

69

115

121

6.3

6.610.5

11

3537

38.5

YNyn0d11

40

162

High-Medium

H-M

22-24

High-Low

H-L

12 ~ 14

Medium-Low

M-L

7 ~ 9

High-Low

H-L

22-24

High-Medium

H-M

12 ~ 14

Medium-Low

M-L

7 ~ 9

0.70

48

189

0.63

50000

56

225

0.56

63000

66

261

0.56

90000

10.511

13.835

3738.5

86

351

0.49

120000

106

432

0.49

150000

1113.8

15.75

3537

38.5

125

513

0.42

180000

142

585

0.42

240000

176

720

0.35

300000

208

750

0.30