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220kV Power Transformer
220kV three-phase oil immersed on-load voltage regulating transformer brings about…
220kV Power Transformer

220kV Power Transformer

Detailed description

  • Description
  • technical data

220kV three-phase oil immersed on-load voltage regulating transformer brings about a series of major transformations in terms of material, technique and construction. It is characteristic of compact construction, low weight, high efficiency, low loss and low noise, reliability of performance. The product can reduce considerable loss on energy grid and operational costs and extend distinct economic efficacy.

It is suitable for power plant, transformer substation, and large-scale industrial and chemistry factory and etc. the product is according to national and IEC standards.


Environmental Conditions

1. Type: outdoor
2. Ambient temperature: max. temperature: +40℃; min. temperature: -30℃
3. Altitude: ≤1000m (temperature rise shall be corrected when>1000m)
4. Relative humidity: ≤90% (25℃)
5. Installation place: without corrosive gas and apparent fouling.

220kV Three-phase Duplex-winding Non-field Excitation Changing Power Transformer

Rated capacity

(kVA)

Voltage ratio

Vector group

No-load loss

(kW)


load loss

(kW)

No-load current

(%)


Short circuit impedance

(%)


HV

LV

31500

220±2×2.5%

242±2×2.5%

6.3

6.6

10.5

YNd11

28.0

128

0.56

12-14

40000

32.0

149

0.56

50000

39.0

179

0.52

63000

46.0

209

0.52

75000

10.5

13.8

53.0

237

0.48

90000

64.0

273

0.44

120000

75.0

338

0.44

150000

10.5、13.8

15.75

18、20

89.0

400

0.40

160000

93.0

420

0.39

180000

102

459

0.36

240000

128

538

0.33

300000

15.75

18

20

154

641

0.30

360000

173

735

0.30

370000

176

750

0.30

400000

187

795

0.28

420000

193

824

0.28

Above mentioned parameter are only for reference, ROCKWELL is able to design products according to specific requirementsfrom end users.


220kV Three-phase Three-winding Non-field Excitation Changing Power Transformer

Rated capacity(KVA) voltage combination and range of tapping Vector group no-load loss(KW) Load loss(KW) No-load current(%) short circuit impedance(%)
HV MV LV step up step down
31500 220±2*2.5%;230±2*2.5%;242±2*2.5%; 69;115;121 6.3/6.6/10.5/21/36/37/38.5 YNyn0d11 32 153 0.56 HV-MV:22-24;HV-LV:12-14;MV-LV:7-9 HV-MV:12-14;HV-LV:22-24;MV-LV:7-9
40000 38 183 0.5
50000 44 216 0.44
63000 52 257 0.44
90000 10.5/13.8/21/36/37/38.5 68 333 0.39
120000 84 410 0.39
150000 10.5/13.8/15.75/21/36/37/38.5 100 487 0.33
180000 113 555 0.33
240000 140 684 0.28
300000 166 807 0.24

Above mentioned parameter are only for reference, ROCKWELL is able to design products according to specific requirementsfrom end users



220kV Low Voltage 66kV Three-phase Duplex-winding Non-field Excitation Changing Power Transformer

Rated capacity(KVA) voltage combination and range of tapping Vector group no-load loss(KW) Load loss(KW) No-load current(%) short circuit impedance(%)
HV LV
31500 220±2*2.5%;230±2*2.5%; 63,66,69 Ynd11 30 143 0.71

12-14

40000 36 167 0.71
50000 42 200 0.65
63000 50 234 0.65
90000 66 306 0.6
120000 81 367 0.6
150000 97 430 0.54
180000 110 487 0.54
240000 136 603 0.48

Above mentioned parameter are only for reference, ROCKWELL is able to design products according to specific requirements from end users.


220kV Three-phase Three-winding Non-field Excitation Changing Self-coupled Power Transformer

Rated capacity(KVA) voltage combination and range of tapping Vector group step up combination Step down combination short circuit impedance
HV MV LV no-load loss(KW) Load loss(KW) No-load current no-load loss(KW) Load loss(KW) No-load loss step up step down
31500 220±2*2.5%;230±2*2.5%;242±2*2.5%; 115,121 6.6/10.5/21/36/37/38.5 YNa0d11 20 111 0.45 17 94 0.4 HV-MV:12-14;HV-LV:8-12;MV-LV:14-18 HV-MV:8-10;HV-LV:28-34;MV-LV:18-24
40000 23 136 0.45 20 114 0.4
50000 27 161 0.4 24 136 0.34
63000 32 190 0.4 28 162 0.34
90000 40 262 0.34 36 222 0.28
120000 10.5/13.8/15.75/18/21/36/37/38.5 49 323 0.34 44 273 0.28
150000 58 384 0.28 52 324 0.26
180000 67 439 0.28 60 367 0.26
240000 79 545 0.26 71 478 0.2
Above mentioned parameter are only for reference, ROCKWELL is able to design products according to specific requirementsfrom end users.

220kV Three Phase Double Windings Power Transformer With On Load Tap Changer

Rated capacity(KVA) voltage combination and range of tapping Vector group no-load loss(KW) Load loss(KW) No-load current(%) short circuit impedance(%)
HV LV
31500 220±2*2.5%;230±2*2.5%; 6.3/6.6/10.5/21/36/37/38.5 Ynd11 30 128 0.57

12-14

40000 36 149 0.57
50000 43 179 0.53
63000 50 209 0.53
90000 64 273 0.45
120000 10.5/21/36/37/38.5 79 338 0.45
150000 92 400 0.41
180000 108 459 0.38
120000 81 337 0.45
150000 66;69 96






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