Rockwill Electric Group
220kV Power Transformer
220kV three-phase oil immersed on-load voltage regulating transformer brings about a s ...

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 Power Transformer drawing

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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