220kV three-phase oil immersed on-load voltage regulating power transformer. It is characteristic of compact construction, low weight, high efficiency, low loss and low noise, reliability of performance.
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 | |||||
