CEEG has independently developed a new type of high-temperature resistant transformer that adopts a hybrid insulation structure. The hotspots within the device use DuPont's Nomex insulation material (Class C heat resistance) and mineral oil. This design truly meets the operational requirements of "high overload, safety, and reliability" throughout its lifecycle. This product is an excellent choice for users with particularly high transformer requirements or those seeking upgrades and expansions (possibly based on existing transformers).
Utility Model Patents and Invention Patents:
1. 110kV Transformer Body Lifting Structure: ZL2008 20238182.6
2. 110kV Plug-in Cable Terminal Transformer Body Lead Structure: ZL200820159647.9
3. 110kV Power Transformer On-load Tap-Changing Structure: ZL2010 29044115.5
4. Current Transformer Structure for Transformer Winding Temperature Measurement: ZL2010 29044111.7
5. Magnetic Shielding Structure for Large Capacity Transformers: ZL2010 2 0635851.0
These utility model and invention patents have significantly promoted and enhanced the quality control and performance of China Electric Power Equipment & Technology Co., Ltd.’s 110kV to 220kV products, laying a solid foundation for product innovation and development.
SSZ18-220KV 31500KVA-240000KVA Three Phase Three Winding OLTC Power Transformer |
Rated Capacity (KVA) | Voltage Combination and Tapping Range | Vector Group | No Load Loss (KW) | Load Loss (KW) | No Load Current (%) | Capacity Allocation (%) | Impedance (%) |
HV (KV) | MV (KV) | LV(KV) |
31500 | 220±8x1.25%
230±8x1.25% | 69 115 121 | 6.3 6.6 10.5 21 36 37 38.5 | YNyn0d11 | 28 | 145 | 0.77 | 100/100/100 100/50/100 100/100/50 | HV-MV 12-14 HV-LV 22-24 MV-LV 7-9 |
40000 | 33 | 174 | 0.73 |
50000 | 38 | 205 | 0.74 |
63000 | 45 | 244 | 0.69 |
90000 | 10.5 21 36 37 38.5 | 58 | 315 | 0.54 |
120000 | 74 | 390 | 0.54 |
150000 | 86 | 463 | 0.48 |
180000 | 99 | 568 | 0.48 |
240000 | 120 | 704 | 0.43 |
Note: 1. The data isted in the table are applicable to step-down structure products, and step-up structure products can also be provided as required; 2. Transformer with low voltage of 35kV can also be provided according to requirements; 3. When the annualload rate of transformer is between 45% and 50%,the highest operation efficiency can be obtained by using theloss value in the table. |
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SZ22-220KV 31500KVA-240000KVA Three Phase Double Winding OLTC Power Transformer |
Rated Capacity (KVA) | Voltage Combination and Tapping Range | Vector Group | No Load Loss (KW) | Load Loss (KW) | No Load Current (%) | Impedance (%) |
HV (KV) | LV (KV) |
31500 | 220±8x1.25% 230±8x1.25% | 6.3 6.6 10.5 21 36 37 38.5 | YNd11 | 20 | 115 | 0.48 | 12-14 |
40000 | 23 | 134 | 0.5 |
50000 | 28 | 161 | 0.45 |
63000 | 33 | 188 | 0.45 |
90000 | 42 | 246 | 0.38 |
120000 | 10.5 21 36 37 38.5 | 51 | 304 | 0.38 |
150000 | 60 | 360 | 0.35 |
180000 | 70 | 413 | 0.32 |
120000 | 66
69 | 53 | 303 | 0.38 |
150000 | 62 | 355 | 0.37 |
180000 | 73 | 406 | 0.32 |
240000 | 91 | 504 | 0.25 |
Note: 1. Transformer with low voltage of 35kV can also be provided according to reauirements. 2, When the annual average oad rate of transformer is about 50%, the highest operation eficiency can be obtained by using the ossvalue in the table. |
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S22-220KV 31500KVA-420000KVA Three Phase Double Winding Non-Excitation Voltage Regulating Power Transformer |
Rated Capacity (KVA) | Voltage Combination and Tapping Range | Vector Group | No Load Loss (KW) | Load Loss (KW) | No Load Current (%) | Impedance (%) |
HV (KV) | LV (KV) |
31500 | 220±2x2.5% 242±2x2.5% | 6.3 6.6 10.5 | YNd11 | 15 | 115 | 0.47 | 12-14 |
40000 | 18 | 134 | 0.48 |
50000 | 21 | 161 | 0.44 |
63000 | 25 | 188 | 0.43 |
75000 | 10.5 13.8 | 29 | 213 | 0.41 |
90000 | 34 | 246 | 0.37 |
120000 | 41 | 304 | 0.37 |
150000 | 10.5 13.8 15.75 18 20 | 49 | 360 | 0.34 |
160000 | 51 | 378 | 0.33 |
180000 | 56 | 413 | 0.31 |
240000 | 70 | 484 | 0.28 |
300000 | 15.75 18 20 | 83 | 577 | 0.25 |
360000 | 95 | 662 | 0.25 |
370000 | 97 | 675 | 0.26 |
400000 | 103 | 716 | 0.24 |
420000 | 106 | 742 | 0.24 |