Audited Supplier
CEEG has over 30 years of experience in the power transmission and distribution sector and is now an intelligent transmission and distribution solutions provider. We hold 52 patents in oil-filled transformers, and our oil-immersed transformers have maintained strong sales for three decades. We operate an in-house high-voltage test station, which is essential for our 220kV and 230kV transformers.
In 2023, our CNAS (China National Accreditation Service for Conformity Assessment) testing center was officially unveiled. This indicates that we can carry out testing services according to international accreditation standards (ISO/IEC17025). The testing data and reports issued by the testing center within the scope of accreditation can use the China National Laboratory Accreditation Service (CNAS) and the International Laboratory Accreditation Cooperation (ILAC) logos, which are recognized by more than 100 countries and regions including the United States, the United Kingdom, Germany, France, the Netherlands, Japan, etc. that have signed mutual recognition agreements.
Product Features of 110kv Oil Transformer
1. Low Loss: No-load loss is reduced by 20% compared to national standards, and load loss is reduced by 5%.
2. Low Noise: Natural cooling noise levels are below 60dB, 3 to 5dB lower than national standards.
3. Low Partial Discharge: Dust-free operations keep partial discharge levels below 100pC.
4. Short Circuit Resistance: Passed sudden short circuit tests at the National Transformer Testing Center.
5. Leakage-Free: All sealing components are made from acrylic in one piece and undergo fluorescence, positive pressure, and negative pressure leak tests.
110kv
SFSZ11 - XXX /XX
| S/N | Symbol | Meaning |
| 1 | S | Three phases |
| 2 | F | Air-cooling |
| 3 | S | Three windings |
| 4 | Z | On load tap changing |
| 5 | 11 | Symbol of Performance level (11,13) |
| 6 | xxx | Rated capacity,kVA |
| 7 | xx | Voltage grade of HV winding,kV |
S(F)11/13-110kV 6300-90000kVA Dual Winding Power Transformer
Capacity kVa | Voltage Ratio & Tapping Range | Vector Group | No Load Loss | Load Loss | No Load Current | Impedance | |||
| HV | Tapping Range | LV | 11 | 13 | |||||
| 6300 | 110 115 121 | ±2X2.5% | 6.3 6.6 10.5 | YNd11 | 7.4 | 5.92 | 35 | 0.62 | 10.5 |
| 8000 | 8.9 | 7.12 | 42 | 0.62 | |||||
| 10000 | 10.5 | 8.4 | 50 | 0.58 | |||||
| 12500 | 12.4 | 9.92 | 59 | 0.58 | |||||
| 16000 | 15.0 | 12.0 | 73 | 0.54 | |||||
| 20000 | 17.6 | 14.08 | 88 | 0.54 | |||||
| 25000 | 20.8 | 16.64 | 104 | 0.5 | |||||
| 31500 | 24.6 | 19.68 | 123 | 0.48 | |||||
| 40000 | 29.4 | 23.52 | 148 | 0.45 | |||||
| 50000 | 35.2 | 28.16 | 175 | 0.42 | |||||
| 63000 | 41.6 | 33.28 | 208 | 0.38 | |||||
| 90000 | 54.4 | 43.52 | 272 | 0.8 | 12-14 | ||||
SS(F)11/13-110kV 6300-63000kVA Three Winding Power Transformer
Capacity kVa | Voltage Ratio & Tapping Range | Vector Group | No Load Loss | Load Loss | No Load Current | Impedance | ||||
| HV | MV | LV | 11 | 13 | Stepup | Setdown | ||||
| 6300 | 110±2X2.5% 115±2X2.5% 121±2X2.5% | 36 37 38.5 | 6.3 6.6 10.5 21 | YNyn0 d11 | 8.9 | 7.12 | 44 | 0.66 | HV-MV 17.5-18.5 HV-LV 10.5 MV-LV 6.5 | HV-MV 10.5-18.5 HV-LV 18-19 MV-LV 6.5 |
| 8000 | 10.6 | 8.48 | 53 | 0.62 | ||||||
| 10000 | 12.6 | 10.08 | 62 | 0.59 | ||||||
| 12500 | 14.7 | 11.76 | 74 | 0.56 | ||||||
| 16000 | 17.9 | 14.32 | 90 | 0.53 | ||||||
| 20000 | 21.1 | 16.88 | 106 | 0.52 | ||||||
| 25000 | 24.6 | 19.68 | 126 | 0.48 | ||||||
| 31500 | 29.4 | 23.52 | 149 | 0.48 | ||||||
| 40000 | 34.8 | 27.84 | 179 | 0.44 | ||||||
| 50000 | 41.6 | 33.28 | 213 | 0.41 | ||||||
| 63000 | 49.2 | 39.26 | 256 | 0.40 | ||||||
Product Features of 220kv Oil Transformer
1. No Partial Discharge: Actual measured partial discharge is less than 50pC, lower than the background noise.
2. High Efficiency and Low Loss: Innovative core and coil design, along with leakage magnetic flux control technology, effectively reduces additional and stray losses.
3. Low Noise: Actual measured noise is below 60dB, significantly better than the national standard noise levels.
4. Intelligent Design: Meets the operational requirements of intelligent substations.
5. Maintenance-Free Design: Comprehensive design includes air self-cooling methods, fiberglass dry-type bushings, and metal corrugated internal oil-type conservators, free of routine on-site maintenance, making it suitable for unattended substations.
6. Compact Structure Design: Adopt the industrial advanced 220kV end inlet method, resulting in a compact overall structure, facilitating easier transportation and on-site installation.
7. Strong Short Circuit Resistance: Utilizes foreign short-circuit mechanical force verification procedures and ensures all assembly stages of the transformer body meet design requirements.
8. Over 40-Year Design Life: Unique high-temperature-resistant hybrid insulation system based on temperature field simulation analysis, ensuring all transformer components have the same design life as the transformer itself.
9. Passes All Routine and Type Tests at Once: The transformer's overall performance reaches advanced domestic levels.
220kv
