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Secondary Voltage Ratings: 11/10.5/6.6/6.3kV or others
H.V. TAP RANGE: ±8×1.25% or others
CONNECTION TYPE: YNd11 or others
TYPE: oil immersed transformer or substation transformer
110 kV 115 kV power transformers according to standard 1. GB 6451 Specification and technical requirements for oil-immersed power transformers;2. IEC 60076 Power Transformers;3. AS NZS 60076 Power Transformers;4.CSAC88-16 Power Transformers;5. ANSI/IEEE C57.12.00 Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers;6. GOST R 52719 Power Transformers – General Specifications; 7. EN60076 Power Transformer;8. Local After-Sales Services In North America South America and other regions respond to your needs within 24 hours.
| 115 kV Transformer Specifications | |||
| Phase | 3 phase | Std. | ANSI C57 |
| Cooling means | ONAN/ONAF1/ONAF2 | Fluid | Mineral Oil |
| Power ONAN | 12MVA | Frequency | 60Hz |
| Power ONAF1 | 16MVA | HV bushing | Porcelain top-mounted |
| Power ONAF2 | 20MVA | LV bushing | Porcelain top-mounted |
| Type | Oil Immersed with oil conservator | Environmental condition | Outdoor |
| HV Voltage | 115 kV | Paint Color | Grey 70 |
| LV Voltage | 13.8 kV | Winding Material | Copper |
| BIL | 550/110kV | Vector group | Dyn1 |
Contact Daelim Transformer for special requirements
| 115 kV Transformer Dimensions & Weight | |||
| Dimensions | Weight | ||
| Height | 5037 mm | Tank & accessories | 17200 kg |
| Depth | 3800 mm | Total oil weight | 8140 kg |
| Width | 6059 mm | Total weight | 35000 kg |

The SF11-20000/115 is a 115 kV 20 MVA power transformer, offered by Daelim Transformer to meet the specific needs of a power company in Mexico. This transformer adheres to the stringent production standards of ANSI C57 Std. It features a high voltage capacity of 115 kV and a low voltage rating of 13.8 kV.
Daelim Transformer brings a wealth of experience and a proven track record in high-voltage transformer projects within the American market. Their technical and sales teams demonstrate a deep understanding of local regulations and compliance with ANSI, IEEE, and CSA standards. Daelim Transformer’s HV transformers have found successful applications in various installations across the United States, Canada, Mexico, Australia, Ecuador, and other nations.

The 115 kV 20 MVA transformer undergoes a comprehensive series of tests to ensure it meets the rigorous standards set by ANSI C57. These tests include:
This battery of tests ensures that the 115 kV transformer complies with ANSI C57 standards and is fully qualified, guaranteeing its reliability and performance.



115kV/110kV power transformers are designed and optimized by absorbing and utilizing advanced technologies domestically and abroad to optimize the transformer core, coil, body, leads, fuel tank, and other components, which feature low partial discharge, low loss, low noise, lightweight, and high reliability. Its excellent performance has won high praise from users and relevant experts. This product has the characteristics of stability, economy, and environmental protection, and is suitable for power plants, substations, large industrial and mineralization enterprises, etc.
Daelim has more than 20 years of experience in overseas transformer projects. The markets are North America, South America, Australia, Europe, Asia, etc. Power Transformer has UL/CUL, CSA, CE, IEEE, SGS, CESI, etc., a series of certification and test reports.

| 110kV Three-phase double-winding power transformer on load changer | ||||||
| Rating (kVA) | Voltage Combined | No Load Loss | Load Loss | No Load current | Short-circuit impendance | |
| HV | LV | |||||
| 6300 kVA | 110kV ±8 ×1.25%115kV ±8 ×1.25% | 6.3kv 6.6kv 10.5kv 11kv | 10 | 36 | 0.8 | 10.5 |
| 8000 kVA | 12 | 45 | 0.8 | |||
| 10000 kVA | 14.2 | 53 | 0.74 | |||
| 12500 kVA | 16.8 | 63 | 0.74 | |||
| 16000 kVA | 20.2 | 77 | 0.69 | |||
| 20000 kVA | 24 | 93 | 0.69 | |||
| 25000 kVA | 28.4 | 110 | 0.64 | |||
| 31500 kVA | 33.8 | 133 | 0.64 | |||
| 40000 kVA | 40.4 | 156 | 0.58 | |||
| 50000 kVA | 47.8 | 194 | 0.58 | |||
| 63000 kVA | 56.8 | 234 | 0.52 | |||
| 110kV Three phase three winding power transformer on load changer | ||||||
| Rating (kVA) | Voltage Combined | No Load Loss | Load Loss | No Load current | ||
| HV(kV) | MV(kV) | LV(kV) | ||||
| 6300 kVA | 110kV±8 ×1.25%115kv±8 ×1.25% | 35kv 37kv 38.5kv | 6.3kv 6.6kv 10.5kv 11kv | 12 | 47 | 0.95 |
| 8000 kVA | 14.4 | 56 | 0.95 | |||
| 10 MVA | 17.1 | 66 | 0.89 | |||
| 12.5 MVA | 20.2 | 78 | 0.89 | |||
| 16MVA | 24.2 | 95 | 0.84 | |||
| 20MVA | 28.6 | 112 | 0.84 | |||
| 25MVA | 33.8 | 133 | 0.78 | |||
| 31.5MVA | 40.2 | 157 | 0.78 | |||
| 40MVA | 48.2 | 189 | 0.73 | |||
| 50MVA | 56.9 | 225 | 0.73 | |||
| 63MVA | 67.7 | 270 | 0.67 | |||

Daelim transformers have a complete supply chain at home and abroad. If you have the brand and technical requirements for the 110kV and 115 kV transformers accessories, we will be satisfied and assured of the fastest speed and optimal competitive price.
After the transformer is produced, Daelim will conduct factory tests on the transformer, such as resistance, variable ratio, impulse strength, audible sound, etc. If you have special test requirements such as Short Circuit, Temperature Rise, etc. can also be met.
For the shipping of 110kV or 115kV transformers, Daelim uses one 20-frame container and one 40 HQ container. The radiator, oil conservator, and other accessories are packed in wooden cases. The transformer body is well fixed with steel wire rope and sleeper, and equipped with an impact recorder.

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