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Understanding Oil Immersed Transformers
Oil immersed transformers are widely used in electrical power distribution systems due to their excellent cooling properties and high insulation strength. These transformers utilize mineral oil as both a coolant and an insulator, allowing them to operate efficiently even under heavy loads. Their design helps in dissipating heat generated during operation, which is crucial for maintaining the transformer’s performance and longevity.
With a capacity of 250 kVA, these transformers are ideal for various applications, including industrial plants, commercial buildings, and utility infrastructures. The 250 kVA rating indicates that the transformer can handle a load of up to 250 kilovolt-amperes, making them suitable for medium-sized electrical systems. The oil immersion technology offers a robust solution for managing voltage fluctuations and ensuring a stable power supply.
Features of 250 kVA Transformers from China Factory
The manufacturing of 250 kVA transformers in China has gained significant attention due to the country’s advancements in technology and quality control. Factories in China adhere to international standards, and many are ISO 9001 certified, ensuring that their products meet stringent quality requirements. This certification underscores a commitment to quality management systems and continuous improvement, which is critical in the production of reliable transformers.
Additionally, Chinese factories utilize modern production techniques and high-quality materials to enhance the durability and efficiency of their oil immersed transformers. Innovations in design and engineering contribute to better performance characteristics, such as reduced losses and improved thermal management. As a result, customers can expect a product that not only meets but exceeds industry expectations.
| Type | Rated capacity （KVA） | Voltage combination（KV） | No-load losses（W） | Load losses（W） | No-load current (%) | Short-circuit impedance (%) |
| S11-630 | 630 | 33,35/6.3,6.6,10.5,11 | 830 | 7870 | 1.10 | 6.5 |
| S11-800 | 800 | 33,35/6.3,6.6,10.5,11 | 980 | 9410 | 1.00 | 6.5 |
| S11-1000 | 1000 | 33,35/6.3,6.6,10.5,11 | 1150 | 11540 | 1.00 | 6.5 |
| S11-1250 | 1250 | 33,35/6.3,6.6,10.5,11 | 1410 | 13940 | 0.90 | 6.5 |
| S11-1600 | 1600 | 33,35/6.3,6.6,10.5,11 | 1700 | 16670 | 0.80 | 6.5 |
| S11-2000 | 2000 | 33,35/6.3,6.6,10.5,11 | 2180 | 18380 | 0.70 | 6.5 |
| S11-2500 | 2500 | 33,35/6.3,6.6,10.5,11 | 2560 | 19670 | 0.60 | 6.5 |
| S11-3150 | 3150 | 33,35/6.3,6.6,10.5,11 | 3040 | 23090 | 0.56 | 7.0 |
| S11-4000 | 4000 | 33,35/6.3,6.6,10.5,11 | 3620 | 27360 | 0.56 | 7.0 |
| S11-5000 | 5000 | 33,35/6.3,6.6,10.5,11 | 4320 | 31380 | 0.48 | 7.0 |
| S11-6300 | 6300 | 33,35/6.3,6.6,10.5,11 | 5250 | 35060 | 0.48 | 7.5 |
| S11-8000 | 8000 | 33,35/6.3,6.6,10.5,11 | 7200 | 38500 | 0.42 | 7.5 |
| S11-10000 | 10000 | 33,35/6.3,6.6,10.5,11 | 8700 | 45300 | 0.42 | 7.5 |
| S11-12500 | 12500 | 33,35/6.3,6.6,10.5,11 | 10080 | 53900 | 0.40 | 8.0 |
| S11-16000 | 16000 | 33,35/6.3,6.6,10.5,11 | 12160 | 65800 | 0.40 | 8.0 |
| S11-20000 | 20000 | 33,35/6.3,6.6,10.5,11 | 14400 | 79500 | 0.40 | 8.0 |
| S11-25000 | 25000 | 33,35/6.3,6.6,10.5,11 | 17020 | 94100 | 0.32 | 8.0 |
| S11-31500 | 31500 | 33,35/6.3,6.6,10.5,11 | 20220 | 112900 | 0.32 | 8.0 |
Benefits of ISO 9001 Certification
ISO 9001 certification is a significant factor for customers seeking reliable suppliers of electrical equipment, including oil immersed transformers. This certification indicates that a manufacturer has implemented a quality management system that consistently produces products that fulfill customer and regulatory requirements. For buyers, this means they can trust that the transformers will perform reliably over time.
Moreover, ISO 9001 certified manufacturers often invest in research and development to improve their products continually. This focus on innovation leads to enhanced features, such as improved energy efficiency and lower maintenance costs. Companies that prioritize quality typically experience higher customer satisfaction, leading to repeat business and a strong reputation within the industry.
