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Types of Transformers: Dry Type vs. Liquid Immersed
Transformers are essential components in electrical systems, and they come in two primary types: dry type and liquid immersed transformers. Dry type transformers utilize air as a cooling medium and are known for their high safety standards and low maintenance requirements. They are ideal for indoor installations, where space is limited and environmental concerns are paramount.
| 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 |
On the other hand, liquid immersed transformers use oil as a coolant, which allows for better heat dissipation and higher efficiency in outdoor settings. These transformers are typically more robust and can handle larger loads, making them suitable for medium voltage applications. However, they do require more maintenance due to potential leakage issues and environmental regulations regarding the use of oil.
Medium Voltage Transformers in China
China has emerged as a significant player in the manufacturing of medium voltage transformers. The country’s advanced technology and competitive pricing have made it an attractive option for businesses looking to purchase transformers at a discount. Many Chinese companies specialize in producing high-quality transformers that meet international standards, providing reliable solutions for various industries.
The growth of the renewable energy sector in China has also spurred demand for medium voltage transformers. These transformers play a critical role in connecting renewable energy sources, such as wind and solar, to the grid. As a result, Chinese manufacturers are continuously innovating to improve efficiency and reduce costs, ensuring that their products remain competitive in the global market.
Exploring Educational Resources: Videos on Transformer Technologies
In today’s digital age, videos have become a valuable resource for learning about transformer technologies. Numerous platforms offer educational content that explains the differences between dry type and liquid immersed transformers, as well as their applications in various industries. These videos provide visual demonstrations, making complex concepts easier to understand.
For those interested in purchasing medium voltage transformers from Chinese companies, there are also informative videos that highlight the benefits of these products. Many manufacturers create promotional content that showcases their products’ features, production processes, and successful case studies. This not only helps potential buyers make informed decisions but also builds trust in the brand.
