Table of Contents
Understanding Dry Type and Liquid Immersed Transformers
Transformers play a critical role in electrical power systems, and they are primarily categorized into two types: dry type and liquid immersed transformers. Dry type transformers are encased in a solid insulating material and do not utilize any liquid for cooling. This makes them ideal for indoor installations where space is limited and safety is a primary concern. They also exhibit low maintenance costs and are environmentally friendly due to the absence of hazardous oils.
On the other hand, liquid immersed transformers are filled with insulating oil that not only cools the transformer but also provides insulation. These transformers are widely used in industrial applications due to their high capacity and efficiency. They can operate in outdoor environments and are preferred when high power levels are required. The choice between these two types often depends on specific operational needs and environmental considerations.
The Role of Three-Phase Transformers in Industry
Three-phase transformers are essential components in industrial power distribution, allowing for efficient transmission of electricity across long distances. They consist of three sets of windings that enable them to handle three-phase power loads effectively. This configuration enhances performance and reduces losses compared to single-phase systems, making them the preferred option for large-scale applications.
| SC(B)11 | Rated capacity (KVA) | Voltage combination(KV) | No-load losses(W) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| SC11-30 | 30 | 6,6.3,6.6,10,11/0.4 | 180 | 710 | 2.4 | 4.0 |
| SC11-50 | 50 | 6,6.3,6.6,10,11/0.4 | 250 | 1000 | 2.4 | 4.0 |
| SC11-80 | 80 | 6,6.3,6.6,10,11/0.4 | 340 | 1380 | 1.8 | 4.0 |
| SC11-100 | 100 | 6,6.3,6.6,10,11/0.4 | 360 | 1570 | 1.8 | 4.0 |
| SC11-125 | 125 | 6,6.3,6.6,10,11/0.4 | 420 | 1850 | 1.6 | 4.0 |
| SCB11-160 | 160 | 6,6.3,6.6,10,11/0.4 | 490 | 2130 | 1.6 | 4.0 |
| SCB11-200 | 200 | 6,6.3,6.6,10,11/0.4 | 560 | 2530 | 1.4 | 4.0 |
| SCB11-250 | 250 | 6,6.3,6.6,10,11/0.4 | 650 | 2760 | 1.4 | 4.0 |
| SCB11-315 | 315 | 6,6.3,6.6,10,11/0.4 | 790 | 3470 | 1.2 | 4.0 |
| SCB11-400 | 400 | 6,6.3,6.6,10,11/0.4 | 880 | 3990 | 1.2 | 4.0 |
| SCB11-500 | 500 | 6,6.3,6.6,10,11/0.4 | 1050 | 4880 | 1.2 | 4.0 |
| SCB11-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1210 | 5880 | 1.0 | 4.0 |
| SCB11-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1170 | 5960 | 1.0 | 6.0 |
| SCB11-800 | 800 | 6,6.3,6.6,10,11/0.4 | 1370 | 6960 | 1.0 | 6.0 |
| SCB11-1000 | 1000 | 6,6.3,6.6,10,11/0.4 | 1590 | 8130 | 1.0 | 6.0 |
| SCB11-1250 | 1250 | 6,6.3,6.6,10,11/0.4 | 1880 | 9690 | 1.0 | 6.0 |
| SCB11-1600 | 1600 | 6,6.3,6.6,10,11/0.4 | 2210 | 11730 | 1.0 | 6.0 |
| SCB11-2000 | 2000 | 6,6.3,6.6,10,11/0.4 | 2720 | 14450 | 0.8 | 6.0 |
| SCB11-2500 | 2500 | 6,6.3,6.6,10,11/0.4 | 3200 | 17170 | 0.8 | 6.0 |
In China, many enterprises specialize in manufacturing high-performance three-phase transformers that meet international standards. These companies focus on innovation, leveraging advanced technology and materials to produce transformers that offer improved efficiency and reliability. As a result, they contribute significantly to the modernization of the country’s electrical infrastructure, ensuring consistent power supply for various industries.
Cost Considerations and Specialist Services
When evaluating the cost of transformers, it is important to consider both initial investment and long-term operating expenses. While dry type transformers may have a higher upfront cost, their lower maintenance needs can make them more economical over time. Conversely, liquid immersed transformers, while generally cheaper initially, may incur additional costs related to oil maintenance and environmental regulations.
Specialist services are crucial for ensuring the optimal performance of transformers throughout their lifecycle. Many companies provide comprehensive support, including installation, maintenance, and repair services. These professionals are well-versed in the latest technologies and best practices, helping enterprises avoid costly downtimes. For those interested in learning more, there are numerous videos available online that showcase the operation, benefits, and maintenance of different transformer types.


