Table of Contents
Types of Transformers: Dry Type and Oil Immersed
Dry type transformers are widely recognized for their safety and environmental benefits. Unlike oil-immersed transformers, which use insulating oil as a coolant, dry type transformers utilize air or resin for cooling. This makes them less flammable and suitable for indoor applications where space is limited. In addition, they often require less maintenance compared to their oil-immersed counterparts, making them a popular choice in urban settings and commercial buildings.
| Type | Rated capacity (KVA) | Voltage combination(KV) | No-load losses(W) | Load losses(W) | No-load current (%) | Short-circuit impedance (%) |
| SC12-30 | 30 | 6,6.3,6.6,10,11/0.4 | 150 | 710 | 2.0 | 4.0 |
| SC12-50 | 50 | 6,6.3,6.6,10,11/0.4 | 215 | 1000 | 2.0 | 4.0 |
| SC12-80 | 80 | 6,6.3,6.6,10,11/0.4 | 295 | 1380 | 1.5 | 4.0 |
| SC12-100 | 100 | 6,6.3,6.6,10,11/0.4 | 320 | 1570 | 1.5 | 4.0 |
| SC12-125 | 125 | 6,6.3,6.6,10,11/0.4 | 375 | 1850 | 1.3 | 4.0 |
| SCB12-160 | 160 | 6,6.3,6.6,10,11/0.4 | 430 | 2130 | 1.3 | 4.0 |
| SCB12-200 | 200 | 6,6.3,6.6,10,11/0.4 | 495 | 2530 | 1.1 | 4.0 |
| SCB12-250 | 250 | 6,6.3,6.6,10,11/0.4 | 575 | 2760 | 1.1 | 4.0 |
| SCB12-315 | 315 | 6,6.3,6.6,10,11/0.4 | 705 | 3470 | 1.0 | 4.0 |
| SCB12-400 | 400 | 6,6.3,6.6,10,11/0.4 | 785 | 3990 | 1.0 | 4.0 |
| SCB12-500 | 500 | 6,6.3,6.6,10,11/0.4 | 930 | 4880 | 1.0 | 4.0 |
| SCB12-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1070 | 5880 | 0.85 | 4.0 |
| SCB12-630 | 630 | 6,6.3,6.6,10,11/0.4 | 1040 | 5960 | 0.85 | 6.0 |
| SCB12-800 | 800 | 6,6.3,6.6,10,11/0.4 | 1210 | 6960 | 0.85 | 6.0 |
| SCB12-1000 | 1000 | 6,6.3,6.6,10,11/0.4 | 1410 | 8130 | 0.85 | 6.0 |
| SCB12-1250 | 1250 | 6,6.3,6.6,10,11/0.4 | 1670 | 9690 | 0.85 | 6.0 |
| SCB12-1600 | 1600 | 6,6.3,6.6,10,11/0.4 | 1960 | 11700 | 0.85 | 6.0 |
| SCB12-2000 | 2000 | 6,6.3,6.6,10,11/0.4 | 2440 | 14400 | 0.7 | 6.0 |
| SCB12-2500 | 2500 | 6,6.3,6.6,10,11/0.4 | 2880 | 17100 | 0.7 | 6.0 |
Oil immersed transformers, on the other hand, are preferred for high-capacity applications. They can handle larger loads and are typically used in industrial environments or utility installations. The oil not only serves as an insulator but also helps to dissipate heat more effectively. However, they require careful monitoring for leaks and environmental compliance, which can add to operational costs over time.
Pole Mounted Transformers: Efficiency and Space Saving
Pole mounted transformers are essential components of electrical distribution systems, particularly in rural and suburban areas. These transformers are installed on utility poles, saving ground space and improving accessibility for maintenance. Their design allows them to efficiently convert high-voltage electricity from transmission lines to lower voltages suitable for residential and commercial use.

The compact nature of pole mounted transformers also enables quicker installation and reduced infrastructure costs. With advancements in technology, many manufacturers in China have begun producing high-performance pole mounted transformers that offer increased durability and efficiency. These products often come with features like advanced monitoring systems that ensure reliability and reduce downtime.
Choosing a Reliable Supplier in China
When sourcing transformers from a factory in China, it’s crucial to select a reputable supplier. A reliable supplier should offer products that meet international standards and provide excellent customer support. Conducting thorough research and requesting samples can help ensure that you are getting high-quality equipment that suits your specific needs.
Cost is another significant factor when choosing a supplier. While cheaper options may be tempting, they often come with trade-offs in quality and performance. Investing in high-performance transformers can lead to long-term savings through reduced maintenance costs and improved energy efficiency. Many Chinese manufacturers now offer competitive pricing without sacrificing quality, making them an attractive choice for businesses worldwide.
For those interested in visual learning, many suppliers also provide instructional videos on their websites. These videos can demonstrate the installation process, maintenance tips, and the unique features of their products. Engaging with this content can help buyers make informed decisions and understand what to expect from their investment.
