Transformers are an essential component of the power system, and they play a vital role in stepping up or stepping down the voltage level of electric power. There are two types of transformers: dry-type transformers and oil-immersed transformers. Both of them have their unique advantages and disadvantages. In this article, we will compare the two types of transformers and highlight their differences.

Dry-Type Transformer A dry-type transformer is a transformer that does not use oil as a cooling agent. Instead, it uses air as the cooling medium. The core and windings of a dry-type transformer are encapsulated in epoxy resin, which makes it resistant to moisture, dust, and other environmental contaminants. The absence of oil in a dry-type transformer makes it a more eco-friendly and safe option as it eliminates the risk of oil leakage and fire hazards.

Oil-Immersed Transformer An oil-immersed transformer, as the name suggests, uses oil as a cooling medium. The core and windings of the transformer are immersed in oil, which helps to dissipate heat and maintain the temperature of the transformer. The oil also acts as an insulator and protects the transformer from environmental factors like moisture and dust.

Comparison

Safety: Dry-type transformers are considered safer as they do not use oil as a cooling agent. In case of a fault or leakage, there is no risk of fire or explosion. On the other hand, oil-immersed transformers have a higher risk of fire hazards.

Environmental Impact: Dry-type transformers are more eco-friendly than oil-immersed transformers as they do not contain any hazardous substances like oil. Dry-type transformers do not require any special disposal techniques, making them a more sustainable option.

Maintenance: Dry-type transformers require less maintenance than oil-immersed transformers. Dry-type transformers do not need oil testing or replacement, which is a time-consuming and costly process. Additionally, the absence of oil makes it easier to clean and inspect the transformer.

Cost: Dry-type transformers are generally more expensive than oil-immersed transformers. However, the cost difference may be offset by the lower maintenance requirements of dry-type transformers.

Performance: Both types of transformers have similar performance characteristics. However, oil-immersed transformers are better suited for high voltage and high power applications due to their superior cooling properties.

Conclusion The choice between dry-type and oil-immersed transformers depends on several factors such as safety, environmental impact, maintenance, cost, and performance requirements. While dry-type transformers are safer and more eco-friendly, oil-immersed transformers are better suited for high power and high voltage applications. It is essential to consider all factors before choosing a transformer that best fits your requirements.

LuShan, est. 1975,  is a Chinese professional manufacturer specializing in power transformers and reactors for 48 years. Leading products are single-phase transformer, three-phase transformers, DC inductors, AC reactors, filtering reactor, expoxy resin high-voltage transformer and intermediate, high-frequency products. Our transformers and reactors are widely used in 10 application areas: rapid transit, construction machinery, renewable energy, intelligent manufacturing, medical equipment, coal mine explosion prevention , excitation system, vacuum sintering, central air conditioning.

Know more about power transformer :https://www.lstransformer.com/Transformers