A transformer is a device that converts electrical energy from one voltage level to another, facilitating efficient transmission of electricity. There are two main types: dry-type transformers and oil-filled transformers.
Both are crucial for power distribution, each with its own characteristics and specific applications. In this article, we'll explore these two types of transformers and their importance in power supply. Let's dive in!
Dry transformer
A dry transformer is an electrical device that performs the same function as a conventional transformer, but without the presence of insulating liquids.
Instead, it uses solid insulating materials (such as resins or polymers) to insulate the transformer coils and windings.
This way, they provide greater safety, as they eliminate the risk of oil leaks, in addition to requiring less maintenance.
Furthermore, they are more suitable for environments where the presence of liquids could pose a risk of fire or environmental contamination.
Oil transformer
An oil transformer is an electrical device that uses mineral oil as an insulator and coolant inside its core.
Thus, this oil is used to keep the coils insulated and cool the transformer during operation.
Its main advantages are: excellent electrical insulation capacity, high thermal efficiency and heat dissipation capacity.
What are the main differences between dry and oil transformers?
To better understand the main differences between them, we've created a comparison table. Check it out.
| Dry Transformer | Oil Transformer | |
|---|---|---|
| Environmental Restrictions | Lower environmental impact due to the absence of oil. | Potential soil and water contamination due to insulating oil leaks. |
| Security | Lower risk of fire or explosion. | Risk of fire and explosion due to flammable oil. |
| Installation Cost | Generally more economical due to simpler infrastructure requirements. | More expensive due to the need for a special room for oil containment. |
| Installation | It can be installed indoors without the need for a special room. It requires only basic protection. | It can be installed internally or externally, but requires a specific containment room for leaks. |
| Maintenance | Generally requires less maintenance, just periodic cleaning. | Requires frequent oil analysis, filtration, and leak repairs. |
| Price | It varies, but often more expensive due to solid insulation technology. | Generally more affordable due to conventional liquid insulation technology. |
Therefore, dry and oil transformers have significant differences in terms of environmental impact, safety, installation cost, installation requirements, maintenance and price.
While dry-type transformers offer advantages in terms of lower environmental impact, lower fire risk, and lower installation costs, oil-filled transformers are more affordable.
Therefore, the choice between them depends on the specific project needs and environmental and safety considerations.
Dry and oil transformers are at Trifásica Elétrica!
Whether you're looking for dry-type or oil-type transformers, we're here to help. After all, at Trifásica Elétrica, we guarantee the ideal choice, aligned with your needs and projects.
We're committed to providing only the best materials for 15 to 36kV lines. Curious to learn more?
Then, Please visit our official website for detailed information and feel free to contact us at any time. We are here to help you, always!
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