Dry-type transformers, also known as cast resin transformers, are transformers that use air as the cooling medium instead of oil. They have gained popularity in recent years due to their environmental friendliness, safety, and durability. This article will provide an overview of the working principles and applications of dry-type transformers.

Working principles:

Dry-type transformers use electromagnetic induction to transfer electrical energy from one circuit to another. The transformer consists of two coils, a primary and a secondary, wrapped around a common magnetic core. When an alternating current flows through the primary coil, it creates a magnetic field around the core. This magnetic field induces a current in the secondary coil, which is connected to the load. The output voltage of the transformer is determined by the ratio of the number of turns in the primary and secondary coils.

Dry-type transformers do not use oil as a cooling medium, but instead rely on air to dissipate heat generated by the transformer. This is achieved by using a combination of forced-air and natural convection cooling. The transformer windings are encapsulated in epoxy resin, which provides insulation and protection against moisture, dust, and other contaminants. The resin also helps to dissipate heat and reduces the risk of fire.

Applications:

Dry-type transformers are suitable for a wide range of applications, including indoor and outdoor installations. They are commonly used in commercial and industrial settings, such as hospitals, data centers, and factories. Some of the key advantages of dry-type transformers include:

1.Environmental friendliness: Dry-type transformers do not contain oil, which makes them more environmentally friendly than oil-filled transformers. They do not pose a risk of oil spills or leaks, and are easier to dispose of at the end of their life.

2.Safety: Dry-type transformers are safer to use than oil-filled transformers because they do not pose a fire hazard. They are also less likely to release toxic gases in the event of a fault.

3.Durability: Dry-type transformers are more durable than oil-filled transformers because they are less susceptible to moisture, dust, and other contaminants. They also require less maintenance and have a longer lifespan.

4.Space-saving: Dry-type transformers are typically smaller and lighter than oil-filled transformers, which makes them easier to install in confined spaces.

In conclusion, dry-type transformers are an effective and efficient way to transfer electrical energy. They are suitable for a wide range of applications and offer many advantages over traditional oil-filled transformers. As such, they are becoming an increasingly popular choice for businesses and organizations looking for a safe, durable, and environmentally friendly solution for their power needs.

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.

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