Why Has the Dry Type Transformer Become the Ideal Choice for Modern Urban Power Distribution Systems?

A dry type transformer is a power transformer that does not use liquid insulating media, relying instead on air convection for cooling. It offers advantages such as safety, environmental friendliness, and easy maintenance. Widely used in urban power grids, high-rise buildings, airports, hospitals, and subways—places with high fire safety requirements—dry type transformers are increasingly favored due to their excellent performance and eco-friendly design as the power industry modernizes.

What Is Its Structure and Working Principle?

The core structure of a dry type transformer includes an iron core and windings, typically encapsulated in epoxy resin or other insulation materials to prevent moisture and dust intrusion. Its working principle is the same as that of oil-immersed transformers—using electromagnetic induction to convert electrical energy between voltage levels. The key difference lies in its use of air cooling, making it safer and more environmentally friendly.

What Advantages Does It Have Over Oil-Immersed Transformers?

The biggest advantage of dry type transformers is their high safety—they pose no risk of oil leakage or fire, making them suitable for indoor or enclosed environments. They also require little to no maintenance and run reliably without the need for regular oil replacement. In addition, dry type transformers are low-noise and compact, making them ideal for urban distribution and critical infrastructure projects.

Is the Service Life Long?

High-quality dry type transformers have a long service life, typically exceeding 20 years. They feature excellent sealing, and strong resistance to moisture and corrosion, allowing them to operate stably even in harsh environments. With proper installation and routine inspections, they require minimal maintenance, significantly reducing operation and maintenance costs.

Where Are They Best Installed?

Thanks to their oil-free, fire-resistant, and low-noise characteristics, dry type transformers are especially suitable for schools, hospitals, shopping malls, residential areas, high-rise buildings, and transit systems—places with high safety and cleanliness requirements. They are also ideal for factories and mining sites that demand a clean operating environment.

How Can You Purchase a Dry Type Transformer?

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