Low-Voltage Transformers

Isolating transformers and autotransformers, voltage step-up or step-down transformers, designed for distribution systems, lighting networks, control panels, motors, machinery, furnaces, and other industrial applications.

Medium Voltage Dry Transformers

Dry-type transformers with coils vacuum-encapsulated in epoxy resin, from the DRY: Plus, Tech, Solar, BT, and Utilities series.

Medium Voltage Liquid-Immersed Transformers

Distribution and power transformers immersed in mineral oil or biodegradable vegetable oil, with ratings up to 3 MVA.

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Transformers Union offers Specialized Services

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Extended Warranty

It consists of extending the initial warranty period, and can be contracted for up to 60 months. It includes maintenance for manufacturing defects, covering labor and necessary parts costs for the repair of your Transformer.

Start-Up

Energization of the transformer at your facility, where we will demonstrate its operation and maintenance.

Commissioning

Integrated application of a set of technical standards and engineering procedures for inspecting and testing transformers. It can be applied to new equipment, existing systems, or modernization and expansion projects.

Laboratory Tests:

The Transformadores União laboratory is equipped with modern, calibrated equipment designed to validate tests on medium- and low-voltage transformers, in accordance with ABNT standards.

Retrofit

Our transformer retrofit service is supported by a highly qualified team and state-of-the-art facilities, enabling us to provide service for equipment from other manufacturers.

Reform

Repairs to medium and low voltage dry-type transformers of different brands. After the repair is completed, the transformer is subjected to tests in accordance with ABNT standards, ensuring maximum quality of service.

Customers

Companies that trust us.

Testimonials

See what our customers are saying

Transformadores União is a company with an engaged technical and commercial team committed to maintaining the quality of manufactured equipment with a primary focus on meeting customer needs.

Hirofumi Takayanagi

Technical Consultant - Intelli Group

At our ArcelorMittal Sul Fluminense facility in Resende, we have several dry-type transformers manufactured by Transformadores União. They have fully met our expectations in terms of product quality and reliability; they are robust pieces of equipment designed for industrial applications.

Joselio Alves Machado

Engineering Specialist - ArcelorMittal Sul Fluminense

I was responsible for operating a dry-type transformer manufactured by União Transformadores at the Sumidouro Hydroelectric Plant. It is a very robust transformer, and once it went into operation, it proved to be highly reliable and low-maintenance compared to the previous oil-filled transformer. I highly recommend it!

Danilo Marques

Technical Department - Cemig

Equipment of exceptional build quality, made with top-quality materials, and an engineering team that consistently meets all the requirements specified in the technical specifications. The performance of União transformers at the Tucuruí and Curua-una hydroelectric power plants has been excellent!

Paulo Monteiro

Maintenance Technician - Eletrobrás

To my true partners, I can only thank you for your cooperation, as well as for the prices and quality of the products. .

Nilton Lima

Director - Nilmariz Generator Group

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