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Custom-Built Dry-Type Transformers and Inductors

Strada Cantonale,
CH-6995 Molinazzo di Monteggio,

Situated for more than 40 years on its original site in Lugano, Switzerland, Trasfor has developed a worldwide reputation for the design and manufacture of custom-built dry-type transformers and inductors. As an independent company, the spirit of Trasfor is rooted deep in the heart and traditions of Switzerland. An affinity shared by the owners, employees and associates of the company.

The company’s reputation for providing quality and guaranteeing reliability has led to many of the world’s most demanding industries becoming regular users of Trasfor products and transformed the company into the global company we are today.

For many years, Trasfor has been involved in offshore projects supplying either thruster, drilling or distribution transformers. Trasfor designs transformers and reactors for many applications, but recently the offshore segment is one of the most important and active aspects of our business. The reliability, endurance and efficiency of the Trasfor transformers meet the high standards of the major offshore platform and FPSO builders.

We are on board many platforms, including the B series, 280,281,288,295 the SEVAN 650, the WIL-Pioneer, WIL-Innovator and WIL-Promoter, the SORATU and BEARFIELD and the famous TROLL C.

Medium voltage cast resin transformer – AFWF cooling system, IP44 enclosure.
Medium voltage cast resin transformer – AF cooling system, IP23 enclosure.
Distribution transformer – natural air cooling – IP23 enclosure.

Thruster transformers

Trasfor offers thruster transformers with the following specifications: cast resin coils, aluminium conductor windings, 6,600V primary voltage, 690V secondary voltage, 60Hz. Air-forced and water-forced cooling system are used for maximum control of internal temperatures and IP44 enclosure is used for maximum protection and isolation from the room environment. The company’s thruster transformers are compact, corrosion resistant and designed for high performance.

Drilling transformers

Drilling transformers are offered with the following specifications: cast resin coils, aluminium conductor windings, 6,600V primary voltage, 690V secondary voltage, 60Hz. An air-forced cooling system is used for maximum control of internal temperatures and IP23 enclosure is used for the necessary protection and isolation from the room environment.

Axial fans provide sufficient air cooling to increase nominal power while functioning, as well as extra power to be used in heavy stress or emergency conditions. It is possible to use the transformer in natural air cooling with reduced power.

Distribution transformers for offshore applications

Medium voltage transformers with aluminium or copper windings, cast resin technology for higher voltage and dry-type technology for low voltage secondary are available for offshore applications. Features include single or multi-secondary windings, and thermal protection for temperature control. The standard IP23 enclosure is offered with the possibility to use IP44 enclosure for maximum protection.

Trasfor to Attend Rio Oil & Gas Expo and Conference 2010

A leading oil and gas industry event in Latin America, the Rio Oil & Gas Expo and Conference, takes place at the Riocentro Convention Centre in Rio de Janeiro every two years. Since its first edition in 1982, both the exhibition and the conference have contributed to build up Rio de

31 August 2010

Trasfor to Exhibit at ONS 2010 in Stavanger

On 24-27 August 2010 we welcome you to join 42,000 visitors from close to 100 countries and over 1,200 international exhibitors. ONS 2010 will continue the successful journey that started with the first conference and exhibition in 1974. During the 35 years that it has been held in the

9 August 2010

Trasfor to Attend WINDPOWER 2010 in Dallas

Each year AWEA hosts the WINDPOWER Conference & Exhibition, which is the premier wind energy event in North America. In 2009, the event hosted over 23,000 attendees and nearly 1,300 exhibitors. With similar numbers expected in Dallas in 2010, WINDPOWER will showcase exciting opportunities for

14 May 2010

Trasfor to Present New Product Line at Hannover Messe

Once again Trasfor will be present at the leading industrial event in Europe. The company will exhibit at Hannover Messe in hall 12 at booth E50. The event runs from 19 to 23 April 2010 in Hannover, Germany. The company has just launched a new product line branded 3E; these are cast res

8 April 2010


Strada Cantonale
CH-6995 Molinazzo di Monteggio

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