National Industri and Richard Pfeifer

The Very Beginning

Richard Pfeifer (RP) was founded as a company in Sarpsborg, southeastern Norway, in February 1920. From the very beginning, the company produced power transformers and industrial transformers for the Norwegian market. In doing so, it laid the foundation for a transformer tradition in Sarpsborg that would continue for generations.

A major turning point came in 1970, when National Industri (NI) acquired Richard Pfeifer. At the time, NI also had links to transformer operations in Drammen that had previously been associated with Westinghouse Electric International Co. This marked the beginning of a new phase. NI shifted production from power transformers to special industrial transformers of shell-type design and, in parallel, expanded into international markets. The company soon exported furnace and rectifier transformers worldwide and, by the end of 1988, had become the world leader in furnace transformer production.

That same year, ABB incorporated National Industri into ABB National Transformer. Then, in 1994, ABB decided to close the Sarpsborg plant and move operations to Drammen. Although many employees relocated, others chose to remain in Sarpsborg.

Instead of ending the story there, former National Industri and ABB employees chose to continue it. Their experience, commitment, and local roots led to the founding of Norsk Trafo Service (NTS) in 1996. In this way, transformer production continued in Sarpsborg, built on decades of knowledge and tradition.

NI - National Industri logo

Recent History

Since 1999, NTS has delivered furnace transformers and shell-type industrial special transformers to customers worldwide. Over the years, we have developed strong expertise in both furnace transformer solutions and power transformers. Consequently, we have built a broad and trusted customer base that includes Elkem, Eramet, Owens Corning, Rockwool, Wacker Ch., Elvia, Å energi, among many others.

Even so, our work is not only about new deliveries. We also continue a long industrial tradition in Sarpsborg. In our factory, we still repair furnace and rectifier transformers originally delivered by National Industri. Furthermore, we support former customers with new transformers, repair services and spare parts for complete units.

Our supply scope includes:

  • Bushings
  • Protective devices
  • NI tap-changer parts
  • NI diverter switch parts
  • MR tap-changer parts
  • ASEA tap-changer parts
  • Coils
  • Cores
  • Cooling systems
  • and more

If you are interested in learning more about what we can offer in terms of transformer service or new transformers? Click on one of the links to learn more about what products and services we can offer.

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