Lemi Trafo JSC was established in 1996 in the town of Pernik, with main activity – trade with electrical materials, building of electrical equipments and repair of oil-immersed transformers and electric motors. Gradually, the company specialized in maintenance and repair of oil-immersed transformers and electric motors. At the end of 2001 after the purchase of workshop for electrical repair from metallurgical company STOMANA Industry S.A., the company continued to expand its upstream activities and after a while started its own production of oil distribution transformers. The new shop with total area of ​​5,450m² gave us excellent opportunity for development and was renovated and equipped with modern machines and equipment, allowing us to extend the range and quality of our products.

     In 2004 was created Independent Control Unit - "Trafo Control" in Lemi Trafo which was accredited by the Bulgarian Accreditation Service (BAS) as Inspection Body of Type "C". This unit performs routine tests on the produced transformers. The Integrated Management System ISO 9001:2008, ISO 14001:2004, OHSAS 18001:2007, implemented in the company from the "Bureau Veritas Certification" at the end of 2004, fully guarantees the quality of our products. Our standard production consists of several series of transformers - with different level of losses, nominal power from 25kVA up to 25,000 kVA, primary voltage from 6kV up to 36kV.  In order to meet the needs of our customers, we also offer individual transformer projects according to technical documentation provided.

     In 2008 as a result of excellent cooperation between Lemi Trafo and TMC Transformers, Italy, and due to the increased interest and demand for dry type cast resin distribution transformers, we decided to start their assembly, with the aim to perform full production at a later stage. For this purpose it was purchased and renovated a factory nearby the existing one, with an area of 2,800m². Unfortunately several years later TMC Transformers was seriously affected by the international financial crisis and took the decision to sell their shares in Bulgaria to Lemi Trafo JSC. At present the factory is equipped with machinery and equipment for the complete production of dry type cast resin distribution transformers. Also we have a modern testing room for routine tests of cast resin transformers.

     In February 2009 was successfully installed and commissioned a production line for cutting electrical steel for transformers of the reputable company HEINRICH GEORG GmbH MASCHINENFABRIK - Germany. A month later another machine for longitudinal splitting of electrical steel was delivered from Italy and put into operation. We have also installed machines for HV and LV coils winding of the company TUBOLY - ASTRONIC AG, chamber for vacuum filling with transformer oil and oven for drying of active parts of the company IDROCALOR. The commissioning of these machines has significantly improved the quality of our products and our overall capacity.

      Nowadays Lemi Trafo is a well known company not only in Bulgaria but also at the International market. With our stable development and excellent staff, we strive to strengthen our positions and increase our customers from Bulgaria and countries located in Europe, Africa and the Middle East.