Lemi Trafo JSC

Lemi Trafo JSC is a leading, fast-growing and fully private Bulgarian company, established in 1996. Our main activity is the design and manufacture of modern three phase distribution and special type transformers. Having our production facilities situated on the area of more than 18,000 square meters in Pernik, Bulgaria we achieve an annual production capacity of about 5000 transformers, equivalent to 2890 MVA. As a result of our efforts towards higher quality assurance we have secured our production with new, contemporary and highly efficient equipment using most advanced technologies.


Workflow in the company is controlled by the implemented Integrated Management System (IMS) meeting the requirements of ISO 9001:2015, ISO 14001:2015 and OHSAS 18001:2007. We perform series of tests in our well equipped and accredited testing room to ensure proper operation of our products.

Lemi Trafo manufacture the following basic types of transformers:

- Oil-immersed distribution transformers
     (with rated power from 25 up to 25,000 kVA and voltage class up to 36 kV)

- Cast resin distribution transformers
     (with rated power from 100 up to 5,000 kVA and voltage class up to 36 kV)

We supply transformers not only on the local market but also worldwide in countries located in Europe, Africa and the Middle East. Our primary goal is to satisfy our customers by providing high quality products in accordance with all local and international standards, respecting technical requirements specified by customer. We would be glad to answer all your questions and make contact.


Our company is located in the industrial area of Pernik on the territory of STOMANA Industry S.A. near the European route E79, 30km southwest from Bulgarian capital Sofia and 40km from Sofia Airport. For more information visit Contacts.