Coil winding made by TRAMAG

– What you can rely on

Insights into the transformer and choke production of a leading specialist

Winding a coil so safely and precisely that it meets our customers’ requirements for an individual and specially developed transformer requires years of craftsmanship and skill, as well as precise knowledge of what is important for electrotechnically safe quality and functionality.

Precisely controlled manufacturing process

Numerically precisely controlled winding machines support the manual production process. The expertly crafted implementation of project-specific, individual requirements for transformer or choke winding enables precise adaptation to the electrical system of the customer’s application.

Permanent quality control

The winding operation, which is characterised by craftsmanship throughout, enables immediate fault detection: each individual work step by the employee who has been specially trained for the machine also means permanent quality control of the material used, thus preventing problems later on during electrical operation.

Years of craftsmanship experience

Separate transformer winding

The transformer winding is divided into two or more separate windings: A primary winding oriented to the input current/voltage values referred to from the line and one or more secondary windings oriented to the output current/voltage values required for machine operation.

Coil winding with different conductors

The winding ratio of the secondary coils to the primary coil determines the desired voltage transformation from the power line to the machine. Depending on the current density, different copper conductors (including strip material, round and flat wires or HF strands) are used for primary and secondary windings and processed in the coil winding.

TRAMAG also processes economically more favourable aluminium conductors for coil winding if this is technically possible and requested by the customer.

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Always up to date in transformer technology

6. July 2022

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Quality assurance made by TRAMAG

Not only during the production itself, but also from the receipt of the materials to the packaging and shipping of the final products, our employees are trained to carefully monitor every process.

10. June 2022

The testing process – made by TRAMAG

TRAMAG has stood for high-quality winding goods for almost 100 years. That is why all our products are 100% tested before they leave the factory.

8. June 2022

Vacuum impregnation – made by TRAMAG

The impregnation process for transformers, chokes and filters is equivalent to an impregnation process of the winding material. TRAMAG uses synthetic resin of special viscosity as the impregnating agent, which hardens completely.


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