In a resistance welding system, the transformer determines how electrical power is delivered to the welding circuit, converting the available input voltage into the low-voltage, high-current output required by the process. TECNA manufactures welding transformers in Italy for industrial applications where high current capacity, controlled performance and reliable operation are essential.
The TECNA range covers different electrical configurations to match the requirements of the welding equipment and production system. It includes single-phase AC transformers up to 400 kVA, three-phase DC transformers up to 1,500 kVA and inverter DC transformers up to 1,050 kVA. This range allows the transformer to be selected according to the welding technology, power demand and characteristics of the installation.
For demanding production environments, transformer construction is an important part of overall system reliability. TECNA transformers feature liquid cooling and epoxy resin encapsulation, protecting the windings and internal components while supporting stable operation during intensive welding cycles.
Several models can also be supplied with multiple secondary winding taps. This allows the welding current to be adjusted to suit different materials and sheet thicknesses, providing greater control when the same welding system has to handle more than one application or component configuration.
Alongside its standard welding transformers, TECNA develops special transformers for heating and upsetting applications. These versions are designed for processes that require a transformer configuration tailored to the specific characteristics of the application rather than a standard resistance welding setup.
TECNA welding transformers are manufactured in accordance with relevant international standards, including ISO 5826, ISO 10656 and ISO 22829. With a broad choice of power ratings, electrical configurations and application-specific designs, the range provides a suitable starting point for resistance welding machines, automated production systems and high-current industrial processes.
