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We carry out winding construction internally based on our engineering team design; in Specialtrasfo we have one dedicated workshop for all kinds of windings: foil, helical, layers, disc. Paper-insulated flat conductors are typically used for HV windings. Continuously Transposed Conductors (CTC) are generally used for MV and LV windings with currents higher than 300 A and up to 2000 A for each conductor.


CTC can be either paper-insulated for MV applications or without paper for LV high-current applications. Core and coils are assembled in a dedicated workshop. Factory testing is performed on all transformers in accordance to IEC or IEEE/ANSI standards. We use only high-quality materials and components. All of them (copper, electric steel, coolers, accessories) are procured from well-known long-standing reputable international suppliers.