Medium & High Voltage

Sotécnica develops projects in medium, high and very high voltage, acting on project design, installation of infrastructures and supply and maintenance of equipments. Our vast experience in energy transformation, especially in the field of high voltage direct current converting substations, allows us to cover the entire electric power supply chain, from production to distribution.

Our team has as valences the design, construction and placement of equipment in substations. We perform project work, supply installation and maintenance for underground networks of voltage up to 60kV and construction projects, remodeling and maintenance of HV and VHV of substations and transport networks up to 400 kV.







Test and Diagnosis




Electrical Cable Testing Van (MV)

  • DC withstand voltage test
  • Capacity Measurement (C) and Tan Delta
  • Measurement of Partial Discharges (DPs) at a frequency of 0.1 Hz
  • Reporting according to EDP