Underground Complete Transformer Substations (UCTS) - Nika Energy

Underground Complete Transformer Substations (UCTS)

Underground Complete Transformer Substations (UCTS) are modern, sealed concrete or metal structures installed underground for transforming and distributing electrical energy from 6/10/35 kV to 0.4 kV. They are an ideal solution for cities and regions, as well as critical infrastructure facilities, thanks to their concealed installation, low noise levels, protection against weather conditions and other external factors, and enhanced security against unauthorized access.

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Key Advantages of Underground Transformer Substations:

  • Design: Consist of a power transformer, high-voltage (HV) and low-voltage (LV) switchgear, all housed in a robust, sealed concrete enclosure. Available in configurations with one, two, or four transformers.
  • Aesthetics and Space: The substation does not disrupt the architectural appearance of the surrounding area, as only ventilation kiosks or access hatches remain visible above ground.
  • Safety and Reliability: Waterproof cable entries and flood resistance, along with complete protection against external environmental influences.
  • Functionality: Used in ring or radial network configurations, ensuring a high level of power supply reliability.
  • Maintenance: Provide convenient access for servicing HV and LV switchgear and power transformers within the structure.

UCTSs address the problem of limited space in densely built-up urban areas and have also proven effective at critical infrastructure facilities across Ukraine.