Abstract - This study covers an R&D project that focuses on the underground integration of low voltage distribution cabinets (LVDCs) in urban areas. The underground transformer is a new type of compact substation equipment that combines a transformer, high-voltage load switch, fuse, and other components. It is installed in a pit, does not occupy surface space, and can operate submerged in water for a period of time. The primary goal of relocating LVDCs underground is to mitigate issues such as visual pollution, space occupation, and safety risks caused by existing. The Ministry of Mines and Energy of Colombia has published updated requirements for the new RETIE with significant changes to adapt it to national and international standards and new technologies. The equipment shall conform to SANS 60947 Parts 1 -7, and shall be suitable for operation on supply voltages of 230/400 Volt at 50 Hz, AC. Reference must be made to the schematic/line diagrams, as well as ntries and bottom and top exit cable. Denotes whether a product comes prewired for quicker installation. Unique characteristics and functionality that set.
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