1. Design work with individual construction solutions for autotransformer protection, coordination with an expert organization.
2. Construction and installation work:
dismantling of existing equipment and busbars;
construction of a protective structure for an autotransformer made of monolithic reinforced concrete;
installation of an oil receiver designed to receive the full volume of transformer oil;
installation of oil drains to drain oil from the oil receiver into the existing oil sump;
installation of new supports for equipment on the 330 kV open switchgear;
installation of cell-type portals;
installation of a pre-detonation screen made of metal structures along the perimeter and above the protective structure of the autotransformer to prevent direct damage to the protective structure;
installation of temporary protection structures for gaps;
installation of a working and emergency lighting system for the physical protection structure;
grounding and lightning protection of the equipment being designed;
installation of an autotransformer type ATDTN-200000/330/110-U1;
installation of a 3-phase 220 kV surge arrester set with operation counters;
installation of a 3-phase 110 kV surge arrester set;
installation of busbars for 10-220 kV equipment to be installed;
installation of a complete 10 kV outdoor switchgear;
installation of a 0.5 m wide branch of cable trays;
organization of cable connections between different links of the technological process of electricity distribution.