Solving the problem of exploitation of transformers with corrosive sulfur by oil desulfurization using a strong inorganic base and organic solvent

Most power transformer failures are associated with the presence of corrosive sulfur compounds in mineral insulating oil, which dibenzyl disulfide (DBDS) is best known and most widespread compound. The oil failed transformers usually contained DBDS, a compound pronounced affinity for formation copper (I) sulfide (Cu2S). Copper that does not dissolve conducts electricity, can be deposited on paper insulation or conductor transformer. Created conductive paths between windings initiate turn-to-turn breakdown failure Several technological procedures have been developed as solution to corrosivity. application desulfurization technology by Electrical Engineering Institute "Nikola Tesla" enables efficient removal DBDS aging products from oils.