YS ENGINEERING SOLUTION includes comprehensive Transformer Overhauling as part of their service offerings, which is an intensive process aimed at restoring a unit to a near-original, trouble-free operating condition. This major service goes far beyond routine maintenance, involving the complete dismantling and thorough inspection of every component, including the core and windings. Key activities within the overhaul scope typically include untanking the core-coil assembly, removing accumulated sludge with hot oil jets, replacing all degraded Oil-sealing gaskets and insulation, and repairing or replacing worn parts like the Load Tap Changer (OLTC). The process concludes with essential procedures such as vacuum drying and oil impregnation, followed by rigorous testing (e.g., IR, PI, Tan Delta) to validate the insulation system's health and ensure the transformer is ready for reliable, extended service.
