Oil-immersed transformer

S11/13 Oil-Immersed Distribution Transformer

Compared with conventional oil-immersed transformers, the S11/S13 oil-immersed distribution transformers eliminate the oil conservator and instead use corrugated tank fins as cooling and heat-dissipation components in place of oil pipes. The corrugated tank is manufactured from high-quality cold-rolled thin steel sheets on a specialized production line. The corrugated fins expand and contract in response to changes in the volume of transformer oil, thereby isolating the transformer from the atmosphere and effectively preventing and slowing down oil degradation and insulation moisture absorption, thus enhancing operational reliability and ensuring maintenance-free operation under normal conditions. After undergoing degreasing, derusting, and phosphating treatments, the surface of the corrugated tank is coated with a three-proof (rainproof, moisture-proof, and smoke-proof) paint, making it suitable for use in harsh industrial environments such as metallurgy and petrochemical plants.
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