Effects of Core Rusting on Transformers
Increased Core Loss and Reduced Efficiency
Rust on the silicon steel sheets can cause short circuits between the sheets, leading to increased core loss and decreased transformer efficiency.
Overheating and Insulation Degradation
Rusting of the silicon steel sheets can cause the core to overheat, which negatively impacts the insulation performance of the transformer and shortens its lifespan.
Reduced Magnetic Conductivity
Rust reduces the magnetic conductivity of the silicon steel sheets, thereby decreasing the overall efficiency of the transformer.
Increased Iron Loss and Eddy Current Loss
Rust increases iron loss, including both hysteresis and eddy current losses, with a particularly significant effect on eddy current loss. This results in higher induced currents within the core, leading to increased heat and capacity loss.
By understanding and addressing these effects, the reliability and efficiency of transformers can be maintained and improved.
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