1, Oil Immersed Transformer low-voltage winding in addition to the small capacity of copper wire, generally use copper foil winding cylinder structure; The high voltage winding adopts the multi-layer cylinder structure, so that the ampere-turns distribution of the winding is balanced, the magnetic leakage is small, the mechanical strength is high, and the short-circuit resistance is strong. 2, the iron core and the winding are respectively using fastening measures, the height of the device, the low pressure lead and other fastening parts are with self-locking locking nuts, the use of no hanging core structure, can withstand the transport of the shock. 3, coil and core using vacuum drying, transformer oil using vacuum filter oil and oil injection process, so that the moisture inside the transformer to a minimum. 4. The oil tank uses corrugated sheet, which has respiratory function to compensate for the volume change of oil caused by temperature change, so the product has no oil storage tank, which obviously reduces the height of the transformer. 5, because the corrugated sheet replaces the oil storage tank, the transformer oil is isolated from the outside world, which effectively prevents the entry of oxygen and water, resulting in a decline in insulation performance. 6, according to the above five points of performance, to ensure that the oil-immersed transformer does not need to change oil in normal operation, greatly reducing the maintenance cost of the transformer, while extending the service life of the transformer.
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