Oil Immersed Transformer has following Features and Characteristics:
A. The low-voltage winding of oil immersed transformer uses the cylindrical structure of copper foil winding except for the small capacity of copper wire.The high-voltage winding adopts the multi-layer cylindrical structure, which makes the winding’s ampere-turn distribution balanced, has small magnetic leakage, high mechanical strength and strong short-circuit resistance.
B. The iron core and winding adopt respective tightening measures. The tightening parts of the body height and low-voltage lead are all equipped with self-locking anti-loosening nuts. The non-suspension structure is adopted to withstand the shock of transportation.
C. The coils and cores are dried in vacuum, and the transformer oil is filtered and injected in vacuum to minimize the moisture inside the transformer.
D. The oil tank adopts corrugated plate, which has the function of breathing to compensate for the volume change of oil caused by temperature change. Therefore, the product has no oil storage tank, which obviously reduces the height of transformer.
E. Because the corrugated plate replaces the oil storage tank, the transformer oil is isolated from the outside world, which effectively prevents the entry of oxygen and water and leads to the decline of insulation performance.
F. According to the above five performances, the oil-immersed transformer does not need to change oil during normal operation, which greatly reduces the maintenance cost of transformer and prolongs the service life of transformer.