a. The oil-immersed transformer low-voltage winding adopts a cylindrical structure with copper foil winding in addition to the small-capacity copper conductor; the high-voltage winding adopts a multi-layered cylinder structure, so that the winding ampere distribution is balanced and the magnetic flux leakage Small, high mechanical strength, strong resistance to short circuit.
b. The iron core and the winding are individually tightened. The fasteners, such as the height of the device and the low-voltage leads, are all equipped with self- locking locknuts. They are not designed to withstand the shock of transport.
c. The coils and cores are vacuum-dried. Transformer oil is vacuum filtered and filled with oil to minimize the moisture inside the transformer.
d. The fuel tank uses corrugated sheets. It has a breathing function to compensate for changes in the volume of the oil caused by temperature changes. Therefore, the product does not have an oil storage cabinet, which obviously reduces the height of the transformer.
e. Since the corrugated sheet replaces the oil conservator, the transformer oil is isolated from the outside, so that the entry of oxygen and moisture is effectively prevented and the insulation performance is reduced.
f. Based on the above five characteristics, it ensures that the oil-immersed transformer does not require oil change during normal operation, which greatly reduces the maintenance cost of the transformer and extends the service life of the transformer.