Performance Characteristics Of Oil-immersed Transformers

a. Except for small-capacity copper wires, the low-voltage windings of oil-immersed transformers generally adopt a cylindrical structure with copper foil wound around the shaft; the high-voltage windings adopt a multi-layer cylindrical structure to balance the ampere-turn distribution of the windings and reduce magnetic flux leakage. Small, high mechanical strength and strong short circuit resistance.
b. The iron core and windings each adopt fastening measures. The fastening parts such as the height of the body and the low-voltage leads are equipped with self-locking lock nuts. It adopts a non-suspended structure and can withstand the vibration of transportation.
c. The coils and core are vacuum dried, and the transformer oil adopts vacuum oil filtration and oil filling processes to minimize moisture inside the transformer.
d. The oil tank uses a corrugated sheet, which has a breathing function to compensate for the volume change of the oil caused by temperature changes. Therefore, this product does not have an oil conservator, 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 world, which effectively prevents oxygen and moisture from entering and causing a decrease in insulation performance.
f. Based on the above five points of performance, it is ensured that the oil-immersed transformer does not need to change oil during normal operation, greatly reducing the maintenance cost of the transformer and extending the service life of the transformer.