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Raw Aluminum Foil Materials In Coils For Insulation
The technical performance comparison of aluminum foil and copper foil dry-type transformer coils: Overview Nowadays, first-class dry-type transformer manufacturers in Europe, America, Japan, South Korea, etc. all use copper foil. have generally used aluminum foil instead of copper foil or copper wire to wind low voltage and The advantages of high-voltage coils have been recognized and experienced by the majority of users. Shanghai Fuji Electric Transformer Co., Ltd. conforms to the trend of the development of dry transformers in the world today, adopting the advanced design and Process technology, selection of excellent raw materials, especially the selection of high-tech physical properties of aluminum foil containing rare ten metals as the conductors of the high and low voltage coils, to meet the requirements of miniaturization, light weight, anti-cracking and aging, etc. However, in the Chinese market, because most dry-type transformer manufacturers still have gaps in technical processes, they cannot perfectly solve the reliable and stable copper-aluminum connection technology between the high and low voltage coil lead terminals (copper) and the aluminum foil coil. The problem is that there are still many second and third-rate companies that have not yet mastered the process technology when using foil windings for high-voltage coils. Therefore, copper wires can only be used to wind high-voltage coils. This will inevitably increase the volume of the dry transformer and increase the loss. big. And because the voltage between conductor layers increases, the insulation reliability is reduced. At the same time, due to the reduction of the electrostatic capacitance between the conductors, the ability of the high-voltage coil to resist the overvoltage of the working is reduced.which affects the service life and operational safety of the dry changer. The conductivity of aluminum is lower than that of copper, and its specific gravity is also smaller than that of copper. It is more suitable for the conductor of dry-type transformer coils. Since the conductivity of aluminum is lower than that of copper, in order to obtain the same resistance value, aluminum must have a cross-sectional area of 164 times that of copper. But the density of aluminum is only one-third of copper, so when the same cathode value and the same capacity of electricity are transmitted, the weight of aluminum is only one-half of copper. As the weight of aluminum coil is only half of copper, it can better meet the requirements of lightweight. Under normal circumstances, the cost of materials can also be reduced, and its price-performance ratio is much better than that of copper coil dry-type transformers. The thermal stress resistance of aluminum foil coils is much better than that of copper foil or copper wire coils. 
Aluminum Foil Jumbo Roll For Food Containers the processes used in the foil manufacturing process are being improved to reduce air pollution and hazardous waste
