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Amorphous steel is limited to foils of about 50 μm thickness. The mechanical properties of amorphous steel make stamping laminations for electric motors difficult. Since amorphous ribbon can be cast to any specific width under roughly 13 inches and can be sheared with relative ease, it is a suitable material for wound electrical transformer cores.
The stacking factor (also lamination factor or space factor [1]) is a measure used in electrical transformer design and some other electrical machines. It is the ratio of the effective cross-sectional area of the transformer core to the physical cross-sectional area of the transformer core. The two are different because of the way cores are ...
Here the lower saturation magnetization of amorphous cores tends to result in a lower efficiency at full load. Using more copper and core material it is possible to compensate for this. So high efficiency AMTs can be more efficient at low and high load, though at a larger size.
Silicon steel has low hysteresis loss, and the laminated construction prevents eddy currents from flowing in the core, which dissipates power in the resistance of the steel. The efficiency of typical distribution transformers is between about 98 and 99 percent. [8] [9] Where large numbers of transformers are made to standard designs, a wound C ...
The energy dissipated is proportional to the area enclosed by the loop. To prevent them, the cores of AC electromagnets are made of stacks of thin steel sheets, or laminations, oriented parallel to the magnetic field, with an insulating coating on the surface. The insulation layers prevent eddy current from flowing between the sheets.
Philadelphia teacher Ellen Greenberg's death was ruled a suicide after the 27-year-old was found with 20 stab wounds; her fiancé makes his first public statement on her death.
Bloody Mary Dip. Turn your favorite brunch cocktail into a creamy dip! It's zesty with just the right amount of heat. Top with chopped olives and serve with either veggies, crackers, or chips.
A small addition of silicon to iron (around 3%) results in a dramatic increase of the resistivity of the metal, up to four times higher. [citation needed] The higher resistivity reduces the eddy currents, so silicon steel is used in transformer cores. Further increase in silicon concentration impairs the steel's mechanical properties, causing ...