The Advantages and Disadvantages Of The Amorphous Alloy Dry Type Transformer

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The supplies utilized to make the winding and clamping gadgets of the amorphous alloy dry type transformer is basically the identical as those used in the frequent epoxy cast dry-type transformer. Nonetheless, the materials used to make the iron cores of both transformers are of nice difference. The former one has adopted a new high-tech product called the amorphous alloy.

The amorphous alloy is a thin magnetic material with a thickness of only about 0.03mm. It is made by using the extremely-fast cooling technology to forged the alloy material with a sure proportion into ribbon chips via the cooling float bowl. Compared with the cold-rolled silicon steel sheet, the amorphous alloy material has five advantages but also has 5 disadvantages, which deliver many difficulties to the design and manufacture of all types of distribution transformers.

Five advantages:

(1) Isotropic soft magnetic supplies;

(2) Low loss, about 30% of that of the silicon steel sheet;

(three) High electrical resistivity, about 3 times of that of the silicon metal sheet;

(four) Convenient subsequent processing (subsequent processing can get the required magnetism);

(5) The manufacturing process is environmentally friendly.

Five disadvantages:

(1) It is rather thin. The surface of the fabric just isn’t ideally smooth, and the filling coefficient of the iron core is about 0.86;

(2) Its hardness is way higher than that of the silicon metal sheet, which brings inconvenience to reducing and processing;

(3) It must receive annealing remedy;

(4) The fabric is fragile after annealing;

(5) Mechanical stress has an important influence on its performance.

Advantages of Amorphous Metal Transformers (AMT) Decrease no-load loss. As the no-load loss is lower, the temperature rise of transformer is lower. Better harmonic wave tolerances. Potential for lower total cost of ownership.

Its high permeability adds to its supreme combination for use in high frequency transformers and adjustable inductors. Actually, the high magnetic permeability along with with a low electrical conductivity of ferrites helps within the prevention of eddy currents.

The cores of typical transformers encompass stacks of laminations which are made from silicon metal with an virtually uniform crystalline construction (CRGO). In transformers with amorphous cores, a ribbon of metal is wound to form the core.

As the rankings are increased stepped or multi-stepped cores are wantred, which improve mechanical stability, reduce the size of imply turn and end in copper savings besides rising effectivity and improving regulation.

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