Phase:Three Coil Structure:Toroidal Frequency:50/60Hz Material:Copper Winding Application:Industrial Power Supplies Cooling Method:ANAF
Amorphous alloy transformer is a kind of low-loss and energy-efficient power transformer. This type of transformer uses iron-based amorphous metal as the iron core. Since the material does not have a long-range ordered structure, its magnetization and demagnetization are easier than ordinary magnetic materials. Therefore, the iron loss (ie, no-load loss) of an amorphous alloy transformer is 70-80% lower than that of a conventional transformer generally using silicon steel as an iron core.
1.Hign mechanical strength, safe and reliable operation.
2.Low noise and small volume, friendly installation and free maintenance.
3.High insulation and low partial discharge, long life.
4.Good humidity resistance and fireproofing.
(1) The hardness of the amorphous alloy sheet material is very high, and it is difficult to cut with conventional tools, so the design should consider reducing the amount of shear.
(2) The thickness of the single piece of amorphous alloy is extremely thin, and the surface of the material is not very flat, so the core filling factor is low.
(3) Amorphous alloys are very sensitive to mechanical stress. In structural design, the traditional design scheme with iron core as the main load-bearing structural component must be avoided.
(4) In order to obtain excellent low loss characteristics, the amorphous alloy iron chip must be annealed.
(5) From the electrical performance. In order to reduce the amount of shearing of the iron chip, the core of the entire product is composed of four separate core frames side by side, and each phase winding is sleeved on two independent frames of the magnetic circuit. In addition to the fundamental magnetic flux, the magnetic flux in each frame also has the third harmonic magnetic flux. In the two coil cores of a winding, the third harmonic magnetic flux is exactly opposite in phase, numerically. Equal, so the third harmonic flux vector sum in each set of windings is zero. If the primary side is D connection, there is a loop of the third harmonic current. When the voltage waveform of the secondary side is induced, there will be no third harmonic voltage component.
The biggest advantage of the amorphous alloy iron core distribution transformer is that the no-load loss value is extremely low. Whether or not to ensure the no-load loss value in the end is the core issue to be considered in the entire design process. When the product structure is arranged, in addition to considering that the amorphous alloy core itself is not affected by external forces, the characteristics of the amorphous alloy must be accurately and reasonably selected during the calculation. In addition to this design idea, the following three requirements must be followed: (1) Due to the low saturation magnetic density of amorphous alloy materials, the rated magnetic flux density should not be selected too high during product design. Generally, a good no-load loss value can be obtained by selecting a magnetic flux density of 1.3 to 1.35T.
(2) The thickness of the single piece of amorphous alloy material is only 0.03mm, so its lamination coefficient can only reach 82% to 86%.
(3) In order to enable users to obtain the benefits of maintenance-free or less maintenance, the products of amorphous alloy distribution transformers are now designed as fully sealed structures.
The iron core consists of four separate iron core frames in the same plane to form a three-phase five-column type, which must be annealed, and has cross-yoke joints, and its cross-section is rectangular. The winding has a rectangular cross-section and can be individually wound and formed into a double or multi-layer rectangular layer. The fuel tank is a fully sealed and maintenance-free corrugated structure.
Suitable for environments with high fire prevention and big load fluctuation requirements, such as:offshore oil platforms, power plant, metallurgy, chemical industry and mining building materials.