Iron core of power transformer

Abstract

An iron core of a power transformer is composed of two opened spiral type cores with semicircular sections arranged in parallel and an opened spiral core which surrounds the panes outside the two cores and also has a semicircular section. The sections of three stems are rotundity, step shape (circumscribed circle) and polygon (circumscribed circle). During the manufacture process, as the opened characteristics of the cores, loops can be independently coiled and the cores can be opened on the location of the opened clearance to mount or exchange the loops when in manufacturing and maintaining.

Description

Technical field [0001] The invention relates to an iron core assembled in a power transformer. Background technique [0002] The main parts of a power transformer are the iron core and the coil. The coil is made by winding high and low voltage copper wire and insulating layer. At present, most of the iron cores of domestic power transformers are laminated structures, which are formed by stacking silicon steel sheets. Since the laminated iron core has many oblique seams at the joints of each layer, the reluctance and iron loss increase, the excitation current of the transformer also increases, the power factor is reduced, and the power grid is seriously affected. quality of power supply. The presence of transformer core seams also leads to the problem of high operating noise. In order to overcome the defects of the above-mentioned laminated iron core. In recent years, many transformer manufacturers in China have adopted wound iron cores, which are also called wound iron ...

AI Technical Summary

Problems solved by technology

The invention completely solves the shortcomings of the low performance of the laminated iron core and the defects in the manufacturing process of the seamless rolled iron core.

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