Copper film shielded transposition wire and production method

Abstract

The invention provides a copper film shielded transposition wire, which relates to the technical field of transformers. The structure includes that a shielding wire layer is sandwiched inside a single transposed conductor or between two combined transposed conductors, the single transposed conductor is composed of two rows of multiple single flat wires, the The shielded wire layer is copper film shielded wire layer. There is one copper film shielded wire layer, or two or more copper film shielded wires are arranged side by side. The structure of the copper film shielded wire is as follows: A copper film is provided on the outside, and an insulating material layer is provided on the outside of the copper film. The positive effects of the present invention are: overcome the deficiencies of the prior art, the copper film shielded transposition wire has a simple structure, good shielding effect, light weight, and saves copper material; it has wide application and is a good substitute for the common shielded transposition wire The product is especially suitable for the inner shielding wire used in the transformer winding; its manufacturing process is good, the efficiency is high, and the manufacturing cost is greatly saved.

Description

technical field [0001] The invention relates to the technical field of transformers. Background technique [0002] At present, when manufacturers of large-scale transformer products in my country use large cross-section winding wires, especially when using transposed wires, in order to improve the shielding effect, the shielding method usually adopted is to sandwich two rows of transposed wires or two sets of transposed wires. The way of paper-wrapped copper flat wire. As the paper-clad copper flat wire is sandwiched between two columns or two sets of transposition lines, as the height of the transposition line increases, the height of the sandwiched paper-clad copper flat wire becomes larger and larger, which causes the paper-clad copper flat wire The processing becomes more and more difficult, and because the higher the height of the transposed wire is, the copper flat wire sandwiched in the middle is deformed more and more during coil winding, which makes the coil winding...

AI Technical Summary

Problems solved by technology

It only solves the processing technology of paper-wrapped copper flat wire, but its shielding effect is reduced due to the insulation of the contact parts between several paper-wrapped copper flat wires. How to improve the shielding effect and winding process of winding wires becomes the winding Important research topics in the wire manufacturing industry

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