Enameled wire for large transformer

Abstract

The invention relates to an enameled wire for a large transformer, which comprises a core wire and an enameled coating located outside the core wire, wherein the enameled coating clads the core wire; and the core wire comprises an aluminum core and a copper layer cladding the aluminum core, and the diameter of the core wire is 3.000-5.000 mm. Through the adoption of the enameled wire, the diameter of the enameled copper clad aluminum wire can be effectively enlarged, the resistance of the enameled copper clad aluminum wire is reduced, and the use requirements of the large transformer can be satisfied.

Description

Technical field [0001] The invention relates to an enameled wire, in particular to an enameled wire for a large transformer. Background technique [0002] Enameled wire is a main type of winding wire. It consists of a conductor and an insulating layer. After the bare wire is softened by annealing, it is painted and baked many times. However, it is not easy to produce products that not only meet the requirements of the standards, but also meet the requirements of customers. It is affected by the quality of raw materials, process parameters, production equipment, environment and other factors. Therefore, the quality characteristics of various enameled wires are different, but they all have Mechanical properties, chemical properties, electrical properties, and thermal properties are four major properties. [0003] Copper clad aluminum enameled wire is one of the more commonly used enameled wires. Copper-clad aluminum enameled wire is a new type of electromagnetic wire using copper-c...

AI Technical Summary

Problems solved by technology

However, due to its own narrowness, it usually cannot be adopted by large transformers.

[0005] Large transformers often require the smaller the resistance, the better, which requires the copper-clad aluminum enameled wire to have a larger radius, the better, but the traditional copper-clad aluminum enameled wire cannot be used by large transformers due to its own radius limitation.

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