TUFR composite winding wire for track traction transformer

Abstract

The invention discloses a TUFR composite winding wire for a track traction transformer and relates to the technical field of track transportation equipment. The TUFR composite winding wire comprises at least two composite insulated wires arranged in an aramid insulating total taped covering. Each composite insulated wire consists of an aluminium conductor core and an aramid insulating layer, wherein the aramid insulating layer is lapped outside the aluminium conductor core. Due to the adoption of the TUFR composite winding wire, the weight of the track traction transformer product is reduced, the cost of the track traction transformer is reduced and the magnetic field distribution cannot be influenced due to cracking of a coil. Due to considerable electric conduction quantity of the coil of the product, the single wire cannot bear such a strong current, and the additional loss generated by a transformer load resistance, which is caused by incomplete transposition, is reduced, so that the eddy-current loss is reduced, the cost is reduced and the energy is saved.

Description

technical field [0001] The invention relates to the technical field of rail transportation equipment, in particular to the technical field of production of TUFR composite winding wires for traction transformers in rail transportation equipment. Background technique [0002] The transportation infrastructure between cities and inter-city in my country has always been very weak. Compared with the international medium-sized countries, the gap is obvious, and the distance with the developed countries is even farther. In the past two years, the state has proposed to increase the investment in infrastructure. The investment in the city's transportation facilities is unprecedented. Among them, electrified urban rail, intercity railway, and high-speed railway are developing rapidly. Large-scale rail transit facilities must be guaranteed by large-scale electrification, which has led to the rapid heating up of the entire rail traction motor and traction transformer market. TUFR composi...

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Problems solved by technology

[0003]At present, the polyimide-F46 film sintered winding wire for rail motors has formed a market scale in China, and major magnet wire factories have launched one after another. It has begun to take shape, but the TUFR composite winding wires for rail traction transformers have not yet been fully localized, and some still rely on imports, with high costs

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