What are the advantages of aluminum strips and foil for dry transformers

The aluminium strip of dry transformer is the key raw material of transformer winding, and it is the strip of aluminum ingot by pressing and rolling.

Dry type transformer with aluminium strip and foil is made of high quality pure aluminum as raw materials, with high conductivity, soft characteristics, smooth surface and no burr, is an ideal and key raw material for production of dry type transformer and transformer winding.

Dry transformer with aluminum strip and foil materials generally choose 1060 aluminum strip, its aluminum content is more than 99.6%, so it is called pure aluminum plate, and is a commonly used series in the aluminum trip family. Advantages of this series of aluminum plates: the most commonly used series, the production process is relatively simple, the technology is relatively mature, the price has a huge advantage over other high-grade alloy aluminum plates. With good elongation and tensile strength, it can meet the requirements of conventional processing (stamping, stretching) with high formability. It is industrial pure aluminum, with high plasticity, corrosion resistance, electrical conductivity and thermal conductivity, but low strength, heat treatment cannot strengthen and the machinability is not good; Gas welding, hydrogen welding and contact welding, not easy brazing; Easy to bear various pressure processing and extension, bending.

The aluminum strip of the dry transformer has a high content of aluminum, and the conductivity and thermal conductivity of aluminum are only lower than the conventional metal of copper. Because the price of copper is much higher than that of aluminum, the most commonly used material in transformer trips is aluminum. On the application, aluminum trip and foil can make the dry type transformer has small volume, light weight, good insulation performance, flame retardant, no pollution, little partial discharge, moisture proof, stable and reliable operation, low noise and low maintenance cost advantages, so it is widely used in the high-rise building, underground facilities, business center, residential, hotels and humid coastal areas and other applications.