size

One of the main characteristics that make aluminium Magnet wire suitable for a wide range of applications is the thin enameled insulation layer. Transformers, motors, and generators are all machines based on coils, which are devices that use large coils to generate magnetic fields and currents. The smaller these devices are, the stronger they are. Because enameled aluminum enameled wire and enameled copper enameled wire are insulated by a thin layer of enameled wire, rather than other types of thicker insulating materials, such as paper, glass fiber, mica, etc. Since the enameled aluminum wire or enameled copper wire occupies less space in the formation of the coil, the coil is more effective, more compact, and more efficient. Like CCA wire , it is an important insulated wire.

Conductivity

Enameled aluminum winding wires and enameled copper winding wires are widely used in electrical equipment due to their electrical conductivity. Aluminum enameled wire and copper enameled wire are used to carry current. In particular, the resistance of enameled copper magnet wire is lower than almost any other insulated wire. This means that a generator that uses enameled copper wire will generate more electricity than a generator that uses most other materials. Motor coils made of enameled copper winding wire will produce greater movement. Transformers made of enameled aluminum wire or enameled copper wire will reduce energy loss.

preservative

The third feature of enameled copper wire/enameled aluminum wire is that they have strong corrosion resistance, so they can be used in these devices. Enameled aluminum and copper enameled magnet wires have a long service life and are the materials of choice for circuits.

The mechanical, electrical and chemical properties of enameled aluminum magnet wires are different from those of copper magnet wires because of the inherent differences in conductor materials. These differences are reflected in certain test procedures and/or performance requirements for aluminum enameled wires, such as elongation, adhesion and flexibility, thermal shock, scratch resistance, continuity and heat resistance.

The advantage of aluminum enameled wire is its light weight. This product is widely used in electric tools, ballasts, automotive electronics, refrigerator and air-conditioning compressor motors, televisions, electric stoves, microwave ovens, various transformers and other various electronic coil motors and appliances.

Enameled aluminum magnet wire is sometimes used in large transformers and motors, but due to its low conductivity, the cross-sectional area of ​​aluminum enameled wire must be 1.6 times that of copper wire in order to obtain comparable DC resistance. Magnet wires with a smaller diameter usually have a circular cross-section. Thicker aluminum magnet wires are usually square or rectangular (with rounded corners) to allow more efficient use of the available winding space.

Modern enameled aluminum enameled wires or enameled copper enameled wires usually use one to three layers of polymer film insulating materials (usually with two different compositions) to provide a tough, continuous insulating layer. Magnet wire insulation film uses (in order of increasing temperature range) polyvinyl formal or Formvar (PVF), polyurethane, polyamide (PUW), polyester (PEW), polyester-polyimide (EIW), Polyamide-polyimide (or amide-imide) (AI-EIW) and polyimide (AIW). The polyimide insulated magnet wire can work at temperatures up to 250°C. Generally, the insulation of thicker square or enameled aluminum or copper electromagnetic coils is reinforced by wrapping with high-temperature polyimide or glass fiber tape, and the complete winding is usually vacuum impregnated with insulating varnish to improve the insulation strength and long-term reliability ***. Winding.

Other types of insulated conductors, such as glass fiber insulated paint copper/aluminum round and flat wire, nomex insulated copper/aluminum round and flat wire, kraft paper insulated copper/aluminum round and flat wire, mica insulated copper/aluminum round and flat wire, Kapton insulation Copper/aluminum round and rectangular wires, and polyester film insulated copper/aluminum round and rectangular wires are also widely used in various applications around the world, such as motors, transformers and reactors.

Various applications of enameled aluminum wire and copper enameled wire

Double-coated enameled aluminum wire/copper wire is suitable for all “H+” (220°C and 200°C) and above applications, such as dry-type transformers, stator winding fractions and integral HP motors, DC magnetic fields and armatures Windings, motors are suitable for sealing grades, hand tools, chemical industries, furnaces and high torque, continuous ratings, all household appliances, mechanical motors, automotive electrical, and coil applications with lacquer or unpainted lacquer. Air Conditioning System.

Single-layer enameled wire is suitable for all “H”, “F” and “B” applications, such as dry-type transformers, stator winding fraction H.P. Motor, DC magnetic field and armature winding. Wires coated with polyester have good chemical resistance and are compatible with all common impregnating varnishes, including high-temperature modified phenolic polyester and other varnishes that do not contain reactive solvents.