Enamelled Copper is the name given to a class of wires which are manufactured in the shape of a coil. Enameled Aluminium Wire & Enamelled Copper Wire are a braided wire covered with a thin protective layer of enamels (dielectric) oil to prevent the wire surface from becoming in a conductive short circuit when properly wound into wires. When a metal or steel wire is in an electrical circuit, the probability of a short-circuit is greatly increased if the contact resistance is high. In addition, due to the large amount of energy that is required to conduct an electric current, it is possible for the contact resistance to increase along with the current-conducting capacity, resulting in poor power quality and shorting of the circuit.
Some metals including copper have impurities that prevent them from conducting well. To overcome the problem, the wire is treated with an enamelled copper wire varnish that bonds the metallic substance to the wire surface. The enamelled coating is designed to provide a physical barrier against moisture, thereby making the wire rust proof and preventing its corrosion. This allows the wires to be placed in areas where there is a risk of the presence of moisture without having to suffer from rust. The wire can also be protected from oxidation caused by the effects of ultraviolet light by the application of an electrochemical varnish.
An enamelled copper wire, with a e101843 dielectric core, has excellent electrical and mechanical properties. It has low tensile strength, however, due to the resistance to thermal expansion at room temperature. Due to this property, the wire may be exposed to temperatures as high as 250 degrees centigrade. However, its electrical and mechanical properties can withstand these extreme temperatures for long durations without any significant degradation.
Enamelled copper wire can be used for various applications due to its excellent electrical and mechanical properties. Because of its excellent electrical conductivity, it is often incorporated into electrical wiring systems. It possesses an energy-efficient core which makes it a popular choice for conductors due to its ability to maintain electrical stability at elevated temperatures. The superior thermal conductivity combined with excellent insulating qualities make it ideal for connecting conductors through electrical insulators.
Enamelled copper wire is also used to build thermal conductors such as heat exchangers, heat pipes and oil furnaces. Due to its excellent thermal conductivity and excellent electrical conductivity, it is often integrated into thermal safety glass fibers for use in these applications. Thermal classifications of enamelled copper wire are based on the thickness of its core metal foil. The thicker the core material, the better thermal conductivity and electrical conductivity it possesses.
Enamelled copper wire is available in different core thicknesses and nominal wire gauges. Most manufacturers produce flat cut and round forms because of their ease of manufacturing. Flat cut and round wires are available in standard gauge and extra-gauge varieties. Some manufacturers also produce ultra-thin polyesterimide tubes that contain multiple layers of enamelled copper wire enamel.
There are four different thermal classifications for enamelled copper wire. UL approved is the most common form of this type of wire. UL classifies this type of wire as high-density but low-density. This means that the amount of pure copper present in each coil is greater than the amount of pure steel, nickel alloy or dielectric material used to construct the coil.
The highest grade of enamelled round copper wire is e101843. This form of enameled wire is made from a combination of premium pure copper and premium non-metallic copper alloys. The premium non-metallic alloys have been specially designed to resist corrosion from environmental factors such as moisture and humidity. These materials will not allow the galvanic current to conduct when the metal wire is exposed to these factors.