7 type of enameled wire

Best Selling 155 Class Enamelled Copper/Aluminum Winding Wire includes copper wire and aluminum wire used for transformers, inductors, motors, generators, dry type transformer, Cast Resin Transformers. Thermal Class:Class 155, popular used for low voltage dry type transformers.

Thermal Class 105 / 133 / 155 Grade Enameled Wire includes
Polyethylene formaldehyde enameled copper wire (PVF)
Polyester enameled copper wire (PEW)
Polyurethane enameled copper wire (UEW).
Application: Normally used for Oil-filled transformers, motors, micro motors, transformers and high frequency coils, relays, magnetized coils

Flat enameled wire is a type of enameled wire. It is a winding wire made of oxygen-free copper rods or electrical aluminum rods that are drawn, extruded or rolled by a certain specification die, and then coated with insulating paint for many times. The thickness is from 0.025mm To 2mm, the width is generally less than 5mm, and its aspect ratio ranges from 2:1 to 50:1. Flat enameled wire has a wide range of uses, especially in the windings of various electrical equipment such as telecommunication equipment, transformers, motors and generators.

According to the characteristics and uses of insulation, winding wires can be divided into four categories: enameled wires, wrapped wires, special winding wires, and inorganic composite winding wires.

Enameled wire is widely used in our production and life. The paint it uses is a kind of paint that can produce a good insulating layer between the wires in the winding.
Enameled wire is made on the basis of copper wire. Simply put, enameled wire is a layer of insulator on the copper wire, usually plastic. Enameled wire paint is a kind of outer layer of bare copper wire, alloy wire and glass wire covered wire of various wire diameters to improve and stabilize the performance of enameled wire. It has high mechanical strength, resistance to Freon refrigerant, good compatibility with impregnating paint, and can meet the requirements of heat resistance, impact resistance, oil resistance, etc.

The heat resistance class of enameled wire is the ambient temperature where the enameled wire can work normally for a long time (above 20000h).

Winding wires used in electrical equipment are usually called magnetic wires. In other words, “magnetic wires are used to exchange electrical energy and magnetic energy.” Magnetic wire is roughly divided into enameled wire (insulation coated) and coated wire (fiber/film insulation) and their combinations. The two types of magnetic wires and their performance are very different. ASTM (American Society for Testing and Materials) B193, no more than 0.017241 ohm (square millimeter/meter), the film or coating should meet the latest version of ANSI, ASTM or NEMA applicable standards, and modify the specified resin. The modified resin is Chemically changed resin, or containing one or more additives to retain the basic chemical characteristics of the original resin to enhance certain performance or application characteristics, the coated conductor needs to meet all the required test requirements of the appropriate NEMA standard (UL certification project) .

The enamel wire is a wire having an insulating layer, which is a transformation of electromagnetic energy in a winding form, also known as a winding wire.

Glass-fiber covered aluminum magnet wire used to have weak coating strength (abrasion resistance, shock resistance, and flexibility). However, that disadvantage has been significantly improved recently by refining material selection and manufacturing methods. The demand for glass-fiber covered aluminum magnet wire is increasing as the wires have excellent uniformity and electrical properties under high temperatures and humidity.

Another important usage of copper is in manufacturing wire gauges that are largely use in measuring the diameter of wire.
Similarly aluminium is also largely use for electrical application.

Aromatic polyimide enameled wire has good heat resistance, softening breakdown resistance, radiation resistance, severe cold resistance and chemical resistance. Among them, many test indicators such as unidirectional scratching, breakdown voltage, and thermal softening are far Far better than ordinary enameled wire.

ISO Certificated Polyimide Round Enamel Coated Magnet Wire has better performance than all other types of enameled wires. Polyimide paint film has only abrasion resistance slightly worse than polyester and polyvinyl acetal enameled wires. In order to improve this performance, most of the current Use polyester imide and polyamide imide to prepare enameled wire, which can increase the solid content of the paint, but the heat resistance is somewhat reduced.

The paint is a process of painting the paint of the enameled wire to form a uniform lacquer layer of a thickness on the metal conductor. This is related to several physical phenomena and painting methods of liquid.

The samples for tensile and thermal shock testing were 3 pieces of 254mm enameled wire.

First pull the enameled wire to the required elongation at a rate of 3.7-4.6 m/sec, then wrap the jerked sample around the mandrel, and then put the wrapped sample into the oven at the specified temperature for 30 minutes. It needs to be suspended in the oven. After leaving the oven, inspect the baked samples for cracking or peeling of the paint film. In this test, the diameter of the mandrel is usually 3 times the diameter of the enameled wire.

The specified temperature of the oven is set according to the temperature specified for the enameled wire of this ANSI Type in the NEMA MW1000 standard, which is usually the temperature grade of the enameled wire +20¡ãC.

The samples for the dielectric strength test are also twisted pairs, and the number is 5 pairs. During the test, the voltage was applied at a boosting rate of 500V/S until breakdown, and the voltage at the time of breakdown was recorded. The requirements for dielectric strength in the NEMA MW1000 standard will vary according to different wire diameters, different paint film thicknesses, and different enameled wire types.

Three-layer insulated wire structure
High-frequency transformer triple-insulated wire is a high-performance insulated wire, so as the name suggests, this wire has three insulation layers with a core wire in the middle.
The first layer The first layer is golden yellow polyamine film, its thickness is a few microns, but it can withstand 3KV pulse high voltage
The second layer is a spray paint coating with high insulation,
The third layer is a transparent glass fiber layer. The total thickness of the insulating layer is only 20-100um. Its advantage is high insulation strength, and any two layers can withstand a safe voltage of 3000V AC, and the current density is large.

Round Enameled Wire is one of round wire, and single wire for using electric field. The testing performance of Round Enameled Wire is important, the application of enameled wire is in accordance with different performance.

The selection criterion of the electromagnetic wire is not considered for resistance, as the problem of resistance and fever can be done by selecting the same cross-sectional wire, it is the main consideration of the thick wire or the thin wire is mainly considered Operability.

Insulation, also called insulating coatings, is a kind of coating with excellent electrical insulation. It has good electrochemical properties, thermal properties, mechanical properties and chemical properties, mostly varnishes, but also colored paints. Insulating paint is a special paint in the paint category. Insulating varnish is an important insulating material based on high molecular polymers that can be cured into an insulating film or insulation under certain conditions. Insulating paint is composed of base material, flame retardant, curing agent, pigment and filler, and solvent. It introduces its composition, usage classification, grade classification, requirements, development trend, etc. in detail.

The wrapped wire is made of natural silk, polyester fiber, glass fiber, insulating paper or synthetic resin film, etc., tightly wrapped on the conductive wire core to form an insulating layer. There are also insulating layers wrapped around the enameled wire. In addition to thin-film insulation, others such as glass filaments need to be dipped in adhesive insulating varnish to improve their electrical, mechanical and moisture-proof properties. In fact, they are combined insulation.

Copper Clad Aluminum Wire is a new enameled wire, is composed of aluminum conductor covered with copper materials, maybe self-bonding, also called self-bonding enameled wire. And the short word is ECCA.

Compared with general round wires, flat enameled wires have the following advantages:
Higher floor area ratio and better use of space: The high conductor density enables coils and components of the same size to achieve higher efficiency, save materials and reduce costs.

Generally speaking, UL certified enameled wire needs to do four tests:
Thermal Aging Test (Full Thermal Aging Test or One Temperature Thermal Aging Test)
Dielectric Strength Test
Elongation and Heat Shock Test
Infrared Analysis – IR

1. Cutting
The enameled wire is composed of a conductor and an insulator, and the hardness of the two parts is very soft, so it can be cut by using a TabCUT-200 precision cutting machine with a general SiC cutting chip. Since the insulator is coated on the conductor, and its hardness and ductility are quite different, and the insulating layer has a certain degree of peeling, it is better to use some soft materials such as tin foil, rubber, etc. to wrap the cutting part when cutting. Up to prevent the insulation layer at the fracture from peeling off after cutting.

1. Acetal enamel wire.
2. Polyester enameled wire
3.Pu enamel wire.
4.Polyester iminelin wire
5.Polyimide enameled wire
6. Polyamide imide enameled wire

Nomex Paper Covered Copper Aluminium Enameled Wire is a kind of electromagnetic wire, which is specially used to manufacture winding coils of various oil-immersed transformers. It has good insulation on the outside and good conductivity on the inside. It is the heart of the transformer.

Magnet Wire: enameled wire, winding wire, enamelled wire, magnetic wire, conductor covered
Type: copper winding wire, aluminum enameled wire
Application: motors, generators, transformers, and electric vehicles
Thermal Class: 130, 155, 180, 200, 220, 240

Principle: Water molecule (HHO) decomposes water into oxygen and hydrogen through electrolysis. Hydrogen is combustible. Oxygen supports combustion. These two gases are ignited to form a hydrogen-oxygen flame. In layman’s terms, “water turns into fire”

Main Applications:
All kinds of household electric motors, vacuum cleaner motor, electric motor
All kinds of transformers, inductors, rectifiers
All kinds of fan motor
All kinds of high frequency electric appliance

1. Conductor resistance ¡ª The resistance of a conductor is proportional to its length and inversely proportional to its cross-sectional area.
2. Conductivity¡ªBased on the resistance 1/58ohm (0.017241 ohm) of a standard soft copper wire with a length of 1m and a cross-sectional area of 1mm2 at 20¡æ, it is called 100% conductivity. The greater the resistance, the lower the conductivity, and the two are inversely proportional.
3. Bending resistance¡ªfix one end of the single wire, add weight to the other end to make it vertically downward, and then bend it back and forth 180 times until the wire breaks. The more bending times, the stronger the bending resistance.
4. Tensile breaking force¡ªthe maximum load weight or force applied to the specimen to break it during a tensile test.
5. Tensile strength¡ªthe breaking force per unit area to bear when the sample is broken during the tensile test.
6. Elongation ¡ª the ratio of the length of the sample after being stretched until it breaks to the original length at the specified standard distance. Conductors have different impedances at different temperatures.
Generally, 20¡ãC or 25¡ãC is the standard. The higher the temperature, the greater the impedance.