Enamelled/Fibreglass/Nomex/Paper/Mica Covered Wires

Insulation description: Enamelled / Fibreglass / Nomex / Paper / Mica
Applications: high-voltage coils, relays, transformers, hand tool motors, electronic coils, etc.
Temperature resistance grade: According to the selected bottom insulation wire, there are 130, 155, 180, 200, 220 degrees and other temperature resistance grades

Enameled wire is a main type of winding wire. It is composed of a conductor and an insulating layer. After the bare wire is softened by annealing, it is painted and baked many times.

General purpose enameled wire (ordinary wire): Mainly used for winding wires in general motors, electrical appliances, instruments, transformers, etc., such as polyester enameled wire and modified polyester enameled wire.

According to SMM survey data, the operating rate of enameled wire in September was 71.32%, down 8.28% year-on-year, down 1.82% month-on-month, and 1.65% lower than the expected 72.97%. Among them, the operating rate of large enterprises was 71.56%, down 0.69% from the previous month; medium-sized enterprises fell by 4.06% to 71.50%, and small enterprises fell by 0.55% to 60.83%.

First, my country has become the first big country of lacquer wire production and consumption. With the transfer of the world manufacturing center, the global enameled wire market has also begun to China, China has become an important processing base of the world, especially after China’s accession to WTO, my country’s enameled wire industry It also achieves rapid development, the production of enameled wires has exceeded the US and Japan, which became the world’s first production big country and consumer. As the economy is constantly increasing, the export of the downstream industry in the enameled wire has also increased year by year, and the enameled wire industry has entered the international market. The subregional aggregation is remarkable.

Correspondence table of enameled wire diameter and resistance value
The resistivity of the copper wire ρ= 0.0172, the aluminum wire ρ = 0.0283, the wire resistance calculation formula:
R=ρ×L/S
(L = wire length, unit: meter, S = wire cross section, unit: mm^2)

The current mainly passes along the copper-clad aluminum wire on the surface of the wire, which is called the skin effect. The higher the frequency, the more obvious it is. The copper-clad aluminum wire uses this feature to save material. But its resistivity is slightly higher than that of pure copper wire, and the resistivity is also different with the thickness of the copper clad.

Product details :
Place of origin : Henan ,China(Mainland);
Brand name : Signi;
Type : Insulated;
Conductor material : Aluminum;
Conductor type : Solid;
Insulation material : Enameled;
Diameter : 0.025-4.5mm;
Color : Natural;
Thickness : Grade 1/2/3;
Thermal Class : 130-220c;
Application : Motor,transformer,welding machine and generator;

The difference between enameled aluminum wire and enameled copper wire of vibration motor: the resistivity of copper wire is 0.017, and the resistivity of aluminum wire is 0.028. The cross-sectional ratio of copper wire and aluminum wire interchange is 0.79:1, and six square copper wires are equivalent to ten square aluminum wires. The diameter of the aluminum wire is thicker than that of the copper wire, and the same aluminum wire of the stator slot will not fit.

The current enamel wire industry is relatively low due to the admission threshold, and therefore the production enterprises have more and more, and the market competition is constantly intensified, but in the high-end product field, there are not many companies that can enter, in the present, and future, The enamel wire business wants to achieve better development, and build brands and scale becomes more and more important.

The enameled wire manufacturer takes you to understand the high-temperature paint wrap of high-temperature paint wires, and it is necessary to judge, whether its appearance, size, and performance meet the technical standards of the product and user technical agreements. After the measurement, test, the technical standards of the product and the technical agreement of the product are compared to the requirements for qualified products, which does not meet the requirements for unqualified products.

What is the difference between magnet wire and enameled wire? Enameled wire is a type of magnet wire. but most people called the magnet wire in winding wire or enameled wire. Mostly used for Inductors, transformers, reactors, dry-type transformers, cast resin transformers

In the long-term thermal aging test, three or more temperature points are usually selected for accelerated aging, commonly known as “three-point aging”.

The samples for the aging test are stranded enameled wire pairs. The production of the stranded pairs should meet the requirements of ASTM D2307 or NEMA 1000 standards, including the weight to be applied when making the stranded pairs, the number of twisted turns, the effective length of the stranded area, and The length of the two ends of the twisted pair, etc. When making a twisted pair, the required force and the number of twist turns will vary depending on the diameter of the wire. The effective length of the stranded area has nothing to do with the wire diameter, the effective length is 121¡À6 mm, and the two ends are at least 50 mm long. At least 10 twisted pairs per temperature point and mounted on twisted pair racks for high temperature aging test.

Poor soldering is mainly manifested in that the paint film after soldering will not melt off after the soldering, which causes the phenomenon of poor soldering.

Double Glass-fiber Covered Rectangular Aluminum Wire is a kind of winding wire made by electrician round aluminum rod drawn or extruded into a rectangular conductor by a certain specification die, and then a double glass fiber insulation layer is wrapped on the rectangular conductor.

Enameled wire is the most widely used electromagnetic wire in the production of low-voltage products. A key performance requirement of this electromagnetic wire is the continuity of the paint film, which is to check the number of pinholes in the paint film under a certain length. When checking the number of pinholes, use a professional paint film continuity tester. The fewer the number of pinholes, the better the paint film integrity of the magnet wire.

Heat Level 180C Fiberglass Covered Copper Magnet Wire
Performance advantages: It has the characteristics of good voltage breakdown resistance and high mechanical strength of the insulating layer.
Product use: Mainly used for AC motors as windings.

The coating is a process of forming a uniform coating layer of a coating wire to form a uniform coating layer on a metal conductor. This is related to some physical phenomena and painting methods of liquid.

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

3.1 Elongation:
The standard refers to GB/T6109, inspection method: stretch the instrument
Calculation method: ratio of (length after stretching-length before stretching)/length before stretching;

3.2 Snap off:
The standard is to pull at a speed of 2 meters per second to check that the paint film is not cracked,

3.3 Round rod winding:
Wrap the enameled wires of different specifications and the corresponding copper rods around ten times to check that the paint film is not cracked. The diameter of the copper rods refers to the requirements of GB/T6109;

3.4 Thermal shock: Put the winding enameled wire in an oven (hanging in the middle of the oven) for 0.5 hours. The temperature of the oven corresponds to the specification requirements of the enameled wire. Refer to GB/T6109. After the drying, check that the paint film is not cracked.

Product Name:Oil Immersed Transformer Winding Wire
Type: round or rectangular wire
Features: Telephone paper, cable wire or 500KV transformer turn-to-turn insulation paper is used for insulation. After dipping.
Conductor Material:Aluminum or Copper
Application:used for Oil Immersed Transformer, transformer coils
Certificate:UL,RoHS
Thermal Class:105¡æ

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.

Question: During our production process, we found that one axis of enameled wire is wound around the axial inductance. This axis of enameled wire and other axis of enameled wire are wound on the same magnetic core. The inductance of the enameled wire with this axis is relatively high. We made 1mH inductance, and the enameled wire of the other axis was only 960uH, and the problematic wire of this axis was 1.025mH, and the inductance test frequency was 796kHz. (1) The number of stitches is the same as the number of turns, excluding the slip ring. (2) The 1-meter straight resistance is a bit smaller than that of other shafts. I personally think that the enameled wire contains magnetic substances, but if it contains magnetic substances, the resistivity should be greater, and the DC resistance should be greater. So please help to solve the problem, or have encountered this kind of problem before, please analyze it, thank you in advance!

The main advantages of fiberglass covered wire are:
1. The quality factor Q value is large;
2. Because it is twisted by multiple enameled wire bundles, it has good flexibility and can reduce the skin effect;
3. Because it is composed of polyurethane enameled wire, the dielectric loss angle is small, and it has direct solderability.
The disadvantage is: poor moisture resistance.

Type of magnetic wire is divided into enameled wire, wrapping wire, insulated wire, combined wires and others,Mainly used in motors, electrical appliances, instruments, transformers, etc., to generate electromagnetic effects by winding coils, and use the principle of electromagnetic induction to achieve the purpose of converting electrical energy to magnetic energy

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.

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.

The structure of enameled wire is very simple, consisting of conductor and insulating layer. Because of its high dielectric strength, small footprint and good heat dissipation, it is widely used as a coil winding in motors and transformers.

For Aromatic polyimide tape-covered aluminum magnet wire, after the aluminum magnet wire is taped with a tape that is 1.5 mm thick with 1.0 mm of this thickness being polyimide film and the remaining 0.5 mm being fluoroplastic, it is heated and heat-sealed.

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.

Oxidative Aluminum Wire (Anodized aluminium wire)belongs to the special electromagnetic wire and the insulation layer is the aluminum oxide.
Because of no thermal aging phenomenon, it can be used as insulation level of class 220.
The insulation layer of such product is thin, high temperature resistance and insulation performance stability,which is the best choice for low voltage winding wires with producing high temperature, poor environment, heat dissipation difficulty and so on.
It can widely be used in electromagnetic industries at home and abroad.

The temperature resistance index of Class 155 Reasonable Price Glass Fiber Covered Aluminum Round Wire has three grades: 130, 155, and 180, and the insulation thickness generally has four grades of 20, 30, 40, and 50. This product is widely used in windings of transformers, electromagnets, welding machines or other similar electrical equipment products. Electrician bare aluminum wire produced by extrusion process is the most ideal material for producing glass fiber coated aluminum wire.