ClassF Enameled Copper Wire

Ordinary polyester enameled copper wire temperature level is 130. However, the modified polyester enameled copper wire’s temperature level can be reached 155. 

The product has high mechanical strength , good flexibility, adhesion, electrical properties and solvent resistance. But class f enameled copper wire has poor thermal shock resistance and low moisture resistance properties.

Class f enameled wire is the largest kind of China's current production capacity, accounting for about two thirds. Class f enameled copperwire can be used widely in a variety of electrical, electronics, instrumentation, telecommunications equipment and household electrical appliances.

Class 240 Magnet Wire

Type: Oxidative Aluminum Wire

Conductor: aluminum

Diameter: round: 1.5- 7.2 flat: a:1.8-3 b: 4-20

Temp class:240

Standard: GB

Bobbin: 70 kg wooden spool

Application: lifting electromagnet, reactors and other low-voltage and high current electromagnetic winding.

Polyester and modified polyester enameled wire

Polyester and modified polyester enameled wire

Ordinary polyester enameled heat level of 130,
After the modified enameled heat level is 155.

Polyester and modified polyester enameled wire have high mechanical strength, and has good flexibility, adhesion, electrical properties and solvent resistance. But thermal shock resistance weakness is poor, and have low moisture resistance properties.

It is China's current production capacity of the largest species, accounting for about two thirds of the wide range of applications on a variety of electrical, electronics, instrumentation, telecommunications equipment and household electrical appliances.

Insulated Winding Wire

Zhengzhou LP Industry Co., Ltd upholds the concept of “quality first’’. We can provide clients best products and the best service. Our company as a insulted copper wire suppliers has insulted copper winding wire , insulted winding wire, and insulted magnetic wire.  

To meet different clients’ requirements, our insulted wire has simple insulted winding wire, double insulted winding wire and triple insulted magnet wire or triple winding wire. Many clients who want to buy insulted magnet wire or buy plastic insulted magnet wire will choose our company. And if some clients want to buy paper insulted copper wire, our company can be better.

Oxidative Aluminum Wire

OurOxidative Round/Flat Aluminum Wire(Strip)’s insulation layer is AL2O3. The layer has smooth surface, no abrasion and uniform color.

Our Oxidative Round/Flat Aluminum Wire(Strip) uses special technology and can reduce cost.

Our Oxidative Round/Flat Aluminum Wire(Strip) can apply for low-voltage windings which uses with high temperature, bad environment and heat dissipation difficulty.

Our Oxidative Round/Flat Aluminum Wire(Strip) has fine insulation layer, good heat resistance and stable insulation.

NOMEX Paper Covered Wire

NOMEX Paper Covered Wire is a kind of electric wire wrapping with NOMEX insulated paper from America DuPont .NOMEX insulating paper has good electrical, high chemical and mechanical integrity and its elasticity , flexibility, tear resistance , moisture resistance and abrasion resistance are very good. Because of its acid corrosion, it can be compatible with all kinds of varnish, sticky compatible mixture , transformer fluids, lubricating oils and refrigerants . Because NOMEX product is not easily digested , it will not be damaged by insects, fungi and molds . NOMEX products’ mechanical properties were not affected at a temperature no higher than 200 ℃. The product can maintain at least 10 years long, even if the continuous violence placed 220 ℃ high temperature.

NOMEXPaper Covered Wire is applicable to mobile transformers, traction transformers, pole-mounted distribution transformers, power substations, rectifiers, electric transformers and other oil-immersed transformer coil windings. Oil-immersed transformers using NOMEX wrapped magnet wire can bring many economic, environmental and safety benefits that can reduce weight, reduce the volume, reduce transformer oil, improve safety, reduce flammability of transformers, increase the capacity and reduce energy loss and so on.

Distinctions between Insulated Wire and Enameled Wire

We all know that magnet wire is insulated wire, playing insulation role. If some people who do not understand its nature might be confused with the magnet wire and insulated wire, because their main properties are insulation. In fact, enameled magnet wire and insulated wires are different in nature and their usage occasions have big difference. Insulated wire which we talk daily is typically used in high-frequency properties, but enameled wires use seldom in this area.

Their usage occasions’ difference depends on the material of the insulating layers’ difference. The insulation layer of enameled wire has not good resistance for high-frequency. But the high frequency function of the insulated wire is very good. In the high-frequency current environment, the high frequency current is mainly conducted through the outer of conductor. However, low-frequency current is very different because it is mainly conducted through the entire cross-section of conductor. It also determines the main difference.


From this perspective, the conductive density of insulated wire should be less than the density of enameled wire. The reason is that the insulated wire at high frequency environment uses mainly the outer surface of conductor. However enameled wire at low frequency environment applies essentially the entire cross-section of conductor. The difference only depend on the use of the environment. From here, we can see that the differences between both of them are obvious, and not difficult to distinguish.

Zhengzhou LPIndustry Co., Ltd is a professional manufacture of magnet wire. Our company can provide many kinds of enameled wire. Our company uphold the concept of “quality first”, we are committed to creating excess value of clients.

The Notes of the Enameled Wire’s Use

Something should be confirmed before using

Before enameled wires use in winding machine, it should be careful to check enameled models, specifications whether meet the requirements, so as to avoid abnormal phenomenon before using.

Something should be careful during conveying

Because of thin layer of enameled wires, enameled wire is damaged easily by sharp objects. Therefore, the process of moving should to be careful to prevent damage caused by the collision of enameled wire.

Something should be careful during storage

During storage, maintaining the package integrity of the enameled wire is the first thing in order to prevent contamination of the packages’ breakage. The storage of enameled wire usually should be away from dust, metal chips, moisture and sunlight.

Something should be careful during the winding process

Winding process scratch: Because the surface of enameled wire is a layer of insulation, wire is scratched easily by metal objects’ corners. Therefore the winding process must pay attention to mechanical equipment parts in contact with the wire and minimize external force upon enameled wire to avoid paint damage.

Winding tension: During the winding process, the tension applied to the wire should be small as far as possible in order to minimize performance changes of enameled wire.

Removal of the film

Combustion such as the alcohol lamp burning method.

Mechanical stripping method such as the special patent leather stripper.

Chemicals treatment method such as the paint remover.

Some Knowledge about Refrigerant

Refrigerant is the working fluid which is in refrigeration and air conditioning systems to transfer thermal energy to produce the effect of freezing. It can be divided into categories according to work method, namely the Primary and the Secondary refrigerant. Classified according to material properties, it can be divided into Natural refrigerants and Synthetic refrigerant.

In the air conditioning system, it is the substance that makes heat begin to transfer through evaporation and condensation. It is always known as Freon.

Ideal Refrigerant  

non-toxic, non-explosive, non-corrosive metal and non-metallic effect, no burning, easy to detect leakage, chemical stability, non-destructive for lubricating oil, with more latent heat of vaporization, environmentally friendly.

Secondary refrigerant and refrigerant agent are collectively called refrigerant. In air conditioning systems, it can transfer thermal energy to produce cooling effect. Freon is an absorb easily heat into a gas, and give out heat easily to become liquid. In the early time, refrigeration plants use ammonia as freon, ammonia can give out heat easily to become liquid upon compression. When the liquid becomes gas, it will need heat.

Every common air-conditioners are used Freon CFCs. But previously these CFCs would destroy the ozone layer. Nowadays scientists have now developed the CFCs which does not destroy the ozone layer.

Common Refrigerant
 R12；R22；R134a；R407c；R410a

Because of the corrosion of refrigerant, general enameled wire will reduce life span. But Zhengzhou LP Industry Co.,Ltd has many kinds of enameled wire which have good refrigerant resistance.

Performance Comparison between Enameled Aluminum Wire and Enameled Copper Wire

Performance Comparison: Chart One

Performance	Unit	Aluminum	Copper	Remarks
Tensile Strength	N/m㎡	120	260
Resistivity（20℃）	Ω.mm2/m	≤0.028264	≤0.017241
Temperature Resistance Coefficient	aR /℃-1	0.00429	0.00393	Pure Metal
Thermal Expansion Coefficient	Μm/m. ℃	23.8	16.6
Heat Transfer Coefficient	W/m.K	226	402
Melting Point	℃	660.4	1083	Pure Metal
Boiling Point	℃	2467	2567	Pure Metal
Density	g/mm³	2.703	8.92	Pure Metal

Performance Comparison: Chart Two

Performance	Enameled Aluminum Wire	Enameled Copper Wire
Direct Current Resistance（IACS）	100%	62%---65%
Breakdown Voltage	Good	Good
Film Continuity	Good	Good
Elongation	Excellent	Excellent
Resilience	Good	Excellent
Coiling	Good	Good
Degradation Resistance	Good	Excellent
Single Paint	Excellent	Good
Repeated Paint	Excellent	Bad

The Differences Impact on the Use: the Design of Electric Machinery

1,  The diameter selection of conductor

2,  Motor wire groove design

Reason: the contrast of resistance value

The Differences Impact on the Use :the Method of Paint Removing

1, The Paint Removing of Enameled Aluminum Wire in the Incoming Inspection Process

Special paint remover----class 130 and class 155 enameled aluminum wire

Concentrated sulfuric acid---all types of enameled aluminum wire

2, The Paint Removing of Enameled Aluminum Wire in the Incoming Inspection Process

Special paint remover----class 130 and class 155 enameled aluminum wire

Stripping salt---- all types of enameled aluminum wire

Mechanical stripping---large types of enameled aluminum wire

The Differences Impact on the Use: Attended Mode

The attended mode of enameled aluminum wire

1, Paint removing + Dedicated solder wire

2, Paint removing+ Special flux+ Ordinary solder

3, Terminal Connection

The Differences Impact on the Use :Winding

1, Because the tensile strength of aluminum wire is smaller than copper wire, the winding speed of aluminum wire is slower than copper wire.

2, At the same time, because of smaller tensile strength, winging tension of enameled aluminum wire will be smaller than copper wire.

The Development of China’s Enameled Wire Industry

What is enameled wire?

Enameledwire regards as winding for electromagnetic coil using insulation paint as an insulating coating, also known as magnet wire. Enameled wire is the main raw materials for electromagnetic windings of electrical, electronics, household appliances, telecommunications, and electronic instruments.

The Present Situation of China’s Enameled Wire Industry

After joining the WTO, with the rapid development of industrial electronics, household appliances, telecommunications, electronic products, enameled wire has a broader applications and markets. China has become the world's manufacturing center and processing base of enameled wire. Chinese enameled wire production and sale accounts for about 30 percent of global production. Chinese production of enameled wire in the last twenty years increase more than 10% per year. It can be predicted that it will increase to about 50% and China can become a real big and strong enameled wire production.

National tiny electromagnetic enameled wire sales from 2004 to 2006  (including imports) was approximately 290,000 tons, 310,000 tons and 340,000 tons with an average annual growth rate of over 8%. Among them, the line field of the relay grow especially. The average annual sales increase of 20%. Electronic components become lighter and thinner and consumers pursue for thin and tiny electromagnetic. Because of those reasons, demand of enameled wire grows year after year. Total fine electromagnetic enameled wire’s sales in major market amounted to 460,000 tons in 2010. The average annual increase of about 9%. In 2012, this data was 544,000 tons.

Some problems in China’s enameled wire industry

Because the wide use of the relays, micro-motors, electronic transformers, solenoid valves and other electronic components in automobiles, household appliances, mobile phones, computers, office supplies and other fields, fine electromagnetic enameled wire grows steadily as an important raw material for electronic components. Through years of development, China has become the largest producer and user of relays, micro motors and electronic transformers and other electronic components. But due to the gap of process, technology and equipment of  international, fine enameled wire production capacity in the country is far unable to meet the demand. Chinese fine enameled wire can only have about 30% of the amount from the domestic manufacturers.

The future situation of China’s enameled wire industry

Chinese future growth on the part of local micro electromagnetic enameled demand from the market demand for natural growth, partly from import substitution, especially the development of the huge potential in the field of import substitution. According to the special committee investigation and analysis China Electrical Equipment Industrial Association Branch Wire and Cable wire, Chinese will become  a truly big and strong country of enameled wire production.

Zhengzhou LP Industry Co., Ltd

As a China’s professional manufacture of magnet wire, Zhengzhou LP Industry Co., Ltd can provide different kinds of enameled wires, such as enameled round or flat aluminum wire, enameled round or flat copper wire, ultra fine rectangular enameled copper wire and so on. Zhengzhou LP Industry Co., Ltd can provide clients best products with best quality and best service.