Enamel coated wire (enameled wire) is an electromagnetic wire that is coated with an insulating paint layer on the surface of a conductor, and is widely used in fields such as motors, electrical appliances, and electronics. Its characteristics and uses are as follows:
>> Main Characteristics
1. High insulation
The paint film prevents electron movement and ensures electrical insulation through its tight molecular structure, such as the imide ring of polyimide, making it suitable for humid or chemically polluted environments
2. High temperature resistance
There is a significant difference in the thermal grade of different enameled wires. For example, polyimide enameled wire has a heat resistance of over 250 ℃, and polyester imide/polyamide imide composite layer enameled wire can reach 200 ℃, which is suitable for high-temperature motors, transformers and other scenarios
3. Mechanical strength and flexibility
The paint film is tough and has strong adhesion, and can withstand mechanical stresses such as winding and vibration. For example, the ignition coil of a car engine relies on its impact resistance
4. Chemical resistance
Some enameled wires (such as polyurethane enameled wires) have good resistance to oils, solvents, etc., and are suitable for industrial equipment
5. Electromagnetic compatibility
Uniform and dense paint film can shield electromagnetic interference, used in fields sensitive to electromagnetic fields such as computer motherboards and medical equipment
6. Corona resistance
Special paint layer design (such as adding nanoparticles) can suppress corona discharge and is suitable for high-voltage environments such as variable frequency motors and wind turbines
>> Main Purpose
1. Traditional industries
Electric motors and transformers: winding core materials, such as polyester enameled wire for ordinary motors and polyimide enameled wire for high-voltage transformers
Household appliances: Internal circuit connections such as air conditioners and refrigerators need to balance conductivity and temperature resistance
Industrial equipment: electric tools, explosion-proof motors, and other applications that require vibration and corrosion resistance
2. Emerging fields
New energy vehicles: corona resistant enameled wire is used for motor and battery management systems to ensure safe high-power operation
5G and Communication: Low loss enameled wire is required for high-frequency signal transmission, supporting the construction of base stations and data centers
Medical equipment: Electrocardiograms and other devices rely on high-precision, low-noise enameled wires to transmit signals
3. Development trend
Environmentally friendly enameled wire, customized solutions, and intelligent manufacturing technology will drive industry upgrading and meet the needs of fields such as electric vehicles and intelligent manufacturing
In summary, enameled wire covers a full range of applications from traditional manufacturing to emerging technologies through diversified insulation materials and performance optimization.
| Film coated enameled twisted wire | |
| Film wrapped wire refers to a reinforced insulation type twisted wire that is wrapped with one or more layers of insulation film at a certain overlap rate on the outside of ordinary twisted wire. It has the advantages of good voltage resistance and high mechanical strength. The product has a working voltage of 1000Vrms and a working frequency of up to 500kHz, and can be widely used in various high-frequency and high-voltage power conversion equipment. | |
| Single line diameter (mm) | 0.04-1.00 |
| Number of twisted strands | 2-7000 |
| Large completed outer diameter (mm) | 12 |
| Insulation grade of paint film | 130/155/180 |
| Type of paint film | Polyurethane |
| Membrane | Polyester film (PET), polytetrafluoroethylene film (F4), polyimide film (PI) |
| Membrane type | Only substrate,substrate adhesive layer composite,substrate self-adhesive layer composite |
| Membrane UL rating | PET film is 155 grade high, PI film is 220 grade high |
| Film color | Natural white/gold color |
| Membrane overlap ratio | >75% |
| Product Features | Good voltage resistance and good adhesion of insulation layer |
| Breakdown voltage (V) | >7000 |
| Application | 5G base station power supply, electric vehicle charging station, induction charging, inverter welding machine, automotive electronics, ultrasonic equipment, induction heating equipment, etc |
| Scroll specifications | PT-15/PT-25/PN500 |
| Product Certification | ISO9001//SO14001/IATF16949,UL/RoHS/REACHVDE(F703) |
| Types of film wrapped wires | Membrane coating material | Product characteristics (What are the differences in characteristics between different film wrapped wire materials) |
| ML-T | PET (Polyethylene terephthalate) | Good waterproof performance, high pressure resistance, direct weldability, not resistant to high temperature. When the wire is cut, one end of the film will scatter by 1-3 centimeters |
| ML-I | PI (Polyimide) | Good waterproof performance, high pressure resistance, high temperature resistance, cannot be directly welded. When the wire is cut, one end of the film will scatter by 1-3 centimeters |
| ML-N | PEN (polyethylene naphthalate) | Good waterproof performance, high pressure resistance, direct weldability, and high temperature resistance between PET and PI. When the wire is cut, one end of the film will scatter by 1-3 centimeters |
| ML-T Adhesive film | PET Adhesive film | Good waterproof performance, high voltage resistance, direct weldability, tight adhesion between insulation layer and wire, not resistant to high temperature |
| ML-I Adhesive film | PI Adhesive film | Good waterproof performance, high voltage resistance, high temperature resistance, tight adhesion between insulation layer and wire, not suitable for direct welding |
| ML-N Adhesive film | PEN Adhesive film | Good waterproof performance, high voltage resistance, direct weldability, tight adhesion between insulation layer and wire, high temperature resistance between PET and PI |
