The following is a detailed introduction of five commonly used Enameled Copper Wire:

1. Acetal enameled wire; The thermal grade is i05 and 120, which have good mechanical strength, adhesion, transformer oil resistance and refrigerant resistance. However, the product has poor moisture resistance, low thermal softening breakdown temperature, weak durability of benzene-alcohol mixed solvent and other defects. Currently, only a small amount of the product is used in windings of oil-immersed transformers and oil-filled motors.

2. Polyester and modified polyester enameled wire, ordinary polyester enameled wire, thermal grade 130, modified enameled wire thermal grade 155. This product has high mechanical strength, good elasticity, scratch resistance, adhesion, electrical properties and solvent resistance. It is currently one of the largest varieties in China, accounting for about 2/3. It is widely used in various motors, electrical appliances, meters, telecommunications equipment and household electrical appliances. The weakness of this product is poor thermal shock resistance and low moisture resistance.

3. Polyurethane enameled wire; The thermal grade is 130,155,180,200. The biggest characteristic is that it has direct weldability, good high-frequency resistance, easy colouring and good moisture resistance. It is widely used in electronic household appliances and precision instruments, telecommunications and meters. The weakness of this product is that its mechanical strength is slightly poor, its heat resistance is not high, and its flexibility and adhesiveness in producing large-sized wires are poor. Therefore, the specifications of this product are mostly small and medium-sized wires.

4. Polyesterimide/Polyamide Composite Enameled Wire, Thermal Grade 180 This product has good thermal shock resistance, high softening and breakdown temperature resistance, excellent mechanical strength, good solvent resistance and cryogen resistance, and its weakness is easy hydrolysis under closed conditions. It is widely used in windings with high heat resistance requirements such as motors, electrical appliances, meters, electric tools, electric power dry pressure devices, etc.

5. Polyesterimide/polyamide-imide composite enameled wire enamel is widely used at home and abroad at present. Its thermal grade is 200. The product has high heat resistance, cryogen resistance, severe cold resistance, radiation resistance and other characteristics, high mechanical strength, stable electrical performance, good chemical resistance and cryogen resistance, and strong overload capacity. Widely used in refrigerator compressors, air conditioning compressors, electric tools, explosion-proof motor and motors and electrical appliances used under high temperature, high cold, radiation resistance, overload and other conditions.

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