Heat Resistance Of Enameled Cca Wire

    1. enameled cca wire; thermal grade is i05 and 120, with good mechanical strength, adhesion, resistance to transformer oil and refrigerant, but the product has poor moisture resistance, low thermal softening breakdown temperature, and durable benzene-alcohol The mixed solvent performance is weak and other defects, currently only a small amount is used in the windings of oil-immersed transformers and oil-filled motors.
    2. Polyester and modified polyester enameled wire, ordinary polyester enameled wire, the thermal class is 130, and the thermal class of the modified enameled wire is 155. This product has high mechanical strength, good elasticity, scratch resistance, adhesion, electrical properties and solvent resistance. It is currently the largest product in my country, accounting for about two-thirds: widely used in various motors, Electrical appliances, meters, telecommunications equipment and home appliances; the weaknesses of this product are poor thermal shock resistance and low moisture resistance.
    3. Polyurethane enameled wire; thermal grade is 130, 155, 180, 200. The biggest feature is that it has direct solderability, good high frequency resistance, easy coloring, and good moisture resistance. It is widely used in electronic appliances, precision instruments, telecommunications, and meters. The weakness of this product is that its mechanical strength is slightly poor, and its heat resistance is not high. , And the flexibility and adhesion of the production of large-size wires are poor, so the product specifications are mostly small and fine lines.
    4. Polyesterimine/polyamide composite winding wire, thermal class 180. This product has good thermal shock resistance, high softening and breakdown temperature resistance, excellent mechanical strength, good solvent and refrigerant resistance, and the weakness is in sealing It is easy to be hydrolyzed under conditions, and it is widely used in windings of motors, electrical appliances, meters, and power tools with high requirements for heat resistance.