zhengzhou tasuu windingwire industry co.,,ltd enameled cca wire

Enameled Copper Clad Aluminium Winding Wire

All copper-aluminum composition parameters of enameled CCAW are strictly defined in national standards, classified by the volume ratio of the outer copper layer to the total conductor volume, with three standardized grades for different application scenarios:

  1. ‌10 Grade Series‌: Copper layer volume ratio ranges from 8% to 12%, corresponding to aluminum content of 88% to 92%. The density of this grade is only 3.32g/cm³, which is 37% of the density of pure copper wire of the same cross-section, making it the lightest specification for high-frequency signal transmission scenarios.
  2. ‌15 Grade Series‌: Copper layer volume ratio ranges from 13% to 17%, corresponding to aluminum content of 83% to 87%. This is the most widely used general-purpose grade, with a density of 3.63g/cm³, and its DC resistivity is controlled below 0.02676 Ω·mm²/m, meeting the conductivity requirements of most low and medium frequency winding applications.
  3. ‌20 Grade Series‌: Copper layer volume ratio ranges from 18% to 22%, corresponding to aluminum content of 78% to 82%. This high copper-content grade has electrical performance closest to pure copper, and is designed for high-current, high-mechanical-strength working conditions.
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Driven by the global “aluminum replacing copper” lightweight and cost-reduction trend, enameled CCAW has expanded its application boundaries far beyond traditional CATV and audio equipment scenarios in recent years:

  1. ‌New Energy Vehicle Electrical Systems‌: In 2024, leading automotive component supplier TE Connectivity launched a new generation of high-frequency enameled CCAW that has been deployed in mass-produced new energy vehicle models. This product reduces the weight of on-board motor windings by more than 40% compared with pure copper enameled wire, while its high-frequency AC transmission performance is equivalent to pure copper under the skin effect, perfectly matching the working characteristics of 800V high-voltage platform drive motors. It helps automakers cut down the total weight of the wiring harness by up to 20% and reduce material costs by over 40%, supporting the industry’s goal of extending vehicle range through lightweight design.
  2. ‌High-frequency Communication Base Station Components‌: The enameled CCAW produced via the advanced core-filling continuous casting process achieves a copper-aluminum interface bonding strength of 70-100MPa, and has been widely adopted in 5G base station RF inductors and filter windings. Its high-frequency transmission performance at 1MHz is completely consistent with pure copper, while the lighter conductor effectively reduces the load of base station antenna brackets, lowering the overall construction and operation cost of communication facilities.
  3. ‌High-efficiency Household Appliance Motors‌: In the stator windings of high-power energy-saving fans, variable-frequency air conditioners and new energy storage inverters, enameled CCAW has gradually replaced part of pure copper enameled wire. Its excellent bending performance reduces the difficulty of automatic high-speed winding, and the stable electrical performance ensures that the operating efficiency of the motor is not compromised, bringing considerable cost reduction effects for home appliance manufacturers.

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zhengzhou tasuu windingwire industry co.,,ltd enameled cca wireEnameled Copper Clad Aluminium Winding Wire
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