Enameled Copper Clad Aluminum Wire 21 AWG 0.72mm ECCA for Motor

• Customization: Available
• Insulation Level: C, R, N, H, F, B, E, A, Y
• Certification: ISO9001, RoHS, VDE
• Model NO.: QA
• Application: Transformer, Instrument, Electrical Equipment, Motor
• Shape: Round Wire
• Conductor Material: CCA
• Coclor: Natural
• Insulation: QA
• Layer: Single
• Name: ECCA
• Transport Package: Pallet
• Specification: 0.08-2.50
• Trademark: windoo
• Origin: China
• HS Code: 85441900
• Production Capacity: 2500t/Year
• Package Size: 22.00cm * 22.00cm * 30.00cm
• Package Gross Weight: 18.000kg

Product Description

Copper-clad aluminum is formed by concentrically cladding a copper layer on the surface of aluminum or aluminum alloy, and the thickness of the copper layer is more than 0.55mm. Due to the skin effect of high frequency signal transmission on the conductor, the cable TV signal is transmitted on the surface of the copper layer above 0.008mm.

Enameled wire is divided into different conductors, one is enameled copper wire and the other is ECCA wire. The English name of copper clad aluminum is: Cooper Clad Aluminum, so copper clad aluminum conductors are also often called: CCA conductors. Copper-clad aluminum composite wire was first introduced in Germany in the 1930s, and was subsequently promoted in the United Kingdom, the United States, France and other countries, and was widely used in various fields. CATV in the United States began to try copper-clad aluminum wires as early as 1968, and the consumption amounted to 30,000 tons per year. Now American countries have replaced pure copper cables with copper-clad aluminum cables. In recent years, my country's copper-clad aluminum enameled wire has also begun to be widely used by the home appliance industry.

We can compare copper-clad aluminum and pure copper in the following three aspects:

1,Mechanical properties

The strength and elongation of pure copper conductors are greater than that of ECCA wire, which means that pure copper is better than copper-clad aluminum in mechanical properties. From a design point of view, pure copper has the advantage of better mechanical strength than copper-clad aluminum, which is not necessarily required in practical application. Copper-clad aluminum is much lighter than copper, so copper-clad aluminum is lighter than copper in overall weight, which will bring convenience to transportation and production and construction. In addition, copper-clad aluminum is softer than copper, and the enameled wire produced with copper-clad aluminum conductors is better than copper in terms of flexibility.

 

2,Electrical properties

Because of the poor conductivity of aluminum, the DC resistance of the ECCA wire is higher than that of pure copper. Whether this has an effect mainly depends on what it is used for. If it is used for power supply, the copper-clad aluminum conductor will cause extra the power consumption, and the voltage drops more. When the frequency exceeds 5MHz, the AC resistance attenuation at this time has no obvious difference under these two different conductors. Of course, this is mainly due to the skin effect of high-frequency current. The higher the frequency, the closer the current flows to the surface of the conductor. The surface of the copper-clad aluminum conductor is actually pure copper material. When the frequency reaches a certain level, the entire current is plated. It flows in the copper material. At 5MHz, the current flows in a thickness of about 0.025mm near the surface, and the copper layer of copper clad aluminum is about twice as thick. For coaxial cables, because the transmitted signal is above 5MHz, the transmission effect of copper-clad aluminum conductors and pure copper conductors is the same. This can be proved by the attenuation of the actual test cable. Copper-clad aluminum is softer than pure copper conductors, and it is easy to straighten in the production process. Therefore, to a certain extent, it can be said that the return loss index of cables using copper-clad aluminum is better than that of pure copper conductors.

3,Economy

ECCA wire is sold by weight, and pure copper conductors are also sold by weight. The price of copper-clad aluminum enameled wire is cheaper than that of pure copper conductors. But the same weight of copper-clad aluminum is much longer than pure copper. The same weight, copper-clad aluminum wire is 2.5 times the length of copper wire, and the price is only a few hundred yuan per ton. Taken together, copper clad aluminum is very advantageous. Since copper-clad aluminum is relatively light, the transportation cost will also be reduced, which will bring certain convenience to production.

 

4,Ease of maintenance

The use of copper-clad aluminum for coaxial cables can reduce network failures. Due to the large difference in thermal expansion coefficient between the copper inner conductor and the aluminum outer conductor of the cable, in hot summer, the aluminum outer conductor stretches greatly, and the copper inner conductor is relatively retracted and cannot be fully contacted. to the elastic contacts in the plug socket; in the cold winter, the aluminum outer conductor shrinks greatly, causing the shielding layer to fall off. When the coaxial cable uses a copper-clad aluminum inner conductor, the difference in thermal expansion coefficient between it and the aluminum outer conductor is small. When the temperature changes, the fault of the cable core is greatly reduced, and the transmission quality of the network is improved.