What are the Advantages of Volumized Aluminum Core High Voltage Cable over Copper Core?

Volumized aluminum core high voltage cable utilizes a physical foaming process to create a honeycomb conductor structure. Its performance advantages stem from the synergistic effect of aluminum's properties and structural innovations. Compared to traditional copper core cables, this cable demonstrates significant engineering value in specific applications.

The honeycomb conductor of volumized aluminum core high voltage cable increases the effective cross-sectional area for current flow, compensating for the inherent resistivity differences of aluminum. The foamed structure creates enclosed air chambers, blocking oxidation channels for the conductor. The thermal expansion coefficient of the aluminum core is more closely matched to the insulation layer, reducing the risk of interfacial stress cracking during temperature fluctuations.

The cable's reduced weight per unit length effectively reduces the load on the cable bridge system. Reel transport allows for a larger single-axle load, reducing logistics turnover costs. In earthquake-prone areas, it reduces inertial impact on the suspension system, improving seismic safety.

The dense oxide film on the aluminum surface resists moisture corrosion and maintains conductive stability in coastal salt spray environments. It can be recycled through low-temperature smelting at the end of its life, with processing energy consumption significantly lower than copper purification. The insulation layer's formula is compatible with the expansion structure, allowing the honeycomb cells to deform synergistically during bending to prevent localized fractures.

How do volumized aluminum core high voltage cables maintain temperature under high-current conditions?

The honeycomb structure increases the heat dissipation surface area of the volumized aluminum core high voltage cable, ensuring more uniform eddy current heat distribution. The non-magnetic aluminum core eliminates heat loss due to iron loss, eliminating induced heating in adjacent metal components. This reduces the thermal resistance between the conductor and the insulation layer, slowing the thermal aging of the insulation material.