With the gradual understanding of engineering applications is aluminum cable providers, aluminum cable market is growing at rapid momentum of rapid development, how to detect and determine aluminum cable in practical applications, which basically is based on performance indicators and engineering applications must accurate grasp of the basics.

1, pressed core factor

There are traditional aluminum cables and power cables and auxiliary and other process structures are some differences, the use of aluminum conductor aluminum cable monofilament pressed partnership approach, its core squeezed coefficient of 97%, the conductor is very dense, and traditional copper cable, aluminum cable conductor cross-section on the can clearly see the difference (the production process of conventional cables, pressed core factor can only reach about 82%).

2, flexible performance

Aluminum cable is used in ASTM-B800 8000 series aluminum alloy wire for electrical control, adding an appropriate amount of copper (Cu), iron (Fe), magnesium (Mg) & hellip; ... and so on rare earth intermediate aluminum alloy material through a special synthesis annealing process development of new environmentally friendly energy-saving high-tech power cable, which conductor flexible super performance, this super flexible performance assures safety performance aluminum cable meets or exceeds the practical application of copper cable, aluminum cable while giving practical install the application brought a very big advantage.

In the actual inspection judgment, the direct hand fold test to obtain the aluminum alloy conductor is very flexible, can be repeatedly folded or as the rope is wound repeatedly, destructive violent folding aluminum single-wire, experimental results requires a minimum of 18 times to and from cracks or breakage, while the average aluminum core monofilaments generally folded three times out of the cracks, the five absolute to fracture, a significant disadvantage of ordinary aluminum wire is brittle and high, as long as when you install certain twist angle, the conductor will have a crack, gap will heat, corrosion, fire is an important reason, which is that it can not be universally applied times the cause of death.

3, the cable structure

Aluminum cable core line pressed partnership approach, conductor cross-section is circular core (traditional multi-core cable sector), insulated three-color co-extruded cross-linked polyethylene insulation technology, core arrangement rules, the entire root cable round whole flexible.

4, core glossy

Since the rare earth alloy aluminum alloy conductor material added during the smelting conductor crystals result of optimization, core cross section shiny and bright, high brightness, and traditional aluminum cables have significant sensory differences.

5, creep properties

Basically the same creep properties and alloy conductor Copper conductor through experiments that: the yield strength of copper is 6.0 alloy conductor 54 is basically the same, and copper conductor, is 300% aluminum conductors.

6, extending performance

Elongation is an important indicator of the mechanical properties of the conductor, and the merits of the product is able to withstand external size of an important symbol. But also is an important indicator of the mechanical properties of the cable conductor. Aluminum cable elongation after annealing treatment can reach 30%, and an elongation of 30% copper, ordinary aluminum rod elongation of 15%, is an important indicator to replace copper.

7, the tensile strength

Only half of the aluminum alloy conductor copper conductors (113.8: 220MPa), since the density of aluminum is only 30.4% of the copper conductor, which in the context of the same electrical properties of the aluminum alloy conductor cross-sectional area, even up to 150% of the copper conductor cross-sectional area, weight aluminum alloy conductors, only 45% of the copper conductor, which makes the tensile strength of the aluminum alloy conductor with respect to certain advantages as well as copper conductors. In large-span power engineering, because its share advantage in the premise of its tensile strength equivalent advantage is particularly prominent. Not only save a lot of bridge, installation engineers reduce labor intensity and speed up the installation process, saving the construction period, greatly reducing the overall cost of installation.

8, anti-corrosion

Aluminum conductor itself has excellent corrosion resistance, good corrosion resistance when the energy from the aluminum alloy conductors inherent corrosion properties, its surface in contact with air, it will immediately form a layer thickness of about 2 to dense oxide film of 4μm this layer of oxide film is very dense, especially tolerance of various forms of corrosion, so it has to withstand the harshest environmental characteristics in real life than copper extended over 10 years. (At present, the use of alloy cables not a long time, also 3 to 5 years, so from domestic virtually impossible to verify the actual life, can only refer to the actual use of foreign countries, Europe and the United States to use the current time 40 in view of his actual life it is more durable than copper.)

9, electrical properties

The resistivity of aluminum is between aluminum and copper, aluminum slightly higher, but lower than copper, provided at the same cut-off flow, the weight of the aluminum alloy of the same length only half the copper conductors. If the conductivity of copper by 100%, the electrical conductivity of the alloy conductor is about 62.5%, the proportion of the alloy is 2.7, the proportion of copper is 8.9, then (8.9 / 2.7) × (0.612 / 1) = 2, that is, 2 per unit weight of the same alloy of the resistance and a unit mass of copper resistance, so when the cross-sectional area of the alloy conductor is 1.5 times that of copper, the same as its electrical properties, namely, the achievement of the copper same cross-sectional flow, resistance, and voltage loss.