CN201138580Y - Tin and copper wrapped aluminum bus - Google Patents

Abstract

The utility model relates to a tinning copper-plating alclad bus, the inside of which is an aluminum conductor and the outside is closely coated with a copper conductor; the utility model is characterized in that a tin layer is coated outside the copper conductor; the tinning copper-plating alclad bus not only can meet the property requirements of the original product, but also has a light weight and a lower cost, can not be oxidized in the air and can resist corrosion.

Description

The tin-coated copper plated aluminium bus

Technical field

This is practical to relate to a kind of lead, relate in particular to a kind of in light weight, cost is low, can be not oxidized in air, and have corrosion resistant tin-coated copper plated aluminium bus.

Background technology

In recent years, soared all the way by the copper valency that influences of international market, make with copper to be that the bus cost of conductor improves constantly, cause producer price to improve constantly, cause the enterprise that uses copper to produce bus to face huge pressure, under this market situation as conductor, relevant industry is being sought substitute as possible, under the situation that guarantees the like product performance, production cost is reduced, try to achieve existence so that produce the enterprise of bus.

Existing in order to solve based on the high shortcoming of the bus cost of copper conductor material, it is aluminium conductor that the dealer once released a kind of inside, the outside copper wrapped aluminum bus that closely coats copper conductor, this copper wrapped aluminum bus not only keeps the performance of copper conductor bus, and has advantage in light weight, that cost is low, but because there is oxidation in air easily in this copper wrapped aluminum bus, and the shortcoming of corrosion-resistant, therefore, in case copper is oxidized, corrosion, then influenced the electric conductivity of copper wrapped aluminum bus greatly.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome easily oxidized, corrosion that the prior art copper wrapped aluminum bus exists, and influence the defective of its electric conductivity greatly, and provide a kind of tin-coated copper plated aluminium bus, the utility model not only can satisfy the performance requirement of original product, and in light weight, cost is low, can be not oxidized in air, and have corrosion resistant advantage.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of tin-coated copper plated aluminium bus, its inside is provided with aluminium conductor, the outside copper conductor that closely coats, it is characterized in that: described copper conductor plates one deck tin outward again.

The utility model adopts copper clad aluminum conductor can play the effect of the AC impedance (resistance) of reduction high order harmonic component generation.In other use occasions, volume and corresponding technological measure by taking to improve copper in the copper cover aluminum satisfy the conductor DC resistance requirement.

And AC resistance is the main foundation of ampacity, principle according to kelvin effect, the surface of bus, it is big that the electric current that the internal unit area of the current ratio bus that its unit are is passed through passes through is wanted, that is to say, the inside of large size conductor is in the area that same conductor is equal to mutually, and the electric current that the inner specific surface of bus passes through is little, is the most reasonable, most economical so the bus inner conductor is formed with different metals with the bus external conductor.Particularly tin is better than copper as its conductivity of conductor and stability is better than copper, and is difficult for oxidation in air, and corrosion-resistant, uses so can substitute copper wrapped aluminum bus.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model sectional structure chart.

Embodiment

Consult shown in Figure 1, the utility model tin-coated copper plated aluminium bus, its inside is provided with aluminium conductor 1, copper conductor 2 tight metallized aluminum conductors 1, the outer one deck tin 3 that plate again of copper conductor 2.

The thickness of aluminium conductor 1 that is positioned at the middle part in the present embodiment is 8mm, and the thickness that is coated on the copper conductor 2 of aluminium conductor 1 outside is 0.99mm, and the thickness of outside tin coating 3 is 0.01mm, and gross thickness is 10mm.Wherein tin coating 3 is a prior art.

The sectional area of this tin-coated copper plated aluminium conductor is 10mm * 100mm in the present embodiment.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

In sum, the utility model is on structural design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant novel patent requirement is so mention application in accordance with the law.

Claims (1)

1, a kind of tin-coated copper plated aluminium bus, inside is aluminium conductor, the outside copper conductor that closely coats, it is characterized in that: described copper conductor plates one deck tin layer outward again.