CN-224232374-U - Economical low-voltage multi-core cable with copper/aluminum alloy shared conductor

CN224232374UCN 224232374 UCN224232374 UCN 224232374UCN-224232374-U

Abstract

The utility model provides a copper/aluminum alloy common conductor economical low pressure multicore cable, relates to multicore cable technical field, and it includes phase conductor and neutral conductor, and the phase conductor includes the phase conductor, and the phase conductor is made by pure copper material, and neutral conductor includes the neutral conductor, and the neutral conductor is made by aluminum alloy material. The phase core is used as a core part for transmitting electric energy, copper with better conductivity and safety reliability is adopted, and the phase core can stably operate in a complex power transmission environment. The neutral wire core with auxiliary function is replaced by aluminum alloy, so that the cost is effectively reduced, and the weight of the cable is greatly reduced. The multi-core cable fully considers the characteristics of different conductor materials, aims to realize the optimal balance of performance and cost, and has better application value.

Inventors

YU XIAOFU
LUO SHAOWU
WANG SHANSHAN
LU XINGHUA
ZHOU BAOYAN
WANG SIQI

Assignees

昆明电缆集团昆电工电缆有限公司

Dates

Publication Date: 20260512
Application Date: 20250430

Claims (9)

1. The economical low-voltage multi-core cable with the copper/aluminum alloy shared conductor is characterized by comprising a phase conductor and a neutral conductor, wherein the phase conductor comprises a phase conductor and a first insulating layer coated outside the phase conductor, the phase conductor is made of pure copper, the neutral conductor comprises a neutral conductor and a second insulating layer coated outside the neutral conductor, and the neutral conductor is made of an aluminum alloy.
2. The economical low-voltage multi-core cable with the copper/aluminum alloy shared conductor according to claim 1, wherein the first insulating layer and the second insulating layer are both crosslinked polyethylene insulating layers, a first elastic buffer layer is further arranged between the second insulating layer and the neutral conductor, and the first elastic buffer layer is an ethylene propylene diene monomer rubber elastic layer.
3. The copper/aluminum alloy common conductor economical low-voltage multi-core cable according to claim 2, wherein the first insulating layer is 1.4-3.0 mm.
4. The economical low-voltage multi-core cable with copper/aluminum alloy shared conductors according to claim 3, wherein the thickness of the second insulating layer is 0.6-1.4 mm, and the thickness of the first elastic buffer layer is 0.8-1.6 mm.
5. The economical low-voltage multi-core cable with copper/aluminum alloy shared conductors according to claim 4, wherein the sectional areas of the phase conductor and the neutral conductor are equivalent, and the sectional areas of the phase conductor and the neutral conductor are 16-300 mm 2 .
6. The economical low-voltage multi-core cable with copper/aluminum alloy shared conductors according to claim 5, wherein the phase conductors are formed by twisting monofilaments with diameters of 1.33-3.75 mm, the twisting pitch ratio is 16-30D, and the neutral conductors are formed by twisting monofilaments with diameters of 1.68-3.75 mm, and the twisting pitch ratio is 12-30D.
7. The economical low-voltage multi-core cable with the copper/aluminum alloy shared conductor according to claim 6, wherein an inner liner layer, an armor layer and an outer sheath layer are further arranged outside the phase wire core and the neutral wire core in sequence, and a filler is filled between the inner liner layer and the phase wire core and between the inner liner layer and the neutral wire core.
8. The copper/aluminum alloy common conductor economical low-voltage multi-core cable of claim 7, further comprising a ground wire core, wherein the ground wire core comprises a ground wire conductor, and a second elastic buffer layer and a third insulating layer are coated outside the ground wire conductor, and wherein the ground wire conductor is made of an aluminum alloy material.
9. The copper/aluminum alloy common conductor economical low-voltage multi-core cable according to claim 8, wherein the ground wire core and the neutral wire core have comparable cross-sectional areas.

Description

Economical low-voltage multi-core cable with copper/aluminum alloy shared conductor Technical Field The utility model relates to the technical field of multi-core cables, in particular to an economical low-voltage multi-core cable with a copper/aluminum alloy shared conductor. Background Copper aluminum is the primary metal for the core conductor in current cable applications. In contrast, copper has more excellent conductivity, much lower resistivity than aluminum, higher current transmission efficiency of copper core cables and lower electric energy loss under the same sectional area. In addition, copper also has better corrosion resistance and mechanical strength, and by virtue of the excellent performance, the copper core cable is widely applied. The aluminum alloy is used as a wire core conductor, and has higher volume resistivity and relatively poorer conductivity, but the mass resistivity (namely the resistivity of unit mass metal) is better than that of a copper conductor, so that the aluminum alloy has good advantages in the aspects of cost and portability, and is better than that of a common aluminum conductor in the aspects of mechanical strength and compressive creep resistance. In the prior art, partial replacement of copper core wires is usually realized by adopting copper-clad aluminum, but the method greatly improves the complexity of the process, and electrochemical corrosion of a copper-aluminum contact interface is also a difficult problem. Disclosure of utility model The utility model aims to provide an economic low-voltage multi-core cable with copper/aluminum alloy shared conductors, which has novel structure and conductivity of the copper core cable and can effectively reduce cost. Embodiments of the present utility model are implemented as follows: The economical low-voltage multi-core cable with the copper/aluminum alloy shared conductor comprises a phase conductor and a neutral conductor, wherein the phase conductor comprises a phase conductor and a first insulating layer coated outside the phase conductor, the phase conductor is made of pure copper, the neutral conductor comprises a neutral conductor and a second insulating layer coated outside the conductor, and the neutral conductor is made of aluminum alloy. Further, in other preferred embodiments of the present utility model, the insulating layer is an insulating layer with excellent properties such as crosslinked polyethylene, polypropylene, etc. Further, in other preferred embodiments of the present utility model, the thickness of the insulating layer with different specifications is 0.8-3.0 mm. Further, in other preferred embodiments of the present utility model, the cross-sectional areas of the phase conductor and the neutral conductor are 16-300 mm 2. Further, in other preferred embodiments of the present utility model, the phase conductor is formed by twisting monofilaments having a diameter of 1.33-3.75 mm, the twisting pitch ratio is 16-30D, and the neutral conductor is formed by twisting monofilaments having a diameter of 1.68-3.75 mm, the twisting pitch ratio is 12-30D. Further, in other preferred embodiments of the present utility model, an inner liner layer, an armor layer and an outer sheath layer are further provided in order outside the phase core and the neutral core, and a filler is filled between the inner liner layer and the phase core and between the inner liner layer and the neutral core. Further, in other preferred embodiments of the present utility model, the economical low-voltage multi-core cable with copper/aluminum alloy shared conductor further comprises a ground wire core, wherein the ground wire core comprises a ground wire conductor and an insulating layer coated outside the ground wire conductor, and the ground wire conductor is made of an aluminum alloy material. Further, in other preferred embodiments of the present utility model, the cross-sectional areas of the ground wire core and the neutral wire core are comparable. The embodiment of the utility model has the beneficial effects that: the embodiment of the utility model provides a copper/aluminum alloy common conductor economic low-voltage multi-core cable, which comprises a phase conductor and a neutral conductor, wherein the phase conductor comprises a phase conductor made of pure copper, the neutral conductor comprises a neutral conductor made of aluminum alloy. The phase core is used as a core part for transmitting electric energy, copper with better conductivity and safety reliability is adopted, and the phase core can stably operate in a complex power transmission environment. The neutral wire core with auxiliary function is replaced by aluminum alloy, so that the cost is effectively reduced, and the weight of the cable is greatly reduced. The multi-core cable fully considers the characteristics of different conductor materials, aims to realize the optimal balance of performance and cost, and has better application value. Drawings In