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Aluminium core cables are aluminium conductor cables made of aluminium, and the designation adopts the first letter "L" of aluminium.
Aluminium core cable is an aluminium conductor cable made of aluminium, the code name adopts the first letter of aluminium "L". Aluminium core cable generally refers to copper-clad aluminium cable, refers to the aluminium core wire instead of copper as the main body of the cable, the outer bread a certain proportion of copper layer of wire and cable.
Aluminium core cable consists of aluminium core, insulation, sheath and connector.
Classification
1. According to the core: single-core, two-core, three-core, four-core, five-core, multi-core.
2. According to the use of points: power cables, control cables, signal cables.
3. According to specifications: 1.0, 1.5, 2.5, 4, 6, 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240, 300, 400, 800 and so on.
4. According to the number of insulation layers: single-layer insulation, double-layer insulation 6. According to the protective layer: Armoring, non-armoring.
NO.1, Jiangnan Cable possui tecnologia e equipamentos avançados de produção. Desde a fabricação dos condutores até o processamento do isolamento, blindagem e revestimento, cada etapa é precisa e rigorosa para garantir a alta qualidade dos cabos de média tensão.
NO.2, o controle de qualidade é extremamente rigoroso. A empresa estabeleceu um sistema de inspeção de qualidade perfeito, desde a seleção das matérias-primas até os produtos acabados que saem da fábrica, verificando em todos os níveis. Cada cabo de média tensão deve passar por uma série de testes rigorosos para garantir que os produtos atendam ou até excedam os padrões nacionais.
NO.3, Jiangnan Cable investiu pesadamente em pesquisa e desenvolvimento. De acordo com a demanda do mercado e as necessidades especiais dos clientes, podemos desenvolver cabos de média tensão com características diferenciadas, como melhor resistência ambiental e melhor capacidade de transporte de corrente. Além disso, a rica linha de produtos pode atender às diferentes necessidades de vários projetos complexos e fornecer aos clientes soluções completas de cabos.
Nossos casos
O que nós terminamos
| Personalizado | Especificações do cabo | Material de isolamento | Construção de Escudo | Material da bainha | Estrutura da Armadura | Desempenho Especial | Comprimento | ||||||||
| Seção transversal do condutor | Número de núcleos | tipo de material | Espessura do Isolamento | Tipo de blindagem | Número de camadas de blindagem | Seleção de material | Identificação de cores | Tipo de armadura | Camadas de Armadura | Resistência ao fogo | Desempenho à prova d'água | Desempenho retardador de chama | Resistência ao frio | Exemplo de medidores de solicitação de personalização | |
& Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | & Radic; | ||
BLV: Aluminium core PVC insulated wire
YJLV: Aluminium core cross-linked polyethylene insulated PVC sheathed power cable
YJLV22: Aluminium core cross-linked polyethylene insulated steel belt armoured PVC sheathed power cable
VLV: Aluminium core PVC insulated PVC sheathed power cable
VLV22: Aluminium core PVC insulated steel belt armoured PVC sheathed power cable
1. Oxidation and corrosion resistance.
Aluminium reacts quickly with oxygen in the air to form an oxide film, which can prevent further oxidation. Therefore, aluminium conductor is a necessary material for high voltage, large cross-section and large span overhead power transmission. Although aluminium-core cables are relatively cheap, copper-core cables have outstanding advantages in cable power supply, especially in the field of underground cable power supply.
Aluminium-core cables weigh 40% of copper-core cables, with low construction and transport costs.
The specific gravity of copper is 3.3 times that of aluminium, so aluminium-core cables are much cheaper than copper-core cables, which are suitable for low-demand projects or temporary power supply.
Introduction to Aluminium Core Cables_Disadvantages & Performance
1. Less conductive than copper wire
Aluminium-core wires are less conductive than copper wires, resulting in the need to use thicker aluminium-core wires when building circuits in order to achieve the same transmission effect as copper wires. This, in turn, will lead to an increase in the size of the wire, the installation is more difficult, the installation cost will also increase.
2. Susceptible to external damage
Aluminium core wire flexibility is relatively poor, easy because of the role of external forces caused by deformation, damage to the wire, affecting its normal conductive effect. In outdoor use need to pay extra attention, because the aluminium core wire is hard, easy to break.
3. Easy to age
Compared with copper wire, aluminium core wire aging faster, so after a long time of use, aluminium core wire may become very fragile, very easy to break. When the aluminium core wire is aging, it needs to be replaced in time, otherwise there may be a short circuit, fire and other risks.
1. Electrical conductivity
In order to reduce the energy loss and voltage drop in the cable conductor, the conductor of the power cable is generally made of copper and aluminium with high conductivity. Under the premise of the same cross-sectional area of the conductor, the conductivity of copper-core power cables is higher than that of aluminium-core power cables.
2. Processing performance
Copper ductility is good, strong mechanical properties, so in the mono filament compression, even if the degree of deformation is very large, copper core power cable conductor will not break. However, the mechanical properties of aluminium is poor. When the conductor is stranded, if the compression coefficient is high, the conductor will appear burrs, broken wire, or even broken wire.
3. Economic performance
In the case of the same current-carrying capacity, the cross-sectional area of aluminium-core cables is about 1.5 times that of copper-core cables, and the corresponding cost of line protection and civil engineering costs will also increase. Therefore, as a permanent power distribution, taking into account the operational safety aspects, in the case of capital conditions allow, the more recommended use of copper-core power cables.
Cable laying operating conditions
Max. Operation tempertature of conductor - - - - - - - - - - 90 ℃
Ambient temperature in the Air - - - - - - - - - - 40 ℃
Soil Temperature - - - - - - - - - - 25 ℃
Soil thermal resitivity - - - - - - - - - - 1.0 ℃m/w
Buried depth - - - - - - - - - - 0.8m
Single-core cable is installed in parallel. Adjacent space is equivalent to the diameter of the cable.
Correction factors of current carrying for different soil temperature
|
Soil temperature |
15 | 20 | 25 | 30 | 35 | 40 | 45 |
|
Rating factor |
1.07 | 1.04 | 1.0 | 0.96 | 0.92 | 0.87 | 0.83 |
Correction factors of current carrying for different thermal resisivity
| Soil thermal resistance | 1.0 | 1.2 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 |
| Three cores | 1.0 | 0.943 | 0.877 | 0.792 | 0.736 | 0.675 | 0.641 |
| Single core | 1.0 | 0.934 | 0.850 | 0.748 | 0.692 | 0.635 | 0.598 |
Aluminium core cables in various industries
Aluminum alloy conductor XLPE insulated power cable
Application
1. Power transmission and distribution system: aluminium core cables are widely used in power transmission and distribution system, including urban power grids, rural power grids, industrial power grids and so on.
2. Building electrical systems: Aluminium core cables are also widely used in building electrical systems, including residential, commercial, industrial and other buildings.
3. Transportation system: Aluminium core cables are also widely used in transportation systems, including subways, highways, railways and so on.
4. New energy systems: with the development of new energy, aluminium core cables are also widely used in new energy systems, including wind power, solar energy and so on.