This cables are electrical conductors designed to carry electrical current at relatively low voltage levels, usually up to 1 kV. These cables are widely used in various applications, such as power distribution in residential, commercial, and industrial buildings, as well as in lighting systems, security systems, and communications.
The construction of low voltage cables consists of several key components. Firstly, we have the conductors, which are typically made of copper or aluminum due to their excellent conducting properties. The size and number of conductors vary depending on the application and the electrical load to be carried.
To protect the conductors and prevent short circuits, a dielectric insulation is used. The most common insulations are PVC (polyvinyl chloride) and XLPE (cross-linked polyethylene). These materials provide electrical insulation and also offer resistance to moisture, chemicals, and mechanical damage.
In addition to insulation, the cables may have one or more layers of shielding. Shielding is used to protect the cables against electromagnetic interference and prevent interference with other nearby systems. Common types of shielding include metallic shielding, such as metallic tapes or meshes, and semiconductive shielding.
Choosing the right low voltage cable depends on several factors, such as the required electrical load, transmission distance, installation environment, and local regulations. It is important to consider current capacity, voltage drop, mechanical resistance, and resistance to moisture and other environmental factors.
Furthermore, it is crucial to follow the specific electrical standards and regulations of each country or region when selecting, installing, and maintaining cables. These standards ensure the safety and proper performance of electrical installations.
In summary, they are electrical conductors used to carry current at relatively low voltage levels. These cables consist of copper or aluminum conductors, dielectric insulation, and, in some cases, shielding layers. Proper selection and compliance with safety standards are essential to ensure a safe and reliable electrical installation.