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What is the functions of wire and cables?

What is the functions of wire and cables?

2022-01-16
The functions of wires and cables 
The performance requirements of any product come from many aspects: first, the requirements for basic use functions, that is, the products are required to be sufficient within the predetermined service life, and strive to best meet the basic technical requirements required for use. The second is that the product should be able to adapt to the technical requirements put forward by the environment, use conditions and various conditions in the installation and laying process. That is to say, when the product is used in the above-mentioned situations, it should have the ability to resist various external factors to damage its basic functions as much as possible to ensure the normal operation of the product.
 
These are the same for wire and cable products, but because of its wide variety, a large number of varieties appear to meet different use environments and use conditions. Therefore, in general, the performance requirements of cable products involve a very wide range; in particular, there are many performance requirements (mainly due to the environment, use conditions, and installation and laying process) that most electromechanical products do not have, or do not There may be; this increases the variety and complexity of performance requirements in cable products.


Wire and cable is used to different occasions,the function is different. See below the main differences:
1. Mechanical function
Refers to tensile strength, elongation, bending, elasticity, softness, shock resistance, abrasion resistance and mechanical impact resistance.
2.Corrosion and weather resistance
Refers to galvanic corrosion resistance, biological and bacterial corrosion resistance, chemical resistance (oil, acid, alkali, chemical solvent, etc.) corrosion resistance, salt spray resistance, light resistance, cold resistance, mildew resistance and moisture resistance.
3. Thermal function
Refers to the temperature resistance grade of the product, the heating and heat dissipation characteristics of the wire and cable for power transmission at working temperature, the current carrying capacity, the short-circuit and overload capacity, the thermal deformation and thermal shock capacity of the material, the thermal expansion of the material, and the immersion or coating of the material. Drip function, etc.

4. Aging function
It refers to the ability of products and their constituent materials to maintain their original functions under the effects of mechanical stress, electrical stress, thermal stress and various other external factors, or under the effect of external climatic conditions.
5.Conductive performance :
Most products require excellent conductive performance, and a single product requires a certain resistance range.
Electrical insulation function:insulation resistance, dielectric coefficient, dielectric loss, electrical resistance characteristics, etc.
Transmission characteristics refers to high-frequency transmission characteristics, anti-interference characteristics, etc.
6. Other functions
Including the properties of some materials (such as hardness, creep of metal materials, compatibility of polymer materials) and some special application properties of goods (such as non-flammability, atomic radiation resistance, insect bite, delayed transmission, and energy damping, etc.).
The functional requirements of the products are mainly put forward from the aspects of the use of each detailed product, the conditions of use, and the coordination of supporting equipment. Among the various functional requirements of a commodity, there must be some primary ones, which have a decisive effect and should be strictly required. Some are subordinate. Sometimes certain elements are mutually restrictive. Therefore, it is necessary to conduct a comprehensive study and analysis and inductive thinking.










 

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