Wire and cable selection tips

Update:27 Feb 2018
Summary:

Electrical properties Conductive properties --- Most pr […]

Electrical properties
Conductive properties --- Most products require good electrical conductivity, individual products require a certain range of resistance.
Electrical Insulation --- Insulation resistance, dielectric coefficient, dielectric loss, electrical resistance and so on.
Transmission characteristics --- refers to the high-frequency transmission characteristics, anti-interference characteristics.
2 mechanical properties
Refers to the tensile strength, elongation, flexibility, flexibility, resistance to vibration, abrasion resistance and resistance to mechanical impact and so on.
3 thermal performance
Refers to the product temperature rating, operating temperature Power transmission wire and cable heating and cooling characteristics, current carrying capacity, short circuit and overload capacity, thermal deformation and thermal shock resistance of synthetic materials, thermal expansion of materials and impregnated or coated materials Dripping performance and so on.
4. Corrosion and weather resistance
Refers to the resistance to corrosion, resistance to biological and bacterial erosion, chemical resistance (oil, acid, alkali, chemical solvents, etc.) erosion, salt spray, light, cold, mildew and moisture resistance.
5 aging performance
Refers to the mechanical stress, electrical stress, thermal stress and other various external factors, or under the influence of external climate conditions, the product and its constituent materials to maintain its original ability.
6. Other properties
Including the characteristics of some materials (such as hardness, creep of metallic materials, compatibility of polymeric materials), and certain special characteristics of the product (such as non-flammability, resistance to atomic radiation, pest control, delayed transmission, and Energy damping, etc.).
Product performance requirements, mainly from the specific product uses, conditions of use, as well as supporting the relationship with the equipment and so on. Among the various performance requirements of a product, there are bound to be some major ones that play a decisive role and should be strictly required. Some are subordinate. Sometimes, some factors are mutually restrictive. Therefore, it must be comprehensively studied and analyzed comprehensively.