Huacheng Cable ‖ How much do you know about the performance of the wire and cable?

Wire and cable products are used in different occasions, resulting in a wide range of product performance requirements. From an overall point of view, its main performance can be summarized as:

1. Electrical performance

Conductivity---Most products need to have good conductivity, and individual products require a certain resistance range.

Electrical insulation performance---insulation resistance, dielectric coefficient, dielectric loss, electrical resistance characteristics, etc.

Transmission characteristics---refers to high-frequency transmission characteristics, anti-interference characteristics, etc.

2. Mechanical properties

Refers to tensile strength, elongation, bendability, elasticity, flexibility, vibration resistance, abrasion resistance and mechanical impact resistance.

3. Thermal performance

Refers to the product's temperature resistance grade, working temperature, heating and heat dissipation characteristics of wires and cables for power transmission, current carrying capacity, short circuit and overload capacity, thermal deformation and thermal shock resistance of constituent materials, thermal expansion of materials, and impregnation or coating materials The dripping performance and so on.

4. Corrosion and weather resistance

Refers to electrochemical corrosion resistance, biological and bacterial corrosion resistance, chemical resistance (oil, acid, alkali, chemical solvents, etc.) corrosion resistance, salt spray resistance, light resistance, cold resistance, mildew resistance and moisture resistance.

5. Aging performance

Refers to the ability of a product and its constituent materials to maintain their original performance under the influence of mechanical stress, electrical stress, thermal stress, and various other external factors, or under the action of external climatic conditions.

6. Other properties

Including the characteristics of certain materials (such as the hardness, creep, and compatibility of polymer materials) and some special application characteristics of the product (such as non-flammability, atomic radiation resistance, insect bite resistance, delayed transmission, And energy damping, etc.).

The performance requirements of the products are primarily considered from the specific use of each product, the conditions of use, and the coordination and connection of the supporting or equipment. Among the various performance requirements of a product, there must be some characteristics that are the most important and decisive, and should be strictly required; some are subordinate, and sometimes some elements are mutually restricted. Therefore, it is necessary to comprehensively and specifically consider the needs of product characteristics.