wire and cableAs the main medium for power transmission, it usually has the following common characteristics:

1. Electrical performance

Conductivity: resistance of conductive wire core (DC resistance of wire), current carrying capacity.

Electrical insulation performance: insulation resistance, voltage resistance characteristics, etc.

2. Corrosion and weather resistance performance

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

3. Thermal performance

Refers to the heat resistance level, working temperature, heating and heat dissipation characteristics of cables, current carrying short circuit and overload capacity, thermal deformation and thermal shock resistance of synthetic materials, thermal expansion of materials, and dripping performance of impregnated or coated materials of the product.

4. Aging performance

The ability of a product and its constituent materials to maintain their original properties under the action of mechanical (mechanical) stress, electrical stress, thermal stress, and other external factors, or under external climatic conditions.

5. Mechanical properties

Refers to tensile strength, elongation, bending, elasticity, flexibility, vibration resistance, wear resistance, and impact resistance.

6. Other performance

This includes the characteristics of materials (such as hardness and creep of metal materials, compatibility of polymer materials) as well as certain special usage characteristics of the product (such as flame retardancy).