Conductivity—Most products require good conductivity, and individual products require a certain resistance range.
Electrical insulation performance—insulation resistance, permittivity, dielectric loss, electrical resistance characteristics, etc.
Transmission characteristics—refers to high-frequency transmission characteristics, anti-interference characteristics, etc.
refers to the ability of a product and its constituent materials to maintain their original performance under the action of mechanical stress, electrical stress, thermal stress, and various other external factors, or under external climatic conditions.
Refers to the temperature resistance grade of the product, the heating and heat dissipation characteristics of the power transmission cable at the working temperature, the current carrying capacity, the short circuit and overload capacity, the thermal deformation and thermal shock resistance of synthetic materials, the thermal expansion of the material, and the dripping of the impregnating or coating material. Drop performance, etc.
Corrosion and weather resistance
refers to resistance to galvanic corrosion, biological and bacterial corrosion, chemical resistance (oil, acid, alkali, chemical solvent, etc.) corrosion, salt spray resistance, light resistance, cold resistance, mildew resistance and moisture resistance.
refers to tensile strength, elongation, bendability, elasticity, flexibility, vibration resistance, abrasion resistance and mechanical impact resistance.
Including the characteristics of some materials (such as the hardness and creep of metal materials, the compatibility of polymer materials) and some special use characteristics of the product (such as non-flammability, resistance to atomic radiation, insect bite resistance, delayed transmission, and Energy damping, etc.).
The performance requirements of cables are mainly put forward from the aspects of the purpose of each category of cables, the conditions of use, and the cooperation relationship of supporting equipment. Among the various performance requirements of a product, some of them must be the main ones, which play a decisive role and should be strictly required. Some are subordinate. Sometimes certain factors restrict each other. Therefore, comprehensive research and analysis must be considered.
Post time: Dec-15-2020