The general service life of cables from Yunnan cable manufacturers is 20 years. Some people may say that life is more than 20 years, or even longer. Yes, there are indeed cables with a lifespan of more than 20 years. From a safety point of view, the design life is the longer life of the cable.

Factors affecting the cable life of Yunnan cable manufacturers:

1. External damage: In the past ten years, the economy has developed rapidly, and all parts of the country have developed too fast. Life and traffic are more obvious, especially in today's high-speed economic development today. Although cables are known to be damaged by external influences, many cable failures are caused by mechanical damage.

2. Insulation damping: In general, most cables are buried underground or in underground drains. In many cases, unqualified cable joints will be performed under wet weather conditions, which will cause water or steam to enter the joint. After a long time, water branches will be formed under the action of the electric field, which will gradually destroy the insulation strength of the cable and cause failure.

3. Chemical corrosion: cable buried in the ground. When selecting the type of buried cable, the normal service time of the corrosion-resistant cable is usually specified according to the corrosion capacity. If the anti-corrosion cable is not buried in the ground, it will be affected by microorganisms in the soil.

Long-term load operation: the cable is heated, the insulation is reduced, it is also easy to age, and the line is short-circuited. The high temperature of long-term overload operation will accelerate the aging of insulation. Especially in the hot summer, the temperature rise of the cable will cause the breakdown of the weak part of the cable insulation, and the cable failure is particularly frequent in summer.

Abnormal cable connector: cable connector is the weak link of cable line, and cable connector failure caused by human error often occurs. In the process of making cable joints, the construction personnel are not tightly crimped and the joints are not heated enough, which will cause the insulation of the cable head to decrease and cause accidents.

Environment and temperature: The external environment and heat source of the cable can also cause excessive cable temperature, insulation breakdown, serious explosion and fire.

7. Cable aging causes and natural disasters: Each cable will be explained, and the service life of the general cable will be explained. If the time is longer than the time in the manual, the cable will gradually fail; in addition to man-made reasons, there are natural environmental factors, such as mountain collapse, debris flow, fire, etc.

Yunnan cable manufacturers of flame retardant cable, halogen-free cable and fire-resistant cable features:

1. Power cable

Flame retardant cable (ZA, ZB, ZC): effectively delay the spread of flame and prevent the expansion of fire. Due to its low cost, it is widely used in fireproof cables. Whether it is a single cable or a bundle of cables, when the cable burns, the spread of the flame can be controlled within a certain range, so as to avoid major disasters caused by fire and improve the fire safety of the cable line.

2. Power cable

Halogen-free cable (wdz): Low-smoke halogen-free cable does not contain halogen materials, has low combustion corrosion and toxicity, produces a small amount of smoke, reduces damage to personnel, instruments and equipment, and is conducive to timely fire rescue. Although it has good flame retardancy, corrosion resistance, low smoke concentration, etc., its mechanical and electrical properties are slightly lower than ordinary cables.

3. Power cable

Fire-resistant cable (n,NH): Its function is to maintain normal operation within a certain period of time and maintain the integrity of the line. Fire-resistant cables produce less acid gas smoke when burning, and their fire resistance and flame retardancy are greatly improved. Especially during the combustion process, the cable can still maintain the complete operation of the line, accompanied by water spray and mechanical impact.