Yanggu cable life reduction factors

Release time:

2020-07-27 15:05

The penetration rate of electricity in our country has been very high, and the production and manufacturing of all walks of life are inseparable from electricity.Yanggu CableThe service life directly affects the safety of production.Yanggu CableThe service life depends on the oxidation induction period of the sheath material. Generally speaking, the design and service life of Yanggu cable is 20 years, and the actual life is far greater than this value.




leadYanggu CableMain factors of insulation reduction
External force damage: from the operation analysis in recent years, especially in today's rapid economic development, a considerable number of Yanggu cable failures are now caused by mechanical damage.
Insulation damping: This situation is also very common, usually occurs in the direct buried or exhaust pipe of the Yanggu cable joint. For example, unqualified cable joints and joints made in humid climates will cause water or water vapor to enter the joint, and water branches will be formed for a long time under the action of the electric field, which will gradually destroy the insulation strength of the cable and cause failure.




Chemical corrosion: Yanggu cable is directly buried in the area with acid and alkali action, which often causes corrosion to the armor, lead skin or outer protective layer of the cable. The long-term chemical corrosion or electrolytic corrosion of the protective layer will lead to the failure of the protective layer, the reduction of insulation and the failure of the cable. Long-term overload operation: overload operation, due to the thermal effect of the current, when the load current through the Yanggu cable, the conductor will be heated, at the same time, the skin effect of the charge, steel armor eddy current loss and insulation media loss will also generate additional heat, thereby increasing the cable temperature.
Mineral insulated fireproof cable manufacturersTell you, in the long-term overload operation process, too high temperature will accelerate the insulation aging, and even the insulation will be broken down. Especially in the hot summer, the temperature rise of Yanggu cable often causes the weak insulation of the cable to break down first, so there are more failures of Yanggu cable in summer.Yanggu cable which is goodBe sure to make a field trip when choosing a cable.

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