cable news: causes of fire accidents in high flexible cables
from：guichao author：admin click： 379 addtime：2017-03-16 10:41:15
high flexible cable is now used more and more widely,
but with its popularity in the country's power lines,
some of its security problems have gradually attracted people's attention,
especially in recent years, the occurrence of cable fire accidents is to remind people to pay attention when using this kind of cable.
so, what are the reasons for the quality of the fire accident caused by the high flexible cable?!
1, the conductor of the cable core nominal cross section does not meet the requirements.
the nominal interface is generally greater than the actual production of the cable,
the nominal value of the cable will have a larger unit current density,
in the course of its work, it is easy to cause the fire accident.
2, cable production process is poor.
the so-called no evil is not business, although not every manufacturer,
but the market will inevitably have some businesses in order to seek personal gain,
in the production process of the cable is not strictly in accordance with the standard operation.
even some businesses will use some shoddy shoddy,
lead to the final production of the cable because of the quality of the process in the use of fire.
3, the material of the cable is impure or unqualified.
the core of the cable is usually made of copper or aluminum,
and many businesses in the production process will often use unqualified or not enough purity material,
this can lead to a reduction in power due to the presence of more impurities.
therefore, the material used as the core line must be a number of high-quality electrolyte materials, mainly copper and aluminum.
4, insulation ingredients do not meet the requirements or poor processing.
we know that the outer part of the cable is usually wrapped in an insulating material,
if the quality of the insulation material is not qualified, it will be used in the process of reducing its own pressure resistance,
and the formation of unqualified resistance value.
in addition, the long-term use will shorten its service life, it is prone to some short circuit failure caused by fire.
5, improper transportation.
most of the cables are subjected to strict quality inspection before they leave the factory,
however, in the process of transportation, it has been damaged because there is no proper protection,
the insulation layer is damaged or the inner core is broken.