gui chao cable news: the difference between photovoltaic cable and ordinary cable
from:guichao author:admin click: 287 addtime:2017-03-12 10:28:32
photovoltaic cables are often exposed to sunlight and solar systems are often used in harsh environments,
such as high temperature and ultraviolet radiation in europe, sunny day will lead to the temperature of the solar system as high as 100 degrees c.
at present, we can use a variety of materials are pvc, rubber, tpe and high quality cross linked materials,
unfortunately, the rated temperature of 90 degrees c rubber cable, as well as even the rated temperature of 70 degrees c pvc cables are often used outdoors,
at present, the national golden sun project frequently launched, there are many contractors in order to save costs, not to choose special cable solar system,
instead of choosing an ordinary pvc cable to replace the photovoltaic cable, obviously, this will greatly affect the life of the system
the characteristics of photovoltaic cable is determined by its special cable insulation and sheath material, we call it pe,
after irradiation, the molecular structure of the cable material will be changed, thus providing the performance of the cable.
anti mechanical load
in fact, during installation and maintenance, the cable can be located on the sharp edges of the roof structure,
at the same time, the cable must bear the pressure, bending, tension, cross tensile load and strong impact
if the strength of the cable sheath is not enough, the insulation layer of the cable will be seriously damaged, thus affecting the service life of the whole cable,
or cause problems such as short circuit, fire and personnel injury
cross linking materials have high mechanical strength, and the cross linking process changes the chemical structure of the polymer,
meltable thermoplastic elastomer material for conversion of fusible non radiation cross link can significantly improve the thermal properties of the cable insulation material mechanical properties and chemical properties.