Why do solar cables have to be used in photovoltaic power plants?
Summary: Photovoltaic cables are often exposed to sunlight, and solar
Photovoltaic cables are often exposed to sunlight, and solar systems are often used in harsh environmental conditions, such as high temperature and ultraviolet radiation. In Europe, sunny days will result in a field temperature of up to 100 ° C for the solar system. At present, various materials we can use include PVC, rubber, TPE and high-quality cross-linking materials. Unfortunately, rubber cables with a rated temperature of 90 ° C and even PVC cables with a rated temperature of 70 ° C are often used outdoors. At present, the national golden sun project is launched frequently. Many contractors do not choose special cables for solar system in order to save costs, Instead, ordinary PVC cables are selected to replace photovoltaic cables. Obviously, this will greatly affect the service life of the system.
The characteristics of photovoltaic cable are determined by its special insulating material and sheath material for cable. We call it cross-linked PE. After irradiation by irradiation accelerator, the molecular structure of cable material will change, so as to provide its performance in all aspects. In fact, during installation and maintenance, the cable can be routed on the sharp edge of the roof structure, and the cable must withstand pressure, bending, tension, cross tensile load and strong impact. If the strength of the cable sheath is not enough, the cable insulation will be seriously damaged, which will affect the service life of the whole cable, or lead to problems such as short circuit, fire and personal injury.