Photovoltaic cables are often exposed to sunlight, and solar systems are often used under harsh environmental conditions, such as high temperature and ultraviolet radiation. In Europe, sunny days will cause the field temperature of the solar system to reach as high as 100 degree . At present, the various materials we can use are PVC, rubber, TPE and high-quality cross-linking materials, but unfortunately, rubber cables with a rated temperature of 90 degree , and even PVC cables with a rated temperature of 70 degree It is also often used outdoors. At present, the National Golden Sun Project is frequently launched. In order to save costs, many contractors do not choose special cables for solar systems, but choose ordinary pvc cables to replace photovoltaic cables. Obviously, this will greatly affect the use of the system. life.
The characteristics of photovoltaic cables are determined by their special insulating materials and sheath materials for cables, which we call cross-linked PE. After being irradiated by an irradiation accelerator, the molecular structure of the cable material will change, thereby providing all aspects of its performance.
1. Photovoltaic cable:
Conductor: copper conductor or tinned copper conductor
Insulation: radiation cross-linked polyolefin insulation
Sheath: Irradiation cross-linked polyolefin insulation
2. Ordinary cable:
Conductor: copper conductor or tinned copper conductor
Insulation: PVC or XLPE insulation
Sheath: PVC sheath
3. Ordinary cable It can be seen from the above that the conductor used is the same as the photovoltaic cable.
4. It can be seen from the above that the insulation and sheath of ordinary cables are different from photovoltaic cables.
5. Ordinary cables are only suitable for laying in ordinary environments, while photovoltaic cables can be used for laying in harsh environments.
