Introduction to the use of cables and materials commonly used in solar photovoltaic power stations.

In addition to the main equipment, such as photovoltaic modules, inverters, and step-up transformers, during the construction of solar photovoltaic power stations, the supporting connected photovoltaic cable materials have the overall profitability, operational safety, and high efficiency of photovoltaic power plants. With a crucial role, New Energy in the following dimensions will give a detailed introduction to the use and environment of cables and materials commonly used in solar photovoltaic power plants.

According to the system of solar photovoltaic power station, cables can be divided into DC cables and AC cables.
1. DC cable
(1) Serial cables between components.
(2) Parallel cables between the strings and between the strings and the DC distribution box (combiner box).
(3) The cable between the DC distribution box and the inverter.
The above cables are all DC cables, which are laid outdoors and need to be protected from moisture, exposure to sunlight, cold, heat, and ultraviolet rays. In some special environments, they must also be protected from chemicals such as acids and alkalis.
2. AC cable
(1) The connecting cable from the inverter to the step-up transformer.
(2) The connecting cable from the step-up transformer to the power distribution device.
(3) The connecting cable from the power distribution device to the power grid or users.
This part of the cable is an AC load cable, and the indoor environment is laid more, which can be selected according to the general power cable selection requirements.
3. Photovoltaic special cable
A large number of DC cables in photovoltaic power plants need to be laid outdoors, and the environmental conditions are harsh. The cable materials should be determined according to the resistance to ultraviolet rays, ozone, severe temperature changes, and chemical erosion. Long-term use of ordinary material cables in this environment will cause the cable sheath to be fragile and may even decompose the cable insulation. These conditions will directly damage the cable system, and also increase the risk of cable short circuit. In the medium and long term, the possibility of fire or personal injury is also higher, which greatly affects the service life of the system.
4. Cable conductor material
In most cases, the DC cables used in photovoltaic power plants work outdoors for a long time. Due to the constraints of construction conditions, connectors are mostly used for cable connections. Cable conductor materials can be divided into copper core and aluminum core.
5. Cable insulation sheath material
During the installation, operation and maintenance of photovoltaic power plants, the cables may be routed in the soil below the ground, in the weeds and rocks, on the sharp edges of the roof structure, or exposed in the air. The cables may withstand various external forces. If the cable jacket is not strong enough, the cable insulation will be damaged, which will affect the service life of the entire cable, or cause problems such as short circuits, fire, and personal injury.