DC Photovoltaic SPD can effectively protect photovoltaic systems from lightning strikes and overvoltage damage within a certain range. It typically provides the following protection:
Lightning protection: DC Photovoltaic SPD can effectively protect photovoltaic systems from damage caused by lightning strikes through dissipation, suppression, and diversion. It can absorb and disperse large currents generated by lightning strikes, reducing the impact on photovoltaic modules, inverters and other key equipment, thereby extending their life.
Overvoltage Protection: DC Photovoltaic SPD also protects against potential damage to photovoltaic systems caused by overvoltage. When the system suffers from overvoltage, the lightning arrester can respond quickly and shunt the overvoltage to the ground, preventing the overvoltage from intruding into the photovoltaic system and protecting the normal operation of key equipment.
It should be noted that the effective protection range of DC Photovoltaic SPD is mainly affected by factors such as its technical parameters, installation location and system design. Normally, lightning arresters can provide effective protection on the DC side of the photovoltaic system, including the power lines and other DC cables between the photovoltaic modules and the inverter. However, for larger-scale photovoltaic systems, especially those requiring longer cable distances and multiple inverters, multiple lightning arresters or other lightning protection measures may need to be used depending on the actual situation to ensure comprehensive protection.
Therefore, when designing and installing photovoltaic systems, it is necessary to reasonably select the appropriate type and quantity of lightning arresters based on the actual situation and engineering needs, and follow relevant electrical installation standards and specifications to ensure effective protection of the photovoltaic system.
