1、Will the shadows of houses, leaves and even bird droppings on photovoltaic modules affect the power system?

Answer: the covered photovoltaic cells will be used as a load consumption, the energy produced by other uncovered cells, when the covered cells will heat, easy to form a hot spot effect. Thus reduce the photovoltaic system power generation, or even burn down the photovoltaic components.

2、Will the modules work on rainy or foggy days? Any chance of a power outage or a blackout?

Answer: the solar irradiance is low on rainy or hazy days, but photovoltaic modules still generate electricity in low light. As long as the photovoltaic module's working state reaches the start-up condition of the inverter, the photovoltaic power generation system will work normally. When the distributed grid-connected PV system is not working, the load is automatically supplied by the power grid, and there is no power shortage and power outage.

3、Is there a power shortage in the winter when it's cold?

Answer: The factors that directly affect the amount of electricity generated are the radiation intensity, the length of the day and the operating temperature of the PV module, which will be weaker in winter and shorter in the day, resulting in a reduction in the amount of electricity generated compared with the summer. But distributed photovoltaic power systems will be connected to the grid, as long as the grid has power, household load will not appear power shortage and power outages.

4、Do you need to disconnect the photovoltaic system in a thunderstorm?

Answer: Distributed photovoltaic systems are equipped with lightning protection, so do not have to be disconnected. In order to ensure safety, it is suggested to disconnect the circuit breaker switch of the bus box and cut off the circuit connection with the PV module, so as to avoid the harm caused by direct lightning that the lightning protection module can not remove. The operation and maintenance personnel should check the performance of the Lightning Protection Module in time to avoid the harm caused by the failure of the Lightning Protection Module.

5、Lightning protection of home system only need components of the frame grounding lightning protection?

Answer: Dc-side component frame ground, add DC surge protector in the case of higher installation, in addition, the AC side is also necessary to add AC surge protector.

6、How to clean PV modules?

Answer: Rain water can be cleaned without special maintenance. If you encounter adhesive dirt, you can use a soft cloth plus water for a simple wipe. It is suggested to use soft brush, clean and mild water when cleaning the glass surface of PV module, and use less force to avoid damaging the glass surface.

7、Is there a risk of electric shock when you wipe with water?

Answer: There is no danger of wiping with water. Photovoltaic systems and components are insulated and grounded. However, in order to avoid the electric shock damage and possible damage caused by cleaning the components in high temperature and strong light, it is recommended to clean the components in the morning or late afternoon.

8、Do you need to clean the PV module after snow? How?

Answer: Manual cleaning is required when heavy snow accumulates on the component after snow. You can use soft objects to push snow down, be careful not to scratch the glass.

9、Can you step on a component to clean it up?

Answer: Component is a certain load-bearing, but can not step on the above component cleaning, will cause component cracks damage, affect the power generation and service life of components.