Consider the quality and working condition of the blades to avoid blade damage. Commonly used blade lightning protection lead specifications are 20-14# copper wires, generally with an outer diameter of 6mm and a length of 2-3m. Both ends are connected to both ends of the blade, and the other end is connected to the neutral line or loop of the grounded safety system. Ground positioning contact. In addition, the lead may also be equipped with a lightning arrester to protect the blades to ensure the safe operation of the blades.
First of all, we have to follow the national standards.
For example, there are some specific situations in lightning protection projects. For example, some lightning protection requirements for power systems do not have national standards. At this time, they must be implemented in accordance with the power system industry standards. , and for example, wind power has no national or industry standards. At this time, we mainly refer to foreign standards, such as Germany and the United Kingdom, but their standards are also different. At this time, if wind power is regarded as a building, it is also based on the building However, it is necessary to understand that a system may have to refer to several standards to implement lightning protection grounding requirements. For example, wind power, meteorological lightning protection detection departments generally The ground resistance test of 4 ohms is sufficient. However, in terms of products, blades and turbines have relevant lightning protection requirements. There are electrical lightning protection grounding installation specifications. If you want to connect to the grid to generate electricity, you must use it as required. The power generation and substation facilities meet the lightning protection requirements of the power system. Since the production of this specification started relatively late, this so-called reference is a bit confusing.
Foreign ones may not necessarily be in line with China’s. China often likes to deal with specific matters in detail. Besides, if you use British standards or the different requirements of Germany, Denmark, Europe and the United States for lightning protection and grounding, the project costs will be different. The difference may be quite large.
Like some internationally accepted standards such as those implemented by the International Electrotechnical Organization, it is certainly right for companies to use these standards to regulate their production activities.