Although lightning is a natural disaster, in general, as long as the following three aspects are strictly implemented, the probability of lightning strike risk can be minimized.

      1. Lightning connects the newly added metal support of the photovoltaic support to the original lightning protection belt at multiple points to form a good electrical path, and the lightning energy of direct lightning is quickly discharged through the grounding of the original lightning protection belt. Put it on the ground to protect the building and photovoltaic modules exposed on the roof.

      2. The grounding device is the basis of lightning protection. If the original building has lightning protection belts, lightning rods and other facilities, you need to use a grounding resistance tester to measure the grounding resistance value. Generally speaking, the grounding resistance value is less than 4 ohms. Use the original ground.

      However, some facilities, such as rural houses, livestock sheds, breeding farms, etc., do not have strict requirements for lightning protection, and new grounding devices need to be added. The grounding device can be constructed with copper-clad steel grounding body, carbon crystal grounding electrode, resistance reducing agent and other grounding materials according to different geological conditions. After completion, the grounding resistance value measured less than 4 ohms is qualified.

      3. Equipotential connection measures Equipotential measures include roof bracket bridge, bracket and roof metal structure connection, such as the bridge frame for laying photovoltaic cables, inverter housing, factory ventilation pipes, air conditioner outdoor units, cooling towers, and ladders. And other devices.

      Especially the grounding and equipotential connection of photovoltaic power generation equipment is the top priority. In the place where the combiner box and inverter are installed, an equipotential grounding terminal box is added to connect the combiner box, inverter, and controller to the ground. The terminals are respectively reliably connected with the equipotential grounding terminal box with a two-color grounding wire larger than 16 square meters, and the terminal box is connected with the original or new grounding device with flat steel or a wire larger than 50 square meters.