The fuel used by the domestic diesel generator set is mainly light diesel, its lightning is generally not less than 65 ° C, higher than the ambient atmospheric temperature, diesel is a flammable liquid that may cause fire danger, and the power station with diesel should belong to the H-1 fire danger place. According to the national standards, H-1 fire hazard places should belong to the third category of industrial buildings and structures that need lightning protection, so the main plant and auxiliary buildings of diesel power stations in the ground building, including smoke exhaust and water supply buildings, should take lightning protection measures and carry out lightning protection design. To prevent direct lightning strikes, lightning rods or lightning belts should be installed in the parts of buildings and structures that are vulnerable to lightning strikes. When the lightning protection belt is used, the distance between any point of the roof and the lightning protection belt should not be greater than 10cm, the impact grounding resistance of the anti-direct lightning ground device should not be greater than 3, and it should be connected with the grounding device of the electrical equipment and the buried metal pipeline. The grounding device should form a ring grounding body around the building. The lead line of the lightning protection device should not be less than two, and the distance between them should not be greater than 30m. In order to prevent lightning waves from invading buildings along the low voltage overhead line, the iron leg of the insulator should be connected to the grounding device of the lightning protection and electrical equipment at the entrance. The overhead metal pipeline entering the power station shall be connected with the above ground device at the entry point.
Lightning protection and anti-static grounding of the fuel system: the steel oil storage tank must be equipped with lightning protection grounding devices, and the closed ring grounding body should be buried around the tank body. The ground point should not be less than two, and the ground point should not be greater than 30m along the oil tank. When the top of the tank is equipped with lightning rod or the tank is used as a flash adapter, the connection resistance should not exceed 10; When the oil tank is only grounded to prevent induction lightning, the grounding resistance should not be greater than 30. When the thickness of the preplate is greater than or equal to 4mm, the lightning rod is not installed. When the temperature, liquid level and other measuring devices on the top of the steel oil tank should be installed cable or steel pipe wiring, cable sheath or steel pipe wiring and the tank body should be electrically connected.
An anti-static and anti-inductive lightning grounding device shall be installed at the beginning, end, branch and 200-300m of the oil pipeline laid on the ground or in the pipeline trench. The ground resistance should not be greater than 30, and the ground point should be set to a fixed pipe pier.
For more questions about the generator set, please call the Beidou Power team. More than ten years of professional production and sales of power generation equipment experience, more professional engineer team to serve you, choose Beidou power is to choose rest assured, welcome on-site factory inspection.
Post time: Mar-10-2025