2防雷接地--装配小常识--埋设位置+工程量计算(国外英文资料).docVIP

2防雷接地--安装小常识--埋设位置+工程量计算(国外英文资料) The lightning grounding leads to the ground Grounding depth should meet the design requirement. When not required, it should not be less than 0.6 m. The earth body of Angle and steel pipe should be configured vertically. In addition to grounding, the vertical part of the grounding line and the welding part of the grounding device should be treated with corrosion. Before being embalmed, the surface must be removed and removed from the soldering flux. The spacing of the vertical grounding should not be less than three to five times its length. The spacing of the horizontal ground body should meet the design requirement. Not less than 5m when no design is required. In addition to the circular grounding, the grounding position should be outside of the building 3m. Away from the building entrances or sidewalks (road) also should be more than 3 m, such as less than 3 m, the pressure should be used with approach or above the grounding device laying 50 a 90 mm thickness of asphalt layer, its width should be more than 2 m grounding device; When the ground is laid out, the ground shall not be filled with rocks and construction waste. The soil outside must not be corrosively corrosive; The soil should be rammed and packed in the backfill. When the ground engineering unit is composed of multiple ground parts, it shall be designed to separate the disconnecting card. Natural ground body and artificial ground body connection should be easy to separate disconnecting card, the break card should protect the measure. First, the installation of the flash unit is calculated The lightning rods are installed on the flat roof, on the wall, in the structure, on the chimney and in the metal containers. (1) units of quotas are installed on the roof, on the wall, and in the chimney, where the lightning rods are mounted with roots or groups. The independent lightning rod installation is measured by basis, the length, height and quantity are designed according t