Lightning protection and earthing device because it is concealed work. tracking of its detection into the construction phase detection and in-use phase of testing on a regular basis. construction phase detection detection of grounding material specifications, layout, depth, quality, anti-corrosion measures and the grounding resistance, and so on.

 

Grounded in the body due to a land which needs a stable for decades, difficult to maintain construction and material specifications is very important. Must use galvanized steel are of good quality (hot zinc plating) steel, galvanized iron, galvanized steel, galvanized flat steel to ensure the wall thickness. Artificial lightning grounding arrangements taking into account the current amplitude and over collection of power-frequency current of parallel electrode effects, which should not be too close to the space vertical grounding, otherwise even if measurement of grounding resistance meets the requirements, bulk flow in effect may not be very good. Distance between vertical grounding for twice times the length of vertical grounding. at least 1.5 times.