The approaches of construction and measurement of resistance reducing powder

I.   The general design of grounding body

   The general design of grounding body should be made according to concrete conditions, such as terrain, soil and so on.

   These approaches are provided for reference:

1.       vertical way

As the picture 1-4, there are “一” style, “十” style, and “丰” style.  It is especially noted that the distance between every grounding body should not be less than 5 meters, or it will decrease the function. By this way the resistance reducing powder should be filled around the grounding body as picture 9. This way is applied to the narrow place which can be dug deep or drilled with mechanical tools.

2.       horizontal way

As picture 5-8, there are  “一” style, “十” style, and “丰” style. The grounding modules are only laid horizontally and the resistance reducing powder is filled in as picture 10. This way is comparatively less effective. However, if the place is wide, it is not convenient to dig deep and there is no mechanical tools to drill, this way will have to be used. And the grounding body should be laid as long as possible.

3.       mixed way

As picture 1-4, the horizontal connecting line should be laid as deep as possible to be grounding body and resistance reducing powder should be filled around. The resistance reducing powder is certainly filled around the vertical grounding bodies. This way is applied narrow places which is not convenient to dig deep and has bad conditions. The ditches of vertical grounding or horizontal grounding can be a little shallow than the set figure.

     Finally, the above ways are suitable for general projects. To some large and high technological projects it is necessary to apply large grounding net or even form a grounding net with expensive metals.  

II. Horizontal way 

III. The way of using the material   

IV. Measurement