Research on impact characteristics of a new graphite composite earthing device

Abstract

Abstract For the new type of graphite composite grounding material, there is a lack of generally accepted rules and standards. In this paper, the impact properties of a new type of graphite composite earthing material are studied. The test results show that the new type of composite grounding device always has spark discharge effect. With the increase of impulse current amplitude, the value of impulse coefficient decreases, and the rate of decrease decreases. Increasing the amplitude of the shock current may only increase the electric field strength in the region, but not increase the spark discharge range in the soil, so the shock coefficient tends to be flat. The test results can provide guidance for the selection and application of new grounding materials.