Equipment ground wire box antistatic ground wire should be connected, the resistance value should be less than 0.003 ohms. Grounding resistance is the resistance value of the grounding wire and the earth, shaking table is a direct measurement of this value, it is recommended that you find the grounding bus of the building, if it is a joint grounding body, it should be less than 1 ohm, in line with the requirements of anti-static.
Anti-static grounding resistance is required to be no greater than 100 ohms. Anti-static grounding resistance is to prevent static electricity on easy fuel oil, natural gas storage tanks and pipelines and other dangerous effects of grounding. Measures taken by the electronics industry to reduce electrostatic discharge damage, etc.. Grounding is used to eliminate static electricity on the conductor, but can not be used to eliminate static electricity on the insulator.