The effect of grounding effect on electrostatic protection
Today I will show you how to ground the ground when laying anti-static rubber.
Grounding provides a good discharge channel for electrostatic shock, so that the static charge accumulated on the charged body can be smoothly discharged and led to the ground quickly, avoiding the discharge of sensitive components. The quality of the grounding effect directly affects the effect of the entire electrostatic protection. If the grounding effect is poor, the entire anti-static system will fail. The product will be in a danger of being full of static electricity, only from the test discharge point to the final grounding junction. Keep all links unobstructed to ensure the safe discharge of static electricity.
As the most active factor in the ESD process, operators entering the EPA environment must wear anti-static clothing and wrist straps, and the workbench must be covered with anti-static table mats. Anti-static wrist straps may be called "discharge" static wrist straps more appropriately. The wrist strap and workbench pad provide a clear path for static electricity to reach the ground, making the wearer close to zero volts. For people with frequent activities, anti-static shoes, socks, heel and toe straps should be connected to the static dissipative floor to release static charges. If only from the perspective of "discharging" static electricity, the lower the resistance to ground of the human body, the better, but considering safety factors, the human body must have a certain resistance to ground. In case the metal equipment or device is short-circuited with the power frequency power supply, this The resistance can limit the current flowing through the operator's body, so usually a resistance of not less than 1M should be inserted in the connection between the wrist strap, toe strap and the ground wire.
The overall layout design of the anti-static grounding body should be determined according to the terrain, topography, soil quality, etc., and there is no certain rule, but should be designed according to specific conditions. The following methods are provided for reference. It is divided into vertical, horizontal and mixed layout.