Installation Method of Anti-static Grounding Device
For good grounding, several large copper plates should be buried in the large pit outside the room, and then connected to the indoor area with copper busbars or copper mesh to achieve a good effect. (Other metals are also acceptable, but they are prone to corrosion.)
The grounding system of a computer room is an important means to prevent interference from parasitic capacitive coupling, protect equipment and personnel safety, and ensure the stable and reliable operation of the computer system.
The grounding system of an electronic computer is the simplest, most economical, and most effective method in anti-interference design. If grounding is properly combined with shielding, noise problems can be better solved.
Therefore, in order to ensure the safe, reliable, and stable operation of the computer system and the safety of equipment and personnel, appropriate grounding systems should be designed according to the different requirements of different types of computers.
According to the national standard "Computer Technical Requirements," the requirements for computer grounding systems are specifically stipulated. Computer stations generally have the following types of grounding:
DC ground for the computer system; resistance value not greater than 1Ω.
AC working ground; resistance value not greater than 4Ω.
Safety protection ground; resistance value not greater than 4Ω.
Anti-static grounding: Resistance value not exceeding 4Ω.
Lightning protection grounding: Resistance value not exceeding 10Ω.
Grounding refers to connecting a point in a circuit or a metal casing to the earth with a conductor. The goal is to facilitate the flow of grounding current; therefore, the lower the grounding resistance, the easier it is for the grounding current to flow. Furthermore, in computer systems, grounding should also minimize potential fluctuations that could cause noise. Therefore, the lower the grounding resistance, the better.