Why must be grounded for anti-static
Anti-static grounding is one of the basic technical measures to ensure electrical safety, equipment, facility and personnel safety*. In the process of implementing and installing electrical control systems in electronics, chemical, petrochemical and other enterprises, grounding is the main method to suppress interference and make the system work reliably. If the grounding and shielding can be properly combined in the design, construction and installation, most of the interference from the industrial site can be suppressed, and it is also helpful to improve the reliability of the control system operation and protect the safety of personnel, and protect the facilities and equipment from unintentional contact. To a live conductor.
Static electricity description: Static electricity is mainly generated by the friction of different substances, and it is widely present in nature, industrial production and people's daily life. In the electronics industry, the design of electronic products is miniaturized and highly integrated, and the corresponding processing technology is increasing. Micro, fine, precise, and thin, making the hazards of static electricity can not be ignored, in the production process of electronic workshops, the hazards caused by static electricity are many aspects. First of all, many electronic products, electronic equipment and instruments are sensitive to static electricity. (Many electronic products require static voltage to be lower than 50 volts!) Static electricity can cause potential failure and scrapping of sensitive electronic products, and affect their normal operation. Electronic equipment and instruments have errors. Until there is an operation failure; secondly, people will cause various accidents in the static environment for a long time; in addition, when the static electricity is serious, it may cause spark discharge, and serious fire accidents. In order to eliminate the harm caused by static electricity, measures must be taken. There are many ways to eliminate static electricity, but the simplest and most effective way is to take grounding measures. In the electronic production plant, all equipment that generates static electricity should be reliably grounded. In order to prevent the static charge accumulated on the equipment and people from reaching dangerous potential, anti-static floor is used in the main production site. In the protective material of this kind of floor, there are distributed copper wires or copper foil to form a network, and these metal networks form an electrical path with each other, which is used for static electricity conduction on the anti-static floor. As an electrical design coordination, appropriate grounding terminals should be reserved on the building columns or walls in the space where the anti-static floor is located. After the floor is laid, connect the metal wire or copper foil in the anti-static floor to the ground terminal. In addition, the grounding terminal must be connected to the antistatic grounding grid (ie, the grounding pole) through the antistatic main line, so that static electricity flows through the grounding terminal along the antistatic main line and the grounding pole connected to the earth (ie, the antistatic grounding grid or antistatic Grounding works).