Grounding wire clamp is an important part of the electrical system used to ensure the safety of electricity consumption and realize the normal operation of the circuit. The grounding wire clamp reliably connects the metal shell, frame, or other potentially charged parts of the electrical equipment to the ground through conductors to form a current discharge channel. In power systems, industrial equipment, civil electrical appliances and other scenarios, grounding wire clamp has the functions of preventing electric shock, lightning strikes, and stabilizing voltage. It is one of the core links of the electrical safety system.
The grounding wire clamp is not a single structure, but a system composed of multiple parts, including the grounding body and the grounding wire clamp. The grounding body is a metal conductor in direct contact with the earth. It usually adopts corrosion-resistant materials such as galvanized steel pipe, angle steel, and flat steel to achieve a conductive connection with the earth through deep underground burial. Grounding wire clamp is a conductor connecting electrical equipment to the grounding body. It usually uses copper, aluminum or copper-aluminum composite cables. It needs to have sufficient conductive cross-sectional area to allow the current to pass smoothly.
According to different application scenarios, preformed grounding wire can be divided into three categories: protective grounding wire, working grounding wire, and lightning protection grounding wire. The protective grounding wire is mainly used to prevent the human body from being electrocuted when electrical equipment leaks. For example, the longest pin in the three-pin plug of household appliances is connected to the protective grounding wire. When the equipment shell is charged, the current can flow directly into the ground through the preformed grounding wire to avoid electric shock accidents when the human body is in contact. The working grounding wire is a grounding set up to allow the normal operation of the electrical system. For example, the neutral point grounding in the power system can stabilize the system voltage and suppress overvoltage. Lightning protection grounding wires are used to introduce powerful electric currents generated by lightning into the earth to protect buildings and equipment from lightning damage. They are commonly used in the connection lines of lightning rods, lightning protection belts and grounding bodies.
In the electrical safety system, the preformed grounding wire is the lifeline to ensure personal safety and is of great importance. According to statistics, about 80% of electric shock accidents can be prevented by reliable protective grounding. At the same time, the preformed grounding wire is also a safety valve to maintain the stable operation of the electrical system. The working grounding can effectively suppress overvoltage and harmonic in the system and reduce the probability of equipment failure.For lightning protection grounding wires, hundreds of thousands of amperes of current generated instantly by lightning strikes can be safely introduced into the earth to prevent buildings from being penetrated or equipment from being burned down. In industrial production, preformed grounding wire can also reduce the interference of static electricity on precision equipment and ensure production accuracy and product quality.
In short, preformed grounding wire is the most indispensable safety and security facility in the electrical system. Through scientific structural design and reliable connection methods, preformed grounding wire provides a safe discharge channel for current, which plays an important role in protecting personal safety, maintaining system stability, and preventing disasters and accidents.