Grounding Module

Introduction grounding module, also known as drop resistance module, lightning protection and grounding module is a non-metallic conductive material consisting mainly of grounding, which consists of electrical conductivity, chemical stability, good non-metallic materials, metal grounding body, electrolyte and hygroscopic agent. The main application areas: power plants, substations, switching stations, high-voltage transmission lines, railway electrification, telecommunications, mobile communications base stations, microwave base stations, satellite ground receiving stations, radar and other ground work, security, grounding and lightning protection and grounding; the Precise instruments, computer room equipment, telecommunications equipment programmed, radio and television equipment, electronic medical equipment and protective earth grounding; a variety of high-rise buildings and tall structures, landmarks of ancient buildings, the tall monument and other lightning protection and grounding; oil pipelines and gas cans, . Second, the principle of flammable and explosive material storage lightning protection and grounding module built galvanized steel ground (pipe, bar, angle), when it is connected with the protection of the earth, the effective contact area between the metal grounding body and the earth greatly increased by moisture resistance, the module bulk fluid layer with release of electrolytic ion soil structure, and because the ground module is highly moisturizing, moisture absorption and stable electrical conductivity, and therefore, the metal grounding contact resistance and the earth will be greatly reduced, thereby give full play to the reduction in resistance grounding module use. This module uses a chemically stable non-metallic conductor material as the conductive media modules, the conductivity is not seasonal; Can moisture absorption, to maintain effective contact with the soil, ground resistance is low; in high soil resistivity areas, can effectively reduce ground network grounding resistance; great resistance to the impact of current frequency and impact resistance stable; corrosion-resistant, non-toxic, long life, easy installation. Three construction method, grounding module can be buried vertically or horizontally buried, buried depth is generally 0.8 to 1.0 m. 2, when several modules in parallel embedded module spacing of not less than 4.0 meters. If conditions do not allow, can be appropriately reduced, and this at the same time should reduce the amount of the value module calculation module utilization factor. 3, when the pole core modules in parallel to each other or to ground and ground connections must be welded. He asked to use the same kind of metal welding materials, ensure the reliability of the connection. Weld length should be not less than 80mm, not allowed to Weld, and weld. 4, should clear the welding slag, coated with a layer of asphalt or anti-corrosion paint to prevent corrosion very core. 5, pit backfill should be used as filler fine-grained soil, backfill do not use the broken bricks and other construction waste, backfill should be stratified operation, after filling material 30 cm, adequate water and compacted. Re-packing, add water and compacted, and surface until flush. 6, moisture absorption after 72 hours, the land resistance measurement frequency grounding resistors. If you do not achieve the desired goal, we should analyze the causes and take remedial measures. 7. In cold areas, the module should be buried in the permafrost below. 8 Dosage Calculation Base Net soil soil resistivity, use the following formula to calculate the amount of ground modules: horizontal embedded, single module grounding resistance: Rj = 0.068 × [ρ ÷ (a × b) -2] after total grounding resistance in parallel: Rnj = Rj / nη Where: ρ- soil resistivity (Ω / m) a, b- long grounding module width (m); Rj- single module grounding resistance (Ω); Rnj- total ground resistance (Ω) ; n- grounding module number; η- module adjustment factor, and generally 0.6-0.9. 9 square ground transport packaging modules packaging boxes, each containing two inner packaging with foam pads to isolate the module and the module, the module with the tank wall, suitable for long-distance transport and handling with. Cylindrical grounding module packaging boxes, each box - block, use foam pad meter isolation module and the module, the module with the tank wall packaging. Note Storage Avoid high temperature, exposure. Transportation and installation, to avoid damage such as mechanical force or beat module. Northern cold areas, the module should be buried in the frozen soil layer below