Comprehensive Construction Plan For Lightning Protection And Grounding Of Various Industries

Lightning -proof grounding refers to the introduction of lightning current to the earth by installing and connecting specific devices and wires to avoid technical measures that damage electrical equipment and buildings caused by lightning and indirect lightning.The core purpose of lightning protection is to quickly spread lightning current into the earth through a good grounding system to reduce the damage of lightning strikes on buildings and internal electronic equipment.

The lightning protection grounding system consists of three main parts: leading down, grounding and ground.These parts are connected to each other to form a complete lightning protection system to ensure that the lightning current can be scattered quickly and safely to the earth.

The definition of downline, ground line and ground body

Lead down

The bottom line is the conductivity between the lightning rod (or lightning protection zone) and the grounding device.Its role is to guide the lightning current from the lightning rod (or lightning protection belt) to the grounding system.The bottom line is generally used in metal conductors (such as galvanized steel, copper wire, etc.). Its selection should have sufficient mechanical strength and corrosion resistance to ensure that it can safely transmit current during lightning without damage.

Ground

The grounding line is the conductivity of the connection to the downline and the ground body. Its main function is to further guide the lightning current of the line to the ground.The ground line generally requires the same material as the bottom line or better conductive performance to ensure that it can effectively transmit current.

Ground

The ground body is a conductive device that is directly buried underground. It is usually made of metal materials, such as steel bars, galvanized steel pipes, and copper sticks.The function of grounding is to introduce the light current through the ground wire.The design and installation of the ground body directly affect the performance of the lightning protection grounding system. The ground resistance value should be low enough to quickly and effectively disperse the lightning current to the earth.

The requirements for lightning protection and industry standards

Ground resistance requirements

According to different lightning protection levels and application scenarios, ground resistance has different requirements.Generally speaking, the lightning protection ground resistance of the building should not be greater than10 ohms, for special lightning protection occasions, such as flammable and explosive places, ground resistance requiresSeeking lower, usually not more than more than4 ohm.

Conduct cross -sectional requirements

According to national standards, the minimum cross -sectional area of lightning protection and ground lines must meet certain specifications.For example, for the introduction of steel to the line, the minimum cross -sectional area should be50 square millimeters; and for copper, the minimum cross -sectional area should be 16 square millimeters.

Ground -ground installation requirements

The installation of the ground body needs to consider soil resistivity, environmental humidity, corrosiveness and other factors. Generally, the ground body is required to be buried vertically into the ground, and the depth of the buried depth is generally not less than that of2.5 meters to ensure that it can play a ground role stably and effectively under different environmental conditions.

National Industry Standards

The design and construction of my country's lightning protection ground system must follow a series of national standards and specifications, such as the "Specifications for Lightning for Lightning for Buildings" (GB 50057-2010), "Specifications for the Construction and Acceptance of Electrical Device Installation Engineering Placement Device" (GB 50169-2016), etc.The selection of these standards for installation, ground resistance measurement of grounding resistance, and the choice of grounding materialsWait for detailed regulations.

The construction plan of Di Kai Technology Lightning Promoting Land

The construction plan of lightning protection grounding system generally includes the following steps:

On -site survey and design

Before construction, detailed on -site surveys need to be conducted to understand environmental factors such as soil resistance, groundwater level, and soil corrosion, and design the layout and specific plan of the grounding system according to the survey results.

Material selection and preparation

According to the design requirements, choose the appropriate lightning protection material, including lightning rods, leading lines, ground lines, grounding, etc.All materials should have good conductivity and corrosion resistance, and should meet relevant national standards.

Installation of the offline

Depending on the design drawings, installation of lightning rods and leading offline.The bottom line should be installed along the corner of the building or the outside of the pillars to ensure close connection with the building structure, while avoiding the bending of sharp corners to reduce the inductance effect.

Burial

At the selected ground point, digging the appropriate deep grooves, and buried the ground body (such as copper sticks or steel pipes) vertically into the ground.According to the soil conditions, a horizontal or radial setting method can be adopted to achieve a better grounding effect.

Local connection

The bottom line is connected to the ground line through the ground line. The grounding line should be as short as possible to reduce the inductance and impedance to ensure that the lightning current can quickly introduce the earth.The connection should be tightened by welding or bolts, and anticorrosive treatment should be done.

Ground resistance measurement

After completing the installation of the grounding system, the ground resistance is required to ensure that the ground resistance value meets the design requirements and national standards.If the ground resistance value exceeds the standard, measures the number or layout of the ground body should be adjusted, or measures such as lower resistance.

Construction acceptance

After the lightning protection ground construction is completed, the acceptance and acceptance shall be performed in accordance with national standards to ensure that the system parameters of the system meet the design requirements and specifications.The acceptance content includes material quality inspection, installation quality inspection, ground resistance measurement, etc.

Di Kai Technology targets lightning protection projects and lightning protection grounding construction plans for different industries

Construction industry: In the construction of construction, the design of the lightning protection grounding system needs to consider the height, structure and function of the building.The building should be installed with a lightning rod or a lightning strip to avoid lightning on lightning.The ground should adopt a multi -point ground, and the ground resistance should be less than10 ohm.The grounding body should use galvanized steel pipes or copper rows, and all metal structures should beReliable to the grounding system.

The power industry: The power of power equipment for lightning strikes is weak, so the lightning protection requirement of the power system is high.The high -voltage substation should be installed with lightning rods and lightning mocks. At the same time4 ohm.For overhead lines, appropriate lightning protection lines should be set up, and grounding devices are installed at each tower to ensure that the lightning current can be quickly leaked.

Communication industry: The precision of communication equipment is high, and it is easily damaged by lightning strikes.Therefore, the lightning protection of communication base stations and computer rooms need to pay special attention.The base station tower body and equipment should be installed with lightning rods and connected to the ground network by leading down the line.The grounding network should adopt a circular or radiation layout, and the ground resistance should not exceed5 ohm.At the same time, the signal lightning protection should be installed to protect sensitive electronic equipment.

The petrochemical industry: The flammable and explosive environment of the petrochemical industry is extremely strict for lightning protection.The storage tank and oil pipeline should be installed with a lightning protection zone and a comprehensive grounding network layout to ensure that the lightning current can be safely leaked.The grounding resistance of the ground network should be less than1 ohm, to prevent electricity from causing fire.The grounding connection of the device should be firm, use copper cable connection, and regularly check the integrity of the grounding system.

Data Center: Data Center has extremely high requirements for power supply and communication, and the lightning protection grounding system needs to meet the highest standard.Independent power and signal grounding system should be set up, and it should be well connected with the device shell.The ground network should be used in copper or galvanized steel, which is densely arranged. The ground resistance should be controlled0.5 ohm.In addition, the power supply and signal lightning protection need to be installed to provide comprehensive protection for power cords and data cables.

Di Kai technology lightning protection land system is an important measure to ensure the safety of buildings and internal equipment.Through reasonable design and installation of downline, grounding lines, and ground body, a complete lightning protection grounding system can be formed, which can effectively introduce light current into the earth and protect the building from lightning damage.During the construction process, we need to strictly follow national standards, choose the appropriate materials and construction methods, and carry out strict quality control and acceptance to ensure the safety and reliability of the systemic system of lightning protection.