Why can the anti static grounding device be set together with the anti induction lightning?

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1. The oil tank should be grounded with lightning protection, and the grounding point should not be less than two.

2. The buried oil tank should be electrically connected with the process pipeline exposed to the ground and grounded.

4. The beginning, end and branch of the oil pipeline laid on the ground or in the pipe trench should be equipped with a joint grounding device that prevents static electricity and induction lightning, and its grounding resistance should not be greater than 30.

Grounding instrument. 6. Metal wires should be used to connect the flanges and hoses at both ends of the oil pipelines in the most dangerous areas. When there are not less than 5 connecting bolts of the flange, in the non-rot.

In the eclipse environment, it can not be crossed.

7. The grounding resistance of the anti-static grounding device should not be greater than 100.

The 220V power supply and distribution system should adopt TN-S system, and both ends of the cable metal sheath or cable metal protection pipe of the power supply system should be grounded, and the electricity in the power supply and distribution system should be grounded.

An overvoltage (surge) protector should be installed at the source that is compatible with the withstand voltage level of the equipment.

Partial concept of lightning protection grounding device:

1) Lightning receiving device: a metal rod (lightning receiver) that directly or indirectly receives lightning, such as lightning rods, lightning belts (nets), and overhead ground.

wire and lightning arrester, etc.

2) Down lead: The conductor used to conduct lightning current from the lightning receiver to the grounding device.

3) Grounding wire: a metal conductor that does not carry current under normal circumstances when the grounding terminal of electrical equipment and tower is connected with the grounding body or neutral wire.

4) Grounding body (pole): A metal conductor buried in the soil and in direct contact with the earth, called a grounding body. It is divided into vertical ground body and horizontal grounding body.

5) Grounding device: a general term for grounding wire and grounding body.

6) Grounding grid: a mesh grounding device composed of vertical and horizontal grounding bodies with the effect of discharge and equalization.

7) Grounding resistance: the sum of the grounding resistance of the grounding body or the natural grounding body becomes the grounding resistance of the grounding device, and its value is equal to the ratio of the grounding voltage of the grounding device to the current flowing into the ground through the grounding body. At the same time, the grounding resistance is also a sign of the level of the constant grounding device.

Electrostatic induction grounding is used to eliminate the static electricity on the conductor, but it cannot be used to eliminate the static electricity on the insulator. Because if the insulator with static electricity is directly grounded through the conductor, it is equivalent to directing the earth potential to the insulator, which will increase the risk of spark discharge, so the anti-static grounding method is only applicable to the conductor.

There are three types of grounding for electrostatic induction.

1. Direct grounding, that is, a type of grounding in which the metal conductor is electrically connected with the earth, so that the potential of the metal conductor is close to the earth potential.

2. Indirect grounding, that is, in order to electrostatic grounding of the electrostatic conductor and electrostatic voltage conductor outside the metal conductor, all or part of its surface is closely connected with the grounded metal conductor, and the metal is used as a grounding type of grounding electrode.

3. Jumper grounding, that is, a type of grounding in which two or more mutually insulated metal conductors are connected conductively by mechanical and chemical methods to fix the structure between metal objects, so as to establish a low-impedance path that provides current flow, and then grounding.

Lightning protection devices refer to flash connectors, down conductors, grounding devices, surge protective devices (SPDs) and other connecting conductors.

Classification of lightning protection. 1) Category 1: manufacturing and storage of pyrotechnics, etc., caused by sparks, causing great damage and personal damage; Buildings with Zone 0 or 20** hazardous locations.

2) Category II: National Key Cultural Relics Units; national buildings and large-scale buildings; National special and first-class large gymnasiums; Dangerous buildings that manufacture and store explosives and their products, and electric sparks are not easy to cause or cause great damage and personal damage.

3) Category III: Exception.

Categories 1 and 2 are the third category.

Lightning protection construction. 1. a pressure equalizing ring.

The equalizing ring is a horizontal lightning protection belt designed by high-rise buildings to prevent side lightning strikes. In the architectural design, when the height exceeds the radius of the ball (30 meters for the first class, 45 meters for the second class, and 60 meters for the third class), a pressure equalization ring is set every 6 meters. In terms of design, the equalizing ring can be welded into a closed ring by using the two main reinforcements in the ring beam, and this closed ring must be connected to all down conductors.

2. Lightning rod.

The setting rules of lightning rods are generally: the highest point and the protruding point, such as the ridge, eaves corner, and flat roof parapet corner.

Hello, the ground wire cannot be shared. Lightning protection and anti-static are two different concepts that need to be dealt with differently. Therefore, the grounding wires of lightning protection and Moriho anti-static cannot be shared.

Lightning protection grounding is to prevent injury to equipment or personnel caused by lightning strikes. The grounding resistance should be within the specified range, usually less than 10 ohms, the grounding wire must also be made of materials with good conductivity and specially designed grounding devices, it is recommended to use welding grounding methods. Lightning protection grounding requires a separate hill pin grounding scheme and professional design and construction.

Anti-static grounding is to prevent static electricity from interfering with the work of equipment, preventing personal electrostatic electric shock and accidents. The grounding resistance should be within the specified range, usually less than 4 ohms, the grounding wire can use copper wire, copper bar and other materials, it is recommended to use mechanical connection. Codes and standards for anti-static grounding also require professional design and construction.

To sum up, in order to ensure the safe and stable operation of the equipment, the lightning protection and anti-static grounding wires need to be installed separately and designed and constructed in strict accordance with the relevant specifications and standards.

Hello, lightning protection and anti-static common grounding wire is: yes. Lightning protection and anti-static grounding wires can be shared, but the following points need to be noted:

1.The material of the grounding wire should be a copper wire or copper bar that meets the standard, with a cross-sectional area of not less than 4 square millimeters. 2.

The dotted line should be as short as possible, no more than 2 meters away from the grounding point. 3.The grounding wire needs to be dismantled and has good contact with the earth, and the grounding point should be a grounding device that meets the standard.

4.The connection of the grounding wire should be firm and reliable, and should not be loose or fall off. 5.

Lightning and anti-static grounding wires should be connected to different grounding devices separately to avoid interfering with each other. 6.When using grounding wires, it is necessary to follow the relevant safety regulations to avoid accidents such as electric shock.

In short, lightning protection and anti-static grounding wires can be shared, but it is necessary to pay attention to the quality of the grounding wire and the connection method to ensure that it is safe and reliable.

What is lightning protection grounding, anti-static grounding, and protection grounding.

Dear, I am glad to answer for you: lightning protection grounding is divided into two concepts, one is lightning protection, to prevent damage caused by lightning strikes; The second is electrostatic grounding to prevent static electricity from harming. Protective Grounding:

In order to prevent the metal shell of electrical equipment from endangering the safety of people and animals and equipment due to insulation damage, as well as the need to set up corresponding protection systems, the metal shell or other metal structures of electrical equipment are normally uncharged and grounded.

Briefly describe the similarities and differences between anti-mine grounding and anti-static grounding (including jumping).

Briefly describe the commonalities and differences between anti-mine grounding and anti-static grounding (including jumping): according to the type of grounding, it can be divided into two types: artificial grounding body and natural grounding body. According to the grounding method, it can be divided into two types: horizontal grounding body and vertical grounding body.

Lightning protection grounding is divided into two concepts, one is lightning protection, to prevent damage caused by lightning strikes; The second is electrostatic grounding to prevent static electricity from harming. 1. The lightning protection of the factory is divided into the overall structure lightning protection, that is, the lightning protection of the main plant, and the main foundation is grounded and grounded to form a grounding network, and the grounding resistance is less than 10 ohms. Then it is connected with the main body of the steel bar or steel structure of the main plant.

The cement concrete roof is connected to the lightning belt or lightning rod, and the ground outside the wall must also have a grounding test point, and the steel structure should be directly led to the roof with galvanized flat iron. 2. The grounding of the power supply system is divided into protective grounding and working point grounding, and the protective grounding is the grounding of the shell of the live equipment. The manuscript refers to the grounding of the working point refers to the grounding of the zero line, and the key of the grounding network is the same as the lightning protection grounding method, and the slip resistance of the grounding chain is less than 4 ohms.

If the requirements are not met, the grounding electrode should be added, and if the conditions are not good, electrolyte should be added and/or the soil should be replaced. The working grounding and protective grounding are independently led out in the distribution room, and the system can be one. The way of working, such as the separation of the ground and neutral wires, can also be combined into one and lead to the electrical system (or equipment).

The grounding system must be grounded repeatedly. There is also an independent and separate way, the TN-S system. Ground zero can no longer be one.

3. Instrumentation grounding system. The grounding resistance of the system is less than 1 ohm and cannot be connected to the lightning protection grounding. Lightning protection grounding and anti-static grounding can be together, but it is necessary to meet the requirements of lightning protection grounding resistance not more than 10 ohms; Electrical equipment is divided into protective grounding and protection zero, the protective grounding can be directly entered into the ground in the case of leakage, and the protection zero is directly operated by the leakage protection device to cut off the power supply when leakage.

Electrostatic grounding can share a set of grounding wide hand devices with other grounding grounds. (Bianshan).

a.It's being cautious.

b.Mistake. Correct Answer: a