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Grounding device is also called grounding integration device: a device that forms an electrical connection between electrical equipment or other objects and the ground. (Building Electrical Construction Technology). The grounding device consists of a grounding electrode (plate), a grounding busbar (indoor and outdoor), a grounding down-conductor (grounding jumper), and a frame grounding. It is used to realize the purpose of connecting the electrical system to the earth. The metal object that is in direct contact with the ground for electrical connection is the ground electrode. It can be an artificial ground electrode or a natural ground electrode. This grounding electrode can be assigned some electrical function, such as being used as system grounding, protective grounding or signal grounding. The grounding busbar is the reference potential point of the electrical installation of the building, through which the part that needs to be grounded in the electrical installation is connected to the grounding electrode. It also serves another function, that is, by interconnecting the equipotential bonding lines in the electrical installation, the overall equipotential bonding between the large conductive parts of a building is realized. The connection line between the grounding electrode and the grounding busbar is called the grounding electrode lead.
Safety isolating transformer safety isolating transformer. Transformers that supply tools, other equipment and distribution circuits with safe extra-low voltage. Its input winding and output winding are electrically isolated by at least the equivalent of double insulation or reinforced insulation. Next, an excellent grounding device manufacturer, Sichuan Sunlight intelligent electric equipment Co., Ltd, will introduce the classification of grounding devices, basic concept of grounding device resistance and installation of grounding device.
Classification of grounding devices
The grounding device is composed of a grounding body (round steel, angle steel, flat steel, steel pipe, etc.) buried in the soil and a grounding wire for connection.
According to the purpose of grounding, the grounding of electrical equipment can be divided into: working grounding, lightning protection grounding, protective grounding, and instrument control grounding.
Working grounding: It is the grounding required to ensure the normal operation of the power system. For example, the neutral point of the transformer in the neutral point direct grounding system is grounded, and its function is to stabilize the potential of the power grid to the ground, thereby reducing the insulation to the ground.
Lightning protection grounding: It is the grounding set for the needs of lightning protection. For example, the grounding of lightning rods (wires) (now called lightning rods, wires, strips) and arresters is to make the lightning current smoothly lead to the ground, so as to reduce the lightning overvoltage, so it is also called overvoltage protection grounding.
Protection grounding device: also known as a safety grounding device, it is a grounding device set up for personal safety, that is, the electrical equipment shell (including the cable sheath) must be grounded to prevent the shell from being charged and endangering personal safety.
Instrument control grounding device: the thermal control system, data acquisition system, computer monitoring system, transistor or microcomputer type relay protection system, and telecontrol communication system of the power plant, etc., are set up to stabilize the potential and prevent interference. Also known as an electronic system grounding device. The above is the classification of grounding devices.
basic concept of grounding device resistance
The resistance of the grounding device refers to the resistance encountered when the current passes through the grounding body into the earth and spreads around. The earth has a certain resistivity, and if there is current flowing through it, the earth has different potentials everywhere. After the current is injected into the ground through the grounding body, it spreads around in the form of a current field. 15~20m away), the resistance per unit diffusion distance and the current density in the ground are close to zero, and the potential here is zero. The curve U=f(r) in the figure represents the potential distribution on the ground surface (r represents the distance from the lightning current injection point). The above is the basic concept of grounding device resistance.
Installation of grounding device
What else can I help you with?
Classification of Computer storage devices?
What is the classification ofcomputer storage.
What is Classification of output devices?
Monitor, plotter, and speaker.
A safety procedure where electricity is channeled directly into the ground?
The safety procedure you are referring to is called grounding. Grounding involves connecting electrical devices or systems directly to the ground to prevent the buildup of excess electricity, reducing the risk of electric shock or fires.
How does windows handle the installation of these additional devices?
look it up on the net
Is a standard designed to make the installation of new hardware devices easier?
PnP
What is the purpose of a grounding screw in electrical installations?
The purpose of a grounding screw in electrical installations is to provide a safe path for excess electrical current to flow to the ground, preventing the risk of electric shock or damage to electrical devices.
Composition and structure of grounding device?
Composition of grounding device The grounding device consists of a grounding body and a grounding wire. The metal conductor that is buried in the ground and directly in contact with the ground is called the grounding body, and the metal conductor that connects the necessary grounding part of the electrical device with the grounding body is called the grounding wire. for the grounding grid. The grounding body is a metal body buried in the soil, such as steel pipe, angle steel, flat steel, etc., with a length of about 2.5 meters. The grounding body can be buried horizontally or vertically. When burying horizontally, flat steel is generally used to make the grounding body, and the burial depth should not be less than 0.6 meters. When buried vertically, steel pipes and angle steels with a wall thickness of about 3.5 mm or more are generally used. Weld the flat steel on the grounding body as the lead-out conductor, and weld the bolt on the lead-out conductor to connect with the grounding wire. The ground wire generally adopts insulated copper wire and bare copper wire. The minimum cross-sectional area of the ground wire is 1.5 mm2 for insulated copper wire and 4 mm2 for bare copper wire. The above is the composition of the grounding device. grounding device. Grounding device structure The grounding device can provide simple, effective, and economical protection for the bearing to prevent bearing damage caused by working current or system fault current and lightning current passing through the bearing. Its working principle is: that the grounding wire transmits the current on the car body directly to the axle through the grounding device, and then forms a grounding loop through the wheel and the rail. At present, the more common axle end grounding device structures on subways, passenger cars, and EMU vehicles are: the grounding body provides a conducting circuit for the bearing current and realizes the insulation from the axle box; the axle box cover realizes the installation of the grounding body and the axle box; friction The disk cooperates with the carbon brush located on the grounding body to provide a reliable conduction circuit for the bearing current and realize low wear; the bearing pressure plate realizes the bearing positioning and friction disk installation. The axle box cover for subway and bus grounding devices has a metal labyrinth structure to achieve bearing sealing. The CRH1 EMU does not have a labyrinth structure on the axle box cover to achieve bearing sealing but relies on the good sealing performance of the bearing itself. The contact points of the carbon brushes of the above structures are close to the center of rotation and have the advantages of low linear speed and low wear. The above is the grounding device structure. Excellent grounding device supplier From the above introduction, we can understand the composition of grounding device and grounding device structure. Grounding device is used in many places of life. Grounding device plays an important role in many fields. If you are interested in a grounding device, give You recommend an excellent grounding device supplier Sichuan Sunlight intelligent electric equipment Co., Ltd. This company strictly controls the production process of grounding devices, and the products produced are of high quality, so you can buy with confidence. If necessary, welcome to browse and purchase.
What are the classification of JFET?
Junction Field Effect Transistor are classified as hi impedance devices
What are the disadvantages of CMOS circuit?
The metal oxide coating that gives mos devices their high impedance characteristics is susceptable to damage by electrostatic discharge which must be protected by grounding the devices when handled during assembly.
How can I properly ground an outlet?
To properly ground an outlet, you need to connect the grounding wire from the outlet to a grounding rod or the metal casing of your home's electrical system. This helps to prevent electrical shocks and ensures the safe operation of your electrical devices.
4 The process of providing a path to drain excess charge into Earth is called?
Grounding. This process helps to protect electrical devices, structures, and individuals from the risk of electrical shock or damage by safely dissipating excess electrical charge into the ground.
What is the common classification term used by Remote Storage to identify all media devices?
nothing
