Know the grounding wire, grounding device, what is the grounding sealing wire?

The grounding wire can be divided into different environments according to the use environment: 1. Outdoor grounding wire: the size and length are generally

3 (where 3 refers to the number of phases of the grounding wire, that is: there are 3 forks, refers to the length of the phase, refers to the length of the grounding copper wire between the busbar clamp and the grounding clamp).2 Indoor Grounding Wire:

The size length is generally: 3 1m 5m (where 3 refers to the number of phases of the grounding wire, that is: there are 3 bifurcations, 1m refers to the length of the phase, and 5m refers to the length of the grounding copper wire between the busbar clamp and the grounding wire clamp).

3 personal security lines: outdoor line three-phase conjunction type (where 3 refers to the number of phases of the grounding wire, that is: there are 3 forks, refers to the length of the phase, 2m refers to the length of the grounding copper wire between the busbar clamp and the grounding clamp).

The fiefdom wire and the grounding wire are the same, the name is different, but the grounding has different forms, one is protective grounding (for example, the grounding in the low-voltage equipment shell is the protective grounding), and the other is the working grounding (for example, when overhauling the transformer, after stopping the switch on the high and low voltage side, after opening the isolation switch on both sides, the grounding wire is added on both sides of the transformer, which is the working grounding).

Protective grounding is a protective device set up to prevent damage to the equipment caused by the reverse polarity of the power supply, and the simple method is to add a reverse diode to the ground at the input end of the power supply, which is particularly common in the circuit of car audio equipment. Done, if satisfied, thank you.

Grounding is the top priority. In order to ensure the labor safety of power construction operations, the installation location and requirements of the grounding sealing line are reiterated as follows: 1. The overall requirements for the grounding sealing line:

1. The grounding and sealing line must meet the requirements of the "Railway Electric Power Safety Work Regulations". It is strictly forbidden to replace the grounding wire with a personal security cord. 2. The location and quantity of the grounding wire installed on the power outage operation ticket shall meet the requirements of the "Railway Electric Power Safety Work Regulations".

The position and corresponding number of each group of grounding wires to be installed for this operation shall be marked in detail on the work ticket. The grounding sealing line installed at the job site must be consistent with the work ticket for power outage operation, and it is forbidden to hang less and not install the grounding sealing wire at the designated position. 3. It is forbidden for the staff to change the position of the grounding wire specified in the work ticket without authorization.

If a change is required, the person in charge of the work shall obtain the consent of the issuer of the work ticket.

I knew that the grounding wire probably looked like a computer plug. Left zero right in the middle of the fire.

What is a fiefdom line? How is it different from a general grounding wire?

These are two different types of medium and high voltage fiefdoms. Grounding wires can be divided into different environments according to different use environments: 1. Outdoor grounding wires:

The size length is generally: 3 (where 3 refers to the number of phases of the grounding wire, that is: there are 3 forks, refers to the length of the phase, refers to the length of the grounding copper wire between the busbar clamp and the grounding clamp).

2. Indoor grounding wire: the size and length are generally: 3 1m and 5m (where 3 refers to the number of phases of the grounding wire, namely:

There are 3 bifurcations, 1m refers to the length of the phase split, and 5m refers to the length of the grounding copper Danshan line between the confluence clamp and the grounding wire clamp).

Dear, hello, I am happy to answer for you, what is grounding Answer: Grounding refers to the neutral point of the electrical system and the electrical device, the exposed conductive part of the electrical equipment and the external conductive part of the device are connected to the earth through the conductor. It can be divided into working grounding, lightning protection grounding and protective grounding.

The working grounding is set by the operation needs of the power system (such as the neutral ground), so under normal circumstances, there will be a long-term flow of current through the grounding electrode, but only an unbalanced current of a few amperes to tens of amperes. In the event of a grounding fault in the system, there will be thousands of amperes of working current flowing through the grounding electrode, but this current will be divided by the relay protection device in the inner notch, even if it is a backup protection, the action is generally within 1s. Lightning protection grounding is a grounding designed to eliminate the dangerous effects of overvoltage, such as the grounding of lightning rods, lightning wires and lightning arresters.

The lightning protection grounding will only flow under the action of lightning impact, and the lightning current amplitude flowing through the lightning protection grounding electrode can reach tens to hundreds of thousands of amperes, but the duration is very short. Protective grounding is a grounding set up to prevent equipment from endangering personal safety due to insulation damage and electrification, such as metal shells, reinforced concrete poles and metal towers of power equipment. Protective grounding will only flow through the equipment if the insulation is damaged, and its value can vary over a wide range.

When the current flows through the above three types of grounding electrodes, the potential of the grounding electrodes will increase, which will affect the safety of people and equipment. For this purpose, it is necessary to limit the potential increase of the grounding electrode or to take appropriate safety measures to ensure the safety of equipment and personnel. The role of grounding is mainly to prevent people from being subjected to electric shock, equipment and line damage, fire and lightning strikes, electrostatic damage and ensure the normal operation of the power system.

Grounding is an electrical safety measure taken to ensure the normal operation and personal safety of electrical equipment, which is realized by connecting the metal wire with the grounding device, and the commonly used ones are protective grounding, working grounding, lightning protection grounding, shielding grounding, anti-static grounding, etc. The grounding device introduces the leakage current, electrostatic charge and lightning current that may be generated on electrical equipment and other production equipment into the ground, so as to avoid personal electric shock and possible fire, ** and other accidents.

In the actual use of electricity, most of the grounding methods used are: on the low-voltage side of the transformer, the neutral point of the transformer is grounded, and the shell of the transformer is also grounded at the same time, which is basically connected together. Before the three-phase five-wire line, before the power supply is introduced into the user's home, the grounding protection line (PE) generally needs to be repeatedly grounded to ensure the safety of the user's electricity.

In this way, there are three wires introduced into the user's home: the fire wire, the neutral wire and the grounding protection wire. **In the case of a complete circuit, because the neutral wire and the grounding wire are connected together at the low-voltage end of the transformer, there will be a 220V voltage from the live wire to the ground and the neutral line to the ground.

However, it should be noted that although the neutral wire and the grounding wire are connected together at the beginning of the power supply, the functions of the two are not the same and cannot be mixed: there is a current passing through the neutral circuit under normal circumstances, while there should be no current passing through the grounding wire, otherwise it will cause the leakage protection device to act and trip.

In the past, there was no leakage protection in the old-fashioned power distribution device, so some people used the grounding wire as the zero line in order to steal electricity, or to urgently need electricity after the zero line was broken.

If you are talking about 120V voltage, then it can prove that the ground wire is broken, and someone in your family is using the ground wire as a neutral line.

The grounding wire is a wire connected to the earth, which has the effect of preventing leakage, and is also known as the safe return route. If the insulation of electrical equipment in our home is poor, and its shell has static electricity, the grounding wire can transmit these static electricity, so as to avoid the occurrence of electric shock accidents.

What is a grounding wire.

The grounding wire is a wire that is connected to the earth, and we can judge this characteristic according to the name of the grounding wire. The grounding wire is also known as the safety return route, which has the effect of preventing leakage.

For example, if the insulation of electrical equipment in our home is relatively poor, it will cause its shell to have static electricity, and the grounding wire can transmit these static electricity to the earth and release it, so as to avoid the occurrence of electric shock accidents to a large extent.

When we usually touch the socket cavity, plugs, and electrical switches, we must wipe our hands dry first, otherwise we may be electrocuted when we touch these things, which will cause great harm to our body.