Regarding the single phase meter connection method for three phase electricity, can the three phase

Question 1 A: Single-phase tables will not go too many words.

Question 2: No.

Question 3 A: a) If the incoming end of the meter of user A is wired:

1) It has no effect on the words of user A's watt-hour meter.

2) The safe ampacity of the four leads from the main line to the watt-hour meter should be considered, and the rated current should be greater than the rated current of (user A + user B).

3) The frontal chamber current of the main gate air switch of user A + the frontal chamber current of the main gate air switch of user B should not be greater than the rated current of the four leads.

b) If the outgoing end of the meter of user A is wired:

1) Subscriber A's meter = Subscriber B's meter + Subscriber B's meter loss. (When user B pulls down the main switch and does not use electricity, the current coil has no current, and the watt-hour meter does not go out of words.) However, in the watt-hour meter of user B, the voltage coil is connected to the road for 24 hours, and the watt-hour meter of user A is rotating slightly for 24 hours.

This is what we often call table loss).

Ibid.

First, it is unsafe, and second, there is an error in the meter reading.

1. Will the single-phase meter go through too many electronics??? I don't know what you're trying to say.

2. There is an error in the meter.

3. Look at the power supply that is connected from the ** of household A, in order to judge whether there is an impact, the voltage between the three-phase electric fire wire and the live wire is 380V, and the voltage between the live wire and the neutral line is 220V

Personally, it is not recommended to wire like this, it is unsafe and non-standardized.

Hello dear. The three-phase meter can be connected to single-phase electricity 1, and to be precise, single-phase electricity can be connected to a three-phase 4-wire watt-hour meter. 2. The reason is that the internal structure and working principle of the three-phase watt-hour meter voltage coil is 380V, and the single-phase electricity cannot provide the working voltage, so it cannot be measured correctly.

The three-phase four-wire, that is, the watt-hour meter with the working neutral line n can be applied, and its internal voltage coil is 220V which can meet the working metering requirements. 3. To put it simply, the three-phase four-wire watt-hour meter is multi-purpose metering (single-phase, three-phase), and the three-phase watt-hour meter is single-purpose metering. Dear, <>

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First, let's introduce the first wiring method.

The first wiring method: three-phase power supply into 1---4---7, outlet: 2--5---8. The zero line goes in 10 10 out.

Physical diagram: Compared with the wiring diagram above, 1--4--7 into 2--5---8 out. Be sure to pay attention to the incoming and outgoing wires.

The second connection: transformer.

Wiring diagram: When the load is relatively large, we choose to use a transformer to turn the large current into a small current and then measure it through the meter.

Wiring**: Note that there is no connecting piece between 147 and 258, 147 is connected to the S1 end of the three transformers, 369 is connected to the S2 end of the transformer, ABC three live wires pass through the P1 side of the transformer, and the S2 of the three transformers are connected to the ground together.

Summary: Whether the three-phase meter is a direct wiring method or a transformer, we choose the wiring of one wire after one wire when wiring, first connect the incoming wire, and then go out of the contactor.

Open the wiring cover of the meter, there is ABCN marked above or below the binding post, first power failure and operation-related equipment must be blacked out, generally connect the voltage line first, that is, VA VB VC N

Then connect the current line, pay attention to the current line can not be opened, there must be in and out, that is, IA in, IA out... Then short the IA IB IC three-phase outgoing cable to N.

Of course, it is also necessary to connect the 220V power cord.

The voltage line is easy to connect, just connect it according to the mark.

The current line is marked with IA IB IC and SI S2, SI is in and S2 is out.

Hello dear. I have seen your question here, and I am trying to sort out the answer, and I will get back to you in five minutes, please wait a moment! ^

Hello dear, how to connect the three-phase five-wire meter 1, the three-phase five-wire power supply system is called TN-S system, in which the fifth line PE is not current, it is a safe ground wire, so when measuring with a meter, only the first four lines need to be connected. 2. The principle of direct access to the three-phase four-wire electric energy meter refers to the five-wire system in the three-phase five-wire system: 3 phase wires plus a ground wire and a neutral wire.

The most widely used low-voltage transmission mode is the three-phase four-wire system, using three phase wires plus zero line power supply, the zero line is led out by the neutral point of the transformer and grounded, the voltage is 380 220V, take any one phase wire plus the zero line to form a 220V power supply line for general household use, the voltage between the three phase wires is 380V, and the general power supply machine is used. The three-phase five-wire system has one more ground wire than the three-phase four-wire system, which is used in places with high safety requirements and unified grounding requirements. There is also a three-phase six-wire connection, in addition to the working zero line, protection grounding, but also specially equipped with a grounding wire, this wire and the equipment ground wire to connect separately, not connected with any other wire, used for the protection of instruments and equipment, because the damage of electrical parts is often only a few microseconds, so to lead the malfunction current back to the ground faster, the instrument needs to be directly grounded.

I don't know if the transformer is used, if so, the meter is connected as before, but the three transformers are omitted, and the S1S2 zero live wire is still a wire each. If the upper meter is not connected to the incoming and lower meter inlet end of the load, the load is connected to the lower meter as it is.

1 and 2 shorts.

The connection method of the household meter is to short 1 and 2, 3 and 4 are originally connected, so that the meter is full, the speed depends on the thickness of the short-circuited power cord, the thicker the short-circuited wire, the slower the meter goes, and even does not turn.

One is to use a circuit transformer to connect with the watt-hour meter, and the other is to directly wire the inlet watt-hour meter. Open the wiring cover of the watt-hour meter, generally there is an installation wiring diagram on the back of the cover, which is the power supply inlet. It is not necessary to distinguish the ABC three phases, but it must be 3 live wires, that is, 3 phase wires.

Then install the three phase wires in the terminal holes, and then connect the wires. Finally, connect the neutral line to the position where the watt-hour meter is connected to the neutral wire.

Three-phase four-wire system, in the low-voltage distribution network, the transmission line generally adopts the three-phase four-wire system, in which three lines represent A, B, C three phases, and the other is the neutral line N or the neutral point grounding on the PEN power supply side, then the neutral line is also called the neutral line.

In the single-phase transmission line entering the user, there are two lines, one we call the phase line L, and the other we call the middle line N, the middle line normally passes the current to form the circuit of the current in the single-phase line.

In the three-phase system, when the three-phase is balanced, the neutral wire (neutral line) is current-free, so it is called the three-phase four-wire system; In the 380V low-voltage distribution network, the N-line is set up to obtain the 220V phase-to-phase voltage from the voltage between the 380V lines, and it can also be used for zero-sequence current detection in some occasions to monitor the balance of three-phase power supply.

Three-phase four-wire active and reactive energy meter The electromagnetic component is a separate structure, the voltage movement adopts a closed sample movement made of whole punching, the rotation system is statically balanced, the bearing is a double gem structure with a shockproof spring, the damping element is made of aluminum-cobalt 34 magnet, and the temperature compensation is made of thermal magnetic alloy sheet. The watt-hour meter is synthesized by voltage and current elements to generate and move into the magnetic field, so that the disk rotates under its action, and the speed of the disk is proportional to the size of the load current, so as to achieve the purpose of measuring electric energy.

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The main structure of the watt-hour meter is composed of voltage coil, current coil, turntable, rotating shaft, brake magnet, gear, meter, etc. Single-phase meters, which are generally civilian, are connected to 220V equipment.

Because you don't provide the wire diameter of the incoming and outgoing wires and the load size of each loop, the figure can only be represented by xx. This is a standard distribution box system diagram, and the meters are centrally installed in the distribution box. If you don't understand something, please feel free to ask.

Wiring diagram (if there are more than 3 meters, etc.):

1.Determination of the appropriateness of the urban-rural income gap.

Internationally, the Gini coefficient is usually used as the standard, and the income gap is divided into moderate income gap and inappropriate income gap. According to international practice, income disparities are moderate when the Gini coefficient is between, especially in between. And when the Gini coefficient is below or above, the income gap is inadequate.

The Gini coefficient below means that the income distribution is too even. In such a state, people are in a state of competition and lack of vitality, which is not conducive to the mobilization of people's enthusiasm and the improvement of the efficiency of the national economy. The Gini coefficient above means that the income distribution is too large, which will have serious negative social effects.

The principle of moderation of income disparity also applies between urban and rural areas, but because the urban-rural income gap index is most commonly used to measure urban-rural income disparity. Therefore, the urban-rural income gap index, that is, the urban-rural per capita income ratio, is generally used to illustrate the moderation of the urban-rural income gap. According to the 1995 data of 36 countries published by the International Labour Organization, the ratio of per capita income between urban and rural areas is less than that in the vast majority of countries, and only 3 countries have a ratio of more than 2.

Accordingly, many scholars regard the urban-rural income index as a moderate warning line for the urban-rural income gap.

2.The moderation of the income gap between urban and rural areas in China.

Statistics show that the income gap index between urban and rural residents in China has been at a level from 2000 to 2004. According to the internationally accepted evaluation indicators, the income gap between urban and rural areas in China is very large, and it has long crossed the international warning line.

However, in fact, due to the great diversity of the situation in different countries, the meaning of the same level of urban-rural income gap index in different countries at different stages of development and in the same period of time is different, and the corresponding socio-economic phenomena and consequences are very different. China's land area is vast, the agricultural population is large, and the geographical conditions are very different, so we cannot blindly apply international practices when it comes to the moderation of China's income gap. Instead, the relationship between the urban-rural income gap and the country's economic and social stability should be analyzed in detail.

A moderate level of income gap between urban and rural areas should be commensurate with a certain level of economic development and development stage, which can not only support or promote the sustained and efficient development of the national economy, but also be conducive to social stability and progress. According to this criterion, we will examine the situation of China's economic development and social stability since the beginning of reform and opening up.

1.Direct access method If the power of the load is within the allowable range of the watt-hour meter, that is, the current flowing through the current coil of the watt-hour meter will not cause the coil to burn out, then the direct access method can be used. Direct access method: single-phase watt-hour meter.

2.When measuring the power consumption of a single-phase circuit with a large current with a single-phase watt-hour meter through the transformer access method, a current transformer should be used for current conversion, and the current transformer should be connected to the current coil of the watt-hour meter.

Economic responsibility audit often involves more complex issues, with higher requirements, audit responsibility and audit risk is larger, so the audit department should increase training efforts for this point, organize audit staff to participate in various training activities, promote the construction of audit team, and improve training funds, through different forms of follow-up education, to ensure that auditors have excellent professional quality, ideological and political quality and psychological quality, establish a strict concept of the rule of law, and then improve the level of law enforcement. The audit department should adhere to the people-oriented concept, reform the cadre personnel system, promote the continuous improvement of the cadre's professional ethics and professional quality through the competition and incentive mechanism, and promote the continuous improvement of the legal system.

How precious life is, and how long the primitive life was born. We have life now, but have we ever thought about how hard life is? Have you ever imagined how many lives you could have?

Have you ever thought about cherishing it? If not, then you need to start taking action to increase your awareness of safety and protect the priceless treasure of life. Is there anything more important than life in the world?

Without life, you lose everything.

The steps of single-phase meter connection are as follows:Tools: DDS493 single-phase electronic energy meter, screwdriver, 2 live wires, 2 neutral wires.

1. Open the cover to view the circuit diagram, open the lid at the wiring of the electric energy meter, generally there will be a circuit diagram on the back of the cover, and the wiring can be carried out according to the circuit diagram. The electric energy meter has a total of 4 terminals, of which the incoming line is the outgoing line.

2. Connect the incoming wire to connect a red live wire to hole 1 and a blue zero wire to hole 3.

3. Connect the outgoing wire, connect another red live wire to hole 2, and connect another blue zero wire to hole 3. Attach the lid and close the lid.

Single-phase electricity meter application range1. Kilowatt-hour active electricity measurement.

2. Sub-measurement, cost allocation, and internal accounting.

3. Remote pulse output.

4. It is suitable for commercial buildings and public infrastructure buildings, and realizes the measurement and statistics of electric energy consumption in different areas or different loads in the building.

5. It is suitable for electric energy consumption statistics and internal accounting of different production lines or various loads of industrial buildings.