What happens if a single phase meter is connected to the wrong wire? 10

1. If the incoming and outgoing lines are connected to the wrong line, it will be reversed If the incoming line 1 (l) is connected to the neutral line and 3 (n) is connected to the live wire, then the meter works normally, but it is convenient for the user to steal electricity.

2. Single-phase electricity.

Energy meter, applied to active electric metering: high measurement accuracy (level), accurate measurement Modular small size (18mm), can be easily installed in various terminal distribution boxes.

Inside. Rail-mounted, bottom-wired, perfectly matched with miniature circuit breakers. Intuitive, easy-to-read mechanical display reduces the risk of data loss in an unexpected power outage. No external operating power supply is required. Wide operating temperature range.

3. Single-phase electricity is a phase wire.

commonly known as the live wire) and a neutral wire, if necessary, there will be a third wire (ground wire).

The live line 1 in and 2 out, the zero line 3 in and 4 out is regular, but the live line 1 in and 2 out, the zero line 3 out and 4 in can also be, but in the work are all live wire 1 in and 2 out, and the zero line 3 in and 4 out. Why do I say that the live line is 1 in and 2 out, and the zero line is 3 out and 4 in, because the zero line is connected to a contact in the table. The meter does not move, and the internal wiring is broken.

1 into the live line, 2 into the zero line, 3 out of the live line, 4 out of the zero line, what will be the consequences of this connection?

What if it's zero 1 in and 2 out, and fire 3 in and 4 out.

What are the dangers of the live wire being reversed from the neutral wire: If you don't pay attention to the installation, the live wire is reversed from the neutral wire. In this case, the reversal of the live wire and the neutral wire will not affect the use of electrical appliances at home, but there are hidden dangers for safe electricity use.

The main thing is that the control switch of some household appliances is used to control the live wire, if the live wire at the socket is reversed with the neutral wire, it will cause the control switch of the household appliance to control the neutral line. space

Metering principle: The electric energy calculation formula of the electric energy meter is as follows: p=uicos It can be known that the normal measurement of the electric energy meter needs to measure the voltage and current flowing through the electric energy meter, and then automatically measure and superimpose the electric energy consumption through the electric energy meter.

The voltage is measured by parallel voltage transformers. The current is measured by a series current transformer. Added:

The voltage and current flowing through the electric energy meter will generate a magnetic field, which will then produce a torsional torque, which will drive the rotating shaft of the electric energy meter to rotate and measure. space

Is the fire zero line of the meter reversed? The live wire and the zero line are connected to the meter will go, the meter may not be connected to the wrong post, the general meter has a total of five binding posts, the first and second have a wire, is for the voltage coil, if there is no line meter will not go, the correct connection is the first, the fourth access to 220 volt voltage, the third, the fifth has 220 volt voltage output, the second is from the first terminal post to the voltage coil electricity binding post, if this connection will not go, look at the consideration of the meter broken. Normal wiring of the electricity meter:

Household energy meters are single-phase watt-hour meters, which are generally divided into four terminals: terminal 1, terminal 2, terminal 3, terminal 4. Normal use wiring:

1-live line in, 2-live line out, 3-zero line in, 4-zero line out. This is the correct wiring of the single-phase watt-hour meter, and the energy meter can be rotated, metered, and used normally.

Mechanical single-phase watt-hour meter, if the incoming and outgoing lines are reversed, the counter of the meter will be reversed, and the metering algorithm will be reversed.

In the case of a traditional turntable meter, the meter hands are reversed. If it were a smart meter now, the output would be without electricity. The turntable watt-hour meter is calculated by rotating the turntable by the rotating magnetic field generated by the voltage coil and the current coil.

If the incoming and outgoing lines are reversed, the current phase of the current coil is 180 degrees different from that of the positive connection, and the rotating magnetic field generated is opposite to that of the positive connection, so the watt-hour meter will be reversed. The new type of smart meter has a power-off relay between the output and the input, and the relay will not engage when the input has no power supply, so the output will not have power when the input and output are connected wrong.

The input and output of the meter are reversed, the mechanical watch of the past will be reversed, and the modern electronic watch will measure normally.

Answer: If the wiring of a single meter is reversed, the numbers in it can be reversed, and if the meter is damaged for a long time, it is very largeIt is also not allowed by the power supply, which is an act of stealing electricity.

This won't be good, it can still be used normally, and the current tables are all smart watches, and they can be used normally if they are wrong.

If it is the current electronic smart meter, it will work normally if it is reversed;

If it is an old-fashioned mechanical meter, the reverse meter will be reversed, and once the reverse meter was reversed, and the real phenomenon was seen.

The reverse connection is the reverse connection between the live wire and the neutral wire, which is no problem for use, but it will bring unnecessary safety problems in the future:

Because people know that the national standard is that the first terminal hole is the live wire in, and the second terminal hole is the live wire out.

The third and fourth terminal holes are the zero line in and out, if the connection is reversed, the descendants mistakenly take the live wire as the zero line! If the first terminal hole is the live wire out, and the second terminal hole is the live wire in, the fire meter will be reversed.

For single-phase meters, the live wire is reversed from the neutral wire, and the internal voltage coil has voltage, and the current coil also has current passing through, so it is no problem to say that the live wire is reversed with the neutral wire.

Extended information: When the electric energy meter is connected to the circuit under test, there is alternating current flowing through the current coil and voltage coil, and the two alternating currents produce alternating magnetic flux in their cores respectively; The alternating magnetic flux passes through the aluminum disc and induces eddy currents in the aluminum disk; The eddy current, in turn, is subjected to force in the magnetic field, which causes the aluminum disc to obtain torque (active torque) and rotate.

The greater the power consumed by the load, the greater the current through the current coil, and the greater the eddy current induced in the aluminum disc, the greater the torque that makes the aluminum disc rotate. That is, the magnitude of the torque is proportional to the power consumed by the load. The higher the power, the greater the torque, and the faster the aluminum disc will rotate.

When the aluminum disc rotates, it is affected by the braking torque generated by the permanent magnet, and the braking torque is opposite to the direction of the active torque; The size of the braking torque is directly proportional to the speed of the aluminum disc, and the faster the aluminum disc rotates, the greater the braking torque. When the active torque and the braking torque reach a temporary balance, the aluminum disc will rotate at a constant speed. The electrical energy consumed by the load is directly proportional to the number of revolutions of the aluminum disc.

When the aluminum disc rotates, the counter is driven to indicate the electrical energy consumed. Off, at this time, the water heater will have a working indicator light on, wait for about 30 minutes, and then open the mixing valve in the hot water position.

4. The water is hot and can be used, if it is not hot, wait! Generally, the mixing valve is open when it is lifted up, and it is closed when pressed downward, the upper left is hot water, the upper right is cold water, and the middle is mixed water, which is getting colder and colder from left to right, and you only need to open and close the mixing valve when you use it in the future!

5. Unplug when not in use for a long time, remove the power supply under normal circumstances, then turn on the switch of the water heater, then set a temperature, and wait until it is heated to take a shower!

Advantages of storage water heaters.

1. The current electric water heaters basically adopt the heating mode of water and electricity separation, and the safety is guaranteed.

2. The general user line can be loaded, and the limitation impact is small.

3. The internal structure is relatively simple and easy to maintain.

4. Relatively low.

Storage type electric water heater disadvantages:

1. It is bulky, inconvenient to install, and occupies space.

2. It is easy to form scale and is troublesome to clean.

3. The preheating time is long and the heating is slow, and the use is greatly limited by time and capacity.

4. Power consumption, preheating and heat preservation process need a lot of heat dissipation.

5. The water supply is limited, and the water heater with a small content will find that the hot water is not enough halfway through washing.

Legal analysis: If the orange branch is connected to the wrong line of the meter, the power supply department should be responsible, after all, these lines are responsible for them, and if the line connection map into the party's house is connected, the household should be responsible.

Legal basis: Civil Code of the People's Republic of China

Article 1184: Where the property of others is infringed upon, the property losses are to be calculated in accordance with the market or other reasonable methods at the time the losses occurred.

Article 1187:After the damage has occurred, the parties may negotiate the method of payment of compensation costs. where the negotiation is inconsistent, the compensation fee shall be paid in a lump sum; If it is really difficult to make a one-time payment, it can be paid in installments, but the infringed party has the right to request Gao Yi to provide corresponding guarantees.

The meter is reversed. In the case of a digital single-phase meter, its numbers will show a negative number.

This can cause the meter to not work properly. 1. If the "zero line" and the "live wire" in the incoming line are reversed, the speed of the meter is uneven, resulting in inaccurate measurement of electric energy consumption. 2. If the two lines of the incoming line and the outgoing line are reversed, the phenomenon of "reversal" of the meter will occur.

3. The old mechanical meter inlet and outlet lines will be reversed, but it will not accelerate the rotation, and the speed is determined according to the load size. Today's smart meters are not reversed. Anyway:

If the wiring is not based on the design principle of the original meter, the meter cannot correctly measure the amount of electricity!

Single-phase energy meter: single-phase energy meter, used in active power measurement: accurate measurement Modular small size (18mm), can be easily installed in various terminal distribution boxes.

Rail-mounted, bottom-wired, perfectly matched with miniature circuit breakers. Intuitive, easy-to-read mechanical display reduces the risk of data loss in an unexpected power outage. No external operating power supply is required.

Wide operating temperature range. Scope of application: 1. Kilowatt-hour active electricity metering.

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.

If it helps, please give it a thumbs up.

Wiring of a single-phase watt-hour meter. Reversed due to the change of magnetic field, according to the right-hand spiral rule to change the direction of the coil, the magnetic field will also become the opposite direction of the meter will go reverse metering, and as a private can not be dismantled at will, will make mistakes in public facilities, only the power supply department has the right to thank the landlord.

As a household single-phase watt-hour meter, 1 2 is a current coil, 1 3 (4) is a voltage coil, the voltage coil is not wrong, and 3 4 is connected together in the meter and can only be connected to the zero line. 1 is the inlet (live wire) of the current coil, 2 is the outgoing (load), if it becomes 2 in and 1 out, then the meter is reversed (the absolute value of the meter remains unchanged). There is also a single-phase meter with transformer, 1 2 is the current coil, 3 4 is the voltage coil, 3 is connected to the live wire and 4 is connected to the neutral wire.

In the past, the mechanical watch would be reversed, but now the induction watch is connected to the reverse and it doesn't matter, it is a normal count.

Now it's all electronic watches, and the reverse is also a positive turn.

The turntable mechanical watch can still measure normally.

There is a problem, which causes the meter to not work properly.

1. If the "zero line" and the "live line" in the incoming line are reversed, the speed of the meter will be uneven, resulting in inaccurate measurement of electric energy consumption.

2. If the two lines of the incoming line and the outgoing line are reversed, the phenomenon of "reversal" of the meter will occur.

3. The old-fashioned mechanical trace meter will reverse the incoming and outgoing lines, but it will not accelerate the rotation, and the speed is determined according to the size of the load. Today's smart meters are not reversed.

In short: if the wiring is not according to the design principle of the original meter, the meter cannot correctly measure the amount of electricity!

Ammeter. and the voltmeter will turn in the opposite direction, and it is easy to burn the meter in serious cases. But it doesn't have much of an impact on modern meters.

Precautions for installing electricity meters.

1. Installation environment.

When connecting to the meter, it is necessary to pay attention to the energy meter.

Installed on a dry and vibration-free wall, the surroundings should be clean and bright. Usually, the material of the watch box should be made of plastic products. If it is a metal watch box, it should be reliably grounded.

2. Correct wiring.

When installing the meter, you should pay attention to the connection between the lines, because the wrong line can easily cause accidents. When wiring, the screws of the terminal pile head should be tightened, otherwise it is easy to heat up when the large current passes.

If it is light, it will affect the normal electricity consumption of users, and in serious cases, it will burn out the electric energy meter.