What does the active and reactive power indicator mean on the three phase meter?

Electrical energy can be converted into various types of energy. For example, it is converted into heat energy through electric furnaces, mechanical energy through motors, and light energy through electric lamps.

The electrical energy consumed in these conversions is active energy. The meter that records this energy is an active energy meter. The principle of electrical engineering tells us that some electrical devices must first establish a conversion environment when they are engaged in energy conversion, such as:

Motors, transformers, etc. need to establish a magnetic field before energy conversion, and some electrical devices need to establish an electric field before energy conversion. Whereas, the electrical energy required to establish the magnetic and electric fields is reactive energy. The meter that records this energy is a reactive energy meter.

Reactive energy does not consume energy in the electrical device itself, but it will generate reactive current in the electrical circuit, and a certain loss will be generated in the current ** circuit. Reactive energy meters are dedicated to recording this loss, and generally only larger units are installed with such meters.

The active energy meter measures the actual active energy consumed by the electrical equipment, and all users have an active energy meter, which is the proof of billing.

The reactive energy meter measures the reactive energy consumed by the electrical equipment, and the reactive power consumed by the electrical equipment is measured.

20 (80), 20 is the rated load current, 20A and less, can run for a long time. 80A is the maximum current, above 20A to 80A, it can run for a short time, the larger the current, the shorter the operation time, and it cannot run after 80A.

The active light is on to indicate that the active power in the system is in use, and the faster the speed of flashing, the greater the active power of the load, and the same reactive light is on to indicate that the load and the system carry out reactive power exchange, and the flashing speed, the faster the speed of flashing, the greater the reactive power of the exchange.

The three-phase three-wire electric energy meter is divided into forward active power, forward reactive power, reverse active power and reverse reactive power. If you are an ordinary user, the positive active and positive reactive activities are recorded.

Active lamps represent the use of active electrical energy. Reactive power lamps represent the use of reactive energy.

First, the concept is different.

1. Active energy meter: an instrument that measures active energy by integrating active power into time.

2. Reactive energy meter: The electrical energy required to establish the magnetic field and electric field is reactive energy. The meter that records this energy is a reactive power meter.

2. The reactive power meter records the reactive power, which is the power factor of the equipment.

2. The sinusoidal multiplied by the voltage and current of the phase difference is counted as reactive power, and the reactive energy meter measures the reactive power.

Do you have any more questions?

Active activity is the amount of electrical power expended by the conversion of electrical energy into other forms of energy. Such as thermal or mechanical energy. Or rather, the power that the circuit actually consumes.

Reactive power, energy storage components in circuits, inductors and capacitors, in circuits, the power generated by energy exchange. For example, capacitors, charging and discharging generate current. But it doesn't consume power. So it's called reactive power.

Of course, the active power of the meter is to measure the active power. Reactive power is the measurement of reactive power.

Summary. Kiss the high-voltage metering three-phase meter, active and reactive power alarm lights keep flashing, the meter is faulty. Things to look out for:

1. To correctly select the required electric energy meter, the rated voltage of the electric energy meter should be consistent with the rated voltage of the load, and the rated current of the electric energy meter should be greater than the large current of the load. 2. Pay attention to the magnification of the electric energy meter. Some energy meter readings need to be multiplied by a coefficient to be the actual amount of energy consumed by the circuit.

3. The electric energy meter shall be installed by the electrician designated by the power supply department, and the user shall not open the lead seal at will after installation. 4. The electric energy meter should be installed vertically in a clean, dry, no strong magnetic field, and easy to read.

Kiss the high-voltage metering three-phase meter, active and reactive power alarm, dust stop lamp keeps flashing, the meter is faulty. Matters needing attention: 1. To correctly select the required electric energy meter, the rated voltage of the electric energy meter should be consistent with the rated voltage of the load, and the rated current of the fuel balance electric energy meter should be greater than the high current of the load.

2. Pay attention to the magnification of the electric energy meter. Some energy meter readings need to be multiplied by a coefficient to be the actual amount of energy consumed by the circuit. 3. The electric energy meter shall be installed by the electrician designated by the power supply department, and the user shall not open the lead seal with Pi Luyi after installation.

4. The electric energy meter should be installed vertically in a clean, dry, no strong magnetic field, and easy to read.

The reason why the alarm light of the meter is always on 1, the IC card meter, the electricity fee is less than 50 yuan, and the user is reminded to recharge. 2. The battery in the meter is out of power, or the battery of the motherboard of the meter has been idle for a long time, and the user needs to replace the battery. 3. Loss of pressure alarm:

When there is no voltage in one or more phases of the meter, or when it is less than 70% of the rated voltage, the meter's alarm light will flash. Users should check whether there is any problem with their own operation, and if there is no problem, check whether the line is normal. 4. Loss of current alarm:

When the three-phase voltage of the meter is greater than the critical voltage of the electric energy meter, any phase or two phases of the three-phase current are less than the starting current, or there is no current, and the load current of other phases is greater than 5% of the rated current, the alarm light of the meter will flash. The user should check whether the meter, transformer and line are faulty, and if so, the meter and transformer should be replaced and the line should be sorted out. 5. Lack of phase alarm:

When one of the phases of the three-phase power supply in the power deficit meter is powered off, the alarm light will be on. The user needs to check the line to find out the cause. 6. Voltage and current unbalance alarm:

When the three-phase voltage and current of the meter are unbalanced, the alarm light will flash. If the fluctuation of voltage and current imbalance is not large, you can ignore it, and check the circuit and electrical equipment if the fluctuation is large

Summary. Active and reactive lights flash normally. The frequency of the light flashes reflects the load. The flashing alarm light indicates that the table is faulty, as for what fault should be seen on the spot**, some are irrelevant. For example, the reverse phase does not affect the accurate measurement of active power, but it is not standardized.

Active and reactive lights flash normally. The frequency of the light flashes reflects the load. And the noisy alarm light flashing indicates that the table is faulty, as for what fault should be seen on the spot, some are irrelevant. For example, the reverse phase does not affect the accurate measurement of active power, but it is not constantly standardized.

The active indicator flashes normally, the reactive power indicator flashes rapidly, the power exceeds the normal value many times, and the active and reactive power lights flash normally. The frequency of the light flashes reflects the load. And the noisy alarm light flashing indicates that the table is faulty, as for what fault should be seen on the spot, some are irrelevant.

For example, the reverse phase does not affect the accurate measurement of active power, but it is not constantly standardized.

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The electrical energy consumed in these conversions is active energy. The meter that records this energy is an active energy meter. A: And the electrical energy required to establish a magnetic field and an electric field is reactive energy. The meter that records this energy is a reactive energy meter.

When the electric energy meter is connected to the circuit under test, there is alternating current flowing through the current coil and the 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 is also affected by the force in the magnetic field, so that the aluminum disc obtains the torque (main force Qingxiao ruler moment) and rotates. The greater the power consumed by the load, the greater the current through the current coil, the greater the power, the greater the torque, and the faster the aluminum disc rotates.

Active energy: Electrical energy can be converted into various types of energy. Such as:

It is converted into heat energy by electric furnace, mechanical energy by motor, light energy by electric lamp, etc. The electrical energy consumed in these conversions is active energy. The meter that records this energy is an active energy meter.

Reactive energy: Some electrical devices must first establish a conversion environment when doing energy conversion, such as: motors, transformers, etc., must first establish a magnetic field to do energy conversion, and some electrical devices need to establish an electric field before energy conversion.

Whereas, the electrical energy required to establish the magnetic and electric fields is reactive energy. The meter that records this energy is a reactive power meter.

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The solution of the three-phase four-wire electronic active energy meter phase failure indicator C is as follows: check whether the C phase is indeed out of voltage, if the C item loses voltage, it is easy to cause the AB lamp to be on and the C lamp is not on. It is also possible that there is no voltage input in phase C, or there is a voltage input in phase C, but the indicator light of phase C is bad and therefore not lit, or it may be that the three-phase telegraph is faulty, so the voltage of phase C cannot be measured normally.

What is going on with the three-phase four-wire electronic active energy meter phase break indicator C on.

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The solution of the three-phase four-wire electronic active energy meter phase failure indicator C is as follows: check whether the C phase is indeed out of voltage, if the C item loses voltage, it is easy to cause the AB lamp to be on and the C lamp is not on. It is also possible that there is no voltage input in phase C, or there is a voltage input in phase C, but the indicator light of phase C is rotten, so it is not lit, or it may be that the three-phase Xunpi telegraph is faulty, so the voltage of phase C cannot be measured normally.

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Three-phase four-wire electronic active energy meterA three-phase four-wire electronic active energy meter, including an electric energy meter metering unit, a voltage sampling unit, a current sampling unit and a power supply.