Review of single-phase electricity meter Mercury 201 - connection diagram

The Mercury 201 meter is a single-phase, single-tariff device for determining consumption indicators for active electrical energy and power parameters of variable two-wire networks. The product is suitable for use by individuals or companies for the purpose of individual commercial or organizational metering of consumed electricity, provided that it is installed in a protected area.

Meter type – Mercury 201

Design and principle of operation

The body of the electric meter, consisting of a base, main and terminal covers, contains the following components:

• terminal strip with shunt;
• an electronic unit, including a power circuit, a removable battery, built-in memory, a pulse output, a control element;
• built-in modem for remote data transfer (for versions with LCD);
• liquid crystal display or mechanical calculating device (depending on modification).

The design of the meter is Mercury 201, in order to finally disassemble the meter you need to unscrew the screw shown by the arrow

The electrical energy passing through the device circuit is recorded by an electronic board, which, after processing the signal, displays data on the screen or reads it on a mechanical display. At the same time, the information is recorded by the telemetry system and transmitted to a modem connected to a remote monitoring device.

The lineup

The device is a modern single-phase electric meter. Designed for use in the residential sector of household accounting. This is the most common single-tariff meter. It is created by . The series is represented by some modifications. There are 2012, 2014, 2015, 2016, 20122, 2022 and 2022 models.

Electric meter Mercury 201 is one of the most popular

The company develops and produces electronic single-line metering devices with energy resources and an automated conditional metering system. At the moment, more than 120 metering modules are supplied with a high-quality autotransformer, inductor, inductor, electric and magnetic winding, which can be designated differently.

Note! The difference lies in high reliability, functionality, quality and a modern graphic design element.

Technical characteristics of Incotex meters

Specifications

Overall dimensions of the meter - Mercury 201

How to connect the Mercury-201 meter (video)

Electric meters Mercury of the first series are the most common today.
Meters have many advantages, including their availability and ease of connection. You can connect the metering device correctly by following the above tips and step-by-step instructions. In addition, you can try to “deceive” the meter by twisting the readings or stopping it. But remember that such activities are illegal and, if discovered, can lead to severe administrative penalties. The matter is not difficult if you understand at least a little about electricity. The single-phase electricity meter "Mercury 201" is considered the most common energy metering device in Russia today. Counters of this brand replaced more outdated models equipped with rotating disks. Installation of electricity meter Mercury 201.8

can be made on a DIN rail, the back wall of an electrical panel using an adapter plate that is attached to a DIN rail. It should also be taken into account that since 2015, the adapter plate is not included in the standard package of the Mercury 201 electric meter.

The contact screws must be tightened with sufficient force to ensure good contact. If the wire in the terminal is poorly secured, this can lead to heating, destruction of the insulating layer and short circuit. The terminal cover of the electric meter has a perforation - it must be removed (using pliers or carefully broken off) so that the cover fits tightly to the meter. The lid is screwed to the body. The Mercury 201 electricity meter is suitable for installation in apartments, private houses, garages and gardens. The warranty on the device is 3 years, the service life of the Mercury 201 electric meter is designed for 30 years. When replacing an electric meter, you need to notify the energy sales company, and after installing a new meter, seal it together with their representative. As a rule, this takes time, in addition, you need to wait for the person and waste your time.

Device warranty

The manufacturer accepts the product for warranty repair if, within 3 years from the date of installation or after 42 months from the date of production, a failure occurs due to a manufacturing defect.

The consumer or trade organization providing the product for warranty service must attach the device passport. If traces of mechanical damage or the results of improper connection and operation of the device are detected, the manufacturer withdraws its warranty obligations.

Self check

You can check the meter yourself using a current clamp meter. This is a professional tool for constant checking. Needed to see if there is any electrical current leakage and if a short circuit may occur.

Note! As a rule, instructions for its use are included with the device.

Self-check of the meter

In general, Mercury 201 is not just one electric meter. At the moment there is a large range of similar equipment. They have their own characteristics and connection diagram. The most important thing is to read the instruction manual and follow it when connecting and operating the equipment.

Advantages of the device

The manufacturer offers products with the following advantages:

• protection from outside influences;
• attractive design of the case and screen;
• compact dimensions;
• convenient installation - the kit additionally includes an adapter bracket for easy installation of the product on mounting bolts from meters of obsolete brands;
• the ability to remotely transfer information and connect to third-party devices (for certain versions);
• the presence of an alarm system notifying about the intensity of electricity consumption;
• affordable price;
• compliance with established state standards for measurement accuracy;
• function of recording basic characteristics in the built-in memory;
• energy independence due to the presence of autonomous power supply;
• durability and long intervals between verifications.

Connecting Mercury 230 via current transformers

The electric meter is connected via current transformers using a ten-wire cable. This helps to replace and check the connection circuit of the device, allows you to determine the error in measurements directly at the installation site of the electric meter in the presence of load current without disconnecting consumers.

Next, the old meter is dismantled.

The two remaining contacts are attached in the same way.

Data from the transformer terminals is sent to a metering device that records the amount of generated electrical energy. One of them is connection through ten separate conductive wires. As a rule, voltage circuits are made with the same cross-section as current circuits. As was written above, metering circuits must be connected to clamp assemblies or test blocks, so what is a test block?

Types of counter

The manufacturer produces this model in six versions:

• 201.2 – modification with a liquid crystal display, constant value – 6400 pulses. per kW*h and the value of the operating (limit) electric current, respectively, 5 (60) A;
• 201.4 - current parameters differ from the previous version, amounting to 10 (80) A;
• 201.5 - current characteristics are similar to version 201.2, but instead of an LCD, a roller mechanical display is installed, and the constant is half as much;
• 201.6 – a complete analogue of the previous version, with current parameters identical to model 201.4;
• 201.7 – similar to model 201.5, differs in the design of the housing;
• 201.8 – version with a current value of 5 (80) A, constant – 5000 pulses. for kWh and LCD.

Characteristics of varieties of Mercury 201

In addition to the specified features, all versions are manufactured with accuracy classes 1 and 2 and are assembled in 4 housing options.

Completeness

The delivery set is shown in Table 4.

Table 4

Replacing the battery

The device's autonomous power supply is installed inside, under the main housing cover. Depending on the design of this structural part, it is removed after unscrewing two screws or releasing the latches.

The battery is designed to last at least the duration of the verification interval, so it must be changed during the verification process. The case cover is sealed, so the user will not be able to get to the battery on his own.

After removing the cover, the old battery is removed and a new one is inserted in its place, with a similar arrangement of positive and negative poles.

Connecting the meter

Before connecting the device, the power supply is turned off. The product is mounted on a DIN rail, the terminal box cover is removed, and the wires are connected according to the diagram presented in the passport documentation. Additionally, the circuit is made on the terminal cover.

Meter connection diagram - Mercury 201

For models with LCD and modem, additional configuration of the product software will be required.

An electrician with an electrical safety group of third and higher is allowed to perform work.

After connection, a corresponding entry is made in the passport column about putting the electric meter into operation.

The single-tariff meter Mercury 201 is designed for commercial metering of active electrical energy at a network voltage of 230 V and a frequency of 50 Hz. The device provides registration and storage of electricity readings and is convenient for installation in an apartment, garage or country house.

Taking readings

To take readings, the consumer must:

Taking readings from the meter - Mercury 201

1. Write down the number (circled in blue in the photo) indicating the integer value of kilowatt-hours from the liquid crystal display or roller display (depending on the modification). Fractional shares that are not subject to accounting are displayed to the right of the decimal point. For versions with LCD there will be two of them, for a mechanical scoreboard there will be one, made in red.
2. Previous readings are subtracted.
3. The result is multiplied by the cost of one kilowatt-hour.

Connection diagram

The Mercury 201 brand meter is connected without any special features, similar to other electrical energy metering devices. The device comes with detailed instructions that need to be studied, along with a passport and connection diagram

The main thing is the correct connection of the phases and attention when connecting the wires (their markings are highlighted in different colors)

Before connecting Mercury 201, it is necessary to de-energize the system: turn off the machine, switch, and supply line. For safe laying of wires, special cells with perforated grooves are provided on the terminal cover. In these places, the cells are broken out, and a wire is inserted through the holes.

There are 4 positions for connecting the wire:

1. Supply phase from the input circuit breaker.
2. Phase load on the room power supply.
3. Neutral wire from the input machine.
4. Neutral load wire to power the room.

The wires are connected only in this sequence. It should be remembered that the phase wire is white and the neutral wire is blue.

For ease of use, the connection diagram for a single-phase meter of the Mercury 201 model is duplicated on the inside of the terminal cover. If the device is connected correctly, the red indicator light on it lights up.

Before closing the cover, you should again check the correct connection, paying attention to the tightness of the connections: when tightening the clamps, the insulation should not come into contact. If this happens, it may gradually melt when the meter is under load

The cover should be screwed tightly to the body, leaving no gaps.

For reliable and safe operation of the Mercury 201 meter, it is recommended that the connection be made through circuit breakers using an RCD - residual current device. It should also be installed in the shield. To avoid problems with operation, the cross-section of the wires must correspond to the rated current of the meter

You also need to pay attention to the correspondence in power and diameter

Before installing the meter, you need to check its compliance with the requirements of regulatory documents. The passport must indicate:

• accuracy class;
• dates of manufacture and verification;
• registration number in the State Register of Measuring Instruments.

It is necessary to check the presence of a warranty seal and a hologram confirming the authenticity of the device.

Watch this video on YouTube

If you carefully study the diagram, follow the sequence of actions, and safety rules, you can install the Mercury 201 electric meter yourself. Then call an employee of the energy company to check the correct connection and sealing of the device. The peculiarity of this process is that the holes for filling are too small and it is difficult to insert wire into them. Fishing line is not suitable for this, so only wire seals are used.

You should pay attention to the date. On meters of the Mercury 201 model, as well as on other control instruments and devices, seals with the stamp of the state verifier no older than 2 years are installed.

The disadvantage of the device design is the difficulty of visual inspection of the seal, because it is located under the terminal block cover. Difficulties also arise when using seals in the form of stickers. This is prevented by an unsuccessfully located fastening screw.

The Mercury 201 model meter provides several options for displaying readings depending on the design of the device. There are more displays on the LCD screen and they are more informative. In addition to data on the electricity used, the date, current and voltage indicators, operating time since commissioning are displayed.

Before taking readings from Mercury 201 with a drum-type reading system, you need to remember that only whole data is taken from settlements with the energy supply company. The device has 6 reels, 5 of which show integer values ​​(they are black and located on the left), and 1 - tenths (it is black and located on the far right). This is done for visual convenience when taking readings.

The device is verified at the manufacturer immediately after assembly. The fact of the procedure is noted in the passport and on the seal. The next verification period for the Mercury 201 model meter is in 16 years.

Review of three-phase electric meter brand Mercury 230

Review of the single-phase electric meter Energomer CE 101

How to choose the right one and which one is better to install an electric meter in an apartment

How to change the electricity meter in an apartment or private house?

How to seal electricity meters - application, how much it costs, penalty for removal

What to do if the electric meter in your apartment stops or breaks down?

Official forum – Energomera JSC

Top Question: Hello. From April 15, the analogue signal will be turned off in the Moscow region. Question: will the common house antenna receive a digital television signal? If not, what should residents do at 42 Molodezhnaya Street? Answer: Good afternoon!

This information for residents will be posted on information boards in residential buildings. Sincerely, Ch. Obzhirin Top Question: Hello! I don’t use a TV antenna, but I regularly pay 95 rubles a month.

I am disabled and have limited mobility and cannot come to you. What do I need to do to get this payment removed from me? Please send your answer to my email address. Sincerely! Answer: Dear Sergey Alexandrovich! Odintsovo, st. Novo-Sportivnaya village Obzhirin Tel. How do you deal with persistent defaulters? My neighbors have not paid for housing and communal services for half a year or more.

What measures are taken against them? The question is very serious. Based on the decisions of the courts, the Federal Bailiff Service carries out collection from debtors by seizing current accounts.

The electricity meter does not show “signs of life” - the red light does not blink. Electricity meters are located in the entrance and were replaced with new ones this year.

Where should I go to have my meter checked? Answer: Dear Alexander! Replacement of apartment electricity meters in apartment buildings in Odintsovo in Odintsovo M. Odintsovo st. Soyuznaya d.

Expert opinion

Viktor Pavlovich Strebizh, lighting and electrical expert

Any questions ask me, I will help!

Such single-tariff devices are used in residential premises, offices, public buildings, and commercial facilities. If there is something you don’t understand, write to me!

Energy meter CE 101 S6 145 M6 5(60) A

The dimensions of the meter are compact; full information about the product is contained on the box and in the operating instructions. The package includes a couple of spare seals, be sure to check the acceptance certificate. The meter monitors the energy consumption consumed simultaneously by all devices.

The Energomer CE 101 body is made of durable plastic. It contains a printed circuit board, on which the electrical part of the device is assembled and a counting mechanism is attached. At the top there is a window for displaying readings. The number of sections in the counting mechanism is 5. There are LEDs - they determine the light voltage and analyze the network loads.

Advantages:

• 1 accuracy class;
• presence of light indication;
• durability and warranty;
• quick easy installation;
• Availability of network frequency tolerances.

Flaws:

• They are not here.

Primary requirements

You cannot joke with the seal - one of the first rules. If the device body or sight glass is accidentally damaged, further operation is undesirable - during a control check by energy supervision specialists, the incident will be considered an attempt at fraud. Mercury meter connection diagram

The results of electricity metering are displayed on a liquid crystal display. Recommendations for installing automatic machines Let's consider in more detail how to connect an electric meter and automatic machines: to protect the measuring device from overvoltage in the network, automatic machines are installed before entering the line into the meter; if the machines are installed after commissioning, if there are significant voltage fluctuations, the device will simply fail; According to regulatory documentation, only one circuit breaker is allowed to be installed per phase wire, but if possible, it is preferable to install a two-pole one, which will cut off both the supply and the neutral.

Next you need to check how the device works. Phase conductors are connected to two contacts - input and output, and the same neutral conductors are connected to the other two. However, energy sales companies allow its use only if it is possible to seal the automatic device.

Electrical installation rules stipulate that the meter must be connected after the machine. Connection requires opening the terminal box. Indeed, early modifications of the series had such a drawback.

According to preliminary estimates, the device can function normally for at least 30 years, subject to operating conditions. The metering device is made in a plastic rectangular case. The photo shows a copper wire with a cross section of 2.5 mm2. After them, neutral conductors are connected.

The cover itself is mounted on the body as tightly as possible. If the input cable goes directly to the meter, disconnect the supply line. This will help in solving the problem of how to connect a Mercury counter. The only thing available to it is time adjustment; it will not be possible to bypass this limitation.

That is why we post several reviews from real customers who share their opinions regarding this unit. The first option is used to connect any of the two types of devices, both single- and three-phase, the second - for a device with three phases with a load of 60 kW and above. The device itself must be sealed by the manufacturer. This circuit is quite simple and easy to understand by a user with minimal knowledge of electrical engineering.

Currently, Incotex has stopped producing devices operating on the induction principle, so only electronic modules are available for purchase. The metering device is characterized by compact overall dimensions and light weight. But it should be noted that if you were able to install the Mercury meter with your own hands, then after that you need to invite a representative of the electricity supplier to check the quality of the installation of the meter and its sealing. The lower part of the meter housing is removed and provides access to the device contacts. All electrical experts recommend connecting any model of electric meters through circuit breakers, as well as using residual current devices (RCDs). Secrets of high-quality electrical installation. Assembling a distribution board FROM and TO with your own hands

Typeit NEVA 103 1S0 230V 5(60) A 5(60) A

Single-phase single-tariff device with a mechanical dial. The maximum current is 60 A, voltage is 220 V, accuracy class is first. Installation is quick and convenient - on a Din rail. Additionally, there are latches that do not break during operation.

The dimensions of the Typeit NEVA 103 are modest, which is, of course, a plus; the dial includes 7 fairly large numbers. The readings are not saved, which, of course, is inconvenient in case of network failures. If the readings are incorrect, during sealing the calculations will be performed based on average indicators. The maximum operating time is 280,000 hours on average. The warranty period from the date of creation is 7 years. The average service life promised by the manufacturer is 30 years.

Advantages:

• affordable price;
• maximum reliability;
• ease of installation;
• a complete list of guarantees;
• convenient fastening of wires.

Flaws:

• According to reviews, marriage sometimes happens.