Mercury 230 – review of the electric meter, characteristics

The Mercury 230 meter is intended for metering all types of electrical energy in three-phase networks. It is two-tariff. Current measurement occurs via a transformer. Has the ability to transmit information through an interface via digital communication channels. It is used both in domestic buildings and in industrial enterprises and agricultural facilities. It is used both independently and in the scheme of systems for technological and commercial calculation tools.

Standard features of Mercury 230 (two-tariff)

1. Measuring and storing data on consumed electricity, as well as its visualization on the display for the following time periods:
2. From last reset;
3. Within 24 hours;
4. Within 30 days;
5. For the current year;
6. For the last year.
7. The ability to meter electricity according to two tariff plans, for four types of days and 16 time zones.
8. Ability to program monthly according to a new tariff schedule;
9. Recording the following parameters:
10. Instant calculations of any capacity;
11. Actual parameters of potential difference, phase current, angles between phases;
12. Electrical network frequency;
13. Power factors separately by phase and in total.
14. Protection control is carried out (maximum). There is a way to set the maximum allowable load power limit. If this limit is exceeded, the counter makes a note indicating the exact time value when the excess occurred.
15. The load can be controlled via a digital output.
16. The presence of event logs, the following values ​​are recorded in it:
17. The time when the meter was connected to/disconnected from the network;
18. Disappearance and appearance of phases;
19. Closing and opening the device;
20. Correction of tariff schedule;
21. Exceeding limits.

Mercury 201 and its five models

The warranty seal must not be torn off - otherwise the meter will be removed from the warranty. Optical port with electronic button function.

LAV wrote: If he agrees, do it. Fractional shares that are not subject to accounting are displayed to the right of the decimal point. Also read: installation of electrical wiring.

Scheme of a single-phase meter, when the input circuit breaker is installed after the meter. Reversal is used here, so even if you replace the phase with zero, the counter will continue to count the correct data. Difficulties with sealing. In the second case, the device model must have additional protection from rain and other natural phenomena.

Related article: Energy audit of an administrative building

Operating temperature range. If a few days after removing the magnet it does not resolve on its own, you will need to purchase a demagnetizing device. Connecting Mercury Connecting a meter There are 2 ways to connect a Mercury meter, which differ in its position relative to the machine from which electricity is supplied to the network.

Depending on the execution, there is a different price for one impulse. A lot of positive reviews indicate the popularity and excellent characteristics of this unit. There are 4 positions for connecting the wire: Supply phase from the input circuit breaker.

Main technical characteristics of Mercury 201 meters

Advantages of the device The manufacturer offers products with the following advantages: protection from external 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 individual performances; 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. It took us a long time to choose a counter for the bathhouse. The wires are connected only in this sequence. The device body is compact in size

Particular attention should be paid to the fact that this counter is quite compact.

All electricity consumers and automatic devices located below the meter in the apartment are turned off. Intervalidation interval. Depending on the configuration, these meters can be electromechanical, where a special drum is a reading device, or electronic, where all readings are displayed. Its body looks like this: In the meter panel you will find: On the front side there is a liquid crystal display, it displays all the necessary information on electricity calculation. Installation of a single-phase single-tariff meter "Mercury 201.7". Other music.

Additional counter features

Based on the modification, the device has additional functions:

• Forward and reverse metering of electricity;
• Energy metering for each phase;
• Saving an archive of received capacities at step-by-step intervals from 1 to 45 minutes. The archive storage time reaches 85 days;
• The maximum value of morning and evening power is recorded;
• Current quality is monitored;
• Losses and magnetic influence are taken into account - an entry is made in the log.

Technical data of the electricity meter Mercury 230

How long will the SEB 2a 07.212 meter last?

This device is designed to count consumed electrical energy with a frequency of 50 Hz. With its help, you can carry out metering at three tariffs, separately at night and during the day, and also depending on the power level and quality of energy consumed.

The calibration interval of the SEB 2a 07.212 meter is 10 years. The average service life before major repairs is 24 years, while the warranty period is 3 years.

Flowmeters of this class have a special interface through which communication is carried out (RS-485). Thanks to this, such devices are successfully used as part of any automated information-measuring systems.

SEB 2a 07 electricity meters have many varieties, which differ in appearance, temperature range suitable for operation of the device, accuracy class, and form of displaying readings.

Meter Mercury 230, instructions for taking readings

The display shows visual parameters: date and time (current values), frequency of the measured network, total power factor, as well as separately for all phases, maximums - morning and evening, current and voltage value at a given time, consumption of active and reactive electricity, accuracy - up to hundredths of kW/h.

To take readings, you need to select the electricity metering tariff you are interested in by time of day:

Then multiply the value to a decimal point by the cost of the tariff, add the two resulting numbers and pay.

Licenses

When checking an electric meter, it is necessary to adequately understand two points - the cost of the verification procedure and the cost of installing a new meter. In many cases, it will be easier and cheaper to install a new, more modern meter. The specialists of 10 Kilovolt LLC have the appropriate license and extensive experience in installing electrical equipment - the replacement of the meter will be carried out as quickly as possible. Call us – our specialists will be happy to answer your questions.

Electronic or electromechanical electricity meters have an individual verification period, which is indicated in the passport of the metering device. After leaving the production line (a new electric meter), it is already verified and ready for use: on average, for mechanical meters the calibration interval is about 8 years, for electronic meters - from 10 to 16 years.

The period determined by the next verification date is considered the time interval during which the electric meter readings are considered correct. Verification allows you to determine the technical condition of the meter, the degree of wear of its parts and the correctness of metering of consumed electricity.

Verification

carried out according to document AVLG.411152.021 RE1 “GSI. Three-phase static electricity meters “Mercury 230”, “Mercury 230”. Verification methodology”, approved by LLC “ITsRM” on July 16, 2020.

Basic means of verification:

— universal verification unit UPPU-ME 3.1K (registration number in the Federal Information Fund No. 39138-08);

— electronic counting frequency meter Ch3-63 (registration number in the Federal Information Fund 9084-83).

It is allowed to use similar verification tools that ensure the determination of the metrological characteristics of the meters being verified with the required accuracy.

The verification mark is applied to the verification certificate and the seal on the meter housing.

Electric meter Mercury 230 AM-1

Verification of the electric meter is the responsibility of its owner, after agreement with the electricity supplier. If the frequency (terms) for checking electric meters is met, and the consumer suspects that the meter is counting incorrectly, additional tests may be prescribed. To prevent this from happening, it is recommended to use proven models of electricity meters, for example Mercury 230 and subsequent series - our experience can guarantee this.

Additional verification of the metering device is carried out at the standardization center, and a specialist from the energy sales company must localize the latest meter readings: take current readings, draw up a report on the removal of the device and transfer payment for electricity based on average indicators.

Metering devices that have successfully passed verification are sealed: the seal of the company that carried out the verification is installed on the fastening of the casings, and the seal of the electricity supplier is installed on the cover of the terminal block. When checking the device, its compliance with the declared accuracy is revealed; for multifunctional electricity metering devices, the accuracy and its additional capabilities are checked.

Do I need to check new electric meters?

An electrical energy meter purchased from a retail chain does not require additional verification before you install it and put it into operation.

This is explained by the fact that after production, it went through all the necessary procedures at the manufacturer, which is indicated in its technical passport. But there is one exception to this rule.

If the device has been in the warehouse of a retail chain for too long, then it must be checked before installation and commissioning. For three-phase electrical energy metering devices, the period of presence in the retail network should not exceed 1 year from the date of its release, and for single-phase ones - 2 years.

If more time has passed since the release date of the electrical energy meter you purchased than stated above, then before installing it and putting it into operation, subject this device to a verification procedure.

This requirement is explained by the fact that the quality of operation of the mechanisms of this device can be significantly affected by the conditions in which it was stored. During long-term storage, these conditions are most often violated, and the manufacturer can no longer be responsible for the accuracy of the device he produced.

That is why, before using an electrical energy meter after long-term storage, carry out its verification procedure.

Trade enterprises involved in the sale of electrical energy metering devices are well aware of this feature. That is why they try to purchase these devices in small quantities, which can be quickly sold without exceeding their shelf life.

Thus, if you decide to purchase this device in a specialized store, the chances of stumbling upon an expired copy are very small. But despite this, remember this feature of these devices well and before installing them, check how much time has passed since their release.

How to correctly install and replace an electrical energy meter and remove it for verification?

Before you go to the store to buy a new electrical energy meter, contact the organization that supplies your premises with electricity.

The specialists of this organization will explain to you what specific technical conditions your new electrical energy meter must meet and will give recommendations on choosing a specific model of this device that is best suited for installation at your facility.

If you have a need to replace an electrical energy meter or simply remove it for verification, in no case should you do this without agreement with the electricity supply company.

If you carry out such actions yourself without obtaining the proper approvals, you may be subject to a fairly serious fine, since you will be considered to have consumed electricity without proper metering.

If the meter is found unsuitable for use

If the conclusion of the metrological service indicates that it is impossible to use the electric meter, it is considered unfit for use and must be replaced. Inconsistency of the device with the accuracy class, violation of tightness, etc. – means that the meter is faulty. When replacing it, an electricity meter replacement certificate , which is presented to representatives of the energy sales company during the sealing procedure. Sealing of the electric meter by the electricity supplier company should be free of charge.

Who should I coordinate with?

After it has been determined how long after the electricity meter needs to be changed as planned or a reason for early replacement has been discovered, the owner needs to decide where he will go to install it. The law does not establish strict restrictions in this matter.

Where to go to replace the light meter:

• To any specialized organization engaged in electrical installation work;
• To the management company responsible for the electrical in-house system of an apartment building;
• To a network organization, if the house is private;
• To a familiar electrician, with whom it is mandatory to conclude a contract agreement;
• Replace the meter yourself if you have the appropriate qualifications and specialized education.

When the equipment has been completely changed, the mandatory procedure is to put the new meter into operation. This can be done through your management company or energy organization. As soon as all the necessary work has been completed, the owner will be given a certificate confirming the fact of replacing the meter, signed by all parties to the procedure.

Who has the right to verify the electric meter?

A company that has permission to do so has the right to check the technical condition of the electric meter, replace it, install it and verify it. In addition to the permit, the company must have specialists capable of providing such services in a high-quality and professional manner - and our company has these qualities to the fullest extent. The tasks of our clients - installation and verification of electricity meters in Moscow and the Moscow region - have been successfully completed for many years.

According to Federal Laws of the Russian Federation No. 102 and No. 261, only verified metering devices can be used. Verification includes many important nuances that should be dealt with if you do not want to pay a fine in case of delay in the verification interval. What is the verification interval, verification, when and where to hand over your meter and is it possible not to hand over? You will receive answers to these questions in this article.

Types of counter

The manufacturer produces eight modifications of the Mercury 202 meter. The models differ only in the type of information display: a digital electromechanical device or a liquid crystal display, and functional features.

202.1

The device is designed for operation in electrical networks with a rated and maximum current of 5 and 60 A.

Equipped with an electromechanical information display device.

202.2

Permissible current load 5 and 60 A.

In this model, information is displayed on a liquid crystal display.

202.22

The modified model 202.2, the built-in modem provides remote data transmission via additional communication channels.

202.3

The model is designed for operation in electrical networks with current loads of 10 and 80 A, respectively. Information is displayed on an electromechanical digital device.

202.4

The model is designed for electrical circuits with a current load of 10 and 80 A. Information is displayed on a liquid crystal display.

202.42

Modified model 202.4 for remote data transmission, built-in modem.

202.5

Its parameters are similar to model 202.1, it differs only in the gear ratio, this parameter does not affect the accuracy of measurements.

202.6

Compared to model 202.5, it is designed for higher load currents of 10 and 80 A.

What is the verification interval and how long can it be?

The inter-verification interval is the time interval after which you will need to verify the meter, since without timely verification the device is considered inoperative, and its readings are not accepted for calculation.

For each type of electric meter, its own specific time interval is established, during which its readings are recognized as correct and valid. This interval depends on the model and type of meter, but on average ranges from 4 to 16 years. You can familiarize yourself with the verification interval in your specific case in the electric meter passport.

Peculiarities

Mercury 202, an electronic watt-hour meter for active AC energy, is designed to account for and display consumed electricity.

Single-phase, single-tariff.

Scope of application: production sites, apartment buildings, private households.

The overall dimensions of the device are comparable to the dimensions of old-style electric meters; its installation is carried out without alterations to instrument panels or measuring cabinets.

Advantages of the device:

• the design of the device is reliable and durable;
• ease of connection;
• readings are easy to read in devices with both a digital mechanical counter and a liquid crystal indicator;
• Some modifications have a telemetric output intended for remote data transmission and are used in automated systems for monitoring and accounting for electricity consumption;
• free repair or replacement of the device during the warranty period.

Operation of the Mercury 202 meter did not reveal any design flaws; the only remark is the unstable operation of liquid crystal indicators in some modifications at temperatures below -30 degrees Celsius. These deviations are provided for in the technical specifications for the meter.

Judging by the reviews, this is an accurate, reliable and durable device. Without a set of “advanced” options (for example, it cannot work with several tariffs, like a day-night meter). But at a reasonable price.

Period for checking the electric meter in the apartment

According to one of the principles of classifying meters, there are 2 types: mechanical and electronic. The first loses its relevance over time and is now mostly used in buildings of the old type. Despite its durability, reliability and low price, a mechanical counter has a number of disadvantages, the most significant of which is its low accuracy class. Therefore, today electronic meters are in great demand. Their advantage is as follows:

• the possibility of multi-tariff metering of used electrical energy;
• longer verification interval;
• compact dimensions;
• minimal error in electricity measurements due to a higher accuracy class compared to induction (mechanical) meters;
• the ability to determine the parameters of the electrical network (power consumption, voltage, phase-by-phase load current).

Depending on the phase current, electric meters are in turn divided into single-phase, two-phase and three-phase.

Verification period for each type:

For single-phase - 2 years

Connected to a single-phase network. Also, for example, you can connect 3 single-phase meters to a three-phase network. If you want to delve deeper into the theory, you can read more about the types of networks here.

For two-phase - 1 year

For three-phase - 6 months

If single-phase electricity meters are connected only to single-phase networks, now there are three-phase devices that allow you to connect not only to a three-phase, but also to a single-phase network.

Important! If your meter belongs to accuracy class 2.5 (this can be found out by looking at the passport), it must be replaced at the end of the verification interval, since in accordance with GOST 6570-96 “Inductive active and reactive energy meters” class metering devices Accuracies of 2.5 are limited to the first verification interval and their verification is not carried out again; they are subject to mandatory replacement.

Do you want to change the meter yourself? Remember that only an employee of a medical center or an accredited organization can remove the seal, after which you can begin replacing the electric meter. An example of how to replace a device yourself can be found here.

Verification period for electricity meters "Mercury"

Counters are considered the most common today. They replaced outdated mechanical devices with a rotating wheel. Since this model is most popular among the population, let’s consider the characteristics of several of its types in more detail:

Please note that the calibration interval for all five models is 16 years. In other words, 16 years after the initial verification of the meter, which is indicated in its passport, you should take steps to verify it. Read what exactly you need to do at the end of this article.

Verification period for two-tariff electricity meters

In 2022, electricity prices rose, and two-tariff meters became relevant. Despite the fact that such devices are more expensive than conventional ones, they justify their price in the future, allowing you to save on energy bills. The verification period for such meters, as mentioned earlier, depends on the model, but, as a rule, is 16 years.

Software

The meters use software built into the microcontroller (hereinafter referred to as the software).

The software is divided into metrologically significant and metrologically insignificant (application) parts, which are combined into a single file that has a single digital identifier (CRC16 checksum).

The software can only be tested, installed or reinstalled at the manufacturer and cannot be read from meters. Software identification data is given in Table 3.

Table 3 — Meter firmware identification data

The design of the meters eliminates the possibility of unauthorized influence on the software and accumulated measurement information. The level of firmware protection against unintentional and intentional changes is “high”, in accordance with the recommendations of R 50.2.077-2014.

Features of meters with large calibration intervals

The electronic meter, which has some operating features, has the largest calibration interval. Its design includes non-volatile clocks and counting elements that save data in the event of a power failure. Thanks to this, when turned on after an emergency blackout, all information about the level of electricity used will not be reset to zero. Also, these devices have their own software that automatically adjusts the time, which is important when using several tariffs. Such devices also have protection against unauthorized access, which records such attempts in the event log.

Important! Remember that your electricity meter is not the CSM’s problem, but yours and only your concern.

Responsibility for its performance falls on your shoulders. Therefore, the question often arises: what to do if the verification interval has expired?

Type approval mark

applied to the meter panel by printing or laser marking or in another way that does not degrade the quality, as well as on the title pages of operational documentation using a printing method.

Table 30 — Completeness