Interverification interval (MPI) of electricity meters - table of timing for verification of electricity meters in Russia by model

What is MPI and is it necessary to verify electricity meters by law?

Inter-verification period (ICP) is a period of time after which the consumer needs to check the electric meter. If this requirement is ignored, the IPU goes into the “non-working” category, and the readings transmitted from it cannot be accepted for settlement transactions.

Each type of device has a separate interval within which the information is recognized by the power supply organization as relevant. With regard to resource consumption, verification in apartment buildings and private households, it is necessary to rely on the following regulations - federal laws No. 102 and No. 261.

However, from June 1, 2020, premises owners are exempt from the need to:

• use IPU;
• transmit information about metering devices when they fail;
• install equipment.

Due to its malfunction or the end of the inter-verification period, the RSO or service company is obliged to restore the resource supply by installing a new device.

Watch the video: “What to do if the verification period for the electric meter has expired. How to avoid fines."

Who should carry out scheduled verification

Verification of electricity meters without removal is carried out by special enterprises:

1. State The metrological institution is authorized to carry out diagnostics of all types of meters.
2. Private companies analyze and evaluate the electricity consumption monitoring device subject to certification. A license can be requested before concluding a contract. The document is issued by the Federal Service.
3. Organizations serving an apartment building, if there is a certificate of admission to these types of services.

When a citizen applies for diagnostics to a non-state enterprise, it is necessary to check the accreditation certificate for expiration date. Concluding a contract for the provision of services is a mandatory condition. In this case, the text of the document must include information that the company will carry out interval verification of the electricity meter. If you refuse to prescribe such a clause, experts recommend turning to another contractor.

The apartment owner also needs to take into account that in most cases the procedure is carried out with the removal of equipment. In view of this, the owner of the premises is obliged to send a notification to the management company or RSO about the upcoming work, since during this process the seal is destroyed. Such actions are allowed to be carried out only after the official recording of the testimony. Otherwise, the enterprise or management company has the right to review the procedure for calculating fees for the consumed resource during the specified period.

How to find out the verification period for an electricity meter.

Verification of electrical energy metering devices

Checking the electricity meter - determining the error of its measurements. Verification must be carried out several times during the entire service life of the metering device.

There are three types of verifications:

• primary – carried out one-time by the manufacturer (or when importing the electric meter into the country where it is intended to be sold and operated); during this verification, the performance of the metering device and compliance of the measurement accuracy with the declared class are determined; the date of this check is always indicated in the technical data sheet of the device;
• periodic - carried out by the metrological service or another licensed body after the expiration of the verification interval, regardless of whether the meter was working or stored in packaging, in order to assess the level of wear of the device and the ability to provide readings with an acceptable error;
• extraordinary - carried out before the time of periodic verification due to lack of confidence in the sufficient accuracy of the readings, loss or loss of a technical passport with data on previous verifications, etc.

The essence of the verification is to compare the readings of the meter installed in the apartment with the readings of the reference meter and calculate the error in the readings of the first of them. If the error determined by this method does not exceed the permissible accuracy class, the electrical energy meter is considered suitable for use. If the value of a certain error exceeds the permissible limit, you will need to replace the electricity meter in the apartment.

Checking the induction electric meter

Upon completion of the check, a seal is placed on the body of the metering device indicating the quarter and year of verification to determine the date of the next one. Also, a note about the verification date is placed in the technical passport of the electric meter, or the owner is issued a verification certificate.

Let us repeat, since this procedure is carried out exclusively by the metrological service or specialists accredited by it, you can only verify the electricity meter at home by contacting the specified organizations. It is not possible to operate meters that have not been verified on time, since the readings from such metering devices will not be taken into account when issuing utility bills.

How to find out the verification period

You can determine the expiration date of the verification interval through the meter’s data sheet. Russian legislation establishes that correct accounting of the use of a resource is possible only if there are technical documentation or a certificate. These papers confirm that the device complies with state standards.

After verification, information about the date and responsible person, including factory control, is entered into the product passport. The official paper also states when an inter-verification analysis needs to be done. The time depends on the type and model of the device.

As a rule, modern devices need to be checked once every 16 years, old models - every 8.

How to find out the verification period if your passport is missing

If you do not have a technical passport and suspect that the verification period has expired, you must visit the official website of the RSO for the region. The portal contains the telephone number of the Energosbyt branch, by calling which you can find out the necessary information regarding the address of the facility.

Do I need to check a new electric meter?

New electric meters are also subject to state verification for accuracy of data transmission in accordance with the classification of the device. This is due to the fact that single-phase devices should be stored in a factory or store for no more than two years, three-phase devices - 12 months. The expiration date should be checked at the time of purchase.

Types of verifications - table

According to Gosstandart, the electric meter verification period is presented in three types:
Table 1.

Kinds

Checking the electric meter can be planned or forced. It is performed by using a tester, current clamps or incandescent light bulbs. Needed to establish the theft of electrical energy or the incorrect operation of the device. The readings are taken by the owner himself or a competent representative of the service organization.

Types of checks

Primary

The initial check of the metering device is carried out at the factory, before the user installs it and begins to use it for its intended intended purpose. It is an inspection of the device for operability and compliance with standard metering values. During the initial inspection, actual defects are considered before import into the country.

Periodic

Periodic checks are carried out by a metrological organization. It identifies the probability of issuing meter readings and the permissible error.

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Extraordinary

An extraordinary check of the system is carried out between periodic diagnostics when equipment is repaired, there is a need to replace the electric meter, loss of technical documentation and doubts about the correct operation.

The nuances of conducting an extraordinary inspection

Frequency of verification of electricity meters in Russia by model - table

The frequency of MPI is set at the factory and calculated depending on the type of mechanical device. Most often, devices are provided with an interval of 6-16 years. More precise deadlines are specified in the technical data sheet of the product, endorsed with the manufacturer’s seal. A seal installed on the device body serves as confirmation of the verification of the IPU.

The MPI depends on the characteristics of the equipment used. The regulations regulate the frequency of control for induction mechanisms - no more than 8 years, for electronic devices - a maximum of 16.

The calibration interval of electric meters in the table is presented depending on the brand of equipment:

Table 2.

It is noteworthy that the population pays for such procedures on their own, regardless of the form of ownership - apartment or private household. This is due to the fact that the electric meter does not belong to the general property of the apartment building and is not an element of engineering communications. Accordingly, the service organization is not obliged to monitor the operation of the device free of charge. However, such services are cheap for beneficiaries or residents of municipal premises.

Note: when purchasing an electric meter, experts recommend choosing devices no higher than the second accuracy class. In addition, you need to take into account the period during which the factory verification was carried out: three-phase models - up to 1 year, single-phase - 24 months. During calculations, you need to take into account when the IPU will be installed.

Calibration interval of mechanical and electronic meters

What is the deadline for MPI? This depends on the specific model. You can find it in the tables below.

Single-phase meters

Three-phase meters

Verification nuances

When installing a device for metering consumed utilities, it is necessary that the owner of the facility trusts the IPU, as well as the RSO. Based on this information, the institution will issue invoices for payment.

Thus, all parties to this process must be confident in the correctness of the transmitted evidence. In view of this, when purchasing and installing a meter, experts recommend finding out about the presence of a certificate and accreditation from the manufacturer. Direct installation should be ordered from authorized companies.

The calibration interval of the electric meter has features depending on the installation location - a private household or an apartment in an apartment building.

Watch the video: “Checking electricity meters. How to save money and time."

In a private house

Often in private households, meters that monitor energy consumption are installed on the street. However, this is not a basis for refusing to provide evidence, verify the IPU or agree with the issued receipts.

It is noteworthy that the more complaints the owner sends to the RSO, the more correctly settlement transactions are carried out. But in order to make claims against the company, you must, on your part, comply with the assigned responsibilities, namely: check electricity meters on time.

In addition, the owner of the house must provide RSO employees with the opportunity to:

• verify readings;
• control the integrity of the seal;
• keep honest records within the framework of the law.

Requirements from RSO are also imposed regarding the location where the electric meter will be located. In particular, they relate to compliance with temperature conditions and humidity levels.

In the apartment

The owner of the apartment is not obliged to independently verify electricity meters. Such procedures are carried out by the RSO or the company servicing the apartment complex, according to the established tariff. Directly taking readings and monitoring the performance of the device is free of charge. Analysis of the technical parameters of the IPU costs money - it takes into account the period and current standards.

At the installation site without removal

Important elements on the electric meter.

Verification of the electric meter without removal is carried out by a device for testing and comparing the measured energy due to the frequency of pulse outputs.

The consumer sends an application to a metrological institution or an accredited company to carry out maintenance of the IPU without dismantling. According to the received request, an employee of the organization comes to the address with the appropriate equipment. Experts recommend submitting an application 1.5-2 weeks in advance to avoid missing the verification interval.

Thanks to the mobility of the system, companies can check without removing the device. The equipment used allows you to analyze resource consumption with an error below 0.01%. The devices used are single-phase and multi-phase, low or high power.

Calibration equipment analyzes the operation of individual elements of the IPU. This allows us to identify the correct distribution of errors among parts of the mechanism. The result of the work is influenced by the ratio of the test load on all meter sensors.

In other words, if the indicators are not the same or have inaccuracies, then there is a significant error in the operation of the electrical appliance. In this case, a malfunction is diagnosed and the owner needs to install a new electric meter.

Electric meter verification procedure

The verification period for the electricity meter is controlled by the owner of the apartment or private house. The obligated citizen must independently agree on the date of transfer of the device for diagnostics and deliver the IPU to the address of the metrological center. However, at the legislative level, conducting verification without removal is an acceptable procedure if the contractor has accreditation.

Step No. 1: Analysis of the correct connection of the electric meter

The use of a control device depends on the type of IPU and the number of phases. On the diagram this can be reflected as two connected inputs - zero and phase, as well as the point of connection with the load circuit.

The controller can diagnose problems with the electric meter by identifying additional sources of connection to the network. In the second case, suspicion may be caused by a violation of the connection sequence.

Deviations from the norm are grounds for additional verification, since such cases often indicate theft of resources through unauthorized connection. The correctness of the connected individual energy consumption device is carried out by simple inspection.

Step #2: Self-propelled research

The concept of “self-propelled” meter means circumstances under which the device disk rotates without additional load, i.e., on its own and at the same time all electrical appliances are de-energized. After turning on all the diverter automation, the controller observes the movement of the mechanism for 7-10 minutes.

If the device is working properly, then rotation will not occur, and the indicator will not show more than one pulse. In the opposite situation and a flashing sensor, the procedure ends with re-verification or installation of a new IPU.

Step #3: Gear Ratio

The gear ratio is set on the external panel of the electric meter. The coefficient provides information to the consumer and the RSO about the number of revolutions or blinks - the type of reading depends on the type of device.

How to understand that it is time to replace the meter.

Based on the rotation of the disk or electronic indicator, the consumed resource is calculated. In other words, these figures act as indications for calculating electricity - 1 kilowatt is equal to the approved tariff in the region.

Step #4: Establishing the error

Another necessary stage of conducting an inter-interval check of the electric meter is error diagnosis. The event is conditioned by establishing the correctness of the transmitted readings.

Step #5. Detection of meter magnetization

A pressing question for consumers is how often the electric meter is checked for magnetization. The topic is of interest to those property owners who have an old-style disk device installed. The new generation of IPUs are created on the basis of induction and have a protective seal that changes color when interacting with a magnet. Verifications of this type are required by the RSO to be carried out no more than once every six months.

An analysis of the magnetization of an individual consumption device can be carried out using a regular needle - if it is attracted to the equipment, then, therefore, the IPU has a strong magnetic field. It is noteworthy that such circumstances work both to the consumer’s advantage and to the disadvantage. That is, prohibited devices will not slow down, but, on the contrary, will accelerate the rotation of the disk, which means the owner will pay more.

Verification period

The timing of verification of electricity meters depends on the specifics of the procedure, i.e. whether the IPU needs to be removed or not. In the first case, a thorough diagnosis and issuance of a result on the possibility of operation will be required. This procedure can take several hours or 2-3 days.

If the inter-verification analysis does not require dismantling the electric meter, then the defining parameters are:

• diagnostics of the nominal voltage in the network - takes about 15-20 minutes;
• checking the fact of “self-propelled” – this will take 10-20 minutes;
• 10 min. an inspection is performed to ensure that there are no physical defects on the IPU;
• additional time is spent completing the report on a special form and sealing the meter.

What documents are issued after verification - types of marks in the act

Calibration interval of the Mercury meter.

If the verification interval of the electric meter expires, then it is necessary to submit an application to the state metrological center or a private company. In the document about the certified device, the employee of the institution is obliged to put notes not only about the fact of diagnostics, but also to reflect the dismantling and installation of the IPU.

According to regulatory provisions, legal removal of the device is carried out by RSO employees.

An employee of the institution is authorized to carry out the following activities:

1. Comparative analysis of current electric meter readings.
2. Preparation of documents for dismantling IPU.
3. Initiate the transfer of settlement transactions from the amount of consumed resources according to average standards.

Removal and installation of equipment is also carried out by employees of an energy-saving institution. After installation of the resource metering device, sealing is carried out. Such operations are permitted by accredited persons. Violation of the control label is subject to administrative penalties.

After replacing the IPU, if necessary, an act is generated. The document is endorsed by two parties - the owner of the premises and the contractor.

The paper must be drawn up reflecting the following information:

• address of the property where the work was carried out;
• technical parameters of the removed and installed device;
• date of procedure;
• the day of verification of old and new equipment;
• indications;
• the number of unaccounted resources at the time of the absence of the IPU;
• reasons for replacement;
• data of the company that carried out the maintenance of the electric meter, including details.

In case of installation of a new individual metering device, it is necessary to draw up an act in two copies. One copy remains with the apartment owner, the second is transferred to the RSO. If only verification was carried out, then the date is stamped on the seal and is additionally displayed in the technical passport. The next verification interval will be counted from this day.

According to current laws, an employee of the organization must also reflect in the documents the identified shortcomings and errors in the transmitted readings. Correct operation of the equipment depends on the type of device being used and ranges from 6 to 16 years.

Meter installation

Connecting the energy meter is not a problem, since it requires connecting two wires to the screw terminals. The possibility of additional connection of transformer equipment is not provided.

CO-2 connection diagram

Installation of this device is currently impossible, since the accredited organization that took over the installation work may lose its license for violating the requirements for modern equipment. And legal private connection is prosecuted by law.

Who pays and the cost of checking the electricity meter

The owner of the property independently bears the burden of expenses for servicing the electric meter.

This applies to the following activities:

• dismantling;
• transportation;
• diagnostics;
• installation;
• installation of a seal.

The cost of checking the electric meter will depend on its type and model.

The table shows the estimated cost of the service:

Table 3.

It is noteworthy that private companies offer additional services so that the consumer does not overstay the verification interval.

For example:

• diagnostics within 5 days leads to an average price increase of 20%;
• if similar work needs to be completed in 3 working days, then by 50%;
• high urgency of the event leads to the establishment of a premium of 100%.

Free verification

Free verification is available to citizens who have entered into a social tenancy agreement or to users of municipal housing.

What to do if the MPI has expired

How to understand that the meter needs to be replaced.

If your electricity meter has expired, you need to contact your utility service provider. A written notification is drawn up about the need to diagnose IPU. During device research, fees for resource consumption will be charged based on average indicators.

If the IPU is not verified and installation is not carried out within 3 months, then receipts will be issued in accordance with the standards relevant in the consumer’s region of residence. Each subject of the Russian Federation has separate regulations for such cases. Experts recommend purchasing a new sealed electric meter, since in most situations, after diagnostics, the non-working state of the old IPU becomes clear.

Advantages of the device

The advantages of the product are as follows:

• very low price;
• extra long service life, verified in fact;
• durable housing;
• the ability to replace worn parts and their quality;
• ease of data collection;
• presence of protection against magnetic influence (for modification 2M).

There are also a lot of disadvantages, but a device with such a history cannot but have them. Large dimensions are not the most significant drawback compared to reliability, which has successfully passed the test of time.

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