Infoteenus
17 METROLOOGIA JA MÕÕTMINE. FÜÜSIKALISED NÄHTUSED
Uued standardid
IEC TS 61340-5-4:2026
Electrostatics - Part 5-4: Protection of electronic devices from electrostatic phenomena - Compliance verification
Käsitlusala: IEC 61340-5-4:2026 describes compliance verification testing for technical items included in ESD control programs, such as those specified in IEC 61340-5-1.
Test methods are based on those specified in IEC 61340-5-1 and other parts of the IEC 61340 series and are simplified, where appropriate, for the purposes of compliance verification.
This document describes compliance verification procedures intended for use by competent personnel familiar with the operation of test equipment and knowledgeable about the ESD control items being verified.
Organizations can, by reference to this document in their compliance verification plan, adopt the necessary compliance verification procedures described herein without change or addition. Alternatively, compliance verification procedures described in this document can be adapted to match the organization's ESD control program requirements, provided deviations in test equipment and compliance verification procedures are documented in their compliance verification plan.
Product qualification is excluded from the scope of this document.
This edition includes the following significant technical changes with respect to the previous edition:
a) significant new revision;
b) document has been updated and reformatted.
Test methods are based on those specified in IEC 61340-5-1 and other parts of the IEC 61340 series and are simplified, where appropriate, for the purposes of compliance verification.
This document describes compliance verification procedures intended for use by competent personnel familiar with the operation of test equipment and knowledgeable about the ESD control items being verified.
Organizations can, by reference to this document in their compliance verification plan, adopt the necessary compliance verification procedures described herein without change or addition. Alternatively, compliance verification procedures described in this document can be adapted to match the organization's ESD control program requirements, provided deviations in test equipment and compliance verification procedures are documented in their compliance verification plan.
Product qualification is excluded from the scope of this document.
This edition includes the following significant technical changes with respect to the previous edition:
a) significant new revision;
b) document has been updated and reformatted.
Alusdokumendid:
ISO 9053-1:2026
Acoustics — Determination of airflow resistance — Part 1: Static method
Käsitlusala: This document specifies the measurement of the determination of the static airflow resistance (see also References[1]and2) in a laminar flow regime, of porous materials for acoustical applications.
Alusdokumendid:
Asendab: ISO 9053-1:2018
ISO 1938-1:2026
Geometrical product specifications (GPS) — Dimensional measuring equipment — Part 1: Plain limit gauges of linear size
Käsitlusala: This document specifies requirements for the most important metrological and design characteristics of plain limit gauges of linear size.
This document defines the different types of plain limit gauges used to verify linear dimensional specifications associated with linear size.
This document also defines the design characteristics and the metrological characteristics for these limit gauges as well as the new or wear limits state maximum permissible limits (MPLs) for the new state or wear limits state for these metrological characteristics.
In addition, this document describes the use of limit gauges. It covers linear sizes of up to 500 mm.
This document defines the different types of plain limit gauges used to verify linear dimensional specifications associated with linear size.
This document also defines the design characteristics and the metrological characteristics for these limit gauges as well as the new or wear limits state maximum permissible limits (MPLs) for the new state or wear limits state for these metrological characteristics.
In addition, this document describes the use of limit gauges. It covers linear sizes of up to 500 mm.
Alusdokumendid:
Asendab: ISO 1938-1:2015
Asendatud standardid
ISO 1938-1:2015
Geometrical product specifications (GPS) -- Dimensional measuring equipment -- Part 1: Plain limit gauges of linear size
Käsitlusala: ISO 1938-1:2015 specifies the most important metrological and design characteristics of plain limit gauges of linear size.
ISO 1938-1:2015 defines the different types of plain limit gauges used to verify linear dimensional specifications associated with linear size.
ISO 1938-1:2015 also defines the design characteristics and the metrological characteristics for these limit gauges as well as the new or wear limits state Maximum Permissible Limits (MPLs) for the new state or wear limits state for these metrological characteristics.
In addition, ISO 1938-1:2015 describes the use of limit gauges. It covers linear sizes up to 500 mm.
ISO 1938-1:2015 defines the different types of plain limit gauges used to verify linear dimensional specifications associated with linear size.
ISO 1938-1:2015 also defines the design characteristics and the metrological characteristics for these limit gauges as well as the new or wear limits state Maximum Permissible Limits (MPLs) for the new state or wear limits state for these metrological characteristics.
In addition, ISO 1938-1:2015 describes the use of limit gauges. It covers linear sizes up to 500 mm.
Alusdokumendid:
Asendatud: ISO 1938-1:2026
IEC TS 61340-5-4:2021
Electrostatics - Part 5-4: Protection of electronic devices from electrostatic phenomena - Compliance verification
Käsitlusala: IEC TS 61340-5-4:2021(E) describes compliance verification testing for technical items that are included in ESD control programs, such as those specified in IEC 61340-5-1.
Test methods are based on those specified in IEC 61340-5-1 and other parts of the IEC 61340 series, and are simplified where necessary for the purposes of compliance verification, to be performed by competent personnel.
Users can, by reference to this document in their compliance verification plan, adopt the necessary test methods described herein without change or addition. Alternatively, test methods described in this document can be adapted to match the requirements of their own ESD control program, provided deviations in equipment or procedure are documented in their compliance verification plan.
Compliance verification test frequency is not specified in this document. Guidance on how users can consider compliance verification test frequency is given in informative Annex A.
Product qualification is excluded from the scope of this document.
This first edition cancels and replaces IEC TR 61340-5-4 published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC TR 613405-4:
- test methods in the main body of the document have been made normative, and consequently normative references have been added;
- the term "ESD ground" has been added and defined;
- description of equipment for measuring low resistance has been added;
- user specified electrodes, including surface resistance bar electrodes, are permitted to be used for resistance measurements;
- an informative annex on verification of compliance verification test equipment has been added;
- compliance verification of person-footwear-flooring systems by measuring body voltage has been moved to an informative annex.
Test methods are based on those specified in IEC 61340-5-1 and other parts of the IEC 61340 series, and are simplified where necessary for the purposes of compliance verification, to be performed by competent personnel.
Users can, by reference to this document in their compliance verification plan, adopt the necessary test methods described herein without change or addition. Alternatively, test methods described in this document can be adapted to match the requirements of their own ESD control program, provided deviations in equipment or procedure are documented in their compliance verification plan.
Compliance verification test frequency is not specified in this document. Guidance on how users can consider compliance verification test frequency is given in informative Annex A.
Product qualification is excluded from the scope of this document.
This first edition cancels and replaces IEC TR 61340-5-4 published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to IEC TR 613405-4:
- test methods in the main body of the document have been made normative, and consequently normative references have been added;
- the term "ESD ground" has been added and defined;
- description of equipment for measuring low resistance has been added;
- user specified electrodes, including surface resistance bar electrodes, are permitted to be used for resistance measurements;
- an informative annex on verification of compliance verification test equipment has been added;
- compliance verification of person-footwear-flooring systems by measuring body voltage has been moved to an informative annex.
Alusdokumendid:
Asendatud: IEC TS 61340-5-4:2026
Kavandid
prEN IEC 61621:2026
Dry, solid insulating materials - Resistance test to high-voltage, low-current arc discharges
Käsitlusala: This International Standard describes a test method which can provide preliminary differentiation between similar insulating materials, with respect to their resistance to damage when exposed to high-voltage, low-current arc discharges, occurring close to their surfaces.
The discharges cause localized thermal and chemical decomposition and erosion and eventually a conductive path forms across the insulating material. The severity of the test conditions is gradually increased: in the early stages a low-current arc discharge is repeatedly interrupted, whereas in the later stages, the arc current is raised in successive steps.
Because of its convenience and because of the short time required for testing, the test method is applicable for preliminary screening of materials, for detecting the effects of changes in formulation and for quality control testing.
Previous experience with this test, showed acceptable reproducibility with thermoset materials.
Using thermoplastics, some testing laboratories report unacceptably large variation in test results which lead to the recommendation not to use the test for thermoplastics.
NOTE Attempts are being made to reduce the variability of the results of tests on thermoplastics by controlling the electrode pressure and depth of penetration into the material during the test. Without such electrode control, tests on many thermoplastics may not be sufficiently meaningful to be performed.
This test method will not, in general, permit conclusions to be drawn concerning the relative arc resistance rankings of materials which may be subjected to other types of arcs.
The ranking of materials may differ from what is found in wet tracking tests (e.g. IEC 60112:2025, IEC 60587:2022 and IEC 61302:1995) and from their performance in service, where the intensity, recurrence frequency and time of exposure to arc discharges are very different.Nevertheless, a certain correlation with the Inclined-Plane-Test according to IEC 60587:2022 was found within one material group (e.g. silicone elastomers). [1][2]
The discharges cause localized thermal and chemical decomposition and erosion and eventually a conductive path forms across the insulating material. The severity of the test conditions is gradually increased: in the early stages a low-current arc discharge is repeatedly interrupted, whereas in the later stages, the arc current is raised in successive steps.
Because of its convenience and because of the short time required for testing, the test method is applicable for preliminary screening of materials, for detecting the effects of changes in formulation and for quality control testing.
Previous experience with this test, showed acceptable reproducibility with thermoset materials.
Using thermoplastics, some testing laboratories report unacceptably large variation in test results which lead to the recommendation not to use the test for thermoplastics.
NOTE Attempts are being made to reduce the variability of the results of tests on thermoplastics by controlling the electrode pressure and depth of penetration into the material during the test. Without such electrode control, tests on many thermoplastics may not be sufficiently meaningful to be performed.
This test method will not, in general, permit conclusions to be drawn concerning the relative arc resistance rankings of materials which may be subjected to other types of arcs.
The ranking of materials may differ from what is found in wet tracking tests (e.g. IEC 60112:2025, IEC 60587:2022 and IEC 61302:1995) and from their performance in service, where the intensity, recurrence frequency and time of exposure to arc discharges are very different.Nevertheless, a certain correlation with the Inclined-Plane-Test according to IEC 60587:2022 was found within one material group (e.g. silicone elastomers). [1][2]
Alusdokumendid: 112/722/CDV; prEN IEC 61621:2026
prEN IEC 62053-22:2026
Electricity metering equipment - Particular requirements - Part 22: Static meters for AC active energy (classes 0,1S, 0,2S and 0,5S)
Käsitlusala: This part of IEC 62053 applies only to transformer-operated or transducer-operated static watt-hour meters of accuracy classes 0,1 S, 0,2 S and 0,5 S for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant standards in the IEC 62052 or IEC 62059 series.
This document applies to electricity metering equipment designed to:
– measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;
– be installed in a specified matching socket or rack;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 3 When transducer-operated meters are tested without transducers, the reference measurements may be performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter (standard, French: étalon) with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer-operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meters, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 4 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 5 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12. However, devices compliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with IEC 62052-11 edition 2 CDV:2026 and one or more relevant IEC 62053-xx accuracy class standards.
NOTE 6 Product requirements for power quality instruments (PQIs) are covered in IEC 62586-1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
This document does not apply to:
– meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC;
– metering systems comprising multiple devices (except transducers) physically remote from one another; – portable meters;
NOTE 7 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
– data interfaces to the register of the meter;
– matching sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering).
NOTE 8 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 9 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 10 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 11 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 12 For transformer-operated meters paired with current transformers (CTs) according to IEC 61869-2:
– the standard CT measuring range is specified from 0,05 In to Imax for accuracy classes 0,1, 0,2, 0,5 and 1 and these CTs are used for meters of class 0,5, 1 and 2 according to IEC 62053-21;
– the special CT measuring range is specified from 0,01 In to Imax for accuracy classes 0,2 S and 0,5 S and these CTs are used for meters of class 0,1 S, 0,2 S and 0,5 S according to this document;
– combinations of standard CTs and meters of class 0,1 S, 0,2 S and 0,5 S are subject to an agreement between manufacturers and purchasers.
NOTE 13 This document does not specify emission requirements, these are specified in IEC 62052-11 edition 2 CDV:2026, 9.3.14.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant standards in the IEC 62052 or IEC 62059 series.
This document applies to electricity metering equipment designed to:
– measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;
– be installed in a specified matching socket or rack;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 3 When transducer-operated meters are tested without transducers, the reference measurements may be performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter (standard, French: étalon) with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer-operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meters, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 4 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 5 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12. However, devices compliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with IEC 62052-11 edition 2 CDV:2026 and one or more relevant IEC 62053-xx accuracy class standards.
NOTE 6 Product requirements for power quality instruments (PQIs) are covered in IEC 62586-1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
This document does not apply to:
– meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC;
– metering systems comprising multiple devices (except transducers) physically remote from one another; – portable meters;
NOTE 7 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
– data interfaces to the register of the meter;
– matching sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering).
NOTE 8 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 9 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 10 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 11 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 12 For transformer-operated meters paired with current transformers (CTs) according to IEC 61869-2:
– the standard CT measuring range is specified from 0,05 In to Imax for accuracy classes 0,1, 0,2, 0,5 and 1 and these CTs are used for meters of class 0,5, 1 and 2 according to IEC 62053-21;
– the special CT measuring range is specified from 0,01 In to Imax for accuracy classes 0,2 S and 0,5 S and these CTs are used for meters of class 0,1 S, 0,2 S and 0,5 S according to this document;
– combinations of standard CTs and meters of class 0,1 S, 0,2 S and 0,5 S are subject to an agreement between manufacturers and purchasers.
NOTE 13 This document does not specify emission requirements, these are specified in IEC 62052-11 edition 2 CDV:2026, 9.3.14.
Alusdokumendid: 13/2002/CDV; prEN IEC 62053-22:2026
prEN IEC 62053-24:2026
Electricity metering equipment - Particular requirements - Part 24: Static meters for fundamental component reactive energy (classes 0,5S, 1S, 1, 2 and 3)
Käsitlusala: This part of IEC 62053 applies only to static var-hour meters of accuracy classes 0,5 S, 1 S, 1, 2 and 3 for the measurement of alternating current electrical reactive energy in 50 Hz or 60 Hz networks and it applies to their type tests only.
Classes 0,5 S and 1 S are only defined for transformer-operated and transducer-operated meters.
This document uses a conventional definition of reactive energy where the reactive power and energy is calculated from the fundamental frequency components of the currents and voltages only (see Clause 3).
NOTE 1 This differs from IEC 62053-23, where reactive power and energy is only defined for sinusoidal signals. In this document reactive power and energy is defined for all periodic signals. Reactive power and energy is defined in this way to achieve proper reproducibility of measurements with meters of different designs. With this definition, reactive power and energy reflects the generally unnecessary current which can be compensated with capacitors rather than the total unnecessary current.
NOTE 2 For other general requirements, such as safety, dependability, etc., see the relevant standards in the IEC 62052 or IEC 62059 series.
This document applies to electricity metering equipment designed to: – measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC;
NOTE 3 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;
– be installed in a specified matching socket or rack;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 4 When transducer-operated meters are tested without transducers, the reference measurements may be performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter (standard, French: étalon) with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer-operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meters, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 5 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 6 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12. However, devices compliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with IEC 62052-11 edition 3 CDV:2026 and one or more relevant IEC 62053-xx accuracy class standards.
NOTE 7 Product requirements for power quality instruments (PQIs) are covered in IEC 62586-1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
This document does not apply to: – meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC;
– metering systems comprising multiple devices (except transducers) physically remote from one another;
– portable meters;
NOTE 8 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
– data interfaces to the register of the meter;
– matching sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering).
NOTE 9 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 10 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 11 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 12 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 13 For transformer-operated meters paired with current transformers (CTs) according to IEC 61869-2:
– the standard CT measuring range is specified from 0,05 In to Imax for accuracy classes 0,1, 0,2, 0,5 and 1 and these CTs are used for meters of class 2 and 3 according to IEC 62053-23;
– the special CT measuring range is specified from 0,01 In to Imax for accuracy classes 0,2 S and 0,5 S and these CTs are used for meters of class 0,5 S and 1 S according to this document;
– combinations of standard CTs and meters of class 0,5 S and 1 S are subject to an agreement between manufacturers and purchasers.
NOTE 14 This document does not specify emission requirements, these are specified in IEC 62052-11 edition 3 CDV:2026, 9.3.14.
Classes 0,5 S and 1 S are only defined for transformer-operated and transducer-operated meters.
This document uses a conventional definition of reactive energy where the reactive power and energy is calculated from the fundamental frequency components of the currents and voltages only (see Clause 3).
NOTE 1 This differs from IEC 62053-23, where reactive power and energy is only defined for sinusoidal signals. In this document reactive power and energy is defined for all periodic signals. Reactive power and energy is defined in this way to achieve proper reproducibility of measurements with meters of different designs. With this definition, reactive power and energy reflects the generally unnecessary current which can be compensated with capacitors rather than the total unnecessary current.
NOTE 2 For other general requirements, such as safety, dependability, etc., see the relevant standards in the IEC 62052 or IEC 62059 series.
This document applies to electricity metering equipment designed to: – measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC;
NOTE 3 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;
– be installed in a specified matching socket or rack;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 4 When transducer-operated meters are tested without transducers, the reference measurements may be performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter (standard, French: étalon) with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer-operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meters, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 5 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 6 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12. However, devices compliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with IEC 62052-11 edition 3 CDV:2026 and one or more relevant IEC 62053-xx accuracy class standards.
NOTE 7 Product requirements for power quality instruments (PQIs) are covered in IEC 62586-1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
This document does not apply to: – meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC;
– metering systems comprising multiple devices (except transducers) physically remote from one another;
– portable meters;
NOTE 8 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
– data interfaces to the register of the meter;
– matching sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering).
NOTE 9 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 10 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 11 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 12 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 13 For transformer-operated meters paired with current transformers (CTs) according to IEC 61869-2:
– the standard CT measuring range is specified from 0,05 In to Imax for accuracy classes 0,1, 0,2, 0,5 and 1 and these CTs are used for meters of class 2 and 3 according to IEC 62053-23;
– the special CT measuring range is specified from 0,01 In to Imax for accuracy classes 0,2 S and 0,5 S and these CTs are used for meters of class 0,5 S and 1 S according to this document;
– combinations of standard CTs and meters of class 0,5 S and 1 S are subject to an agreement between manufacturers and purchasers.
NOTE 14 This document does not specify emission requirements, these are specified in IEC 62052-11 edition 3 CDV:2026, 9.3.14.
Alusdokumendid: 13/2003/CDV; prEN IEC 62053-24:2026
prEN IEC 62053-21:2026
Electricity metering equipment - Particular requirements - Part 21: Static meters for AC active energy (classes 0,5, 1 and 2)
Käsitlusala: This part of IEC 62053 applies only to static watt-hour meters of accuracy classes 0,5, 1 and 2 for the measurement of alternating current electrical active energy in 50 Hz or 60 Hz networks and it applies to their type tests only.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant standards in the IEC 62052 or IEC 62059 series.
This document applies to electricity metering equipment designed to: – measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;
– be installed in a specified matching socket or rack;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 3 When transducer-operated meters are tested without transducers, the reference measurements may be
performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter (standard, French: étalon) with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer-operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meters, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 4 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 5 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12. However, devices compliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with IEC 62052-11:202X and one or more relevant IEC 62053-xx accuracy class standards.
NOTE 6 Product requirements for power quality instruments (PQIs) are covered in IEC 62586-1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
This document does not apply to:
– meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V;
– metering systems comprising multiple devices (except transducers) physically remote from one another;
– portable meters;
NOTE 7 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
– data interfaces to the register of the meter;
– matching sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter's performance (tampering).
NOTE 8 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 9 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 10 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 11 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 12 For transformer-operated meters paired with current transformers (CTs) according to IEC 61869-2:
– the standard CT measuring range is specified from 0,05 In to Imax for accuracy classes 0,1, 0,2, 0,5 and 1 and these CTs are used for meters of class 0,5, 1 and 2 according to this document;
– the special CT measuring range is specified from 0,01 In to Imax for accuracy classes 0,2 S and 0,5 S and these CTs are used for meters of class 0,1 S, 0,2 S and 0,5 S according to IEC 62053-22;
– combinations of standard CTs and meters of class 0,1 S, 0,2 S and 0,5 S are subject to an agreement between manufacturers and purchasers.
NOTE 13 This document does not specify emission requirements, these are specified in IEC 62052-11 edition 3 CDV:2026 , 9.3.14.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant standards in the IEC 62052 or IEC 62059 series.
This document applies to electricity metering equipment designed to: – measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays;
– operate with integrated or detached indicating displays, or without an indicating display;
– be installed in a specified matching socket or rack;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 3 When transducer-operated meters are tested without transducers, the reference measurements may be
performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter (standard, French: étalon) with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer-operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meters, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 4 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 5 Product requirements for power metering and monitoring devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12. However, devices compliant with IEC 61557-12 are not intended to be used as billing meters unless they are also compliant with IEC 62052-11:202X and one or more relevant IEC 62053-xx accuracy class standards.
NOTE 6 Product requirements for power quality instruments (PQIs) are covered in IEC 62586-1. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
This document does not apply to:
– meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V;
– metering systems comprising multiple devices (except transducers) physically remote from one another;
– portable meters;
NOTE 7 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
– data interfaces to the register of the meter;
– matching sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter's performance (tampering).
NOTE 8 Nevertheless, specific tampering detection and prevention requirements, and test methods, as relevant for a particular market are subject to the agreement between the manufacturer and the purchaser.
NOTE 9 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 10 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 11 Billing systems, such as, smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 12 For transformer-operated meters paired with current transformers (CTs) according to IEC 61869-2:
– the standard CT measuring range is specified from 0,05 In to Imax for accuracy classes 0,1, 0,2, 0,5 and 1 and these CTs are used for meters of class 0,5, 1 and 2 according to this document;
– the special CT measuring range is specified from 0,01 In to Imax for accuracy classes 0,2 S and 0,5 S and these CTs are used for meters of class 0,1 S, 0,2 S and 0,5 S according to IEC 62053-22;
– combinations of standard CTs and meters of class 0,1 S, 0,2 S and 0,5 S are subject to an agreement between manufacturers and purchasers.
NOTE 13 This document does not specify emission requirements, these are specified in IEC 62052-11 edition 3 CDV:2026 , 9.3.14.
Alusdokumendid: 13/2001/CDV; prEN IEC 62053-21:2026
prEN IEC 62052-11:2026
Electricity metering equipment - General requirements, tests and test conditions - Part 11: Metering equipment
Käsitlusala: This part of IEC 62052 specifies requirements and associated tests, with their appropriate conditions for type testing of AC and DC electricity meters. This document details functional, mechanical, electrical and marking requirements, test methods, and test conditions, including immunity to external influences covering electromagnetic and climatic environments.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant IEC 62052 or IEC 62059 standards. For accuracy requirements and other requirements specific to class indices, see the relevant IEC 62053 standards.
This document applies to electricity metering equipment designed to:
– measure and control electrical energy on electrical networks (mains) with nominal voltage up to 1 000 V AC, or 1 500 V DC;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
NOTE 3 For meters designed for operation with transducers (i.e. transducer-operated meters), only the metering unit is considered a low voltage device. If the transducers are rated for voltages exceeding 1 000 V AC, or 1 500 V DC, the combination of the metering unit and transducers is not a low voltage device.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of displays and transducers;
– operate with integrated display, detached display, or without a display; – be installed independently or in specified sockets or racks;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document and the relevant IEC 62053 series documents:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 4 When transducer-operated meters are tested without transducers, the reference measurements may be performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meter, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known, and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 5 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, and recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 6 Product requirements for Power Metering and Monitoring Devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12:2018 [1]. However, devices compliant with IEC 61557-12:2018 [1] are not intended to be used as billing (revenue) meters unless they are also compliant with this document and one or more relevant particular requirements (accuracy class ) standards: IEC 62053-21 edition 3 CDV:2026, IEC 62053-22 edition 3 CDV:2026, IEC 62053-24 edition 3 CDV:2026, etc.
NOTE 7 Product requirements for Power Quality Instruments (PQIs) are covered in IEC 62586-1:2017 [2]. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30:2015 [3]. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
NOTE 8 The IEC TC13 strives to consider EMC phenomena that may occur in practice in meter installations and to amend its standards to ensure that an appropriate level of electromagnetic compatibility is specified for electricity metering equipment. To this end, IEC TC13 cooperates with the relevant IEC technical committees to characterize electromagnetic phenomena, to define emission limits, immunity levels and immunity verification methods based on which the appropriate test methods and requirements can be developed in the TC13 electricity metering equipment standards.
This document is also applicable to auxiliary input and output circuits, operation indicators, and test outputs of equipment for electrical energy measurement.
NOTE 9 Some examples include pulse inputs and outputs, control inputs and outputs, and energy test outputs.
This document also covers the common aspects of accuracy testing such as reference conditions, repeatability and measurement uncertainty.
This document does not apply to:
– meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC, or 1 500 V DC;
– metering systems comprising multiple devices (except transducers) physically remote from one another (i.e. distributed measurement systems);
– portable meters;
NOTE 10 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
NOTE 11 Nominal values, accuracy classes, requirements and test methods for reference standard meters are specified in IEC 62057-1:2023.
– data interfaces to the registers of the meter;
– sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
– electromechanical meters.
NOTE 12 Starting form its 3rd edition, the electromechanical meters are no longer covered this document. However, the requirements and tests for electromechanical meters remain available in the 1st edition of IEC 62053-11:2003 [4], and in IEC 62053-11:2003/AMD1:2016 [5], IEC 62053-11:2003/AMD1:2016/COR1:2018 [6], which use the 1st edition of IEC 62052-11:2003 [7], and IEC 62052-11:2003/AMD1:2016 [8], IEC 6205211:2003/AMD1:2016/COR1:2018 [9] as a normative references.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter's performance (tampering).
NOTE 13 Nevertheless, specific tampering detection and prevention requirements, and test methods as relevant for a particular market may be necessary but are neither identified nor prescribed in this document.
NOTE 14 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 15 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 16 Billing systems, such as smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
NOTE 1 For other general requirements, such as safety, dependability, etc., see the relevant IEC 62052 or IEC 62059 standards. For accuracy requirements and other requirements specific to class indices, see the relevant IEC 62053 standards.
This document applies to electricity metering equipment designed to:
– measure and control electrical energy on electrical networks (mains) with nominal voltage up to 1 000 V AC, or 1 500 V DC;
NOTE 2 For AC electricity meters, the voltage mentioned above is the line-to-neutral voltage derived from nominal voltages. See IEC 62052-31:2024, Table 7.
NOTE 3 For meters designed for operation with transducers (i.e. transducer-operated meters), only the metering unit is considered a low voltage device. If the transducers are rated for voltages exceeding 1 000 V AC, or 1 500 V DC, the combination of the metering unit and transducers is not a low voltage device.
– have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of displays and transducers;
– operate with integrated display, detached display, or without a display; – be installed independently or in specified sockets or racks;
– optionally, provide additional functions other than those for measurement of electrical energy.
Meters designed for operation with external transducers may be tested for compliance with this document and the relevant IEC 62053 series documents:
– as directly connected meters, when such meters and their transducers are tested together;
– as transducer-operated meters when such meters are tested without transducers.
NOTE 4 When transducer-operated meters are tested without transducers, the reference measurements may be performed at the input terminals of the meter. This may require, for example, a traceable reference standard meter with inputs compatible with mV or mA level transducer output signals. Another practical way to test transducer operated meters is to perform the reference measurement at the input terminals of calibrated reference transducers. This way, the reference standard meter, and test current sources may be the same as those used for testing of transformer-operated meters. The transformation ratio, metrological characteristics and uncertainty of the reference transducers are known, and their influence can be removed by post-processing the test data. The determination of the appropriate test methodology is left to the expertise of the testing laboratory.
NOTE 5 Modern electricity meters typically contain additional functions such as measurement of voltage magnitude, current magnitude, power, frequency, power factor, etc.; measurement of power quality parameters; load control functions; delivery, time, test, accounting, and recording functions; data communication interfaces and associated data security functions. The relevant standards for these functions may apply in addition to the requirements of this document. However, the requirements for such functions are outside the scope of this document.
NOTE 6 Product requirements for Power Metering and Monitoring Devices (PMDs) and measurement functions such as voltage magnitude, current magnitude, power, frequency, etc., are covered in IEC 61557-12:2018 [1]. However, devices compliant with IEC 61557-12:2018 [1] are not intended to be used as billing (revenue) meters unless they are also compliant with this document and one or more relevant particular requirements (accuracy class ) standards: IEC 62053-21 edition 3 CDV:2026, IEC 62053-22 edition 3 CDV:2026, IEC 62053-24 edition 3 CDV:2026, etc.
NOTE 7 Product requirements for Power Quality Instruments (PQIs) are covered in IEC 62586-1:2017 [2]. Requirements for power quality measurement techniques (functions) are covered in IEC 61000-4-30:2015 [3]. Requirements for testing of the power quality measurement functions are covered in IEC 62586-2.
NOTE 8 The IEC TC13 strives to consider EMC phenomena that may occur in practice in meter installations and to amend its standards to ensure that an appropriate level of electromagnetic compatibility is specified for electricity metering equipment. To this end, IEC TC13 cooperates with the relevant IEC technical committees to characterize electromagnetic phenomena, to define emission limits, immunity levels and immunity verification methods based on which the appropriate test methods and requirements can be developed in the TC13 electricity metering equipment standards.
This document is also applicable to auxiliary input and output circuits, operation indicators, and test outputs of equipment for electrical energy measurement.
NOTE 9 Some examples include pulse inputs and outputs, control inputs and outputs, and energy test outputs.
This document also covers the common aspects of accuracy testing such as reference conditions, repeatability and measurement uncertainty.
This document does not apply to:
– meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC, or 1 500 V DC;
– metering systems comprising multiple devices (except transducers) physically remote from one another (i.e. distributed measurement systems);
– portable meters;
NOTE 10 Portable meters are meters that are not permanently connected.
– meters used in rolling stock, vehicles, ships and airplanes;
– laboratory and meter test equipment;
– reference standard meters;
NOTE 11 Nominal values, accuracy classes, requirements and test methods for reference standard meters are specified in IEC 62057-1:2023.
– data interfaces to the registers of the meter;
– sockets or racks used for installation of electricity metering equipment;
– any additional functions provided in electrical energy meters.
– electromechanical meters.
NOTE 12 Starting form its 3rd edition, the electromechanical meters are no longer covered this document. However, the requirements and tests for electromechanical meters remain available in the 1st edition of IEC 62053-11:2003 [4], and in IEC 62053-11:2003/AMD1:2016 [5], IEC 62053-11:2003/AMD1:2016/COR1:2018 [6], which use the 1st edition of IEC 62052-11:2003 [7], and IEC 62052-11:2003/AMD1:2016 [8], IEC 6205211:2003/AMD1:2016/COR1:2018 [9] as a normative references.
This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter's performance (tampering).
NOTE 13 Nevertheless, specific tampering detection and prevention requirements, and test methods as relevant for a particular market may be necessary but are neither identified nor prescribed in this document.
NOTE 14 Specifying requirements and test methods for fraud detection and prevention would be counterproductive, as such specifications would provide guidance for potential fraudsters.
NOTE 15 There are many types of meter tampering reported from various markets; therefore, designing meters to detect and prevent all types of tampering could lead to unjustified increase in costs of meter design, verification and validation.
NOTE 16 Billing systems, such as smart metering systems, are capable of detecting irregular consumption patterns and irregular network losses which enable discovery of suspected meter tampering.
Alusdokumendid: 13/1999/CDV; prEN IEC 62052-11:2026