oSIST prEN IEC 62053-22:2026

• Status: Not Published
• Public Enquiry End Date: 30-Jul-2026
• ICS: 17.220.20 - Measurement of electrical and magnetic quantities
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: MEE - Equipment for electrical energy measurement and load control
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 11-Jun-2026
• Due Date: 29-Oct-2026
• Completion Date: 03-Aug-2026
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Mandate: M/441 - Standardisation mandate to CEN, CENELEC and ETSI in the field of measuring instruments for the development of an open architecture for utility meters involving communication protocols enabling interoperability
• Mandate: M/552 - [C(2016) 7641 final] Standardisation request as regards harmonised standards in support of Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
• Ref Project: 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)

• Revises: SIST EN IEC 62053-22:2021 - Electricity metering equipment - Particular requirements - Part 22: Static meters for AC active energy (classes 0,1S, 0,2S and 0,5S)
• Effective Date: 08-Apr-2025
• Revises: SIST EN IEC 62053-22:2021/A11:2021 - Electricity metering equipment - Particular requirements - Part 22: Static meters for AC active energy (classes 0,1S, 0,2S and 0,5S)
• Effective Date: 08-Apr-2025

oSIST prEN IEC 62053-22:2026 is the Slovene standard published by SIST that corresponds to prEN IEC 62053-22:2026 from IEC. It specifies particular requirements for transformer-operated or transducer-operated static meters for alternating current (AC) active energy in 50 Hz or 60 Hz networks, for accuracy classes 0,1S, 0,2S and 0,5S. It is written for type testing, so manufacturers, test laboratories and purchasers can use it to check meter performance and suitability.

What does oSIST prEN IEC 62053-22:2026 specify?

oSIST prEN IEC 62053-22:2026 sets the particular requirements for static watt-hour meters used to measure AC active energy, and it applies only to type tests. The document is organized into Clauses 1 to 10, followed by Annex A.

The standard covers meters intended for networks up to 1 000 V AC, with all functional elements enclosed in one meter case except the indicating display. It also allows integrated or detached displays, installation in a matching socket or rack, and optional extra functions.

It applies to meters designed for external transducers in two ways:

• as directly connected meters, when the meter and transducers are tested together
• as transducer-operated meters, when the meter is tested without the transducers

The scope excludes portable meters, rolling stock, vehicles, ships and airplanes, laboratory and meter test equipment, reference standard meters, remote multi-device systems, and meters above the stated voltage range. It also leaves out tampering detection and prevention requirements.

What are the key requirements of oSIST prEN IEC 62053-22:2026?

Meter ratings, currents and construction

oSIST prEN IEC 62053-22:2026 uses the electrical values from IEC 62052-11 for voltage and frequency, and it adds the current-related signals needed for this part. Clause 4 is important because it fixes the operating points that laboratories and product designers must use when checking meter behavior.

For currents, the document introduces the starting, minimum, transitional and maximum current signals for both transformer-operated and transducer-operated meters. In practice, this means a meter has to work not only at its normal current range but also at the low-current and high-current points used for registration and accuracy testing.

Clauses 5 and 6 defer construction requirements, marking and documentation to IEC 62052-11. That keeps the basic meter design, nameplate and user information aligned with the general metering standard, while this part focuses on the accuracy and influence tests.

Accuracy at reference conditions

Clause 7.9 sets the relative error limits at reference conditions for the three accuracy classes. The limits apply to single-phase meters and to poly-phase meters under balanced loads or single-phase loads, so test engineers must choose the loading arrangement carefully.

If a meter measures energy in both directions, the class limits apply in each direction. If a meter has multiple connection modes, the accuracy result is valid only for the connection modes actually tested, so a manufacturer cannot transfer one tested mode to an untested one.

Clause 7.5 to 7.8 cover initial start-up, no-load, starting current and repeatability tests. These checks matter because they show whether the meter starts, remains stable at low load, and repeats its result when the same test is run again.

Influence quantities and environmental stress

Clause 7.10 gives the limits for error shift caused by influence quantities. The tests cover electromagnetic and electrical disturbances, harmonic and waveform effects, voltage and frequency variation, auxiliary supply effects, self-heating, fast load changes, earth fault, and climatic exposure.

The document says the tests for influence quantities should be performed in one connection mode that exercises the meter’s full metrological capability. For a laboratory, that means choosing the most demanding practical wiring arrangement rather than testing every possible mode separately.

Clause 8 covers climatic requirements, and Clause 9 covers the effects of external influences. For tests with acceptance criterion A, Clause 9 points back to Table 6 in this document, so the special limits here govern the external-influence checks for this meter family.

Type testing and precedence over the base standard

Clause 10 applies the type-test requirements from IEC 62052-11. This confirms that oSIST prEN IEC 62053-22:2026 is a product standard for verification of meter types, not a field-installation or acceptance-inspection rule.

Where this document sets a requirement that overlaps with IEC 62052-11 or IEC 62052-31, the requirement in this part takes precedence. That matters in procurement and certification because the specific AC active-energy rules here override the more general meter rules where they differ.

What terms does oSIST prEN IEC 62053-22:2026 define?

oSIST prEN IEC 62053-22:2026 uses the terms and definitions from IEC 62052-11, so the wording is aligned with the general metering standard. The key terms in this part are the ones that control how the meter is rated and tested.

• Static meter - A meter with electronic measurement functions, used here for AC active energy.
• Transformer-operated meter - A meter intended to work with instrument transformers rather than direct connection.
• Transducer-operated meter - A meter intended to work with external transducers; this part allows it to be tested without the transducers.
• Starting current signal - The low current point used to check when the meter begins to register energy.
• Minimum current signal - The low current level used in the accuracy checks.
• Transitional current signal - The current level introduced in this edition that separates low-current behavior from higher-current behavior.
• Maximum current signal - The upper current level used to check metering performance at high load.
• Relative error - The difference between the meter result and the reference result, used throughout the accuracy tables.

Who uses oSIST prEN IEC 62053-22:2026?

This standard is used by meter manufacturers, design engineers, test laboratories, conformity assessment bodies and purchasers of electricity metering equipment. It is especially relevant to people who specify or verify static meters for billing and energy measurement in AC networks.

Utilities and system integrators can use it when selecting meters for installations that require defined accuracy classes and type-tested performance. Quality managers use it to plan product verification, document test evidence and check whether a meter type matches the intended connection mode and operating range.

What changed in oSIST prEN IEC 62053-22:2026 from the previous edition?

oSIST prEN IEC 62053-22:2026 is the third edition and replaces the second edition published in 2020. The document states these significant technical changes:

• normative references were updated
• transducer-operated meters were added to the scope, when tested without transducers
• the transitional current was introduced
• the starting, minimum and maximum current signals were expressed as fractions of the transitional current
• a ripple on DC supply voltage test was introduced
• the figures in Annex A were revised

Which standards are used with oSIST prEN IEC 62053-22:2026?

Standard	What it contributes
IEC 62052-11 edition 2 CDV:2026	General meter requirements, test conditions, terms and the main test framework used throughout this part
IEC 62052-31:2024	Product safety requirements and tests for metering equipment
IEC 62052-41:2022	Energy registration methods and requirements for multi-energy and multi-rate meters
IEC 62053-21 edition 3 CDV:2026	Static meters for AC active energy of classes 0,5, 1 and 2
IEC 62053-23 edition 3 CDV:2026	Static meters for reactive energy of classes 2 and 3
IEC 62053-24 edition 3 CDV:2026	Static meters for fundamental component reactive energy
IEC 62053-41:2021	Static meters for DC energy
IEC 62055-31:2022	Static payment meters for active energy
IEC 62057-1:2023	Stationary meter test units and test equipment
IEC 62057-3:2024	Automatic meter testing systems
IEC 62058-11:2008	General AC acceptance inspection methods
IEC 62058-31:2008	Particular acceptance inspection requirements for static active-energy meters
IEC TR 62059-11:2002	General dependability concepts
IEC TR 62059-21:2002	Collection of meter dependability data from the field
IEC 62059-32-1:2011	Stability testing of metrological characteristics by elevated temperature

What does the oSIST prEN IEC 62053-22:2026 document contain?

The document contains the core test and requirement structure for type testing these meters: electrical values, construction requirements, marking and documentation, accuracy requirements, climatic requirements and external-influence tests. It also includes Tables 1 to 6, which set the current signal definitions and the error-limit framework used in testing.

Annex A provides a comparison of relative error limits at reference conditions for the three accuracy classes, with figures for different power factor and current conditions. In practice, this helps engineers and buyers compare how the classes behave across the range of intended test conditions without reading multiple separate standards.

SLOVENSKI STANDARD
01-julij-2026
Oprema za merjenje električne energije - Posebne zahteve - 22. del: Statični števci
delovne energije (razredi 0,1 S, 0,2 S in 0,5 S)
Electricity metering equipment - Particular requirements - Part 22: Static meters for AC
active energy (classes 0,1S, 0,2S and 0,5S)
Elektrizitätszähler - Besondere Anforderungen - Teil 22: Elektronische
Wirkverbrauchszähler für Wechselstrom der Genauigkeitsklassen 0,1 S, 0,2 S und 0,5 S
équipement de comptage de l'électricité - Exigences particulières - Partie 22: Compteurs
statiques d'énergie active en courant alternatif (classes 0,1 S, 0,2 S et 0,5 S)
Ta slovenski standard je istoveten z: prEN IEC 62053-22:2026
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

13/2002/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62053-22 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-06-05 2026-08-28
SUPERSEDES DOCUMENTS:
13/1949/CD, 13/1996/CC
IEC TC 13 : ELECTRICAL ENERGY MEASUREMENT AND CONTROL
SECRETARIAT: SECRETARY:
Hungary Mr Bela Bodi
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
TC 85,ACEC
ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is
the final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Electricity metering equipment - Particular requirements - Part 22: Static meters for AC active
energy (classes 0,1S, 0,2S and 0,5S)

PROPOSED STABILITY DATE: 2032
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IEC CDV 62053-22 © IEC 2026
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IEC CDV 62053-22 © IEC 2026
CONTENTS
CONTENTS . 1
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 Standard electrical values . 10
4.1 Voltages . 10
4.2 Currents . 10
4.2.1 Nominal current signal . 10
4.2.2 Starting current signal . 10
4.2.3 Minimum current signal . 10
4.2.4 Transitional current signal . 10
4.2.5 Maximum current signal . 10
4.3 Frequencies . 11
4.4 Power consumption. 11
5 Construction requirements . 11
6 Meter marking and documentation . 11
7 Accuracy requirements . 11
7.1 General test conditions . 11
7.2 Methods of accuracy verification . 11
7.3 Measurement uncertainty . 11
7.4 Meter constant . 11
7.5 Initial start-up of the meter . 11
7.6 Test of no-load condition . 11
7.7 Starting current test . 12
7.8 Repeatability test . 12
7.9 Limits of error due to variation of the current signal . 12
7.10 Limits of error shift due to influence quantities . 13
7.11 Time-keeping accuracy . 15
8 Climatic requirements . 15
9 The effects of external influences . 15
10 Type test . 15
Annex A (informative) Comparison of relative error limits at reference conditions for
meters of classes 0,1 S, 0,2 S and 0,5 S . 16
Bibliography . 18

Figure A.1 – Comparison of relative error limits for meters of classes 0,1 S, 0,2 S and
0,5 S, with I = 1 A and I = 2 A, at power factor = 1,0 . 16
n max
Figure A.2 – Comparison of relative error limits for meters of classes 0,1 S, 0,2 S, and
0,5 S, with I = 1 A and I = 2 A, at power factor = 0,5 inductive or 0,8 capacitive . 17
n max
Table 1 – Starting current signal . 10
Table 2 – Minimum current signal . 10
Table 3 – Transitional current signal . 10
IEC CDV 62053-22 © IEC 2026
Table 4 – Maximum current signal . 11
Table 5 – Limits of relative error at reference conditions (single-phase meters and
poly-phase meters with balanced loads or single-phase loads) . 12
Table 6 – Limits of relative error shift due to influence quantities . 13

IEC CDV 62053-22 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Electricity metering equipment - Particular requirements -
Part 22: Static meters for AC active energy (classes 0,1S, 0,2S and 0,5S)

FOREWORD
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standardization comprising all national electrotechnical committees (IEC National Committees).
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced
publications is indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve
the use of (a) patent(s). IEC takes no position concerning the evidence, validity or applicability
of any claimed patent rights in respect thereof. As of the date of publication of this document,
IEC had not notice of (a) patent(s), which may be required to implement this document.
However, implementers are cautioned that this may not represent the latest information, which
IEC CDV 62053-22 © IEC 2026
may be obtained from the patent database available at https://patents.iec.ch and 9) IEC draws
attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, IEC had not
notice of (a) patent(s), which may be required to implement this document. However,
implementers are cautioned that this may not represent the latest information, which may be
obtained from the patent database available at https://patents.iec.ch and www.iso.org/patents .
IEC shall not be held responsible for identifying any or all such patent rights. . IEC shall not be
held responsible for identifying any or all such patent rights.
IEC 62053-22 has been prepared by IEC technical committee 13: Electrical energy
measurement and control. It is an International Standard.
This third edition cancels and replaces the second edition published in 2020. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) Normative references have been updated;
b) Transducer-operated meters included in scope (tested without transducers);
c) The transitional current has been introduced;
d) The starting current, minimum current and maximum current have been expressed as
fractions of the transitional current;
e) The test "Ripple on DC supply voltage" has been introduced;
f) Figures in Annex A have been revised.
The text of this International Standard is based on the following documents:
Draft Report on voting
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English [change
language if necessary].
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62053 series, published under the general title Electricity metering
equipment – Particular requirements, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
IEC CDV 62053-22 © IEC 2026
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of this publication be adopted for implementation nationally
not earlier than 2 years from the date of publication.
IEC CDV 62053-22 © IEC 2026
INTRODUCTION
This part of IEC 62053 is to be used with relevant parts of the IEC 62052, IEC 62058 and
IEC 62059 series, Electricity metering equipment, with the IEC 62055 series, Electricity
metering – Payment systems and with the IEC 62057 series, Electrical energy meters:
IEC 62052-11 edition 2 CDV:2026 , Electricity metering equipment – General requirements,
tests and test conditions – Part 11: Metering equipment
IEC 62052-31:2024, Electricity metering equipment – General requirements, tests and test
conditions – Part 31: Product safety requirements and tests
IEC 62052-41:2022, Electricity metering equipment – General requirements, tests and test
conditions – Part 41: Energy registration methods and requirements for multi-energy and multi-
rate meters
IEC 62053-21 edition 3 CDV :2026, Electricity metering equipment – Particular requirements –
Part 21: Static meters for AC active energy (classes 0,5, 1 and 2)
IEC 62053-23 edition 3 CDV :2026, Electricity metering equipment – Particular requirements –
Part 23: Static meters for reactive energy (classes 2 and 3)
IEC 62053-24 edition 3 CDV :2026, Electricity metering equipment – Particular requirements –
Part 24: Static meters for fundamental component reactive energy (classes 0,5 S, 1 S, 1, 2 and
3)
IEC 62053-41:2021, Electricity metering equipment – Particular requirements – Part 41: Static
meters for DC energy (classes 0,5 and 1)
IEC 62055-31:2022, Electricity metering – Payment systems – Part 31: Particular requirements
– Static payment meters for active energy (classes 1 and 2)
IEC 62057-1:2023, Electrical energy meters – Test equipment, techniques and procedures –
Part 1: Stationary meter test units (MTUs)
IEC 62057-3:2024, Electrical energy meters – Test equipment, techniques and procedures –
Part 3: Automatic meter testing system (AMTS)
IEC 62058-11:2008, Electricity metering equipment (AC) – Acceptance inspection – Part 11:
General acceptance inspection methods
IEC 62058-31:2008, Electricity metering equipment (AC) – Acceptance inspection – Part 31:
Particular requirements for static meters for active energy (classes 0,2 S, 0,5 S, 1 and 2)
IEC TR 62059-11:2002, Electricity metering equipment – Dependability – Part 11: General
concepts
IEC TR 62059-21:2002, Electricity metering equipment – Dependability – Part 21: Collection of
meter dependability data from the field
IEC 62059-32-1:2011, Electricity metering equipment – Dependability – Part 32-1: Durability –
Testing of the stability of metrological characteristics by applying elevated temperature
This part is a standard for type testing electricity meters. It covers the particular requirements
for meters, being used indoors and outdoors in large quantities worldwide. It does not deal with
special implementations (such as metering-part and/or displays in separate housings).
IEC CDV 62053-22 © IEC 2026
This document is intended to be used in conjunction with IEC 62052-11 edition 2 CDV:2026
and with IEC 62052-31:2024. When any requirement in this document concerns an item already
covered in IEC 62052-11 edition 2 CDV:20
...