EN IEC 62053-21:2021
(Main)Electricity metering equipment - Particular requirements - Part 21: Static meters for AC active energy (classes 0,5, 1 and 2)
Electricity metering equipment - Particular requirements - Part 21: Static meters for AC active energy (classes 0,5, 1 and 2)
IEC 62053-21:2020 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. 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; • 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 low power instrument transformers (LPITs as defined in the IEC 61869 series) may be tested for compliance with this document only if such meters and their LPITs are tested together and meet the requirements for directly connected meters. This document does not apply to: • meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC; • meters intended for connection with low power instrument transformers (LPITs as defined in the IEC 61869 series) when tested without such transformers; • metering systems comprising multiple devices (except LPITs) physically remote from one another; • portable meters; • 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). This second edition cancels and replaces the first edition published in 2003 and its amendment 1:2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Removed all meter safety requirements; the meter safety requirements are covered in IEC 62052-31: 2015. b) Replaced Ib with In; Ib is no longer used when referencing directly connected meters. c) Moved the descriptions of all general requirements and test methods from IEC 62053-21: 2003, IEC 62053-22: 2003, IEC 62053-23: 2003, IEC 62053-24: 2003 to IEC 62052-11:2020; IEC 62053-21:2020, IEC 62053-22:2020, IEC 62053-23:2020, IEC 62053-24:2020 contain only accuracy class specific requirements. d) Added new requirements and tests concerning: 1) measurement uncertainty and repeatability (7.3, 7.8); 2) influence of fast load current variations (9.4.12); 3) immunity to conducted differential current disturbances in the 2 kHz to 150 kHz frequency range (9.3.8). e) Meters designed for operation with low power instrument transformers (LPITs) may be tested for compliance with this document as directly connected meters.
Elektrizitätszähler - Besondere Anforderungen - Teil 21: Elektronische Wirkverbrauchszähler für Wechselstrom der Genauigkeitsklassen 0,5, 1 und 2
Équipement de comptage de l'électricité - Exigences particulières - Partie 21: Compteurs statiques d'énergie active en courant alternatif (classes 0,5, 1 et 2)
IEC 62053-21:2020 est applicable uniquement aux compteurs statiques d'énergie active des classes de précision 0,5, 1 et 2, destinés à la mesure de l'énergie électrique active en courant alternatif sur les réseaux électriques en 50 Hz et 60 Hz, et à leurs essais de type. Le présent document s'applique aux équipements de comptage de l'électricité conçus pour: • mesurer et piloter l'énergie électrique sur les réseaux électriques (secteur) avec une tension allant jusqu'à 1 000 V; • avoir tous les éléments fonctionnels, y compris les modules complémentaires, incorporés dans ou formant un boîtier de compteur unique, à l'exception des afficheurs; • fonctionner avec des afficheurs intégrés ou séparés, ou sans afficheur; • être installés dans une embase ou un bâti correspondant spécifié; • assurer, en option, des fonctions autres que celles relatives au comptage de l'énergie électrique. Les compteurs conçus pour être utilisés avec des transformateurs de mesure de faible puissance (LPIT, Low Power Instrument Transformers, définis dans la série IEC 61869) ne peuvent être soumis à des essais de conformité au présent document que si ces compteurs et leurs LPIT sont soumis à l'essai ensemble et satisfont aux exigences relatives aux compteurs à branchement direct. Le présent document ne s'applique pas: • aux compteurs dont la tension phase-neutre déduite des tensions nominales dépasse 1 000 V; • aux compteurs destinés à être connectés à des transformateurs de mesure de faible puissance (LPIT, définis dans la série IEC 61869) lorsqu'ils sont soumis à l'essai sans ces transformateurs; • aux systèmes de comptage comprenant plusieurs dispositifs (à l'exception des LPIT) physiquement éloignés les uns des autres; • aux compteurs portatifs; • aux compteurs utilisés dans le matériel roulant, les véhicules, les navires et les avions; • aux équipements de laboratoire et d'essai des compteurs; • aux compteurs étalons de référence; • aux interfaces de données avec l'élément indicateur du compteur; • aux embases ou bâtis correspondants utilisés pour l'installation des équipements de comptage de l'électricité; • à toute fonction complémentaire assurée par les compteurs d'énergie électrique. Le présent document ne couvre pas les mesures de détection et de prévention des tentatives frauduleuses de compromettre les performances du compteur (falsification). Cette deuxième édition annule et remplace la première édition parue en 2003 et son amendement 1:2016. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: voir Annexe B.
Oprema za merjenje električne energije - Posebne zahteve - 21. del: Statični števci delovne energije (razreda 0,5, 1 in 2)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN 62053-21:2004
SIST EN 62053-21:2004//A1:2017
SIST EN 62053-21:2004/A1:2017/AC:2018
Oprema za merjenje električne energije - Posebne zahteve - 21. del: Statični števci
delovne energije (razreda 0,5, 1 in 2)
Electricity metering equipment - Particular requirements - Part 21: Static meters for AC
active energy (classes 0,5, 1 and 2)
Ta slovenski standard je istoveten z: EN IEC 62053-21:2021
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.
EUROPEAN STANDARD EN IEC 62053-21
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 17.220.20 Supersedes EN 62053-21:2003 and all of its
amendments and corrigenda (if any)
English Version
Electricity metering equipment - Particular requirements –
Part 21: Static meters for AC active energy
(classes 0,5, 1 and 2)
(IEC 62053-21:2020)
Équipement de comptage de l'électricité - Exigences Elektrizitätszähler - Besondere Anforderungen - Teil 21:
particulières - Partie 21: Compteurs statiques d'énergie Elektronische Wirkverbrauchszähler für Wechselstrom der
active en courant alternatif (classes 0,5, 1 et 2) Genauigkeitsklassen 0,5, 1 und 2
(IEC 62053-21:2020) (IEC 62053-21:2020)
This European Standard was approved by CENELEC on 2020-07-22. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62053-21:2021 E
European foreword
The text of document 13/1805A/FDIS, future edition 2 of IEC 62053-21, prepared by IEC/TC 13
"Electrical energy measurement and control" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62053-21:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-10-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-04-02
document have to be withdrawn
This document supersedes EN 62053-21:2003 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association.
Endorsement notice
The text of the International Standard IEC 62053-21:2020 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62052-11 2020 Electricity metering equipment - General EN IEC 62052-11 2021
requirements, tests and test conditions -
Part 11: Metering equipment
IEC 62053-21 ®
Edition 2.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electricity metering equipment – Particular requirements –
Part 21: Static meters for AC active energy (classes 0,5, 1 and 2)
Équipement de comptage de l'électricité – Exigences particulières –
Partie 21: Compteurs statiques d'énergie active en courant alternatif
(classes 0,5, 1 et 2)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-8438-4
– 2 – IEC 62053-21:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
4 Standard electrical values. 9
4.1 Voltages . 9
4.2 Currents . 10
4.2.1 Nominal currents . 10
4.2.2 Starting current . 10
4.2.3 Minimum current . 10
4.2.4 Maximum current . 10
4.3 Frequencies . 10
4.4 Power consumption . 10
5 Construction requirements . 10
6 Meter marking and documentation . 10
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 . 11
7.8 Repeatability test . 11
7.9 Limits of error due to variation of the current . 11
7.10 Limits of error due to influence quantities . 12
7.11 Time-keeping accuracy . 14
8 Climatic requirements . 14
9 The effects of external influences . 15
10 Type test . 15
Annex A (informative) Comparison of acceptable percentage error limits at reference
conditions for meters of classes 0,5, 1, and 2 . 16
Annex B (informative) Summary of changes . 17
Figure A.1 – Comparison of acceptable percentage error limits for meters of classes
0,5, 1 and 2, with I = 5 A and I = 10 A, at PF = 1,0, for direct connection . 16
n max
Figure A.2 – Comparison of acceptable percentage error limits for meters of classes
0,5, 1 and 2, with I = 5 A and I = 10 A, at PF = 0,5 inductive, for direct connection . 16
n max
Table 1 – Starting current . 10
Table 2 – Minimum current. 10
Table 3 – Acceptable percentage error limits (single-phase meters and poly-phase
meters with balanced loads or single-phase loads) . 12
IEC 62053-21:2020 © IEC 2020 – 3 –
Table 4 – Acceptable limits of variation in percentage error due to influence quantities . 13
– 4 – IEC 62053-21:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICITY METERING EQUIPMENT –
PARTICULAR REQUIREMENTS –
Part 21: Static meters for AC active energy (classes 0,5, 1 and 2)
FOREWORD
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