IEC 62053-23:2003
(Main)Electricity metering equipment (a.c.) - Particular requirements - Part 23: Static meters for reactive energy (classes 2 and 3)
Electricity metering equipment (a.c.) - Particular requirements - Part 23: Static meters for reactive energy (classes 2 and 3)
Applies only to newly manufactured static var-hour meters of accuracy classes 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. For practical reasons, this standard is based on a conventional definition of reactive energy for sinusoidal currents and voltages containing the fundamental frequency only.
This publication is of high relevance for Smart Grid.
Equipement de comptage de l'électricité (c.a.) - Prescriptions particulières - Partie 23: Compteurs statiques d'énergie reactive (classes 2 et 3)
est applicable uniquement aux compteurs statiques d'énergie réactive neufs des classes de précision 2 et 3, destinés à la mesure de l'énergie électrique réactive en courant alternatif sur les réseaux électriques en 50 Hz et 60 Hz, et à leurs essais de type. Pour des raisons pratiques, cette norme est basée sur une définition conventionnelle de lénergie réactive pour intensités et tensions sinusoïdales contenant seulement la fréquence fondamentale.
General Information
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Standards Content (Sample)
NORME CEI
INTERNATIONALE IEC
62053-23
INTERNATIONAL
Première édition
STANDARD
First edition
2003-01
Equipement de comptage de l'électricité (c.a.) –
Prescriptions particulières –
Partie 23:
Compteurs statiques d'énergie réactive
(classes 2 et 3)
Electricity metering equipment (a.c.) –
Particular requirements –
Part 23:
Static meters for reactive energy
(classes 2 and 3)
Numéro de référence
Reference number
CEI/IEC 62053-23:2003
Numérotation des publications Publication numbering
Depuis le 1er janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are
sont numérotées à partir de 60000. Ainsi, la CEI 34-1 issued with a designation in the 60000 series. For
devient la CEI 60034-1. example, IEC 34-1 is now referred to as IEC 60034-1.
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NORME CEI
INTERNATIONALE IEC
62053-23
INTERNATIONAL
Première édition
STANDARD
First edition
2003-01
Equipement de comptage de l'électricité (c.a.) –
Prescriptions particulières –
Partie 23:
Compteurs statiques d'énergie réactive
(classes 2 et 3)
Electricity metering equipment (a.c.) –
Particular requirements –
Part 23:
Static meters for reactive energy
(classes 2 and 3)
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Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
Q
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue
– 2 – 62053-23 CEI:2003
SOMMAIRE
AVANT-PROPOS . 4
INTRODUCTION .6
1 Domaine d'application. 8
2 Références normatives . 8
3 Termes et définitions . 8
4 Valeurs électriques normales.10
5 Prescriptions mécaniques .10
6 Conditions climatiques .10
7 Prescriptions électriques.10
7.1 Consommation.10
7.2 Influence des surintensités de courte durée.12
7.3 Influence de l'échauffement propre .12
7.4 Essai à la tension alternative .14
8 Prescriptions métrologiques.16
8.1 Limites des erreurs dues à la variation du courant .16
8.2 Limites des erreurs dues aux grandeurs d’influence.16
8.3 Essai de condition de démarrage et marche à vide .20
8.4 Constante du compteur.22
8.5 Condition d’essai de précision .22
8.6 Interprétation des résultats de mesure.24
Annexe A (normative) Schéma du circuit pour l’essai avec la composante continue .26
Annexe B (normative) Electroaimant pour l'essai d'influence au champ magnétique
d'origine extérieure .30
Annexe C (informative) Représentation géométrique de la puissance active et réactive .32
Figure A.1 – Schéma du circuit d'essai pour redressement demi-période .26
Figure A.2 – Forme d'onde redressée en demi-onde .28
Figure B.1 – Electroaimant pour l’essai d’influence au champ
magnétique d’origine extérieure .30
Figure C.1 – Représentation géométrique recommandée .32
Figure C.2 – Autre représentation géométrique possible .34
Tableau 1 – Puissance absorbée dans le circuit de tension pour les compteurs
monophasés et polyphasés y compris l'alimentation.10
Tableau 2 – Puissance absorbée dans le circuit de courant .12
Tableau 3 – Variations dues aux surintensités de courte durée .12
Tableau 4 – Variations dues à l'échauffement propre .14
Tableau 5 – Essais à la tension alternative .14
Tableau 6 – Limites des erreurs en pourcentage (compteurs monophasés et compteurs
polyphasés avec charges équilibrées).16
Tableau 7 – Limites des erreurs en pourcentage (compteurs polyphasés sous tensions
polyphasées équilibrées avec une seule charge monophasée).16
Tableau 8 – Grandeurs d'influence.18
Tableau 9 – Courant de démarrage .22
Tableau 10 – Equilibre des tensions et courants .22
Tableau 11 – Conditions de référence.24
Tableau 12 – Interprétation des résultats de mesure .24
62053-23 IEC:2003 – 3 –
CONTENTS
FOREWORD . 5
INTRODUCTION .7
1 Scope . 9
2 Normative references. 9
3 Terms and definitions . 9
4 Standard electrical values.11
5 Mechanical requirements .11
6 Climatic conditions.11
7 Electrical requirements .11
7.1 Power consumption .11
7.2 Influence of short-time overcurrents.13
7.3 Influence of self-heating .13
7.4 AC voltage test .15
8 Accuracy requirements .17
8.1 Limits of error due to variation of the current .17
8.2 Limits of error due to influence quantities .17
8.3 Test of starting and no-load condition .21
8.4 Meter constant.23
8.5 Accuracy test conditions .23
8.6 Interpretation of test results .25
Annex A (normative) Test circuit diagram for d.c. component .27
Annex B (normative) Electromagnet for testing the influence of externally produced
magnetic fields.31
Annex C (informative) Geometric representation of active and reactive power.33
Figure A.1 – Test circuit diagram for half-wave rectification.27
Figure A.2 – Half-wave rectified wave-form .29
Figure B.1 – Electromagnet for testing the influence of externally produced magnetic
fields.31
Figure C.1 – Recommended geometric representation .33
Figure C.2 – Alternative geometric representation.35
Table 1 – Power consumption in voltage circuits for single-phase and polyphase
meters including the power supply .11
Table 2 – Power consumption in current circuits.13
Table 3 – Variations due to short-time overcurrents .13
Table 4 – Variations due to self-heating .15
Table 5 – AC voltage tests .15
Table 6 – Percentage error limits (single-phase meters and polyphase meters with
balanced loads).17
Table 7 – Percentage error limits (polyphase meters carrying a single-phase load, but
with balanced polyphase voltages applied to voltage circuits) .17
Table 8 – Influence quantities .19
Table 9 – Starting current.23
Table 10 – Voltage and current balance .23
Table 11 – Reference conditions .25
Table 12 – Interpretation of test results .25
– 4 – 62053-23 CEI:2003
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
______________
ÉQUIPEMENT DE COMPTAGE DE L'ÉLECTRICITÉ (CA) –
PRESCRIPTIONS PARTICULIÈRES –
Partie 23: Compteurs statiques d'énergie réactive (classes 2 et 3)
AVANT-PROPOS
1) La CEI (Commission Électrotechnique Internationale) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI, entre autres activités, publie des Normes
internationales. Leur élaboration est confiée à des comités d'études, aux travaux desquels tout Comité national
intéressé par le sujet traité peut participer. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec la CEI, participent également aux travaux. La CEI collabore étroitement
avec l'Organisation Internationale de Normalisation (ISO), selon des conditions fixées par accord entre les
deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux intéressés
sont représentés dans chaque comité d’études.
3) Les documents produits se présentent sous la forme de recommandations internationales. Ils sont publiés
comme normes, spécifications techniques, rapports techniques ou guides et agréés comme tels par les
Comités nationaux.
4) Dans le but d'encourager l'unification internationale, les Comités nationaux de la CEI s'engagent à appliquer de
façon transparente, dans toute la mesure possible, les Normes internationales de la CEI dans leurs normes
nationales et régionales. Toute divergence entre la norme de la CEI et la norme nationale ou régionale
correspondante doit être indiquée en termes clairs dans cette dernière.
5) La CEI n’a fixé aucune procédure concernant le marquage comme indication d’approbation et sa responsabilité
n’est pas engagée quand un matériel est déclaré conforme à l’une de ses normes.
6) L’attention est attirée sur le fait que certains des éléments de la présente Norme internationale peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La Norme internationale CEI 62053-23 a été établie par le comité d'études 13 de la CEI:
Equipements de mesure de l'énergie électrique et de commande des charges.
Cette norme ainsi que la CEI 62052-11 annulent et remplacent la première édition de la
CEI 61268 (1995), dont elles constituent une révision technique.
Le texte de cette norme est issu des documents suivants:
FDIS Rapport de vote
13/1284/FDIS 13/1291/RVD
Le rapport de vote indiqué dans le Tableau ci-dessus donne toute information sur le vote
ayant abouti à l'approbation de cette norme.
Cette publication a été rédigée selon les Directives ISO/CEI, Partie 2.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant 2012.
A cette date, la publication sera
• reconduite;
• supprimée;
• remplacée par une édition révisée, ou
• amendée.
62053-23 IEC:2003 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
ELECTRICITY METERING EQUIPMENT (AC) –
PARTICULAR REQUIREMENTS –
Part 23: Static meters for reactive energy (classes 2 and 3)
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62053-23 has been prepared by IEC technical committee 13:
Equipment for electrical energy measurement and load control.
This standard together with IEC 62052-11 cancels and replaces IEC 61268 first edition (1995)
and constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
13/1284/FDIS 13/1291/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until 2012.
At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
– 6 – 62053-23 CEI:2003
INTRODUCTION
La présente partie de la CEI 62053 doit être utilisée avec les parties appropriées suivantes de
la série des normes CEI 62052, CEI 62053 et CEI 62059, Equipement de comptage de
l'électricité:
62052-11:2003, Equipement de comptage de l’électricité (c.a.) – Prescriptions générales,
essais et conditions d’essai – Partie 11: Equipement de comptage
62053-11:2003, Equipement de comptage de l'électricité (c.a.) – Prescriptions particulières
– Partie 11: Compteurs électromécaniques d'énergie active (classes
0,5, 1 et 2)
Remplace les prescriptions particulières de la CEI 60521 éd. 2, 1988
62053-21:2003, Equipement de comptage de l’électricité (c.a.) – Prescripitons particulières
– Partie 21: Compteurs statiques d'énergie active (classes 1 et 2)
Remplace les prescriptions particulières de la CEI 61036 éd. 2, 2000
62053-22:2003, Equipement de comptage de l’électricité (c.a.) – Prescriptions particulières
– Partie 22: Compteurs statiques d'énergie active (classes 0,2S et 0,5S)
Remplace les prescriptions particulières de la CEI 60687 éd. 2, 1992
62053-31:1998, Equipement de comptage de l’électricité (c.a.) – Prescriptions particulières
– Partie 31: Dispositifs de sortie d'impulsions pour compteurs
électromécaniques et électroniques (seulement deux fils)
62053-61:1998, Equipement de comptage de l’électricité (c.a.) – Prescriptions particulières
– Partie 61: Puissance absorbée et prescriptions de tension
62059-11:2002, Equipements de comptage de l'électricité – Sûreté de fonctionnement –
Partie 11: Concepts généraux
62059-21:2002, Equipements de comptage de l’électricité – Sûreté de fonctionnement –
Partie 21: Collecte des données de sûreté de fonctionnement des
compteurs à partir du terrain
Cette partie est une norme concernant les essais de type de compteurs d'électricité.
Elle couvre les prescriptions particulières valables pour les «compteurs normaux» utilisés
à l'intérieur et à l'extérieur. Elle ne traite pas les exécutions spéciales (élément de mesure et
affichage dans des boîtiers séparés).
La présente norme est prévue pour être utilisée conjointement avec la CEI 62052-11. Chaque
exigence de cette norme prime sur celle de la CEI 62052-11, quand elle a déjà été traitée
dans la CEI 62052-11.
La présente norme fait la distinction:
– entre compteurs de classe de précision 2 et de classe de précision 3;
– entre compteurs avec classe de protection I et II;
– entre compteurs pour usage en réseaux équipés ou non de neutraliseurs de défauts de terre.
Les niveaux d'essai sont considérés comme des valeurs minimales à respecter pour garantir
chaque fonction du compteur dans les conditions normales de fonctionnement. Pour une
application spéciale, d'autres niveaux de sévérité qui pourraient être nécessaires seront fixés
d'un commun accord entre l'utilisateur et le fabricant.
62053-23 IEC:2003 – 7 –
INTRODUCTION
This part of IEC 62053 is to be used with relevant parts of the IEC 62052, IEC 62053 and
IEC 62059 series, Electricity metering equipment:
IEC 62052-11:2003, Electricity metering equipment (a.c.) – General requirements, tests
and test conditions – Part 11: Metering equipment
IEC 62053-11:2003, Electricity metering equipment (a.c.) – Particular requirements – Part
11: Electromechanical meters for active energy (classes 0,5, 1 and 2)
nd
Replaces particular requirements of IEC 60521: 1988 (2 edition)
IEC 62053-21:2003, Electricity metering equipment (a.c.) – Particular requirements –
Part 21: Static meters for active energy (classes 1 and 2)
nd
Replaces particular requirements of IEC 61036: 2000 (2 edition)
IEC 62053-22:2003, Electricity metering equipment (a.c.) – Particular requirements –
Part 22: Static meters for active energy (classes 0,2 S and 0,5 S)
nd
Replaces particular requirements of IEC 60687: 1992 (2 edition)
IEC 62053-31:1998, Electricity metering equipment (a.c.) – Particular requirements –
Part 31: Pulse output devices for electromechanical and electronic
meters (two wires only)
IEC 62053-61:1998, Electricity metering equipment (a.c.) – Particular requirements –
Part 61: Power consumption and voltage requirements
IEC 62059-11:2002, Electricity metering equipment (a.c.) – Dependability – Part 11:
General concepts
IEC 62059-21:2002, Electricity metering equipment (a.c.) – Dependability – Part 21:
Collection of meter dependability data from the field
This part is a standard for type testing electricity meters. It covers the particular requirements
for meters, being used indoors and outdoors. It does not deal with special implementations
(such as metering-part and/or displays in separate housings).
This standard is intended to be used in conjunction with IEC 62052-11. When any requirement
in this standard concerns an item already covered in IEC 62052-11, the requirements of this
standard take precedence over the requirements of IEC 62052-11.
This standard distinguishes:
– between accuracy class index 2 and accuracy class index 3 meters;
– between protective class I and protective class II meters;
– between meters for use in networks equipped with or without earth fault neutralizers.
The test levels are regarded as minimum values that provide for the proper functioning of the
meter under normal working conditions. For special application, other test levels might be
necessary and should be agreed on between the user and the manufacturer.
– 8 – 62053-23 CEI:2003
ÉQUIPEMENT DE COMPTAGE DE L'ÉLECTRICITÉ (CA) –
PRESCRIPTIONS PARTICULIÈRES –
Partie 23: Compteurs statiques d'énergie réactive (classes 2 et 3)
1 Domaine d'application
La présente partie de la CEI 62053 est applicable uniquement aux compteurs statiques
d'énergie réactive neufs des classes de précision 2 et 3, destinés à la mesure de l'énergie
électrique réactive en courant alternatif sur les réseaux électriques en 50 Hz et 60 Hz, et à
leurs essais de type. Pour des raisons pratiques, cette norme est basée sur une définition
conventionnelle de l’énergie réactive pour intensités et tensions sinusoïdales contenant
seulement la fréquence fondamentale.
Elle n'est applicable qu'aux compteurs statiques d'énergie réactive de types intérieur et
extérieur constitués d'un élément de mesure et d'un (des) élément(s) indicateur(s) rassemblés
dans un même boîtier. Elle s'applique également à (aux) l'indicateur(s) de fonctionnement et
au(x) dispositif(s) de contrôle. Si le compteur a un élément de mesure pour plusieurs types
d’énergie (compteurs à énergie multiple), ou si d’autres éléments fonctionnels comme
indicateurs de maximum, éléments indicateurs tarifaires électroniques, horloges de contact,
récepteurs de télécommande centralisée, interfaces de communication de données, etc. sont
encastrés dans le boîtier du compteur, les normes relatives à ces éléments sont applicables.
Elle n'est pas applicable:
– aux compteurs d'énergie réactive dont la tension entre bornes de connexion dépasse
600 V (entre phases dans le cas des compteurs polyphasés);
– aux compteurs portatifs;
– aux interfaces de communication avec l'élément indicateur du compteur;
– aux compteurs de référence.
L’aspect d’endurance est l’objet des normes de la série CEI 62059.
2 Références normatives
Les documents de référence suivants sont indispensables pour l'application du présent
document. Pour les références datées, seule l'édition citée s'applique. Pour les références
non datées, la dernière édition du document de référence s'applique (y compris les éventuels
amendements).
CEI 60736:1982, Equipement d'étalonnage de compteurs d'énergie électrique
CEI 62052-11:2003, Equipement de comptage de l'électricité (c.a.) – Prescriptions générales,
essais et conditions d’essai – Partie 11: Equipement de comptage
CEI 62053-61:1998, Equipement de comptage de l’électricité (c.a.) – Prescriptions parti-
culières – Puissance absorbée et prescriptions de tension
3 Termes et définitions
Pour les besoins du présent document, les termes et définitions donnés dans la CEI 62052-11
s’appliquent.
NOTE Pour les directions et symbole de la puissance réactive, voir l’Annexe C.
62053-23 IEC:2003 – 9 –
ELECTRICITY METERING EQUIPMENT (AC) –
PARTICULAR REQUIREMENTS –
Part 23: Static meters for reactive energy (classes 2 and 3)
1 Scope
This part of IEC 62053 applies only to newly manufactured static var-hour meters of accuracy
classes 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. For practical reasons, this standard is
based on a conventional definition of reactive energy for sinusoidal currents and voltages
containing the fundamental frequency only.
It applies only to static var-hour meters for indoor and outdoor application consisting of a
measuring element and register(s) enclosed together in a meter case. It also applies to
operation indicator(s) and test output(s). If the meter has a measuring element for more than
one type of energy (multi-energy meters), or when other functional elements, like maximum
demand indicators, electronic tariff registers, time switches, ripple control receivers, data
communication interfaces, etc. are enclosed in the meter case, then the relevant standards
for these elements also apply.
It does not apply to:
– var-hour meters where the voltage across the connection terminals exceeds 600 V (line-
to-line voltage for meters for polyphase systems);
– portable meters;
– data interfaces to the register of the meter;
– reference meters.
The dependability aspect is covered by the documents of the IEC 62059 series.
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60736:1982, Testing equipment for electrical energy meters
IEC 62052-11:2003, Electricity metering equipment (a.c.) – General requirements, tests and
test conditions – Part 11: Metering equipment
IEC 62053-61:1998, Electricity metering equipment (a.c.) – General requirements, tests and
test conditions – Power consumption and voltage requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62052-11 apply.
NOTE For direction of flow and sign of reactive power, see Annex C.
– 10 – 62053-23 CEI:2003
4 Valeurs électriques normales
Les valeurs données dans la CEI 62052-11 s’appliquent.
5 Prescriptions mécaniques
Les prescriptions de la CEI 62052-11 s’appliquent.
6 Conditions climatiques
Les conditions données dans la CEI 62052-11 s’appliquent.
7 Prescriptions électriques
En plus des prescriptions électriques de la CEI 62052-11, les compteurs doivent satisfaire
aux prescriptions suivantes.
7.1 Consommation
La consommation dans le circuit de tension et le circuit de courant doit être déterminée aux
conditions de référence données en 8.5, à l'aide de toute méthode appropriée. L'erreur
maximale totale de la mesure de la consommation ne doit pas excéder 5 %.
7.1.1 Circuits de tension
La puissance active et la puissance apparente absorbées par chaque circuit de tension, sous
la tension de référence, à la fréquence de référence et à la température de référence, ne
doivent pas dépasser les valeurs indiquées dans le Tableau 1.
Tableau 1 – Puissance absorbée dans le circuit de tension pour les compteurs
monophasés et polyphasés y compris l'alimentation
Alimentation connectée Alimentation non connectée
Compteurs
aux circuits de tension aux circuits de tension
Circuit de tension 2 W et 10 VA 0,5 VA
Alimentation auxiliaire – 10 VA
NOTE 1 Pour adapter les transformateurs de tension aux compteurs, il convient que le constructeur de comp-
teurs précise si la charge est inductive ou capacitive (seulement pour compteurs alimentés par transformateurs).
NOTE 2 Les valeurs du Tableau sont des valeurs moyennes. Des valeurs de pointes à la mise sous tension
excédant ces valeurs spécifiées sont permises, mais il y a lieu de s'assurer que la puissance des transformateurs
de tension associés est adéquate.
NOTE 3 Pour les compteurs multifonction, voir la CEI 62053-61.
7.1.2 Circuits de courant
La puissance apparente absorbée par chaque circuit de courant d'un compteur à
branchement direct, pour le courant de base, la fréquence de référence et la température de
référence, ne doit pas dépasser les valeurs indiquées dans le Tableau 2.
La puissance apparente absorbée par chaque circuit de courant d'un compteur alimenté par
un transformateur de courant ne doit pas dépasser la valeur indiquée dans le Tableau 2 pour
une valeur de courant égale à celle du courant secondaire assigné du transformateur
correspondant, à la température et à la fréquence de référence du compteur.
62053-23 IEC:2003 – 11 –
4 Standard electrical values
The values given in IEC 62052-11 apply.
5 Mechanical requirements
The requirements of IEC 62052-11 apply.
6 Climatic conditions
The conditions given in IEC 62052-11 apply.
7 Electrical requirements
In addition to the electrical requirements in IEC 62052-11, meters shall fulfil the following
requirements.
7.1 Power consumption
The power consumption in the voltage and current circuit shall be determined at reference
values of the influence quantities given in 8.5 by any suitable method. The overall maximum
error of the measurement of the power consumption shall not exceed 5 %.
7.1.1 Voltage circuits
The active and apparent power consumption in each voltage circuit of a meter at reference
voltage, reference temperature and reference frequency shall not exceed the values shown
in Table 1.
Table 1 – Power consumption in voltage circuits for single-phase
and polyphase meters including the power supply
Power supply connected Power supply not connected
Meters
to the voltage circuits to the voltage circuits
Voltage circuit 2 W and 10 VA 0,5 VA
Auxiliary power supply – 10 VA
NOTE 1 In order to match voltage transformers to meters, the meter manufacturer should state whether the
burden is inductive or capacitive (for transformer operated meters only).
NOTE 2 The above figures are mean values. Switching power supplies with peak values in excess of these
specified values are permitted, but it should be ensured that the rating of associated voltage transformers is
adequate.
NOTE 3 For multifunctional meters, see IEC 62053-61.
7.1.2 Current circuits
The apparent power taken by each current circuit of a direct connected meter at basic current,
reference frequency and reference temperature shall not exceed the values shown in Table 2.
The apparent power taken by each current circuit of a meter connected through a current
transformer shall not exceed the value shown in Table 2, at a current value that equals the
rated secondary current of the corresponding transformer, at reference temperature and
reference frequency of the meter.
– 12 – 62053-23 CEI:2003
Tableau 2 – Puissance absorbée dans le circuit de courant
Classe du compteur
Compteurs
Monophasés et polyphasés 5,0 VA 5,0 VA
NOTE 1 Le courant secondaire assigné est la valeur du courant secondaire d'un transformateur de courant qui
figure dans la désignation du transformateur et d'après laquelle sont déterminées ses conditions de
fonctionnement. Les valeurs normales des courants secondaires maximaux sont égales à 120 %, 150 % et 200 %
du courant secondaire assigné.
NOTE 2 Pour adapter les transformateurs de courant aux compteurs, il convient que le constructeur de comp-
teurs précise si la charge est inductive ou capacitive (seulement pour compteurs alimentés par transformateurs).
7.2 Influence des surintensités de courte durée
Les surintensités de courte durée ne doivent pas détériorer le compteur. Dès le retour aux
conditions initiales, le compteur doit fonctionner correctement et les variations d’erreur ne
doivent pas excéder les valeurs indiquées au Tableau 3.
Le circuit d'essai doit être pratiquement non inductif et l’essai doit être réalisé phase par
phase pour les compteurs polyphasés.
Après l'application de la surintensité de courte durée, la tension étant maintenue aux bornes
du compteur, on doit laisser celui-ci au repos pendant le temps suffisant pour qu'il puisse
retrouver la température initiale avec le ou les circuits de tension alimentés (environ 1 h).
a) Compteurs à branchement direct
Ces compteurs doivent être capables de supporter une surintensité de courte durée de
30 I avec une tolérance relative de +0 % à –10 % durant un demi cycle à la fréquence
max
assignée.
b) Compteurs alimentés par transformateurs d’intensité
Ces compteurs doivent être capables de supporter pendant 0,5 s un courant égal à
20 I avec une tolérance relative de +0 % à –10 %.
max
NOTE Cet essai n'est pas applicable aux compteurs ayant un contact dans les circuits de courant. Pour ce cas,
voir les normes appropriées.
Tableau 3 – Variations dues aux surintensités de courte durée
Limites des variations d'erreur en
sinϕϕ
ϕϕ
Valeur du
pourcentage pour compteurs de classe
Compteurs
(inductif ou
courant
capacitif)
A branchement direct I 11,5 1,5
b
Alimentés par trans-
I 11,0 1,5
n
formateurs de courant
7.3 Influence de l'échauffement propre
La variation de l'erreur due à l'échauffement propre ne doit pas dépasser les valeurs
indiquées dans le Tableau 4.
62053-23 IEC:2003 – 13 –
Table 2 – Power consumption in current circuits
Meters Class of meter
Single-phase and polyphase 5,0 VA 5,0 VA
NOTE 1 The rated secondary current is the value of the secondary current indicated on the current transformer,
on which the performance of the transformer is based. Standard values of maximum secondary current are 120 %,
150 % and 200 % of the rated secondary current.
NOTE 2 In order to match current transformers to meters, the meter manufacturer should state whether the
burden is inductive or capacitive (for transformer operated meters only).
7.2 Influence of short-time overcurrents
Short-time overcurrents shall not damage the meter. The meter shall perform correctly when
back to its initial working condition and the variation of error shall not exceed the values
shown in Table 3.
The test circuit shall be practically non-inductive and the test shall be performed for
polyphase meters phase-by-phase.
After the application of the short-time overcurrent with the voltage maintained at the terminals,
the meter shall be allowed to return to the initial temperature with the voltage circuit(s)
energized (about 1 h).
a) Meter for direct connection
The meter shall be able to carry a short-time overcurrent of 30 I with a relative
max
tolerance of +0 % to –10 % for one half-cycle at rated frequency.
b) Meter for connection through current transformer
The meter shall be able to carry for 0,5 s a current equal to 20 I with a relative
max
tolerance of +0 % to –10 %.
NOTE This requirement does not apply to meters having a contact in the current circuits. For this case, see
appropriate standards.
Table 3 – Variations due to short-time overcurrents
Limits of variations in percentage
sinϕϕϕϕ
error for meters of class
Meters for Value of current (inductive or
capacitive)
Direct connection I 11,5 1,5
b
Connection through
I 11,0 1,5
n
current transformers
7.3 Influence of self-heating
The variation of error due to self-heating shall not exceed the values given in Table 4.
– 14 – 62053-23 CEI:2003
Tableau 4 – Variations dues à l'échauffement propre
Limites des variations d'erreur en pourcentage
sinϕϕϕϕ
pour compteurs de classe
Valeur du courant
(inductif ou capacitif)
11,0 1,5
I
max
0,5 1,5 2,0
L'essai doit être effectué comme suit: le compteur, après avoir été préalablement maintenu
sous tension de référence pendant au moins 1 h pour la classe 2 et 3, les circuits de courant
n'étant pas alimentés, est mis en service sous le courant maximal. L'erreur du compteur doit
être mesurée avec sinϕ = 1, immédiatement après la mise en service et ensuite à intervalles
suffisamment courts afin de permettre un tracé correct de la courbe de variation d'erreur en
fonction du temps. L'essai doit être poursuivi pendant au moins 1 h et, en tout cas, jusqu'à ce
que la variation relevée sur une durée de 20 min ne dépasse pas 0,2 %.
Le même essai doit être ensuite effectué avec sinϕ = 0,5 (inductif ou capacitif).
Le câble utilisé pour l'alimentation du compteur doit avoir une longueur de 1 m et une section
assurant une densité de courant comprise entre 3,2 A/mm et 4 A/mm .
7.4 Essai à la tension alternative
Les essais à la tension alternative doivent être effectués conformément au Tableau 5.
La tension d'essai doit être pratiquement sinusoïdale, de fréquence comprise entre 45 Hz et
65 Hz, et appliquée pendant 1 min. La puissance de la source ne doit pas être inférieure
à 500 VA.
Lors des essais par rapport à la masse, les circuits auxiliaires dont la tension de référence est
inférieure ou égale à 40 V doivent être reliés à la masse.
Tous ces essais doivent être exécutés avec le boîtier fermé, le couvercle et le couvre-bornes
en place.
Pendant cet essai, aucun contournement ou amorçage ni aucune perforation ne doivent se
produire.
Tableau 5 – Essais à la tension alternative
Valeur efficace
Essai Applicable aux de la tension Points d’application de la tension d’essai
d’essai
a) Entre, d'une part, tous les circuits de courant et de tension
ainsi que les circuits auxiliaires dont la tension de référence
2 kV
Compteurs de
est sup
...
IEC 62053-23 ®
Edition 1.1 2016-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering equipment (a.c.) – Particular requirements –
Part 23: Static meters for reactive energy (classes 2 and 3)
Equipement de comptage de l'électricité (c.a.) – Prescriptions particulières –
Partie 23: Compteurs statiques d'énergie réactive (classes 2 et 3)
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IEC 62053-23 ®
Edition 1.1 2016-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Electricity metering equipment (a.c.) – Particular requirements –
Part 23: Static meters for reactive energy (classes 2 and 3)
Equipement de comptage de l'électricité (c.a.) – Prescriptions particulières –
Partie 23: Compteurs statiques d'énergie réactive (classes 2 et 3)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-3772-4
IEC 62053-23 ®
Edition 1.1 2016-11
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Electricity metering equipment (a.c.) – Particular requirements –
Part 23: Static meters for reactive energy (classes 2 and 3)
Equipement de comptage de l'électricité (c.a.) – Prescriptions particulières –
Partie 23: Compteurs statiques d'énergie réactive (classes 2 et 3)
– 2 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
INTRODUCTION TO AMENDMENT 1 . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Standard electrical values . 9
5 Mechanical requirements . 9
6 Climatic conditions . 9
7 Electrical requirements . 9
7.1 Power consumption . 9
7.2 Influence of short-time overcurrents . 10
7.3 Influence of self-heating . 10
7.4 AC voltage test . 11
8 Accuracy requirements . 12
8.1 Limits of error due to variation of the current . 12
8.2 Limits of error due to influence quantities . 12
8.3 Test of starting and no-load condition . 14
8.4 Meter constant . 15
8.5 Accuracy test conditions . 15
8.6 Interpretation of test results . 16
Annex A (normative) Test circuit diagram for d.c. component . 17
Annex B (normative) Electromagnet for testing the influence of externally produced
magnetic fields . 19
Annex C (informative) Geometric representation of active and reactive power . 20
Figure A.1 – Test circuit diagram for half-wave rectification . 17
Figure A.2 – Half-wave rectified waveform . 18
Figure B.1 – Electromagnet for testing the influence of externally produced magnetic
fields. 19
Figure C.1 – Recommended geometric representation . 20
Figure C.2 – Alternative geometric representation . 21
Table 1 – Power consumption in voltage circuits for single-phase and polyphase
meters including the power supply . 9
Table 2 – Power consumption in current circuits . 10
Table 3 – Variations due to short-time overcurrents . 10
Table 4 – Variations due to self-heating . 11
Table 5 – AC voltage tests .
Table 6 – Percentage error limits (single-phase meters and polyphase meters with
balanced loads) . 12
Table 7 – Percentage error limits (polyphase meters carrying a single-phase load, but
with balanced polyphase voltages applied to voltage circuits) . 12
Table 8 – Influence quantities . 13
IEC 2016
Table 9 – Starting current . 15
Table 10 – Voltage and current balance . 15
Table 11 – Reference conditions . 16
Table 12 – Interpretation of test results . 16
– 4 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
ELECTRICITY METERING EQUIPMENT (AC) –
PARTICULAR REQUIREMENTS –
Part 23: Static meters for reactive energy (classes 2 and 3)
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 62053-23 edition 1.1 contains the first edition (2003-01) [documents 13/1284/FDIS and
13/1291/RVD] and its amendment 1 (2016-11) [documents 13/1696/FDIS and 13/1710/RVD].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
© IEC 2016
International Standard IEC 62053-23 has been prepared by IEC technical committee 13:
Equipment for electrical energy measurement and load control.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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
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 4 years from the date of publication.
The contents of the corrigendum of March 2018 have been included in this copy.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 6 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
INTRODUCTION
This part of IEC 62053 is to be used with relevant parts of the IEC 62052, IEC 62053 and
IEC 62059 series, Electricity metering equipment:
IEC 62052-11:2003, Electricity metering equipment (AC) – General requirements, tests and
test conditions – Part 11: Metering equipment
Amendment 1 (2016)
IEC 62052-31:2015, Electricity metering equipment (AC) – General requirements, tests and
test conditions –Part 31: Product safety requirements and tests
IEC 62053-11:2003, Electricity metering equipment (a.c.) – Particular requirements – Part
11: Electromechanical meters for active energy (classes 0,5 ,1 and 2). Replaces particular
nd
requirements of IEC 60521:1988 (2 edition)
IEC 62053-21:2003, Electricity metering equipment (a.c.) – Particular requirements –
Part 21: Static meters for active energy (classes 1 and 2). Replaces particular requirements of
nd
IEC 61036:2000 (2 edition)
IEC 62053-22:2003, Electricity metering equipment (a.c.) – Particular requirements –
Part 22: Static meters for active energy (classes 0,2 S and 0,5 S). Replaces particular
nd
requirements of IEC 60687:1992 (2 edition)
IEC 62053-31:1998, Electricity metering equipment (a.c.) – Particular requirements –
Part 31: Pulse output devices for electromechanical and electronic meters (two wires only)
IEC 62053-61:1998, Electricity metering equipment (a.c.) – Particular requirements –
Part 61: Power consumption and voltage requirements
IEC 62059-11:2002, Electricity metering equipment (a.c.) – Dependability – Part 11: General
concepts
IEC 62059-21:2002, Electricity metering equipment (a.c.) – Dependability – Part 21:
Collection of meter dependability data from the field
This part is a standard for type testing electricity meters. It covers the particular requirements
for meters, being used indoors and outdoors. It does not deal with special implementations
(such as metering-part and/or displays in separate housings).
This standard is intended to be used in conjunction with IEC 62052-11. When any requirement
in this standard concerns an item already covered in IEC 62052-11, the requirements of this
standard take precedence over the requirements of IEC 62052-11.
This standard distinguishes:
– between accuracy class index 2 and accuracy class index 3 meters;
– between protective class I and protective class II meters;
– between meters for use in networks equipped with or without earth fault neutralizers.
The test levels are regarded as minimum values that provide for the proper functioning of the
meter under normal working conditions. For special application, other test levels might be
necessary and should be agreed on between the user and the manufacturer.
IEC 2016
INTRODUCTION TO AMENDMENT 1
The purpose of this amendment is to identify and remove all safety related requirements and
tests of IEC 62053-23:2003 that are replaced and extended by the complete set of
requirements and tests in IEC 62052-31:2015.
– 8 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
ELECTRICITY METERING EQUIPMENT (AC) –
PARTICULAR REQUIREMENTS –
Part 23: Static meters for reactive energy (classes 2 and 3)
1 Scope
This part of IEC 62053 applies only to newly manufactured static var-hour meters of accuracy
classes 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. For practical reasons, this standard is
based on a conventional definition of reactive energy for sinusoidal currents and voltages
containing the fundamental frequency only.
It applies only to static var-hour meters for indoor and outdoor application consisting of a
measuring element and register(s) enclosed together in a meter case. It also applies to
operation indicator(s) and test output(s). If the meter has a measuring element for more than
one type of energy (multi-energy meters), or when other functional elements, like maximum
demand indicators, electronic tariff registers, time switches, ripple control receivers, data
communication interfaces, etc. are enclosed in the meter case, then the relevant standards
for these elements also apply.
It does not apply to:
– var-hour meters where the voltage across the connection terminals exceeds 600 V (line-
to-line voltage for meters for polyphase systems);
– portable meters;
– data interfaces to the register of the meter;
– reference meters.
The dependability aspect is covered by the documents of the IEC 62059 series.
.
The safety aspect is covered by IEC 62052-31:2015
2 Normative references
The following referenced documents are indispensable for the application 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.
IEC 60736:1982, Testing equipment for electrical energy meters
IEC 62052-11:2003, Electricity metering equipment (a.c.) – General requirements, tests and
test conditions – Part 11: Metering equipment
Amendment 1 (2016)
IEC 62052-31:2015, Electricity metering equipment (AC) – General requirements, tests and
test conditions – Part 31: Product safety requirements and tests
IEC 62053-61:1998, Electricity metering equipment (a.c.) – General requirements, tests and
test conditions – Power consumption and voltage requirements
IEC 2016
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62052-11 apply.
NOTE For direction of flow and sign of reactive power, see Annex C.
4 Standard electrical values
The values given in IEC 62052-11 apply.
5 Mechanical requirements
The requirements of IEC 62052-11 apply.
6 Climatic conditions
The conditions given in IEC 62052-11 apply.
7 Electrical requirements
In addition to the electrical requirements in IEC 62052-11, meters shall fulfil the following
requirements.
7.1 Power consumption
The power consumption in the voltage and current circuit shall be determined at reference
values of the influence quantities given in 8.5 by any suitable method. The overall maximum
error of the measurement of the power consumption shall not exceed 5 %.
7.1.1 Voltage circuits
The active and apparent power consumption in each voltage circuit of a meter at reference
voltage, reference temperature and reference frequency shall not exceed the values shown
in Table 1.
Table 1 – Power consumption in voltage circuits for single-phase
and polyphase meters including the power supply
Power supply connected Power supply not connected
Meters
to the voltage circuits to the voltage circuits
Voltage circuit 2 W and 10 VA 0,5 VA
Auxiliary power supply – 10 VA
NOTE 1 In order to match voltage transformers to meters, the meter manufacturer should state whether the
burden is inductive or capacitive (for transformer operated meters only).
NOTE 2 The above figures are mean values. Switching power supplies with peak values in excess of these
specified values are permitted, but it should be ensured that the rating of associated voltage transformers is
adequate.
NOTE 3 For multifunctional meters, see IEC 62053-61.
7.1.2 Current circuits
The apparent power taken by each current circuit of a direct connected meter at basic current,
reference frequency and reference temperature shall not exceed the values shown in Table 2.
– 10 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
The apparent power taken by each current circuit of a meter connected through a current
transformer shall not exceed the value shown in Table 2, at a current value that equals the
rated secondary current of the corresponding transformer, at reference temperature and
reference frequency of the meter.
Table 2 – Power consumption in current circuits
Meters Class of meter
2 3
Single-phase and polyphase 5,0 VA 5,0 VA
NOTE 1 The rated secondary current is the value of the secondary current indicated on the current transformer,
on which the performance of the transformer is based. Standard values of maximum secondary current are 120 %,
150 % and 200 % of the rated secondary current.
NOTE 2 In order to match current transformers to meters, the meter manufacturer should state whether the
burden is inductive or capacitive (for transformer operated meters only).
7.2 Influence of short-time overcurrents
Short-time overcurrents shall not damage the meter. The meter shall perform correctly when
back to its initial working condition and the variation of error shall not exceed the values
shown in Table 3.
The test circuit shall be practically non-inductive and the test shall be performed for
polyphase meters phase-by-phase.
After the application of the short-time overcurrent with the voltage maintained at the terminals,
the meter shall be allowed to return to the initial temperature with the voltage circuit(s)
energized (about 1 h).
a) Meter for direct connection
The meter shall be able to carry a short-time overcurrent of 30 I with a relative
max
tolerance of +0 % to –10 % for one half-cycle at rated frequency.
b) Meter for connection through current transformer
The meter shall be able to carry for 0,5 s a current equal to 20 I with a relative
max
tolerance of +0 % to –10 %.
NOTE This requirement does not apply to meters having a contact in the current circuits. For this case, see
appropriate standards.
Table 3 – Variations due to short-time overcurrents
Limits of variations in percentage
sinϕ
error for meters of class
Meters for Value of current (inductive or
capacitive)
2 3
Direct connection I 1 1,5 1,5
b
Connection through
I 1 1,0 1,5
n
current transformers
In addition to the existing requirements and tests covering the metrology aspect, safety
related requirements specified in IEC 62052-31:2015, 6.9.8 and tests specified in 6.10.5 and
6.10.6 apply.
7.3 Influence of self-heating
The variation of error due to self-heating shall not exceed the values given in Table 4.
IEC 2016
Table 4 – Variations due to self-heating
Limits of variations in percentage error
sinϕ
for meters of class
Value of current
(inductive or capacitive)
2 3
1 1,0 1,5
I
max
0,5 1,5 2,0
The test shall be carried out as follows: After the voltage circuits have been energized at
reference voltage for at least 1 h for class 2 and 3, without any current in the current circuits,
the maximum current shall be applied to the current circuits. The meter error shall be
measured at sinϕ = 1 immediately after the current is applied and then at intervals short
enough to allow a correct drawing to be made of the curve of error variation as a function of
time. The test shall be carried out for at least 1 h, and in any event until the variation of error
during 20 min does not exceed 0,2 %.
The same test shall then be carried out at sinϕ = 0,5 (inductive or capacitive).
The cable to be used for energizing the meter shall have a length of 1 m and a cross-section
to ensure that the current density is between 3,2 A/mm and 4 A/mm .
Test cables shall be as specified in IEC 62052-31:2015, 4.3.2.11.
7.4 AC voltage test
The a.c. voltage test shall be carried out in accordance with Table 5.
The test voltage shall be substantially sinusoidal, having a frequency between 45 Hz and
65 Hz, and applied for 1 min. The power source shall be capable of supplying at least 500 VA.
During the tests relative to earth, the auxiliary circuits with reference voltage equal to or
below 40 V shall be connected to earth.
All these tests shall be carried out with the case closed and the cover and terminal covers in
place.
During this test, no flashover, disruptive discharge or puncture shall occur.
Table 5 – AC voltage tests
Test voltage
Test Applicable to Points of application of the test voltage
r.m.s
a) Between, on the one hand, all the current and voltage
circuits as well as the auxiliary circuits whose reference
2 kV
voltage is over 40 V, connected together, and, on the
Protective class I
A
other hand, earth
meters
b) Between circuits not intended to be connected together
2 kV
in service
a) Between, on the one hand, all the current and voltage
circuits as well as the auxiliary circuits whose reference
4 kV
voltage is over 40 V, connected together, and, on the
other hand, earth
Protective class II
B
meters b) Between circuits not intended to be connected together
2 kV
in service
c) A visual inspection for compliance with the conditions of
–
5.7 of IEC 62052-11
– 12 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
IEC 62052-31:2015, 6.10.4.3.4 applies.
8 Accuracy requirements
The tests and test conditions given in IEC 62052-11 apply.
8.1 Limits of error due to variation of the current
When the meter is under the reference conditions given in 8.5, the percentage errors shall not
exceed the limits for the relevant accuracy class given in Tables 6 and 7.
Table 6 – Percentage error limits
(single-phase meters and polyphase meters with balanced loads)
Percentage error limits
Value of current
sinϕ
for meters of class
(inductive or
for direct connected for transformer operated
capacitive)
2 3
meters meters
1 ±2,5 ±4,0
0,05 I ≤ I < 0,1 I 0,02 I ≤ I < 0,05 I
b b n n
0,1 I ≤ I ≤ I 0,05 I ≤ I ≤ I 1 ±2,0 ±3,0
b max n max
0,5 ±2,5 ±4,0
0,1 I ≤ I < 0,2 I 0,05 I ≤ I < 0,1 I
b b n n
0,2 I ≤ I ≤ I 0,1 I ≤ I ≤ I 0,5 ±2,0 ±3,0
b max n max
0,25 ±2,5 ±4,0
0,2 I ≤ I ≤ I 0,1 I ≤ I ≤ I
b max n max
Table 7 – Percentage error limits (polyphase meters carrying a single-phase load,
but with balanced polyphase voltages applied to voltage circuits)
Percentage error limits
Value of current
sinϕ
for meters of class
(inductive or
for direct connected for transformer
capacitive)
2 3
meters operated meters
1 ± 3,0 ± 4,0
0,1 I ≤ I ≤ I 0,05 I ≤ I ≤ I
b max n max
0,2 I ≤ I ≤ I 0,1 I ≤ I ≤ I 0,5 ± 3,0 ± 4,0
b max n max
The difference between the percentage error when the meter is carrying a single-phase load
and a balanced polyphase load at basic current I and sinϕ = 1 for direct connected meters,
b
respectively at rated current I and sinϕ = 1 for transformer operated meters, shall not exceed
n
2,5 % and 3,5 % for meters of classes 2 and 3 respectively.
NOTE When testing for compliance with Table 7, the test current should be applied to each measuring element in
sequence.
8.2 Limits of error due to influence quantities
The additional percentage error due to the change of influence quantities with respect to
reference conditions, as given in 8.5, shall not exceed the limits for the relevant accuracy
class given in Table 8.
IEC 2016
Table 8 – Influence quantities
Value of current
Mean temperature
(balanced unless otherwise stated) sinϕ
coefficient %/K for meters
Influence quantity (inductive or
of class
for direct for transformer-
capacitive)
connected meters operated meters
2 3
Ambient temperature 0,1 I ≤ I ≤ I 0,05 I ≤ I ≤ I 1 0,10 0,15
b max n max
7)
variation
0,5 0,15 0,25
0,2 I ≤ I ≤ I 0,1 I ≤ I ≤ I
b max n max
Limits of variation in
percentage error for
meters of class
2 3
Voltage variation 1 1,0 2,0
0,05 I ≤ I ≤ I 0,02 I ≤ I ≤ I
b max n max
1) 2)
±10 %
0,5 1,5 3,0
0,1 I ≤ I ≤ I 0,05 I ≤ I ≤ I
b max n max
Frequency variation 0,05 I ≤ I ≤ I 0,02 I ≤ I ≤ I 1 2,5 2,5
b max n max
2)
±2 %
0,5 2,5 2,5
0,1 I ≤ I ≤ I 0,05 I ≤ I ≤ I
b max n max
DC component in the
I
max
3) – 1 6,0 6,0
current circuit
Continuous magnetic I I 1 3,0 3,0
b n
induction of external
4)
origin
Magnetic induction of I I 1 3,0 3,0
b n
external origin
5)
0,5 mT
Electromagnetic RF fields I I 1 3,0 3,0
b n
Operation of 0,05 I 0,05 I 1 1,0 1,0
b n
6)
accessories
Conducted disturbances, I I 1 3,0 3,0
b n
induced by radio-
frequency fields
Fast transient burst I I 1 4,0 4,0
b n
Damped oscillatory waves – I 1 4,0 4,0
n
8)
immunity
1)
For the voltage ranges from –20 % to –10 % and +10 % to +15 %, the limits of variation in percentage errors are
three times the values given in this Table.
Below 0,8 U the error of the meter may vary between +10 % and –100 %.
n
2)
The recommended test point for voltage variation and frequency variation is I I
b for direct connected meters and n
for transformer operated meters.
3)
The purpose of this test is to check for current sensor saturation only.
This test does not apply to transformer-operated meters. The test conditions are specified in Annex A. The
distortion factor of the voltage shall be less than 1 %.
4)
The test conditions are specified in 8.2.2.
5)
A magnetic induction of external origin of 0,5 mT produced by a current of the same frequency as that of the
voltage applied to the meter and under the most unfavourable conditions of phase and direction shall not cause a
variation in the percentage error of the meter exceeding the values shown in this Table.
The magnetic induction shall be obtained by placing the meter in the centre of a circular coil, 1 m in mean
diameter, of square section and of small radial thickness relative to the diameter, and having 400 At.
6)
Such an accessory, when enclosed in the meter case, is energized intermittently, for example the electromagnet
of a multi-rate register.
It is preferable that the connection to the auxiliary device(s) is marked to indicate the correct method of
connection. If these connections are made by means of plugs and sockets, they should not be interchangeable.
7)
The mean temperature coefficient shall be determined for the whole operating range. The operating temperature
range shall be divided into 20 K wide ranges. The mean temperature coefficient shall then be determined for
these ranges, by taking measurements10 K above and 10 K below the middle of the range. During the test, the
temperature shall be in no case outside the specified operating temperature range.
8)
This test only applies to transformer-operated meters.
– 14 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
Tests for variation caused by influence quantities should be performed independently with all
other influence quantities at their reference conditions (see Table 11).
8.2.1 Tests of the influence of d.c. component in the current circuit
The tests of the influence of d.c. component in the current circuit shall be made with the
circuit shown in Figure A.1 or with other equipment able to generate the required wave-forms,
and the current wave-forms as shown in Figure A.2.
The variation in percentage error when the meter is subjected to the test wave-form given in
Figure A.2 and when it is subjected to the reference wave-form shall not exceed the limits of
variation given in Table 8.
NOTE The values given in the Figures are for 50 Hz only. For other frequencies the values have to be adapted
accordingly.
8.2.2 Continuous magnetic induction of external origin
The continuous magnetic induction may be obtained by using the electromagnet according to
Annex B, energized with a d.c. current. This magnetic field shall be applied to all accessible
surfaces of the meter when it is mounted as for normal use. The value of the magneto-motive
force applied shall be 1 000 At (ampere-turns).
8.3 Test of starting and no-load condition
For these tests, the conditions and the values of the influence quantities shall be as stated
in 8.5 except for any changes specified below.
8.3.1 Initial start-up of the meter
The meter shall be functional within 5 s after the reference voltage is applied to the meter
terminals.
8.3.2 Test of no-load condition
When the voltage is applied with no current flowing in the current circuit, the test output of the
meter shall not produce more than one pulse.
For this test, the current circuit shall be open-circuit and a voltage of 115 % of the reference
voltage shall be applied to the voltage circuits.
The minimum test period ∆t shall be
480× 10
∆t ≥ [min] for meters of class 2
k m U I
n max
300× 10
∆t ≥ [min] for meters of class 3
k m U I
n max
where
k is the number of pulses emitted by the output device of the meter per kilovarhour
(imp/kvarh);
m is the number of measuring elements;
U is the reference voltage in volts;
n
I is the maximum current in amperes.
max
NOTE For transformer-operated meters with primary or half-primary registers, the constant k shall correspond to
the secondary values (voltage and currents).
IEC 2016
8.3.3 Starting
The meter shall start and continue to register at the starting current values (and in case of
polyphase meters, with balanced load) shown in Table 9.
Table 9 – Starting current
Class of meter
sinϕ
Meters for
(inductive or capacitive)
2 3
Direct connection 0,005 I 0,01 I 1
b b
Connection through current
0,003 I 0,005 I 1
n n
transformers
8.4 Meter constant
The relation between the test output and the indication in the display shall comply with the
marking on the name-plate.
8.5 Accuracy test conditions
To test the accuracy requirements, the following test conditions shall be maintained:
a) the meter shall be tested in its case with the cover in position; all parts intended to be
earthed shall be earthed;
b) before any test is made, the circuits shall have been energized for a time sufficient
to reach thermal stability;
c) in addition, for polyphase meters:
– the phase sequence shall be as marked on the diagram of connections;
– the voltages and currents shall be substantially balanced (see Table 10);
Table 10 – Voltage and current balance
Class of meter
Polyphase meters
2 3
Each of the voltages between phase and neutral and between any two phases
±1 % ±1 %
shall not differ from the average corresponding voltage by more than
Each of the currents in the conductors shall not differ from the average
±2 % ±2 %
current by more than
The phase displacements of each of these currents from the corresponding
phase-to-neutral voltage, irrespective of the phase angle, shall not differ from 2° 2°
each other by more than
NOTE When testing a polyphase var-hour meter, errors may arise if the testing method used and the meter
under test are differently affected by voltage and current unbalance. In such cases, the reference voltage
must be carefully adjusted to a high degree of symmetry.
d) the reference conditions are given in Table 11;
e) for requirements regarding test stations, see IEC 60736.
– 16 – IEC 62053-23:2003+AMD1:2016 CSV
IEC 2016
Table 11 – Reference conditions
Permissible tolerances
for meters of class
Influence quantity Reference value
2 3
Ambient temperature Reference temperature or, in its ±2 °C ±2 °C
1)
absence, 23 °C
Voltage Reference voltage ±1,0 % ±1,0 %
Frequency Reference frequency ±0,5 % ±0,5 %
Phase sequence L1 – L2 – L3 – –
Voltage unbalance All phases connected – –
Wave-form Sinusoidal voltages Distortion factor less than:
2 % 3 %
Continuous magnetic induction of Equal to zero – –
external origin
Induction value which causes
a variation of error not
greater than:
Magnetic induction of external origin
Magnetic induction equal to zero
at the reference frequency
±0,3 % ±0,3 %
but should in any case be
2)
smaller than 0,05 mT
Electromagnetic RF fields, Equal to zero <1 V/m <1 V/m
30 kHz to 2 GHz
Operation of accessoires No operation of accessoires – –
Conducted disturbances, induced
by radiofrequency fields, 150 kHz to
Equal to zero <1 V <1 V
80 MHz
1)
If the tests are made at a temperature other than the reference temperature, including permissible
tolerances, the results shall be corrected by applying the appropriate temperature coefficient of the
meter.
2)
The test consists of:
a) for a single-phase meter, determining the errors first with the meter normally connected to the mains
and then after inverting the connections to the current circuits as well as to the voltage circuits. Half
of the difference between the two errors is the value of the variation of error. Because of the unknown
phase of the external field, the test should be made at 0,1 I resp. 0,05 I at sinϕ = 1 and 0,2 I resp.
b n b
0,1 I at sinϕ = 0,5 (inductive or capacitive);
n
b) for a three-phase meter, making three measurements at 0,1 I resp. 0,05 I at sinϕ = 1, after each of
b n
which the connection to the current circuits and to the voltage circuits are changed over 120° while
the phase sequence is not altered. The greatest difference between each of the errors so determined
and their average value is the value of the variation of error.
8.6 Interpretation of test results
Certain test results may fall outside the limits indicated in Tables 6 and 7, owing to
uncertainties of measurements and other parameters capable of influencing the measure-
ments. However, if by one displacement of the zero line parallel to itself by no more than
the limits indicated in Table 12, all the test results are brought within the limits indicated in
Tables 6 and 7, the meter type shall be considered acceptable.
Table 12 – Interpretation of test results
Class of meter
2 3
Permissible displacement of 1,0
...
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