SIST EN 62053-11:2004

SLOVENSKI STANDARD
01-januar-2004
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SIST EN 60521:1995
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Electricity metering equipment (a.c.) - Particular requirements - Part 11:
Electromechanical meters for active energy (classes 0,5, 1 and 2) (IEC 62053-11:2003)
Wechselstrom-Elektrizitätszähler - Besondere Anforderungen - Teil 11:
Elektromechanische Wirkverbrauchszähler der Genauigkeitsklassen 0,5, 1 und 2 (IEC
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) (CEI 62053-
11:2003)
Ta slovenski standard je istoveten z: EN 62053-11:2003
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ 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 62053-11
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2003
ICS 17.220.20 Supersedes EN 60521:1995

English version
Electricity metering equipment (a.c.) –
Particular requirements
Part 11: Electromechanical meters for active energy (classes 0,5, 1 and 2)
(IEC 62053-11:2003)
Equipement de comptage  Wechselstrom-Elektrizitätszähler -
de l'électricité (c.a.) – Besondere Anforderungen
Prescriptions particulières Teil 11: Elektromechanische
Partie 11: Compteurs électromécaniques Wirkverbrauchszähler der
d'énergie active (classes 0,5, 1 et 2) Genauigkeitsklassen 0,5, 1 und 2
(CEI 62053-11:2003) (IEC 62053-11:2003)

This European Standard was approved by CENELEC on 2003-03-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62053-11:2003 E
Foreword
The text of document 13/1287/FDIS, future edition 1 of IEC 62053-11, prepared by IEC TC 13,
Equipment for electrical energy measurement and load control, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 62053-11 on 2003-03-01.
This European Standard supersedes EN 60521:1995 + corrigendum December 1997.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2006-03-01

Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62053-11:2003 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 62053-11:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60514 (mod) 1975 Acceptance inspection of Class 2 EN 60514 1995
alternating-current watthour meters

IEC 60736 1982 Testing equipment for electrical energy - -
meters
IEC 62052-11 2003 Electricity metering equipment (AC) - EN 62052-11 2003
General requirements, tests and test
conditions
Part 11: Metering equipment
NORME CEI
INTERNATIONALE IEC
62053-11
INTERNATIONAL
Première édition
STANDARD
First edition
2003-01
Equipement de comptage de l'électricité (c.a.) –
Prescriptions particulières –
Partie 11:
Compteurs électromécaniques d'énergie active
(classes 0,5, 1 et 2)
Electricity metering equipment (a.c.) –
Particular requirements –
Part 11:
Electromechanical meters for active energy
(classes 0,5, 1 and 2)
 IEC 2003 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
N
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

62053-11  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
5.1 General .11
5.2 Register (counting mechanism).11
5.3 Direction of rotation and marking of the rotor .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 .15
7.4 AC voltage test .15
8 Accuracy requirements .19
8.1 Limits of error due to variation of the current .19
8.2 Limits of error due to influence quantities .19
8.3 Test of starting and no-load condition .23
8.4 Meter constant.23
8.5 Accuracy test conditions .23
8.6 Interpretation of test results .27
9 Adjustment .27
Table 1 – Power consumption in voltage circuits .13
Table 2 – Power consumption in current circuits.13
Table 3 – Variations due to short-time overcurrents .15
Table 4 – Variations due to self-heating .15
Table 5 – AC voltage tests .17
Table 6 – Percentage error limits (single-phase meters and polyphase meters with
balanced loads).19
Table 7 – Percentage error limits (polyphase meters carrying a single-phase load,
but with balanced polyphase voltages applied to voltage circuits).19
Table 8 – Influence quantities .21
Table 9 – Starting current.23
Table 10 – Voltage and current balance .25
Table 11 – Reference conditions .25
Table 12 – Interpretation of test results .27
Table 13 – Minimum range of adjustment .29

62053-11  IEC:2003 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
ELECTRICITY METERING EQUIPMENT (AC) –
PARTICULAR REQUIREMENTS –
Part 11: Electromechanical meters for active energy
(classes 0,5, 1 and 2)
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. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62053-11 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 60521 second edition
published in1988 and constitutes a technical revision.
The text of this standard is based on the following documents:
FDIS Report on voting
13/1287/FDIS 13/1293/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.
62053-11  IEC:2003 – 7 –
INTRODUCTION
This part of IEC 62053 is to be used with the following 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 62053-21:2003, 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 62053-23:2002, Electricity metering equipment (a.c.) – Particular requirements –
Part 23: Static meters for reactive energy (classes 2 and 3)
st
Replaces particular requirements of IEC 61268: 1995 (1 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 in large quantities world-wide. 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 0,5, accuracy class index 1 and accuracy class index 2
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.

62053-11  IEC:2003 – 9 –
ELECTRICITY METERING EQUIPMENT (AC) –
PARTICULAR REQUIREMENTS –
Part 11: Electromechanical meters for active energy
(classes 0,5, 1 and 2)
1 Scope
This part of IEC 62053 applies only to newly manufactured electromechanical 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.
It applies only to electromechanical watt-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:
– watt-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.
Regarding acceptance tests, a basic guideline is given in IEC 60514.
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 60514:1975, Acceptance inspection of Class 2 alternating-current watt-hour meters
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
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62052-11 apply.

62053-11  IEC:2003 – 11 –
4 Standard electrical values
The values given in IEC 62052-11 apply.
5 Mechanical requirements
In addition to the mechanical requirements in IEC 62052-11, electromechanical meters shall
fullfil the following requirements.
5.1 General
The case of an electromechanical watt-hour meter shall be so constructed that, if mounted
according to the manufacturer’s instructions, the meter shall not deviate by more than 0,5° in
all directions from its vertical position (see also note 2 of Table 11).
5.2 Register (counting mechanism)
The register may be of the drum or the pointer type.
In drum-type registers, the principal unit in which the register records shall be marked
adjacent to the set of drums.
In this type of register, only the last drum, i.e. the drum on the extreme right, may be
continuously movable.
In pointer-type registers, the unit in which the register records shall be marked adjacent to the
units dial in the form: 1 kWh/div, or 1 MWh/div, and the decimal multiples may be marked
adjacent to the other dials. For example, in a meter registering in terms of kilowatthours, the
units dial shall be marked: 1 kWh/div and, adjacent to the other dials to the left of the units
dial, shall be marked: 10 – 100 – 1 000, etc.
5.3 Direction of rotation and marking of the rotor
The edge of the rotor nearest to an observer viewing a meter from the front shall move from
left to right for positive registration. The direction of rotation shall be marked by a clearly
visible arrow.
The edge and/or upper surface of the disk shall carry an easily visible mark to facilitate
revolution counting. Other marks may be added for stroboscopic or other tests, but such
marks shall be so placed as not to interfere with the use of the main visible mark for
photoelectric revolution counting.
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 a
...