EN 62052-21:2004

SLOVENSKI SIST EN 62052-21:2005

STANDARD
junij 2005
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preskusi in pogoji preskušanja – 21. del: Oprema za krmiljenje tarif in bremen
(IEC 62052- 21:2004)
Electricity metering equipment (a.c.) - General requirements, tests and test
conditions - Part 21: Tariff and load control equipment (IEC 62052-21:2004)
ICS 5HIHUHQþQDãWHYLOND
91.140.50
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EUROPEAN STANDARD EN 62052-21
NORME EUROPÉENNE
EUROPÄISCHE NORM December 2004

ICS 91.140.50 Partially supersedes EN 61037:1992 + A1:1996 + A2:1998 & EN 61038:1992 + A1:1996 + A2:1998

English version
Electricity metering equipment (a.c.) -
General requirements, tests and test conditions
Part 21: Tariff and load control equipment
(IEC 62052-21:2004)
Equipement de comptage de l'électricité - Wechselstrom-Elektrizitätszähler -
Prescriptions générales, Allgemeine Anforderungen,
essais et conditions d'essai Prüfungen und Prüfbedingungen
Partie 21: Equipement de tarification et Teil 21: Einrichtungen für Tarif-
contrôle de charge und Laststeuerung
(CEI 62052-21:2004) (IEC 62052-21:2004)

This European Standard was approved by CENELEC on 2004-07-06. 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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, 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

© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62052-21:2004 E
Foreword
The text of document 13/1307/FDIS, future edition 1 of IEC 62052-21, 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 62052-21 on 2004-07-06.
This standard, in conjunction with EN 62054-11 and EN 62054-21, supersedes EN 61037:1992
(+ corrigendum December 1997) + A1:1996 + A2:1998 and EN 61038:1992 (+ corrigendum December
1997) + A1:1996 + A2:1998.
This standard is to be used in conjunction with the relevant parts of the EN 62054 and the EN 62059
series.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
(dop) 2005-07-01
national standard or by endorsement
– latest date by which the national standards conflicting
(dow) 2007-07-01
with the EN have to be withdrawn
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and covers essential requirements of
EC Directive(s). See Annex ZZ.
Annexes ZA, ZB and ZZ have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62052-21:2004 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60068-2-11 NOTE Harmonized as HD 323.2.11 S1:1988(not modified).
IEC 62053-61 NOTE Harmonized as EN 62053-61:1998(not modified).
__________
- 3 - EN 62052-21:2004
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
IEC 60050-300 2001 International Electrotechnical Vocabulary - - -
Electrical and electronic measurements
and measuring instruments
Part 311: General terms relating to
measurements
Part 312: General terms relating to
electrical measurements
Part 313: Types of electrical measuring
instruments
Part 314: Specific terms according to the
type of instrument
IEC 60060-1 1989 High-voltage test techniques
+ corr. March 1990 Part 1: General definitions and test HD 588.1 S1 1991
requirements
IEC 60068-2-1 1990 Environmental testing EN 60068-2-1 1993
Part 2: Tests - Tests A: Cold
1)
IEC 60068-2-2 1974 Part 2: Tests - Tests B: Dry heat EN 60068-2-2 1993

IEC 60068-2-6 1995 Part 2: Tests - Test Fc: Vibration
+ corr. March 1995 (sinusoidal) EN 60068-2-6 1995

IEC 60068-2-27 1987 Part 2: Tests - Test Ea and guidance: EN 60068-2-27 1993
Shock
2)
IEC 60068-2-30 1980 Part 2: Tests - Test Db and guidance: EN 60068-2-30 1999
Damp heat, cyclic (12 + 12-hour cycle)

IEC 60068-2-75 1997 Part 2-75: Tests - Test Eh: Hammer tests EN 60068-2-75 1997

3)
IEC 60085 1984 Thermal evaluation and classification of HD 566 S1 1990
electrical insulation
1)
EN 60068-2-2 includes supplement A:1976 to IEC 60068-2-2.
2)
EN 60068-2-30 includes A1:1985 to IEC 60068-2-30.
3)
HD 566 S1:1990 is superseded by EN 60085:2004, which is based IEC 60085:2004.

Publication Year Title EN/HD Year
4)
IEC 60269-3-1 1994 Low-voltage fuses HD 630.3.1 S3 2002
(mod) Part 3-1: Supplementary requirements for
fuses for use by unskilled persons (fuses
mainly for household and similar
applications) - Sections I to IV

5) 5)
IEC 60417-2 1998 Graphical symbols for use on equipment EN 60417-2 1999
Part 2: Symbol originals
A1 2000  - -
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. May 1993

IEC 60695-2-10 2000 Fire hazard testing EN 60695-2-10 2001
Part 2-10: Glowing/hot-wire based test
methods - Glow-wire apparatus and
common test procedure
IEC 60695-2-11 2000 Part 2-11: Glowing/hot-wire based test EN 60695-2-11 2001
methods - Glow-wire flammability test
method for end-products
IEC 60721-3-3 1994 Classification of environmental conditions EN 60721-3-3 1995
Part 3: Classification of groups of
environmental parameters and their
severities
Section 3: Stationary use at
weatherprotected locations
IEC 61000-4-2 1995 Electromagnetic compatibility (EMC) EN 61000-4-2 1995
Part 4-2: Testing and measurement
techniques - Electrostatic discharge
immunity test
IEC 61000-4-3 2002 Part 4-3: Testing and measurement EN 61000-4-3 2002
techniques - Radiated, radio-frequency,
electromagnetic field immunity test

6)
IEC 61000-4-4 1995 Part 4-4: Testing and measurement EN 61000-4-4 1995
techniques - Electrical fast transient/burst
immunity test
IEC 61000-4-5 1995 Part 4-5: Testing and measurement EN 61000-4-5 1995
techniques - Surge immunity test

IEC 61000-4-6 1996 Part 4-6: Testing and measurement EN 61000-4-6 1996
techniques - Immunity to conducted
disturbances, induced by radio-frequency
fields
4)
HD 630.3.1 S3:2002 is superseded by HD 60269-3-1:2004, which is based on IEC 60269-3-1:2004.
5)
See IEC 60417 database.
6)
EN 61000-4-4:1995 is superseded by EN 61000-4-4:2004, which is based on IEC 61000-4-4:2004.

- 5 - EN 62052-21:2004
Publication Year Title EN/HD Year
IEC 62054-11 2004 Electricity metering (a.c.) - Tariff and load EN 62054-11 2004
control
Part 11: Particular requirements for
electronic ripple control receivers

IEC 62054-21 2004 Part 21: Particular requirements for time EN 62054-21 2004
switches
CISPR 22 (mod) 1997 Information technology equipment - Radio EN 55022 1998
disturbance characteristics - Limits and + corr. July 2003
methods of measurement
7)
ISO 75-2 1993 Plastics - Determination of temperature of EN ISO 75-2 1996
deflection under load
Part 2: Plastics and ebonite
7)
EN ISO 75-2:1996 is superseded by EN ISO 75-2:2004, which is based on ISO 75-2:2004.

Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over a long
period, e.g. climatic conditions, electrical earthing conditions.
NOTE  If it affects harmonization, it forms part of the European Standard.
For the countries in which the relevant special national conditions apply these provisions are normative,
for other countries they are informative.
Clause Special national condition
7.4.4 United Kingdom
Replace the entire subclause by:
7.4.4 Short-circuit performance
7.4.4.1 Requirements
Short-time overcurrents shall not damage the output element. The output element shall still
operate under specified conditions, the surroundings of the tariff and load control equipment
shall not be endangered and protection against indirect contact shall be assured in all cases.
The test circuit shall be practically non-inductive.
7.4.4.2 Test of s.hort-circuit performance of the output element
The output element shall be able to carry a short-time overcurrent of 3 000 A rms with a
relative tolerance of + 0% to - 10 % for one half-cycle. The test circuit shall be practically non-
inductive. The open-circuit source voltage of the generator used for this test shall be Un
+ 5 % to - 5 %. This test shall be carried out with the switch closed and the contacts shall
remain closed after the test overcurrent has been applied. The test is passed if the protection
against indirect contact remains assured and if the output element can still be operated
correctly after the test overcurrent has been applied.
Where the output element is incorporated into an integrated meter the meter shall still meet
the requirements for influence of short-time overcurrents in the relevant standard for the
meter, including where the switch contact is in the current circuit. For polyphase meters and
switches the test shall be perfomed phase-by-phase.
NOTE  The short-circuit test is not applicable to the low rating d.c. switch (30 V, 30 mA) and to load switches up to a
rated breaking current of 2 A.
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- 7 - EN 62052-21:2004
Annex ZZ
(informative)
Coverage of Essential Requirements of EC Directives
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and the European Free Trade Association and within its scope the standard covers all
relevant essential requirements as given in Article 4 of the EC Directive 89/336/EEC.
Compliance with this standard provides one means of conformity with the specified essential
requirements of the Directive[s] concerned.
WARNING: Other requirements and other EC Directives may be applicable to the products falling within
the scope of this standard.
__________
INTERNATIONAL IEC
STANDARD 62052-21
First edition
2004-05
Electricity metering equipment (a.c.) –
General requirements, tests and test conditions –
Part 21:
Tariff and load control equipment

 IEC 2004  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
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– 2 – 62052-21  IEC:2004(E)
CONTENTS
FOREWORD.4
INTRODUCTION.6

1 Scope.7
2 Normative references.7
3 Terms and definitions .8
3.1 General definitions.9
3.2 Definitions related to electronic ripple control receivers .9
3.3 Definitions related to the ripple control code and to the control element .10
3.4 Definitions related to time switches .11
3.5 Definitions related to the output elements.12
3.6 Definitions of mechanical elements .13
3.7 Definitions of insulations .14
3.8 Definitions of influence quantities .15
3.9 Definition of tests.
...