SIST EN 62054-21:2005

Electricity metering (a.c.) - Tariff and load control -- Part 21: Particular requirements for time switches

This part of IEC 62054 specifies particular requirements for the type test of newly
manufactured indoor time switches with operation reserve that are used to control electrical
loads, multi-tariff registers and maximum demand devices of electricity metering equipment.
The time switch keeps the real time, it may keep the date, it may be capable of handling leap
years, it may support daylight saving, i.e. it modifies the deviation of local time to GMT
according to the relevant regulations. The time switch may have a synchronization capability.
The time switch also holds a schedule of switching actions, which may be specified in terms
of time, day of the week, date within a month or a year. The time switch controls the output
elements depending on the time and the schedule of switching actions stored.
This standard gives no requirements for constructional details internal to the time switch.
In the case where time switch functionality is integrated into multifunction electricity metering
equipment, the relevant parts of this standard apply.
This standard covers time switches with analogue mechanical dials or electronic digital
displays that are
– synchronous; or
– crystal-controlled.
This standard does not cover the acceptance tests and the conformity tests. Nevertheless, an
example of what could be an acceptance test is given in Annex A .
The dependability aspect is covered by the documents of the IEC 62059 series.
When using this standard in conjunction with IEC 62052-21, the requirements of this standard
take precedence over those of IEC 62052-21 with regard to any item already covered in it.

Wechselstrom-Elektrizitätszähler - Tarif- und Laststeuerung -- Teil 21: Besondere Anforderungen an Schaltuhren

Equipment de comptage de l'électricité (c.a.) - Tarification et contrôle de charge -- Partie 21: Prescriptions particulières pour horloges de tarification

L'IEC 62054-21:2004 spécifie les exigences particulières pour l'essai de type d’horloges de tarification dont la production est nouvelle, prévues pour un usage sous abri, avec une réserve de marche et qui sont utilisées pour la commande de charges électriques, de registres multitarifs et d’indicateur de maximum d’équipements de comptage électrique
La présente version bilingue (2016-12) correspond à la version anglaise monolingue publiée en 2004-05.

Merjenje električne energije (a.c./izmenični tok) – Krmiljenje tarif in bremen – 21. del: Posebne zahteve za časovna stikala (IEC 62054-21:2004)

Ta del standarda IEC 62054 določa posebne zahteve za tipsko preskušanje novo proizvedenih notranjih časovnih stikal z delovno rezervo, ki se uporabljajo za krmiljenje električnih obremenitev, večtarifnih registrov in indikatorjev maksimuma, za opremo za merjenje električne energije.
Časovno stikalo ohranja realni čas, lahko tudi datum, morda lahko upošteva prestopna leta, podpira poletni čas, tj. prilagodi odstopanje lokalnega časa glede na GMT v skladu z ustreznimi predpisi. Časovno stikalo lahko vključuje zmogljivost sinhronizacije.
Časovno stikalo vsebuje tudi razpored preklopov, ki se lahko določijo glede na čas, dan v tednu in datum v mesecu ali letu. Časovno stikalo nadzoruje izhodne elemente glede na čas in razpored shranjenih preklopov.
V tem standardu niso podane zahteve za konstrukcijske podrobnosti časovnega stikala.
Kadar je funkcija časovnega stikala vgrajena v večfunkcijsko opremo za merjenje električne energije, se uporabljajo ustrezni deli tega standarda.
Ta standard zajema časovna stikala z analognimi mehanskimi številčnicami ali elektronskimi digitalnimi zasloni, ki so:
– sinhroni; ali
– kristalni.
Ta standard ne obravnava preskusov sprejemljivosti in skladnosti. Kljub temu je primer preskusa sprejemljivosti podan v dodatku A.
Vidik zanesljivosti je zajet v dokumentih iz skupine standardov IEC 62059.
Pri uporabi tega standarda skupaj s standardom IEC 62052-21 imajo zahteve tega standarda prednost pred zahtevami standarda IEC 62052-21 glede katerega koli elementa, ki ga že obravnava.

General Information

• Status: Published
• Publication Date: 31-May-2005
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: MEE - Equipment for electrical energy measurement and load control
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jun-2005
• Due Date: 01-Jun-2005
• Completion Date: 01-Jun-2005
• Directive: 2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive: 89/336/EEC - Electromagnetic compatibility (EMC)
• Ref Project: EN 62054-21:2004 - Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements for time switches

Relations

• Replaces: SIST EN 61038:1997/A2:2000 - Electricity metering - Tariff and load controls - Particular requirements for time switches
• Effective Date: 28-Jan-2023
• Replaces: SIST EN 61038:1997 - Time switches for tariff and load control (IEC 1038:1990)
• Effective Date: 29-Jan-2023
• Revised: SIST EN 61038:1997/A2:2000 - Electricity metering - Tariff and load controls - Particular requirements for time switches
• Effective Date: 07-Jun-2022
• Revised: SIST EN 61038:1997 - Time switches for tariff and load control (IEC 1038:1990)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI SIST EN 62054-21:2005

STANDARD
junij 2005
0HUMHQMHHOHNWULþQHHQHUJLMHDFL]PHQLþQLWRN±.UPLOMHQMHWDULILQEUHPHQ±
GHO3RVHEQH]DKWHYH]DþDVRYQDVWLNDOD,(&
Electricity metering (a.c.) - Tariff and load control - Part 21: Particular requirements
for time switches (IEC 62054-21:2004)
ICS 5HIHUHQþQDãWHYLOND
91.140.50
SIST EN 62054-21:2005(en)
! "#$%!&!%’()*#+’

---------------------- Page: 1 ----------------------

EUROPEAN STANDARD EN 62054-21
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2004

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


English version


Electricity metering (a.c.) –
Tariff and load control
Part 21: Particular requirements for time switches
(IEC 62054-21:2004)


Equipment de comptage de l'électricité Wechselstrom-Elektrizitätszähler –
(c.a.) – Tarif- und Laststeuerung
Tarification et contrôle de charge Teil 21: Besondere Anforderungen
Partie 21: Prescriptions particulières an Schaltuhren
pour horloges de tarification (IEC 62054-21:2004)
(CEI 62054-21:2004)






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 62054-21:2004 E

---------------------- Page: 2 ----------------------

EN 62054-21:2004 - 2 -
Foreword
The text of document 13/1308/FDIS, future edition 1 of IEC 62054-21, 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 62054-21 on 2004-07-06.
This standard, in conjunction with EN 62052-21, supersedes EN 61038:1992 + A1:1996 + A2:1998.
This standard is to be used in conjunction with EN 62052-21 and the relevant parts of 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
national standard or by endorsement (dop) 2005-05-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-07-01
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 and ZZ have been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62054-21:2004 was approved by CENELEC as a European
Standard without any modification.
Corrigendum to text of IEC 62054-21:2004
In subclause 7.6.4,
- replace "Field strength of the unmodulated signal 10 V/m" by "At field strength of 10 V/m
(measured according to EN 61000-4-3)".
- replace "Field strength of the unmodulated signal 30 V/m" by "At field strength of 30 V/m
(measured according to EN 61000-4-3)".
__________

---------------------- Page: 3 ----------------------

- 3 - EN 62054-21:2004
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
1)
IEC 62052-21 2004 Electricity metering equipment (AC) - EN 62052-21 -
General requirements, tests and test
conditions
Part 21: Tariff and load control
equipment
__________

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.
__________



1)
To be published.

---------------------- Page: 4 ----------------------

INTERNATIONAL IEC


STANDARD 62054-21





First edition
2004-05


Electricity metering (a.c.) –
Tariff and load control –
Part 21:
Particular requirements for time switches

 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.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale P
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
For price, see current catalogue

---------------------- Page: 5 ----------------------

– 2 – 62054-21  IEC:2004(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5

1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 Standard electrical values .7
5 Mechanical requirements and tests .7
5.1 Dials.7
5.2 Digital display.7
6 Climatic conditions, requirements and tests.7
7 Electrical requirements and tests.7
7.1 Supply voltage.7
7.2 Heating .8
7.3 Insulation .8
7.4 Output elements .9
7.5 Functional requirements and tests – accuracy .9
7.6 Electromagnetic compatibility (EMC) .12
7.7 Radio interference suppression .15
8 Test conditions and type test .15

Annex A (informative) Acceptance tests.16

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62054-21  IEC:2004(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTRICITY METERING (AC) –
TARIFF AND LOAD CONTROL –

Part 21: Particular requirements for time switches


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of 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, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). 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. 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 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 IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) 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.
International Standard IEC 62054-21 has been prepared by IEC technical committee 13:
Equipment for electrical energy measurement and load control.
This standard, in conjunction with IEC 62052-21, cancels and replaces IEC 61038:1990,
Electricity metering – Tariff and load control – Particular requirements for time switches and
all amendments. .
This standard is to be used in conjunction with IEC 62052-21 and the relevant parts of the IEC
62059 series.

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– 4 – 62054-21  IEC:2004(E)
The text of this standard is based on the following documents:
FDIS Report on voting
13/1308/FDIS 13/1317/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.

IEC 62054 consists of the following parts, under the general title: Electricity metering (a.c.)
Tariff and load control:
IEC 62054-11: Particular requirements for electronic ripple control receivers
 (Replaces the particular requirements of IEC 61037.)
IEC 62054-21: Particular requirements for time switches
 (Replaces the particular requirements of IEC 61038.)
The committee has decided that the contents of this publication will remain unchanged until
2013. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

A bilingual version of this standard may be issued at a later date.

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62054-21  IEC:2004(E) – 5 –
INTRODUCTION
This standard distinguishes between protective class I and protective class II equipment
The test levels are regarded as minimum values to guarantee the proper functioning of the
equipment under normal working conditions. For special application, other test levels might be
necessary and should be agreed on between the user and the manufacturer.
For information, the relevant parts of IEC 62052, IEC 62054 and IEC 62059 are listed below.
IEC 62052-21 Electricity metering equipment (a.c.) – General requirements, tests and test
conditions − Part 21: Tariff and load control equipment
 (Replaces the general requirements of IEC 61037 and IEC 61038.)
IEC 62054-11 Electricity metering (a.c.) − Tariff and load control − Part 11: Particular
requirements for electronic ripple control receivers
 (Replaces the particular requirements of IEC 61037.)
IEC 62054-21 Electricity metering (a.c.) − Tariff and load control − Part 21: Particular
requirements for time switches
 (Replaces the particular requirements of IEC 61038.)
IEC 62059-11 Electricity metering equipment − Dependability − Part 11: General concepts
IEC 62059-21 Electricity metering equipment – Dependability − Part 21: Collection of meter
dependability data from the field
IEC 62059-41 Electricity metering equipment − Dependability − Part 41: Reliability
1
prediction
———————
1
To be published.

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– 6 – 62054-21  IEC:2004(E)
ELECTRICITY METERING (AC)–
TARIFF AND LOAD CONTROL –

Part 21: Particular requirements for time switches



1 Scope
This part of IEC 62054 specifies particular requirements for the type test of newly
manufactured indoor time switches with operation reserve that are used to control electrical
loads, multi-tariff registers and maximum demand devices of electricity metering equipment.
The time switch keeps the real time, it may keep the date, it may be capable of handling leap
years, it may support daylight saving, i.e. it modifies the deviation of local time to GMT
according to the relevant regulations. The time switch may have a synchronization capability.
The time switch also holds a schedule of switching actions, which may be specified in terms
of time, day of the week, date within a month or a year. The time switch controls the output
elements depending on the time and the schedule of switching actions stored.
This standard gives no requirements for constructional details internal to the time switch.
In the case where time switch functionality is integrated into multifunction electricity metering
equipment, the relevant parts of this standard apply.
This standard covers time switches with analogue mechanical dials or electronic digital
displays that are
– synchronous; or
– crystal-controlled.
This standard does not cover the acceptance tests and the conformity tests. Nevertheless, an
example of what could be an acceptance test is given in Annex A .
The dependability aspect is covered by the documents of the IEC 62059 series.
When using this standard in conjunction with IEC 62052-21, the requirements of this standard
take precedence over those of IEC 62052-21 with regard to any item already covered in it.
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 62052-21:200X Electricity metering equipment (a.c.) – General requirements, tests and
2
test conditions – Part 21: Tariff and load control equipment
3 Terms and definitions
For the purposes of this document, the definitions of IEC 62052-21 apply.
———————
2
To be published.

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62054-21  IEC:2004(E) – 7 –
4 Standard electrical values
The values given in IEC 62052-21 apply.
5 Mechanical requirements and tests
The requirements and tests specified in IEC 62052-21 and the following apply.
5.1 Dials
For time switches with analogue mechanical dials:
– the direction of rotation of the dials shall be marked by an arrow;
– the hour dial (if any) shall be capable of being read to the nearest minute;
– when required, the hours on the day dial and the days on the week dial should be marked
in a different colour;
– all markings shall be indelible and easy to read.
5.2 Digital display
For time switches with electronic digital display:
– the display shall be easy to read. If the same display is used for displaying different
values, then a code or other indication shall be displayed to enable each value to be
identified;
– the display time of each displayed value shall be at least 6 s.
6 Climatic conditions, requirements and tests
The conditions, requirements and tests specified in IEC 62052-21 apply.
7 Electrical requirements and tests
7.1 Supply voltage
7.1.1 Supply voltage range
The values specified in IEC 62052-21 apply.
7.1.2 Supply frequency range
IEC 62052-21 applies.
7.1.3 Power consumption
IEC 62052-21 applies.
7.1.4 Voltage dips and short interruptions
See 7.6.8.

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– 8 – 62054-21  IEC:2004(E)
7.1.5 Long interruptions of supply voltage
7.1.5.1 Requirements
During an interruption of the supply voltage not exceeding the operation reserve, the time
switch shall keep the time within the prescribed accuracy (see 7.5.2).
The output elements shall take up the position determined by the time switch programme
within 5 s after the restoration of the nominal supply voltage.
If the length of the interruption of the supply voltage exceeds the operation reserve, the time
may need to be re-adjusted. The time switch shall begin to execute the time switch
programme within 6 h following the restoration of the supply. However, the user and the
supplier may agree that, after a prolonged interruption of the supply voltage, the time switch
does not restart, the outputs take up a pre-determined position and the time switch displays a
special flag.
7.1.5.2 Test of effect of a long interruption of the supply voltage
For testing the time-keeping accuracy on operation reserve, see 7.5.2.3.
The test of the behaviour of the output elements consists of verifying that, after interrupting
the supply voltage for an agreed length of time and when the supply is restored to the time
switch, the output e
...