1、BRITISH STANDARDBS EN 62054-21:2004Incorporating Corrigendum No. 1Electricity metering (a.c) Tariff and load control Part 21: Particular requirements for time switchesThe European Standard EN 62054-21:2004 has the status of a British StandardICS 91.140.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g5
2、0g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 62054-21:2004This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 December 2004 BSI
3、 12 December 2005ISBN 0 580 44882 7National forewordThis British Standard is the official English language version of EN 62054-21:2004. It is identical with IEC 62054-21:2004. This standard, in conjunction with BS EN 62052-21, supersedes BS EN 61038:1993 which will be withdrawn on 1 July 2007.The UK
4、 participation in its preparation was entrusted to Technical Committee PEL/13, Electricity meters, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep
5、 UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications
6、 referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary p
7、rovisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover
8、 and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date Comments15614 Corrigendum No. 112 December 2005 Correction to supersession detailsEUROPEAN STANDARD EN 62054-21 NORME EUROPENNE EUROPISCH
9、E NORM October 2004 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by
10、 any means reserved worldwide for CENELEC members. Ref. No. EN 62054-21:2004 E 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
11、comptage de llectricit (c.a.) Tarification et contrle de charge Partie 21: Prescriptions particulires pour horloges de tarification (CEI 62054-21:2004) Wechselstrom-Elektrizittszhler Tarif- und Laststeuerung Teil 21: Besondere Anforderungen an Schaltuhren (IEC 62054-21:2004) This European Standard w
12、as 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 su
13、ch 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
14、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, Lithu
15、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 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 su
16、bmitted 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.
17、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 Europ
18、ean 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 Stan
19、dard IEC 62054-21:2004 was approved by CENELEC as a European Standard without any modification. _ Page 2EN 6205421:2004CONTENTS INTRODUCTION.4 1 Scope.5 2 Normative references .5 3 Terms and definitions .5 4 Standard electrical values 6 5 Mechanical requirements and tests 6 5.1 Dials6 5.2 Digital di
20、splay6 6 Climatic conditions, requirements and tests6 7 Electrical requirements and tests6 7.1 Supply voltage.6 7.2 Heating .7 7.3 Insulation 7 7.4 Output elements8 7.5 Functional requirements and tests accuracy .8 7.6 Electromagnetic compatibility (EMC) .11 7.7 Radio interference suppression .14 8
21、Test conditions and type test14 Annex A (informative) Acceptance tests.15 Annex ZA (normative) Normative references to international publications with their corresponding European publications .16 Annex ZZ (informative) Coverage of Essential Requirements of EC Directives16 Page 3EN 6205421:2004INTRO
22、DUCTION 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 shou
23、ld 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 t
24、he 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
25、 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 da
26、ta from the field IEC 62059-41 Electricity metering equipment Dependability Part 41: Reliability prediction1 1To be published. Page 4EN 6205421:2004ELECTRICITY METERING (AC) TARIFF AND LOAD CONTROL Part 21: Particular requirements for time switches 1 Scope This part of IEC 62054 specifies particular
27、 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 capab
28、le 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
29、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 functionali
30、ty 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 tes
31、ts 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 o
32、ver 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 reference
33、d document (including any amendments) applies. IEC 62052-21:200X Electricity metering equipment (a.c.) General requirements, tests and test conditions Part 21: Tariff and load control equipment 23 Terms and definitions For the purposes of this document, the definitions of IEC 62052-21 apply. 2To be
34、published. Page 5EN 6205421:20044 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
35、 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
36、 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
37、. 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
38、.3 Power consumption IEC 62052-21 applies. 7.1.4 Voltage dips and short interruptions See 7.6.8. Page 6EN 6205421:20047.1.5 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
39、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
40、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
41、-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 interrupti
42、ng the supply voltage for an agreed length of time and when the supply is restored to the time switch, the output elements take up the position as determined by the time-switch programme, according to the indicated time. This test shall be carried out for all possible positions of the output element
43、(s). The restoration of the supply voltage shall be made with the switching device free from bounce. 7.1.6 Operation reserve 7.1.6.1 Requirements IEC 62052-21 applies. 7.1.6.2 Tests For the test of time-keeping accuracy, see 7.5.2. For the test of required behaviour of the output elements, see 7.1.5
44、.2. 7.1.7 Life of back-up power supply IEC 62052-21 applies. 7.1.8 Back-up power supply replacement IEC 62052-21 applies. 7.2 Heating IEC 62052-21 applies. 7.3 Insulation IEC 62052-21 applies. Page 7EN 6205421:20047.4 Output elements IEC 62052-21 applies. 7.5 Functional requirements and tests accura
45、cy 7.5.1 Time setting and programming 7.5.1.1 Time switches with mechanical analogue dials On a day dial, it shall be possible to set the time with an accuracy better than 7,5 min. It shall be possible to programme the switching operations with a resolution of 15 min or smaller and it shall be possi
46、ble to programme a minimum of two successive switching operations at least within 60 min. On a week dial, it shall be possible to set the day of the week and the time with an accuracy better than 1 h. It shall be possible to programme the switching operations with a resolution of 2 h or smaller and
47、it shall be possible to programme a minimum of 2 successive switching operations at least within 8 h. On a year dial, it shall be possible to set the date and time with an accuracy better than 2 days. It shall be possible to programme the switching operations with a resolution of 4 days or smaller a
48、nd it shall be possible to programme a minimum of 2 successive switching operations at least within 16 days. 7.5.1.2 Time switches with digital displays It shall be possible to set the date and time (day, month, year, hours and minutes) with an accuracy of 5 s. The setting of the time shall reset th
49、e seconds to zero. If setting of the seconds is also available, then the setting of the time shall not reset the seconds to zero, but to the intended value. NOTE In this case, it is preferable to display also the seconds. If a daylight saving function is available, the time switch shall display the official time according to the regulations. It shall be possible to set the switching operations with a resolution of 1 minute, 1 hour, 1 day, 1 month and 1 year. 7.5.2 Time-kee
