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1、BRITISH STANDARD BS EN 60921:1991 Incorporating Amendment Nos. 1 and 2 Specification for Ballasts for tubular fluorescent lamps Performance requirements This European Standard EN 60921:1991 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00
2、 2006, Uncontrolled Copy, (c) BSI BS EN 60921:1991 This British Standard was published under the authority of the Standards Board and comes into effect on 30 August 1991 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference LGL/21 Draft for comment 86/2516
3、8 DC ISBN 0 580 19971 1 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the National Committees of the following countries. AustriaItaly BelgiumLuxemburg DenmarkNetherlands Finland
4、Norway FrancePortugal GermanySpain GreeceSweden IcelandSwitzerland IrelandUnited Kingdom Amendments issued since publication Amd. No.DateComments 7433December 1992 8884November 1995 Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00 2006,
5、Uncontrolled Copy, (c) BSI BS EN 60921:1991 BSI 07-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 609215 National appendix NA (informative) Deletions from and IEC text amended by common modifications to IEC Publication 921:198823 National app
6、endix NB (informative)24 National appendix NC (informative)Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60921:1991 ii BSI 07-1999 National foreword This British Standard has been prepared by Technical Committee CPL
7、/34/3 and is the English language version of EN 60921:1991 “Ballasts for tubular fluorescent lamps Performance requirements”, and its Amendments 1 and 2, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 921:1988, its corrigendum of April 19
8、89 and its Amendments No. 1:1990 and No. 2:1994 published by the International Electrotechnical Commission (IEC) of the same title. This standard together with BS EN 60920:1991 supersedes BS 2818-1:1985 which is withdrawn. The CENELEC common modifications, which are quoted on page 2, have been imple
9、mented at the appropriate places in the text of IEC 921 and are indicated by a sideline in the margin. The foreword and preface of IEC 921 and the deleted parts of the original IEC text, which do not form part of the text of EN 60921, have been quoted in National appendix NA. Annexes designated “nor
10、mative” are part of the body of the standard. Annexes designated “informative” are given for information only. National appendices are designated “informative”. Cross-references. Details of international standards quoted in this British Standard for which there is an identical or technically equival
11、ent British Standard are given in National appendix NC. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from lega
12、l obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 24, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated
13、in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60921 April 1991 + A1 July 1992 + A2 June 1995 UDC 621.327.5:621.316.8 Descriptors: Lighti
14、ng equipment, fluorescent lamp, tubular lamp, reference ballast, marking, construction characteristic, performance characteristic, test English version Ballasts for tubular fluorescent lamps Performance requirements (include amendments A1:1992 + A2:1995) (IEC 921:1988 + corrigendum April 1989, modif
15、ied) Ballasts pour lampes tubulaires fluorescence Prescriptions de performances (Inclut les amendements A1:1992 + A2:1995) (CEI 921:1988 + corrigendum avril 1989, modifie) Vorschaltgerte fr rhrenfrmige Leuchtstofflampen Anforderungen an die Arbeitsweise (enthlt nderungen A1:1992 + A2:1995) (IEC 921:
16、1988 + Corrigendum April 1989, modifiziert) This European Standard was approved by CENELEC on 15 March 1991. 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 a
17、lteration. 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 b
18、y 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, Denmark, Finland, France, Germany, Greece, Iceland,
19、 Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stass
20、art 35, B-1050 Brussels 1991 Copyright reserved to CENELEC members Ref. No. EN 60921:1991 + A1:1992 + A2:1995 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60921:1991 BSI 07-1999 2 Foreword The CENELEC questionnaire procedure, perform
21、ed for finding out whether or not the International Standard IEC 921:1988, as corrected by corrigendum April 1989, could be accepted without textual changes, has shown that some CENELEC common modifications were necessary for the acceptance as European Standard. The reference document, together with
22、 the common modifications prepared by the CENELEC Technical Committee TC 34Z, was submitted to the CENELEC members for formal vote. The text of the draft was approved by CENELEC as EN 60921 on 15 March 1991. The following dates were fixed: For products which have complied with the relevant national
23、standard before 1992-03-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1997-03-01. Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Endorsement notice The text
24、 of the International Standard IEC 921:1988 with its corrigendum April 1989 was approved by CENELEC as a European Standard with agreed common modifications as given below. Common modifications 4.3 Delete. 11.1 Delete the second paragraph. Replace Table I and the associated note with the following: T
25、able I Maximum value of the harmonics 13. Delete note 2. Foreword to Amendment A1 The CENELEC questionnaire procedure, performed for finding out whether or not amendment A1:1990 to the International Standard IEC 921:1988 could be accepted without textual changes, has shown that no common modificatio
26、ns were necessary for the acceptance as an amendment to the European Standard. The reference document was submitted to the CENELEC members for formal vote and was approved by CENELEC as amendment A1 to EN 60921:1988 on 16 June 1992. The following dates were fixed: For products which have complied wi
27、th EN 60921:1991 before 1993-06-01, as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until 1998-06-01. Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative. Foreword to Amendme
28、nt A2 The text of amendment 2:1994 to the International Standard IEC 921:1988, prepared by SC 34C, Auxiliaries for lamps, of IEC TC 34, Lamps and related equipment, was submitted to the Unique Acceptance Procedure and was approved by CENELEC as amendment A2 to EN 60921:1991 on 1995-05-15 without any
29、 modification. The following dates were fixed: latest date of publication of an identical national standard(dop) 1992-03-01 latest date of withdrawal of conflicting national standards(dow) 1992-03-01 Harmonic Maximum value expressed as a percentage of fundamental current for the ballast 2 3 5 7 9 5
30、30 7 4 3 id the circuit power-factor. latest date of publication of an identical national standard(dop) 1993-06-01 latest date of withdrawal of conflicting national standards(dow) 1993-06-01 latest date by which the amendment has to be implemented at national level by publication of an identical nat
31、ional standard or by endorsement(dop) 1996-07-01 latest date by which the national standards conflicting with the amendment have to be withdrawn(dow) 1996-07-01 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60921:1991 BSI 07-19993 Conte
32、nts Page Foreword2 Introduction5 1Scope5 2Definitions5 3General notes on tests5 4Marking6 5Open-circuit voltage at terminations of lamp or starter (if any)6 6Pre-heating conditions6 7Lamp power and current7 8Circuit power-factor7 9Supply current7 10Maximum current in any lead to a cathode7 11Current
33、 waveform7 12Magnetic screening8 13Impedance at audio-frequencies8 Appendix A Tests9 Appendix B Series operation of two fluorescent lamps14 Appendix C Reference ballasts15 Appendix D Reference lamps16 Annex ZA (normative) Other international publications quoted in this standard with the references o
34、f the relevant European publications22 Figure 1 Circuit for measurement of voltage/current ratio16 Figure 2 Circuit for measurement of power factor16 Figure 3 Circuit for selection of reference lamps (without separate cathode heating)17 Figure 4 Circuit for selection of reference lamps (with separat
35、e cathode heating)18 Figure 5 Circuit for calibration of cathode transformers18 Figure 6 Measurement of power and current output (lamps with starter)19 Figure 7 Measurement of power and current output (lamps without starter)19 Figure 8 Measurement of maximum current in any lead to a cathode20 Figure
36、 9 Measurement of current waveform20 Figure 10 Measurement of impedance at audio-frequencies Method A21 Page Figure 11 Measurement of impedance at audio-frequencies Method B21 Table II Ballasts suitable for series operation of tubular fluorescent lamps15 Licensed Copy: sheffieldun sheffieldun, na, F
37、ri Nov 10 13:21:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 10 13:21:27 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60921:1991 BSI 07-19995 Introduction This standard covers performance requirements for ballasts for tubular fluorescent
38、lamps. It should be read in conjunction with IEC Publication 920, with which all ballasts covered by the present standard should comply. Unless otherwise stated on the lamp data sheet mentioned in IEC Publications 81 and 901, it may be expected that ballasts which comply with this standard, when ass
39、ociated with lamps complying with IEC Publications 81 or 901, and, where appropriate, operated with a starter complying with IEC Publication 155 or starting devices complying with IEC Publication 927, will ensure satisfactory starting of the lamps at an air temperature immediately around the lamps b
40、etween 10 C and 35 C and for voltages between 92 % and 106 % of rated supply voltage, and also proper operation between 10 C and 50 C at rated supply voltage. The compatibility of lamps and ballasts is evaluated with the use of special inductive ballasts called “reference ballasts” having particular
41、 characteristics which are stable and reproducible. These ballasts are used when testing commercial ballasts and when selecting reference lamps. Moreover, the testing of ballasts presents particular difficulties which require a proper definition of testing methods. Such tests will generally be made
42、with reference lamps and, in particular, by comparing the results obtained when such lamps are operated on a reference ballast with the results obtained when the same lamps are operated on the ballast being tested. NOTERequirements are also included for all those features of reference ballast constr
43、uction and performance which are considered necessary to ensure accurate and reproducible results when testing ballasts, particularly with regard to the selection of reference lamps. For checking the lamp power and current of lamps operated without starter, this standard specifies a measurement in a
44、 reference ballast circuit that makes no provision for separate power sources to heat the cathodes during lamp operation. Although the influence on the ballast specification is small, it has nevertheless been deemed useful for some pre-heated low-voltage cathode lamps, operated without a starter, to
45、 include provision for two alternative methods of measurement of lamp power and current: a) measurement of lamp power and current without additional cathode heating; b) measurement of lamp power and current with additional cathode heating. The test method to be adopted for appraisal should be stated
46、 by the manufacturer. Two alternative circuits are specified for the measurement of impedance at audio-frequencies. The less complex circuit could be used when there is no doubt about the inductive character of the impedance. If there is any doubt, the other circuit shall be used. 1 Scope This stand
47、ard specifies performance requirements for ballasts excluding resistance types for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz, associated with tubular fluorescent lamps with pre-heated cathodes operated with or without a starter or starting device and having rated wattages, dimensions and
48、characteristics as specified in IEC Publications 81 and 901. It applies to complete ballasts and their component parts such as resistors, transformers and capacitors. NOTEFull implications of references to IEC Publication 901 have not been carried out in this standard. This standard should be read i
49、n conjunction with IEC Publication 920. A.C. supplied electronic ballasts for tubular fluorescent lamps for high frequency operation specified in IEC Publication 928 are excluded. 2 Definitions The definitions of IEC Publication 920 apply. 3 General notes on tests 3.1 Tests according to this specification are type tests. NOTEThe requirements and tolerances permitted by this standard are based on testing of a type test sample submitted by the manufacturer for that purpose. In principle this type test sample sho
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