1、 IEC 62798 Edition 1.0 2014-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial electroheating equipment Test methods for infrared emitters Chauffage lectrique industriel Mthodes dessais des metteurs de rayonnement infrarouge IEC 62798:2014-08(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Cop
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19、sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62798 Edition 1.0 2014-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial electroheating equipment Test methods for infrared emitters Chauffage lectrique industriel Mthodes dessais des metteurs de rayonnement i
20、nfrarouge INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE X ICS 25.180.10 PRICE CODE CODE PRIX ISBN 978-2-8322-1837-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make
21、 sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 62798:2014 IEC 2014 CONTENTS FOREWORD . 5 INTRODUCTION . 6 1 Scope and object . 7 2 Normative references 8 3 Terms and defin
22、itions 8 3.1 General . 8 3.2 Radiation 9 4 Classification of infrared emitters . 10 5 Type of tests and general conditions of their performance . 12 5.1 General list of tests 12 5.2 Test conditions . 15 5.2.1 Operating conditions during tests. 15 5.2.2 Standard environment for tests 15 5.2.3 Non-sta
23、ndard environment for tests . 15 5.2.4 Supply voltage . 15 5.3 Stationary condition 16 5.4 Number of emitters for tests 16 6 Measurements . 16 6.1 General . 16 6.2 Time resolution . 16 6.3 Measurement of electric data 16 6.4 Temperature measurement . 17 6.5 Irradiance and radiance measurement 17 6.6
24、 Spectral measurements 18 6.6.1 General . 18 6.6.2 Calculation as a surrogate for measurement 18 6.6.3 Required spectral range 18 6.6.4 Measurement conditions 18 6.6.5 Spectral measurements . 19 7 Technical tests 19 7.1 General . 19 7.2 Tests concerning cap and holder of emitter . 19 7.2.1 General .
25、 19 7.2.2 Cap and holder interchangeability 19 7.2.3 Cap twist-off test . 19 7.3 Power consumption characteristics . 19 7.3.1 Rated power 19 7.3.2 Variation of power with voltage 19 7.3.3 Inrush current 20 7.3.4 Emitter resistivity as estimate for rated power 20 7.4 Emitter temperature tests 20 7.4.
26、1 Rated temperature . 20 7.4.2 Variation of source temperature with voltage . 21 7.4.3 Source temperature rise time . 21 IEC 62798:2014 IEC 2014 3 7.4.4 Source temperature cooling time for quartz tube emitters 22 7.4.5 Source temperature cooling time for other emitters 22 7.4.6 Quartz tube cooling t
27、ime for quartz tube emitters . 22 7.4.7 Source temperature distribution . 22 7.4.8 Average temperature calculation from a thermal image 23 7.4.9 Surface temperature distribution 23 7.4.10 Distribution temperature 24 7.4.11 Thermal ruggedness 25 7.4.12 Pinching temperature of pinched emitters 25 7.5
28、Radiation characteristics . 25 7.5.1 General . 25 7.5.2 Radial irradiation distribution of tubular emitters 26 7.5.3 Reflectivity of a tubular emitter with applied reflector . 26 7.5.4 Planar irradiation field caused by an emitter 26 7.5.5 Angular irradiation distribution caused by an emitter 27 7.5
29、.6 Emitted spectrum . 27 7.5.7 Rated total radiant power . 28 7.5.8 Irradiation reaction time . 29 7.6 Mechanical ruggedness 29 7.6.1 Acceleration 29 7.6.2 Vibration 29 7.7 Lifetime of infrared emitters 29 7.7.1 General . 29 7.7.2 Criteria defining end of life . 30 7.7.3 Lifetime measurement . 30 7.
30、7.4 Induced lamp death for emitter with a tungsten coil . 31 7.7.5 Induced lamp death for other emitter . 31 7.7.6 Lifetime statement . 31 8 Emitter efficiency . 32 8.1 General . 32 8.2 Conversion efficiency 32 8.3 Transfer efficiency 32 8.3.1 General . 32 8.3.2 Simple approach 33 8.3.3 Ray-tracing
31、33 8.4 Irradiation efficiency 33 Annex A (informative) Thermal infrared radiation . 34 A.1 General . 34 A.2 Spectral emission . 34 A.3 Emissivity . 36 A.4 Conservation of tendue . 36 Annex B (informative) Infrared classification not used in this standard . 37 Annex C (normative) Measurement of spect
32、ral emission and spectral data of the emitter 38 C.1 General . 38 C.2 Comparative method . 38 C.3 Measurement of the spectral emissivity . 39 Annex D (informative) Zonal spherical factors 40 4 IEC 62798:2014 IEC 2014 Annex E (informative) Distribution of measurement positions for temperature measure
33、ments 42 E.1 Reference operating temperature 42 E.2 Temperature distribution coefficient 42 Annex F (informative) End of life criteria for infrared emitter 43 Annex G (normative) Cold state resistivity and rated power . 45 G.1 General . 45 G.2 Measuring with high accuracy for comparison . 45 G.3 Tem
34、perature influences on measurement accuracy . 45 G.4 Emitter manufacturing effects 46 G.5 Error contributions 46 Bibliography 47 Figure A.1 Spectral emissive power and accumulated power of a grey emitter at 1 800 C . 35 Figure D.1 Illustration of the measurement geometry for zonal spherical factors
35、. 41 Table 1 Classification of infrared emitters by spectral emission 11 Table 2 List of tests, their applicability to different classes of infrared emitters and the number of emitters needed for the tests 13 Table A.1 The generalised Wiens displacement law 35 Table B.1 Classification based on terms
36、 defined in IEC 60050-841:2004 37 Table D.1 Zonal spherical factors and corresponding angles 40 Table F.1 Instantaneous end-of-life 43 Table F.2 Gradual degradation. 44 IEC 62798:2014 IEC 2014 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL ELECTROHEATING EQUIPMENT Test methods for infrared
37、 emitters 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 standardizat
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47、he 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 62798 has been prepared by IEC technical committee 27: Industrial electroheating and elect
48、romagnetic processing. The text of this standard is based on the following documents: CDV Report on voting 27/938/CDV 27/942/RVC 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 ac
49、cordance with the ISO/IEC Directives, Part 2. 6 IEC 62798:2014 IEC 2014 INTRODUCTION This standard on particular test methods for infrared electroheating emitters is one of TC 27 standards that describe test methods for various types of electroheating installations. This standard is solely concerned with tests for infrared emitters. Tests that focus on the performance of infrared equipment or installations are covered by IEC
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