BSI PD IEC TR 61547-1:2020
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Equipment for general lighting purposes. EMC immunity requirements – Objective light flickermeter and voltage fluctuation immunity test method
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 50 |
This part of IEC 61547 describes an objective light flickermeter, which can be applied for the following purposes:
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measuring the intrinsic performance of all lighting equipment without the application of voltage fluctuations in terms of illuminance flicker; during this measurement, the lighting equipment is supplied with a stable mains;
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testing the immunity performance of lighting equipment against (unintentional) voltage fluctuation disturbance on the AC mains in terms of illuminance flicker; during this test a set of defined voltage fluctuations are applied to the AC mains and the immunity of the lighting equipment to the disturbance is determined.
Apart from the above two purposes, the immunity performance of lighting equipment can also be tested against intentional voltage fluctuation on the AC mains arising for example from mains signalling. This is however not described in further detail in this document.
NOTE 1 IEC 61000-4-13:2015 [24] provides guidance regarding test levels and frequencies for mains signalling.
The object of this document is to establish a common and objective reference for evaluating the performance of lighting equipment in terms of illuminance flicker. Temporal changes in the colour of light (chromatic flicker) are not considered in this test.
This method can be applied to lighting equipment which is within the scope of IEC technical committee 34, such as lamps and luminaires, intended for connection to a low voltage electricity supply. Independent auxiliaries such as drivers can also be tested by application of a representative light source to that auxiliary.
The objective light flickermeter and voltage fluctuation immunity method described in this document are based on the IEC 61000-3-3 standard for voltage fluctuation limits and the flickermeter standard IEC 61000-4-15.
The objective light flickermeter described in this document can be applied to objectively assess flicker of lighting equipment that is powered from any type of source, AC mains, DC mains, battery fed or fed through an external light level regulator. The specific voltage fluctuation immunity test method described in this document applies to lighting equipment rated for 120 V AC and 230 V AC, 50 Hz and 60 Hz.
NOTE 2 The principle of the method can be applied for other nominal voltages and frequency ratings.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | CONTENTS |
| 7 | FOREWORD |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms, definitions, abbreviated terms and symbols 3.1 Terms and definitions |
| 12 | 3.2 Abbreviated terms |
| 13 | 3.3 Symbols 4 General |
| 14 | Figures Figure 1 – Full EMC approach for mains voltage fluctuations |
| 15 | 5 Light flickermeter 6 Voltage fluctuation disturbance signal 6.1 General |
| 16 | 6.2 Mains signal parameters Figure 2 – Illustration of the mains test signal including a rectangular modulated voltage fluctuation (see Equation (1)) |
| 17 | 6.3 Disturbance signal parameters and test levels |
| 18 | 7 Test setup and equipment 7.1 General Tables Table 1 – Voltage fluctuations – Test specification of voltage fluctuations applied at input AC mains 120/230 V and 50/60 Hz |
| 19 | 7.2 Test voltage 7.3 Optical test environment Figure 3 – Block diagram voltage-fluctuation immunity test |
| 20 | 7.4 Light sensor and amplifier 7.5 Signals to be measured 7.6 Signal processing 7.6.1 Anti-aliasing filter |
| 21 | 7.6.2 Sampling frequency 7.6.3 Signal resolution |
| 23 | 8 Verification procedure 8.1 General 8.2 Light flickermeter Figure 4 – Example of a recorded mains voltage fluctuation and illuminance signal of a 60 W incandescent lamp |
| 24 | 8.3 Mains voltage parameters without modulation 8.3.1 Nominal voltage level 8.3.2 Mains frequency 8.4 Voltage fluctuation level 8.4.1 General 8.4.2 Option 1: measure the actual modulation frequencies and voltage levels 8.4.3 Option 2: measure PstV values using a flickermeter |
| 25 | 8.5 Light sensor and amplifier 8.6 Test environment 8.7 Light flicker noise |
| 26 | 9 Test procedure 9.1 General |
| 27 | 9.2 Measuring the intrinsic flicker performance Table 2 – Guidance for PstLM testing |
| 28 | 9.3 Testing the flicker immunity against voltage fluctuations 9.4 Dimmer compatibility testing Figure 5 – Measuring PstLM Figure 6 – Measuring PstLM (I) Figure 7 – Dimmer compatibility testing |
| 29 | 9.5 Controlgear testing 10 Conditions during testing Figure 8 – Controlgear testing |
| 30 | 11 Evaluation of the test result 12 Test report |
| 31 | Annexes Annex A (informative) Specification of the light flickermeter A.1 Voltage flickermeter modifications Figure A.1 –Structure of the IEC 61000-4-15 flickermeter that uses voltage as input Figure A.2 – Structure of the light flickermeter based on a modified voltage flickermeter |
| 32 | A.2 Specification of the light flickermeter A.2.1 General A.2.2 Block a: illuminance adapter A.2.3 Block b: weighting filters |
| 33 | A.2.4 Block c: squaring multiplier, sliding mean filter and scaling A.2.5 Block d: statistical analysis |
| 34 | A.3 Verification of the light flickermeter Table A.1 – Test specification of illuminance fluctuations for lightmeter classifier |
| 35 | A.4 Example of PstLM implementation in MATLAB® Figure A.3 – Flickermeter response to different waveshapes |
| 36 | Annex B (informative) Uncertainty considerations B.1 General B.2 General symbols B.3 Measurand B.4 Influence quantities |
| 37 | Table B.1 – Influence quantities and their recommended tolerances |
| 38 | B.5 Uncertainty budget |
| 39 | Table B.2 – Uncertainty budget of the voltage fluctuation immunity test |
| 40 | Annex C (informative) Examples of test results of lighting equipment C.1 Test without voltage fluctuations (PstLM) C.2 Test with (intentional) voltage fluctuations PstLM (I) Table C.1 – Numerical results PstLM calculations for three EUTs without voltage modulation Table C.2 – Numerical results PstLM (I) calculations for three EUTs with voltage modulation |
| 41 | Figure C.1 – Graphical PstLM (I) results for three EUTs with rectangular modulation at five frequencies (PstV=1) |
| 42 | Figure C.2 – EUT1: recorded signals (no mains voltage modulation) |
| 43 | Figure C.3 – EUT1: recorded signals (with modulation) |
| 44 | C.3 Test under dimming conditions Figure C.4 – EUT2: relative illuminance – Mains voltage modulation d = 0,407 % at 13,5 Hz (PstV) Figure C.5 – EUT3: relative illuminance – Mains voltage modulation d = 0,407 % at 13,5 Hz (PstV) |
| 45 | Figure C.6 – Graphical PstLM(C) results for four EUTs under dimming conditions Table C.3 – Numerical results PstLM (C) calculations for four EUTs under dimming conditions |
| 46 | Annex D (informative) Guidance for PstLM testing based on test type Table D.1 – Guidance for testing based on test conditions |
| 47 | Bibliography |
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BSI PD IEC TR 61547-1:2020
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