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IEC TR 61547-1
Edition 3.0 2020-07
TECHNICAL
REPORT
colour
inside
Equipment for general lighting purposes – EMC immunity requirements –
Part 1: Objective light flickermeter and voltage fluctuation immunity test method
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IEC TR 61547-1
Edition 3.0 2020-07
TECHNICAL
REPORT
colour
inside
Equipment for general lighting purposes – EMC immunity requirements –
Part 1: Objective light flickermeter and voltage fluctuation immunity test method
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.20 ISBN 978-2-8322-8532-9
– 2 – IEC TR 61547-1:2020 © IEC 2020
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions, abbreviated terms and symbols . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 10
3.3 Symbols . 11
4 General . 11
5 Light flickermeter . 13
6 Voltage fluctuation disturbance signal . 13
6.1 General . 13
6.2 Mains signal parameters . 14
6.3 Disturbance signal parameters and test levels . 15
7 Test setup and equipment . 16
7.1 General . 16
7.2 Test voltage . 17
7.3 Optical test environment . 17
7.4 Light sensor and amplifier . 18
7.5 Signals to be measured . 18
7.6 Signal processing . 18
7.6.1 Anti-aliasing filter . 18
7.6.2 Sampling frequency . 19
7.6.3 Signal resolution . 19
8 Verification procedure . 21
8.1 General . 21
8.2 Light flickermeter . 21
8.3 Mains voltage parameters without modulation . 22
8.3.1 Nominal voltage level . 22
8.3.2 Mains frequency . 22
8.4 Voltage fluctuation level . 22
8.4.1 General . 22
8.4.2 Option 1: measure the actual modulation frequencies and voltage levels . 22
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8.4.3 Option 2: measure values using a flickermeter . 22
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8.5 Light sensor and amplifier . 23
8.6 Test environment . 23
8.7 Light flicker noise . 23
9 Test procedure . 24
9.1 General . 24
9.2 Measuring the intrinsic flicker performance . 25
9.3 Testing the flicker immunity against voltage fluctuations . 26
9.4 Dimmer compatibility testing . 26
9.5 Controlgear testing . 27
10 Conditions during testing . 27
11 Evaluation of the test result . 28
12 Test report . 28
Annex A (informative) Specification of the light flickermeter . 29
A.1 Voltage flickermeter modifications . 29
A.2 Specification of the light flickermeter . 30
A.2.1 General . 30
A.2.2 Block a: illuminance adapter . 30
A.2.3 Block b: weighting filters . 30
A.2.4 Block c: squaring multiplier, sliding mean filter and scaling . 31
A.2.5 Block d: statistical analysis . 31
A.3 Verification of the light flickermeter . 32
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A.4 Example of implementation in MATLAB . 33
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Annex B (informative) Uncertainty considerations . 34
B.1 General . 34
B.2 General symbols . 34
B.3 Measurand . 34
B.4 Influence quantities . 34
B.5 Uncertainty budget . 36
Annex C (informative) Examples of test results of lighting equipment . 38
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C.1 Test without voltage fluctuations ( ) . 38
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st
LM
C.2 Test with (intentional) voltage fluctuations (I) . 38
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C.3 Test under dimming conditions. 42
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Annex D (informative) Guidance for testing based on test type . 44
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st
Bibliography . 45
Figure 1 – Full EMC approach for mains voltage fluctuations . 12
Figure 2 – Illustration of the mains test signal including a rectangular modulated
voltage fluctuation (see Equation (1)) . 14
Figure 3 – Block diagram voltage-fluctuation immunity test . 17
Figure 4 – Example of a recorded mains voltage fluctuation and illuminance signal of a
60 W incandescent lamp . 21
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P
Figure 5 – Measuring . 26
st
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P
Figure 6 – Measuring (I) . 26
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Figure 7 – Dimmer compatibility testing . 26
Figure 8 – Controlgear testing . 27
Figure A.1 –Structure of the IEC 61000-4-15 flickermeter that uses voltage as input . 29
Figure A.2 – Structure of the light flickermeter based on a modified voltage flickermeter . 29
Figure A.3 – Flickermeter response to different waveshapes . 33
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Figure C.1 – Graphical P I results for three EUTs with rectangular modulation at
( )
st
V
five frequencies ( P = 1) . 39
st
Figure C.2 – EUT1: recorded signals (no mains voltage modulation) . 40
Figure C.3 – EUT1: recorded signals (with modulation) . 41
– 4 – IEC TR 61547-1:2020 © IEC 2020
Figure C.4 – EUT2: relative illuminance – Mains voltage modulation d = 0,407 % at
V
13,5 Hz ( P = 1) . 42
st
Figure C.5 – EUT3: relative illuminance – Mains voltage modulation d = 0,407 % at
V
13,5 Hz ( P = 1) . 42
st
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Figure C.6 – Graphical (C) results for four EUTs under dimming conditions . 43
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Table 1 – Voltage fluctuations – Test specification of voltage fluctuations applied at
input AC mains 120/230 V and 50/60 Hz . 16
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Table 2 – Guidance for P testing . 25
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Table A.1 – Test specification of illuminance fluctuations for lightmeter classifier . 32
Table B.1 – In
...