IEC TR 61547-1:2017

IEC TR 61547-1 ®
Edition 2.0 2017-10
TECHNICAL
REPORT
colour
inside
Equipment for general lighting purposes – EMC immunity requirements–
Part 1: An objective light flickermeter and voltage fluctuation immunity test
method
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IEC TR 61547-1 ®
Edition 2.0 2017-10
TECHNICAL
REPORT
colour
inside
Equipment for general lighting purposes – EMC immunity requirements–

Part 1: An objective light flickermeter and voltage fluctuation immunity test

method
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.20 ISBN 978-2-8322-4904-8

– 2 – IEC TR 61547-1:2017 © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions, abbreviated terms and symbols . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 9
3.3 Symbols . 9
4 General . 10
5 Light flickermeter . 11
6 Voltage fluctuation disturbance signal . 11
6.1 General . 11
6.2 Mains signal parameters . 13
6.3 Disturbance signal parameters and test levels . 13
7 Test setup and equipment . 15
7.1 General . 15
7.2 Test voltage . 15
7.3 Optical test environment . 16
7.4 Light sensor and amplifier . 16
7.5 Signals to be measured . 16
7.6 Signal processing . 17
7.6.1 Anti-aliasing filter . 17
7.6.2 Sampling frequency . 17
7.6.3 Signal resolution . 18
8 Verification procedure . 19
8.1 General . 19
8.2 Light flickermeter . 19
8.3 Mains voltage parameters without modulation . 20
8.3.1 Nominal voltage level . 20
8.3.2 Mains frequency . 20
8.4 Voltage fluctuation level . 20
8.4.1 General . 20
8.4.2 Option 1: measure the actual modulation frequencies and voltage levels . 20
V
8.4.3 Option 2: measure P -values using a flickermeter . 20
st
8.5 Light sensor and amplifier . 21
8.6 Test environment . 21
8.7 Light flicker noise . 21
9 Test procedure . 21
10 Conditions during testing . 22
11 Evaluation of the test result . 22
12 Test report . 23
Annex A (informative) Specification of the light flickermeter . 24
A.1 Voltage flickermeter . 24
A.2 Specification of the light flickermeter . 25
A.2.1 General . 25

A.2.2 Block a: illuminance adapter . 25
A.2.3 Block b: weighting filters . 25
A.2.4 Block c: squaring multiplier, sliding mean filter and scaling . 26
A.2.5 Block d: statistical analysis . 26
A.3 Verification of the light flickermeter . 27
LM ®
A.4 Example of P implementation in MATLAB . 27
st
Annex B (informative) Uncertainty considerations . 28
B.1 General . 28
B.2 General symbols . 28
B.3 Measurand . 28
B.4 Influence quantities . 28
B.5 Uncertainty budget . 30
Annex C (informative) Examples of test results of lighting equipment . 32
C.1 Test without voltage fluctuations . 32
C.2 Test with (intentional) voltage fluctuations . 32
C.3 Test under dimming conditions. 36
Bibliography . 38

Figure 1 – Full EMC approach for mains voltage fluctuations . 11
Figure 2 – Definition of the mains test signal including a rectangular modulated
voltage fluctuation (see Equation (1)) . 13
Figure 3 – Block diagram voltage-fluctuation immunity test . 15
Figure 4 – Example of a recorded mains voltage fluctuation and illuminance signal of a
60 W incandescent lamp . 19
Figure A.1 – Structure of the IEC 61000-4-15 flickermeter which uses voltage as input . 24
Figure A.2 – Structure of the light flickermeter . 24
LM
Figure C.1 – Graphical P results for three EUTs with rectangular modulation at five
st
V
frequencies ( P = 1) . 33
st
Figure C.2 – EUT1: recorded signals (no mains voltage modulation) . 34
Figure C.3 – EUT1: recorded signals (with modulation) . 35
Figure C.4 – EUT2: relative illuminance: mains voltage modulation d = 0,407 % at
V
13,5 Hz ( P = 1) . 36
st
Figure C.5 – EUT3: relative illuminance: mains voltage modulation d = 0,407 % at
V
13,5 Hz ( P = 1) . 36
st
LM
Figure C.6 – Graphical P results for four EUTs under dimming conditions . 37
st
Table 1 – Voltage fluctuations – Test specification of voltage fluctuations applied at

input AC power ports 120/230 V; 50/60 Hz . 14
Table A.1 – Test specification of illuminance fluctuations for lightmeter classifier . 27
Table B.1 – Influence quantities and their recommended tolerances . 29
Table B.2 – Uncertainty budget of the voltage fluctuation immunity test . 31
LM
Table C.1 – Numerical results calculations for three EUTs without voltage modulation . 32
P
st
LM
Table C.2 – Numerical results P calculations for three EUTs with voltage modulation . 32
st
Table C.3 – Numerical results P calculations for four EUTs under dimming conditions . 37
st
– 4 – IEC TR 61547-1:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
EQUIPMENT FOR GENERAL LIGHTING PURPOSES –
EMC IMMUNITY REQUIREMENTS–
Part 1: An objective light flickermeter and voltage fluctuation
immunity test method
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 standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards,
...