WG 5 - TC 34/WG 5

IEC TR 61547-1:2020 is available as IEC TR 61547-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC TR 61547-1:2020 describes an objective light flickermeter, which can be applied for the following purposes:
- 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;
- 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. This third edition cancels and replaces the second edition published in 2017. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the scope of this document has been clarified to make a distinction between flicker testing without voltage fluctuations to measure the intrinsic performance of lighting equipment and flicker testing in which a specific set of voltage fluctuations are applied in order to measure the immunity of the lighting equipment to voltage fluctuations present on the mains;
- the test procedure for flicker testing has been clarified.

IEC 63129:2020 describes a method, based on measurements combined with calculations, to determine specific characteristics of the inrush current of single and/or multiple lighting products of the same type. Lighting products include the following:
light sources with integrated controlgear,
controlgear,
luminaires.

IEC 61547:2020 is available as IEC 61547:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61547:2020 which deals with electromagnetic immunity requirements, applies to lighting equipment which is within the scope of IEC technical committee 34, including apparatus such as lamps, luminaires, and modules. This third edition cancels and replaces the second edition, published in 2009. This edition constitutes a technical revision This edition includes the following significant technical changes with respect to the previous edition:
- extension of scope with end-user replaceable modules and the combination of end-user replaceable module and independent auxiliary;
- clarification of module testing in a host system;
- increased ESD and surge test levels for road and street lighting equipment;
- the introduction of ESD testing under normal operation and handling conditions;
- removal of line to ground surge test for self-ballasted lamps ≤ 25 W.

IEC TR 61547-1:2017(E) describes an objective light flickermeter, which can be applied for, amongst others, the following purposes:
- testing the intrinsic performance of all lighting equipment without voltage fluctuations;
- testing the immunity performance of lighting equipment against (unintentional) voltage fluctuation disturbance on the AC power port;
- testing the immunity performance of lighting equipment against intentional voltage fluctuation on the AC power port arising for example from ripple control systems.
This second edition cancels and replaces the first edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a. the title of Part 1 has been changed to reflect the more general application of the objective flickermeter;
b. the specific voltage fluctuation immunity test method has been extended for lighting equipment rated for 120 V AC and 230 V AC, 50 Hz and 60 Hz.