IEC 60929:2011

AC and/or DC-supplied electronic control gear for tubular fluorescent lamps - Performance requirements

IEC 60929:2011 specifies performance requirements for electronic control gear for use on a.c. at 50 Hz or 60 Hz and/or d.c. supplies, both up to 1 000 V, with operating frequencies deviating from the supply frequency, associated with fluorescent lamps as specified in IEC 60081 and IEC 60901, and other fluorescent lamps for high-frequency operation. This fourth edition cancels and replaces the third edition published in 2006, IEC 60925 published in 1989, its Amendment 1 (1996) and its Amendment 2 (2001). This fourth edition constitutes a technical revision. The essential change with respect to the third edition is the extension to DC supplied control gear and the deletion of the requirements for digital signal control of electronic control gear. The contents of the corrigendum of September 2011 have been included in this copy.

Appareillages électroniques alimentés en courant alternatif et/ou continu pour lampes tubulaires à fluorescence - Exigences de performances

La CEI 60929:2011 spécifie les exigences de performances pour les appareillages électroniques alimentés en courant alternatif 50 Hz ou 60 Hz et/ou continu jusqu'à 1 000 V à, avec des fréquences de travail s'écartant de la fréquence d'alimentation, et utilisés en association avec des lampes à fluorescence comme celles indiquées dans la CEI 60081 et la CEI 60901, ou avec d'autres types de lampes à fluorescence pour fonctionnement à haute fréquence. Cette quatrième édition annule et remplace la troisième édition parue en 2006, la CEI 60925 parue en 1989, son amendement 1 (1996) et son amendement 2 (2001). Cette quatrième édition constitue une révision technique. Les modifications majeures par rapport à la troisième édition concernent l'extension aux appareillages alimentés en courant continu et la suppression des exigences pour les commandes par signaux numériques des appareillages électroniques. Le contenu du corrigendum de septembre 2011 a été pris en considération dans cet exemplaire.

General Information

• Status: Published
• Publication Date: 18-May-2011
• ICS: 19.080 - Electrical and electronic testing
• ICS: 29.140.30 - Fluorescent lamps. Discharge lamps
• ICS: 71.040.40 - Chemical analysis
• Technical Committee: SC 34C - Auxiliaries for lamps
• Drafting Committee: WG 1 - TC 34/SC 34C/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 19-May-2011
• Completion Date: 15-Jun-2011

Relations

• Replaces: IEC 60925:1989 - D.C. supplied electronic ballasts for tubular fluorescent lamps - Performance requirements
• Effective Date: 05-Sep-2023
• Replaces: IEC 60925:1989/AMD2:2001 - Amendment 2 - D.C. supplied electronic ballasts for tubular fluorescent lamps - Performance requirements
• Effective Date: 05-Sep-2023
• Amended By: IEC 60929:2011/AMD1:2015 - Amendment 1 - AC and/or DC-supplied electronic control gear for tubular fluorescent lamps - Performance requirements
• Effective Date: 05-Sep-2023
• Corrected By: IEC 60929:2011/COR1:2011 - Corrigendum 1 - AC and/or DC-supplied electronic control gear for tubular fluorescent lamps - Performance requirements
• Effective Date: 05-Sep-2023
• Revises: IEC 60929:2006 - AC-supplied electronic ballasts for tubular fluorescent lamps - Performance requirements
• Effective Date: 05-Sep-2023

Overview

IEC 60929:2011 is an international standard established by the International Electrotechnical Commission (IEC) that sets forth the performance requirements for electronic control gear used with tubular fluorescent lamps. This standard specifically covers control gear designed for operation on both alternating current (AC) at 50 Hz or 60 Hz and/or direct current (DC) supplies up to 1,000 V. The control gear may operate at frequencies that deviate from the supply frequency and supports fluorescent lamps compliant with IEC 60081, IEC 60901, and other lamps designed for high-frequency operation.

The fourth edition of IEC 60929, published in 2011, consolidates earlier versions, introduces extensions to support DC-supplied control gear, and removes requirements related to digital signal control of the electronic control gear. This revision reflects advancements in lamp technology and control electronics, helping manufacturers and users ensure compatibility, safety, and reliable performance.

Key Topics

• Scope and Application: Specifies testing and performance for electronic ballasts and control gear tailored to tubular fluorescent lamps operating on AC and/or DC supplies up to 1,000 V.
• Starting and Operating Conditions: Defines requirements for starting methods including preheating, open-circuit voltage limits, control gear impedance, and cathode current parameters to ensure reliable lamp ignition and steady operation.
• Marking and Information: Mandates clear labeling and provision of essential data such as control gear lifetime, electrical ratings, and operating parameters to facilitate identification and compliance verification.
• Dimming and Control Interfaces: Outlines conditions and interfaces for dimmable control gear, including heating of lamp cathodes, current limitation strategies, and recommended control signals for adjustable light levels.
• Electrical Performance: Addresses power factor, supply current characteristics, current waveform quality, and limits on parasitic impedances to promote energy efficiency and electromagnetic compatibility.
• Abnormal and End-of-Life Behavior: Includes operational tests under abnormal conditions such as lamp removal, failure to start, and control gear response near the lamp’s end of life, ensuring safe and predictable behavior.
• Endurance Testing: Defines procedures for temperature cycling, long-term operation at elevated temperatures, and durability assessments to guarantee product reliability.
• Annexes and Test Methods: Contains detailed normative and informative annexes describing test setups, reference lamps and ballasts, explanations of starting conditions, and control interface specifications.

Applications

IEC 60929:2011 is essential for:

• Manufacturers of electronic control gear and ballasts aimed at industrial, commercial, and residential lighting markets using tubular fluorescent lamps.
• Quality and Compliance Testing Labs that evaluate control gear performance against harmonized international standards.
• Lighting Designers and Engineers seeking dependable, standardized specifications to select compatible and efficient electronic control systems.
• Regulatory Bodies and Certification Organizations interested in establishing safety, performance, and interoperability criteria for fluorescent lamp control gear.
• Maintenance and Installation Professionals who need assurance that control gear meets operational and safety requirements when retrofitting or servicing fluorescent lighting installations.

By adhering to IEC 60929, stakeholders ensure that control gear products deliver consistent starting, dimming, energy efficiency, electromagnetic compatibility, and longevity, compatible with modern tubular fluorescent lamp technologies on both AC and DC power supplies.

Related Standards

• IEC 60081 - Fluorescent Lamps - Performance Specifications for Tubular Fluorescent Lamps
• IEC 60901 - Self-Ballasted Fluorescent Lamps
• IEC 60925 - Previous edition related to electronic control gear (superseded by IEC 60929)
• IEC 61347 series - Lamp Control Gear general and safety requirements
• IEC 61000 series - Electromagnetic Compatibility (EMC) standards relevant to fluorescent lamp control gear
• IEC TR 62778 - Methodology for assessing blue light hazard from lamps and LED lighting products

Using IEC 60929 in conjunction with these standards supports holistic compliance across electrical performance, safety, and environmental impact for fluorescent lighting systems worldwide.

---

Keywords: IEC 60929, electronic control gear, tubular fluorescent lamps, AC supply, DC supply, performance requirements, electronic ballast, fluorescent lamp control, lamp dimming, power factor, lamp starting conditions, lighting standards, IEC fluorescent lamp standards.

Standards Content (Sample)

IEC 60929 ®
Edition 4.0 2011-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –
Performance requirements
Appareillages électroniques alimentés en courant alternatif et/ou continu pour
lampes tubulaires à fluorescence – Exigences de performances

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by
any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or
IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
Si vous avez des questions sur le copyright de la CEI ou si vous désirez obtenir des droits supplémentaires sur cette
publication, utilisez les coordonnées ci-après ou contactez le Comité national de la CEI de votre pays de résidence.

IEC Central Office
3, rue de Varembé
CH-1211 Geneva 20
Switzerland
Email: [e-mail]
Web: www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
 Catalogue of IEC publications: www.iec.ch/searchpub
The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,…).
It also gives information on projects, withdrawn and replaced publications.
 IEC Just Published: www.iec.ch/online_news/justpub
Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available
on-line and also by email.
 Electropedia: www.electropedia.org
The world's leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions
in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical
Vocabulary online.
 Customer Service Centre: www.iec.ch/webstore/custserv
If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service
Centre FAQ or contact us:
Email: [e-mail]
Tel.: [phone]
Fax: [phone]
A propos de la CEI
La Commission Electrotechnique Internationale (CEI) est la première organisation mondiale qui élabore et publie des
normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications CEI
Le contenu technique des publications de la CEI est constamment revu. Veuillez vous assurer que vous possédez
l’édition la plus récente, un corrigendum ou amendement peut avoir été publié.
 Catalogue des publications de la CEI: www.iec.ch/searchpub/cur_fut-f.htm
Le Catalogue en-ligne de la CEI vous permet d’effectuer des recherches en utilisant différents critères (numéro de référence,
texte, comité d’études,…). Il donne aussi des informations sur les projets et les publications retirées ou remplacées.
 Just Published CEI: www.iec.ch/online_news/justpub
Restez informé sur les nouvelles publications de la CEI. Just Published détaille deux fois par mois les nouvelles
publications parues. Disponible en-ligne et aussi par email.
 Electropedia: www.electropedia.org
Le premier dictionnaire en ligne au monde de termes électroniques et électriques. Il contient plus de 20 000 termes et
définitions en anglais et en français, ainsi que les termes équivalents dans les langues additionnelles. Egalement appelé
Vocabulaire Electrotechnique International en ligne.
 Service Clients: www.iec.ch/webstore/custserv/custserv_entry-f.htm
Si vous désirez nous donner des commentaires sur cette publication ou si vous avez des questions, visitez le FAQ du
Service clients ou contactez-nous:
Email: [e-mail]
Tél.: [phone]
Fax: [phone]
IEC 60929 ®
Edition 4.0 2011-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –
Performance requirements
Appareillages électroniques alimentés en courant alternatif et/ou continu pour
lampes tubulaires à fluorescence – Exigences de performances

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX X
ICS 29.140.30 ISBN 978-2-88912-509-8

– 2 – 60929 © IEC:2011
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General notes on tests . 9
5 Marking . 10
5.1 Mandatory marking . 10
5.2 Additional mandatory Information . 10
5.3 Non-mandatory information . 10
6 General statement . 11
7 Starting conditions . 11
7.1 General . 11
7.2 Conditions for control gear with preheating . 11
7.2.1 General . 11
7.2.2 Preheat energy . 11
7.2.3 Open-circuit voltage . 12
7.3 Conditions for control gear without preheating . 13
7.3.1 General . 13
7.3.2 Open-circuit voltage . 13
7.3.3 Control gear impedance test . 13
7.3.4 Cathode current . 13
7.4 Starting aid and distances . 14
8 Operating conditions . 14
8.1 Ballast lumen factor . 14
8.2 Total circuit power . 14
8.3 Requirements for dimming . 14
8.3.1 Lamp cathode heating . 14
8.3.2 Control interfaces . 14
8.4 Current limitation . 14
9 Circuit power factor . 14
10 Supply current . 15
11 Maximum current in any lead to a cathode . 15
12 Lamp operating current waveform . 15
13 Impedance at audio frequencies . 15
14 Operational tests for abnormal conditions . 16
14.1 Removal of lamp(s) . 16
14.2 Lamp fails to start . 16
14.3 Control gear behaviour close to end of lamp life . 16
15 Endurance . 16
15.1 General . 16
15.2 Temperature cycling . 16
15.3 Test at tc +10 K . 17
Annex A (normative) Tests . 21
Annex B (normative) Reference ballasts . 26

60929 © IEC:2011 – 3 –
Annex C (normative) Conditions for reference lamps . 30
Annex D (informative) Explanation of starting conditions . 31
Annex E (normative) Control interface for controllable control gear . 35
Bibliography . 40

Figure 1 – Schematic illustration of the energy required for preheating and starting . 18
Figure 2 – Test circuits for non-preheat starting mode . 20
Figure A.1 – Measurement of impedance at audio frequencies. 24
Figure A.2 – Test circuit for control gear for preheat starting mode . 25
Figure B.1 – HF reference circuit . 29
Figure E.1 – Functional specification for d.c. voltage control . 35
Figure E.2 – Connection diagram for several controllable control gear . 36
Figure E.3 – Circuit diagram with current sourcing . 36
Figure E.4 – Functional specification for PWM control . 37
Figure E.5 – PWM signal characteristics . 37
Figure E.6 – Connecting diagram for PWM controllable control gear . 38
Figure E.7 – Dimming curve for controllable control gear . 39

Table 1 – Control gear life time information . 10

– 4 – 60929 © IEC:2011
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
AC and/or DC-SUPPLIED ELECTRONIC CONTROL GEAR
FOR TUBULAR FLUORESCENT LAMPS –
PERFORMANCE REQUIREMENTS
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, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the 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 60929 has been prepared by subcommittee 34C: Auxiliaries for
lamps, of IEC technical committee 34: Lamps and related equipment.
This fourth edition cancels and replaces the third edition published in 2006, IEC 60925
published in 1989, its Amendment 1 (1996) and its Amendment 2 (2001). This fourth edition
constitutes a technical revision. The essential change with respect to the third edition is the
extension to DC supplied control gear and the deletion of the requirements for digital signal
control of electronic control gear.
The text of this standard is based on the following documents:
FDIS Report on voting
34C/963/FDIS 34C/976/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

60929 © IEC:2011 – 5 –
This publication has been drafted in accordance with ISO/IEC Directives, Part 2.
NOTE In this standard, the following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Explanatory matter: in smaller roman type.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
The contents of the corrigendum of September 2011 have been included in this copy.

– 6 – 60929 © IEC:2011
INTRODUCTION
This International Standard covers performance requirements for electronic control gear for
use on a.c., at 50 Hz or 60 Hz, and/or d.c. supplies up to 1 000 V with operating frequencies
deviating from the supply frequency, associated with tubular fluorescent lamps as specified in
IEC 60081 and IEC 60901, and other tubular fluorescent lamps for high frequency operation,
still to be standardised.
These control gear are intended to operate lamps at various frequencies including high
frequencies and at various lamp powers. Attention is drawn to the fact that operating
frequencies below 20 kHz may cause audio noise disturbance, whereas frequencies above
50 kHz may increase radio interference problems.
Some lamps may be specifically designed for high-frequency operation on high-frequency
control gear. Two starting modes, preheat and non-preheat, are described.
NOTE Lamps, only specified for preheat starting may be operated on other types of circuits. The control gear
manufacturer should provide test data which shows satisfactory starting and operation similar as the ones stated in
Clause 6.
In order to obtain satisfactory performance of fluorescent lamps and electronic control gears,
it is necessary that certain features of their design be properly co-ordinated. It is essential,
therefore, that specifications for them be written in terms of measurement made against some
common baseline of reference, permanent and reproducible.
These conditions may be fulfilled by reference ballasts. Moreover, the testing of control gear
for fluorescent lamps will, in general, be made with reference lamps and, in particular, by
comparing results obtained on such lamps with control gear to be tested and with reference
ballast.
Whereas the reference ballast for frequencies of 50 Hz or 60 Hz is a self-inductive coil, the
high-frequency reference ballast is a resistor because of its independence of frequency and
the lack of influence of parasitic capacitance.

60929 © IEC:2011 – 7 –
AC and/or DC-SUPPLIED ELECTRONIC CONTROL GEAR
FOR TUBULAR FLUORESCENT LAMPS –
PERFORMANCE REQUIREMENTS
1 Scope
This international Standard specifies performance requirements for electronic control gear for
use on a.c. at 50 Hz or 60 Hz and/or d.c. supplies, both up to 1 000 V, with operating
frequencies deviating from the supply frequency, associated with fluorescent lamps as
specified in IEC 60081 and IEC 60901, and other fluorescent lamps for high-frequency
operation.
NOTE 1 Tests in this standard are type tests. Requirements for testing individual control gear during production
are not included.
NOTE 2 There are regional standards regarding the regulation of mains current harmonics and immunity for end-
products like luminaires and independent control gear. In a luminaire, the control gear is dominant in this respect.
Control gear, together with other components, should comply with these standards.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60081:1997, Double-capped fluorescent lamps – Performance specifications
Amendment 1(2000)
Amendment 2 (2003)
Amendment 3 (2005)
Amendment 4 (2010)
IEC 60901:1996, Single-capped fluorescent lamps – Performance specifications
Amendment 1(1997)
Amendment 2 (2000)
Amendment 3 (2004)
Amendment 4 (2007)
IEC 61347-1:2007, Lamp controlgear – Part 1: General and safety requirements
Amendment 1(2010)
IEC 61347-2-3:2000, Lamp controlgear – Part 2-3: Particular requirements for a.c. supplied
electronic ballasts for fluorescent lamps
Amendment 1(2004)
Amendment 2 (2006)
IEC 62386 (all parts), Digital addressable lighting
———————
There exists a consolidated edition 2.1 (2010) that comprises IEC 61347-1:2007 and its Amendment 1 (2010).

– 8 – 60929 © IEC:2011
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
starting aid
a conductive strip affixed to the outer surface of a lamp, or a conductive plate which is spaced
within an appropriate distance from the lamp
A starting aid is usually connected to earth potential, and can only be effective when it has an
adequate potential difference from one end of the lamp.
3.2
ballast lumen factor
blf
ratio of the luminous flux of the lamp when the ballast under test is operated at its rated
voltage, to the luminous flux of the same lamp operated with the appropriate reference ballast
supplied at its rated voltage and frequency
3.3
reference ballast
special ballast, either inductive for lamps for operation on a.c. mains frequencies, or resistive
for lamps for operation on high frequency
It is designed for the purpose of providing comparison standards for use in testing ballasts, for
the selection of reference lamps and for testing regular production lamps under standardised
conditions. It is essentially characterised by the fact that, at its rated frequency, it has a stable
voltage/current ratio which is relatively uninfluenced by variations in current, temperature and
magnetic surroundings, as outlined in this standard.
[IEC 60050-845:1987, 845-08-36, modified]
3.4
reference lamp
lamp selected for testing control gear which, when associated with a reference ballast, has
electrical characteristics which are close to the nominal values as stated in the relevant lamp
standard
NOTE Specified conditions are given in Annex C.
3.5
total circuit power
total power dissipated by control gear and lamp in combination, at rated voltage and
frequency of the control gear
3.6
circuit power factor
λ
power factor of the combination of a control gear and the lamp or lamps for which the control
gear is designed
3.7
preheat starting
type of circuit in which the lamp electrodes are brought to emission temperature before the
lamp actually ignites
60929 © IEC:2011 – 9 –
3.8
non-preheat starting
type of circuit which utilises a high open-circuit voltage causing secondary electron emission
from electrodes
3.9
electronic control gear life time
declared average life time at which 90 % of the electronic control gears are still operating
NOTE 1 In the context of life time, an electronic control gear is “operating” if it still fulfils it intended functions.
NOTE 2 The manufacturer apply suitable methods, e.g. statistical calculation and/or reliability testing.
3.10
ambient temperature
t
a
temperature range of the air surrounding the electronic control gear declared by the
manufacturer to indicate the normal operating temperature range for the electronic control
gear
NOTE 1 The lifetime of the electronic control gear is given at the ambient temperature ta; for ease of
measurement, also the corresponding temperature of the tc point is given.
NOTE 2 The measurement test condition for the ambient temperature assigned to the DUT should be in
accordance to Annex D of IEC 61347-1 at the rated voltage.
4 General notes on tests
4.1 Tests according to this standard are type tests.
NOTE The requirements and tolerances permitted by this standard are based on the testing of a type test sample
submitted by the manufacturer for that purpose. In principle this type test sample should consist of units having
characteristics typical of the manufacturer’s production and be as close to the production centre point values as
possible.
It may be expected with the tolerances given in this standard that products manufactured in accordance with the
type test sample will ensure compliance with the standard for the majority of the production. However, due to the
production spread, it is inevitable that there will sometimes be products outside the specified tolerances. For
guidance on sampling plans and procedures for inspection by attributes, see IEC 60410.
4.2 The tests are carried out in the order of the clauses, unless otherwise specified.
4.3 One control gear is submitted to all tests, unless otherwise stated.
4.4 In general, all tests are made on each type of control gear or where a power range of
similar control gear is involved, for each rated power in the range or on a representative
selection from the range as agreed with the manufacturer.
4.5 The tests are made under the conditions specified in Annex A. Lamp data sheets not
published in an IEC publication shall be made available by the lamp manufacturer.
4.6 All control gear specified in this standard shall comply with the requirements of
IEC 61347-2-3.
4.7 Attention is drawn to lamp performance standards which contain “information for
control gear design”; this should be followed for proper lamp operation; however, this
standard does not require the testing of lamp performance as part of the type test approval for
control gear.
– 10 – 60929 © IEC:2011
5 Marking
5.1 Mandatory marking
Electronic control gear shall be clearly marked with the following mandatory marking as
applicable.
a) Circuit power factor, e.g. 0,85.
If the power factor is less than 0,95 capacitive, it shall be followed by the letter C, e.g.
0,85 C.
The following marking shall also be added, if appropriate:
b) The symbol Z which indicates that the control gear is designed to comply with the
conditions for audio-frequency impedance.
5.2 Additional mandatory Information
In addition to the above mandatory markings, the following information shall either be given
on the control gear or be made available in the manufacturer’s catalogue or the like.
a) a clear indication regarding the type of starting, viz. preheat or non-preheat;
b) indication whether a control gear needs a starting aid;
c) ballast lumen factor if different from 1 ± 0,05;
d) life time of the control gear is linked to the ambient temperature and the measured
temperature on the reference point tc.
For the information, the format of Table 1 has to be used. Corresponding to the fixed
ambient temperature values 40 °C, 50 °C and 60 °C, the values of the temperature
measured on the reference point tc and the declared life time have to be inserted by the
manufacturer. The value of the temperature of the tc point given in the table shall never
exceed the tc (IEC 61347-1), therefore, in that case, the column where the temperature of
tc-point exceeds tc will be left blank; but at least the column with ambient temperature
40 °C shall always be filled.
Table 1 – Control gear life time information
Ambient temperature 40 °C 50 °C 60 °C
Temperature measured on the a a a
XX XX XX
reference point tc
b b b
Life time XX XXX XX XXX XX XXX
a
”°C” values declared by the control gear manufacturer
b
”h” values declared by the control gear manufacturer

NOTE 1 Additional information from the control gear manufacturer to the ambient temperature and life time given
in Table 1 is allowed.
NOTE 2 For multi power control gear the most adverse load condition or a table for each lamp-control gear
combination should be given.
5.3 Non-mandatory information
Non-mandatory information which may be made available by the manufacturer:
a) rated output frequency at rated voltage, with and without lamp operating;
b) limits of the ambient temperature range within which the control gear will operate
satisfactorily at the declared voltage (range);
c) total circuit power.
60929 © IEC:2011 – 11 –
6 General statement
It may be expected that control gear complying with this standard, when associated with
lamps which comply with IEC 60081 or IEC 60901 or other fluorescent lamps for high-
frequency operation, will provide satisfactory starting of the lamp at an air temperature
immediately around the lamp between 10 °C and 35 °C and operation between 10 °C and
50 °C at voltages within 92 % and 106 % of the rated voltage.
NOTE 1 The electrical characteristics as given on the lamp data sheets of IEC 60081 and IEC 60901, and
applying to operation on a reference control gear at rated voltage with a frequency of 50 Hz or 60 Hz, may deviate
when operating on a high frequency control gear and the conditions of item b) of 5.3 above.
NOTE 2 In some regions, there are laws on EMC for luminaires. The control gear is also contributing to this EMC
behaviour. See Bibliography for reference.
7 Starting conditions
7.1 General
Control gear shall start lamps without adversely affecting the performance of the lamp when
operated according to intended use. An explanation of the starting conditions is given in
Annex D.
Compliance is checked by the tests according to 7.2 to 7.4, as appropriate, with the control
gear operating at any supply voltage between 92 % and 106 % of its rated value.
7.2 Conditions for control gear with preheating
7.2.1 General
Control gear shall be tested according to the following requirements and in line with the
requirements of Clause A.3. The same requirements for preheating also apply to controllable
control gear at starting in any dimming position.
The lamp data sheet provides one substitution resistor R which is used with the control
sub(min)
gear in order to test its capability to produce the minimum energy according to the lamp data
sheet. If the control gear does not provide at least the minimum energy, it has failed. The
which
maximum energy line has to be tested with another substitution resistor R
sub(max)
corresponds to the upper energy. If the control gear generates too high energy, it has failed.
The value of the second resistor is also given on the lamp data sheet. In cases where no

value is given, preliminary values may be obtained from the lamp manufacturer.
7.2.2 Preheat energy
The control gear shall deliver at least the minimum total heating energy E at t according to
min 1
the time/energy limits on the relevant lamp data sheets (see Figure 1). Within the interval (t ,
t ) the total heating energy shall be between E and E according to the relevant lamp
2 min max
data sheet (see Figure 1).
The maximum heating energy shall not exceed the limits specified on the relevant lamp data
sheet at any time before t . This does not apply in the interval (t , t ), if t – t < 0,1 s.
2 1 2 2 1
The absolute minimum preheat time shall be 0,4 s unless otherwise specified on the relevant
lamp data sheet.
In order to prevent arcing, the voltage supplied to the substitution resistor should remain
below 11 V r.m.s., for E < E .
min
– 12 – 60929 © IEC:2011
If a lamp data sheet does not give any energy data for preheating, and the preheat current
requirements are not applicable, the lamp manufacturer shall provide appropriate preheat
data.
Compliance with the requirements for the cathode preheat current can be tested as follows.
With a non-inductive substitution resistor of the value specified on the relevant lamp data
sheet, substituted for each lamp cathode, the control gear shall deliver a minimum and
maximum total heating current according to the time/current limits specified on the relevant
lamp data sheet. The minimum preheat current i is defined as
k
a
i = + i
k m
t
e
where
a is the constant (A s) for a specific cathode type;
i is the absolute minimum value of the effective heating current (A) to achieve emission, if
m
application time is of sufficiently long duration (e.g. ≥ 30 s from cold);
t is the time (s) to emission.
e
NOTE Emission time less than 0,4 s is normally not acceptable because experience has shown that satisfactory
cathode preheating is not always achievable in practice.
Values for a and i are given on the lamp data sheet.
m
Measurements are conducted with a non-inductive substitution resistor for testing cathode
preheat requirements of the value specified on the relevant lamp data sheet, substituted for
each lamp cathode, also in case of two or more lamps simultaneously operated.
7.2.3 Open-circuit voltage
During the preheat period, the open-circuit voltage between any pair of substitution resistors
shall not exceed the maximum value specified on the lamp data sheet, including the DC-offset
according to Clause E.4 of IEC 60081, and Clause D.3 of IEC 60901. After the preheat period,
it shall be, or rise to a value, not less than the minimum value equal to the ignition voltage as
specified on the lamp data sheet.
Where two or more lamps are operated in series or parallel circuits, each position is
measured in turn. The positions where not to measure are equipped with reference lamps, the
position where to measure is equipped with a pair of substitution resistors for testing open-
circuit voltage.
The open-circuit voltage is measured between the substitution resistors and shall comply in
all cases with the value specified on the relevant lamp data sheet for one lamp.
Measurement is made with an oscilloscope. Measurements are conducted with a non-
inductive substitution resistor for testing open-circuit voltages as specified on the relevant
lamp data sheet.
The control gear manufacturer provides on request the value of the cathode substitution
resistor within the specified range which results in the lowest open-circuit voltage for ignition.

60929 © IEC:2011 – 13 –
7.3 Conditions for control gear without preheating
7.3.1 General
Control gear in accordance with definition 3.8 shall be so designed that the cumulated glow
discharge periods during starting do not exceed 100 ms when measured with a reference
lamp and without any earthed metal parts close by which might act as a starting aid. The glow
discharge period is deemed to have finished if the lamp current is at least 80 % of the rated
lamp current.
A control gear is deemed to conform with the above requirements when the following
conditions are fulfilled.
7.3.2 Open-circuit voltage
Measurement is made with an oscilloscope. With a non-inductive substitution resistor R of
C
the value specified on the relevant lamp data sheet, substituted for each lamp cathode (see
Figure 2a), the open-circuit voltage shall comply with the value specified on the relevant lamp
data sheet.
Where two or more lamps are operated in series or parallel, each position is measured in turn.
The positions where not to measure are equipped with reference lamps, the position where to
measure is equipped with a pair of cathode substitution resistors.
The open-circuit voltage is measured between the substitution resistors and shall comply in
all cases with the value specified on the relevant lamp data sheet for one lamp.
NOTE In the case of additional cathode heating during the starting process, lower values may be sufficient
provided the glow discharge period does not exceed 100 ms.
7.3.3 Control gear impedance test
With a non-inductive lamp substitution resistor R of the value specified on the relevant lamp
L
data sheet, substituted for the lamp and a non-inductive resistor R of the value specified on
C
the relevant lamp data sheet, substituted for each lamp cathode, (see Figure 2b), and at 92 %
of the rated voltage, the control gear shall deliver a current not less than the minimum value
specified on that data sheet.
7.3.4 Cathode current
Control gear of the non-preheat start type may supply some cathode heating during the
starting process. In Figure 2c, the cathode (heating) current is measured in M1 and M2 as the
lower current.
The cathode current, if any, shall not exceed the maximum value specified on the relevant
lamp data sheet.
The measurement is carried out with substitution resistors R (see Figure 2c), the value of
i
which is calculated as follows:
11V
R =
i
2,1x I
r
where I is the rated value of the lamp operating current.
r
This requirement does also apply to electronic control gear with output terminals for more
than one lamp. The positions where not to measure are equipped with reference lamps, the
position where to measure is equipped as shown in Figure 2c.

– 14 – 60929 © IEC:2011
7.4 Starting aid and distances
Lamps operated with electronic control gear complying with this standard may require a
starting aid as specified in IEC 60081 or 60901. The open-circuit voltage and voltage to
starting aid, during preheat and starting, shall be within the limits specified in the information
for control gear design on the relevant lamp data sheet.
8 Operating conditions
8.1 Ballast lumen factor
At rated voltage and ambient temperature of (25 ± 2) °C, the ballast lumen factor shall not be
less than 95 % of the value declared by the manufacturer or not less than 0,95 if not declared.
NOTE The luminous flux of a lamp is usually measured with an integrating photometer. For ratio measurements, a
suitable luxmeter is sufficient as there is close relationship between flux and luminous intensity at a fixed point.
If the declared lumen factor of the control gear is less than 0,9, evidence shall be given that
the performance of lamps operated on that control gear is not impaired.
The requirements of Subclause 8.3 shall be complied.
8.2 Total circuit power
At rated voltage, the total circuit power shall be not more than 110 % of the value declared by
the manufacturer, when the control gear is operated with (a) reference lamp(s).
8.3 Requirements for dimming
8.3.1 Lamp cathode heating
When operating lamps at lower lumen levels than the optimum design point, care shall be
taken that the control gear provides cathode heating continuously to the lamp(s) so that the
lamp life is not degraded.
8.3.2 Control interfaces
Requirements are specified in Annex E of this standard and for digital addressable lighting
interface in IEC 62386 series. Also the manufacturer’s specification shall be followed.
There are presently also other non-standardised interfaces which can lead to problems of
interchangeability between interfaces. These have to be tested according to the
manufacturer’s specifications.
8.4 Current limitation
Unless otherwise specified on the relevant lamp data sheet, the control gear at rated voltage
shall limit the current delivered to a reference lamp to a value not exceeding 115 % of that
delivered to the same lamp when it is operated with a reference control gear.
9 Circuit power factor
For the a.c. supplied electronic control gear, the measured circuit power factor shall not differ
from the marked value by more than 0,05 when the control gear is operated with one or more
reference lamp(s) and the whole combination is supplied at its rated voltage and frequency.
For controllable control gear, the power factor is measured at full power.

60929 © IEC:2011 – 15 –
10 Supply current
At rated voltage, the supply current shall not differ by more than ± 10 % from the value
marked on the control gear or declared in the manufacturer’s literature, when the control gear
is operated with (a) reference lamp(s).
For controllable control gear, the supply current shall not exceed the value marked on the
control gear according to IEC 61347-1 by more than 10 % in any dimming position. The scan
over all dimming positions can be replaced, if the value of the maximum supply current and
the corresponding dimming positions are provided.
11 Maximum current in any lead to a cathode
In normal operation at any supply voltage between 92 % and 106 % of the rated value, the
current flowing in any one of the cathode terminations shall not exceed the value given on the
relevant lamp data sheet.
The measurement is made with an oscilloscope or another suitable device. The
measurements shall be made with a reference lamp at all contacts to the cathodes.
12 Lamp operating current waveform
The control gear shall be operated with a reference lamp or lamps at its rated voltage. After
lamp stabilisation, the waveform of the lamp current shall comply with the following
conditions.
a) For a.c. supplied electronic control gear:
In every successive half-cycle, the enveloping wave of the lamp current shall not differ by
more than 4 % at the same time after phase zero passage of the mains supply voltage.
NOTE The purpose of this requirement is to avoid flicker due to the inconsistency of the wave shape of the
enveloping wave from half mains cycle to half mains cycle.
b) The maximum ratio of peak value to r.m.s. value of the lamp current shall not exceed 1,7.
NOTE In Japan, a crest factor of 2,1 maximum is permitted, when additional cathode heating is applied.
13 Impedance at audio frequencies
Control gears marked with the audio-frequency symbol (see 5.1) are tested in accordance
with Clause A.2.
For every signal frequency between 400 Hz and 2 000 Hz, the impedance of the control gear
when operated with a reference lamp supplied at its rated voltage and frequency shall be
inductive in characteristic. Its impedance in ohms shall be at least equal in value to the
resistance of the resistor which would dissipate the same power as the lamp/control gear
combination in question when it is supplied at its rated voltage and frequency. The control
gear impedance is measured with a signal voltage equal to 3,5 % of the rated supply voltage
of the control gear.
Between 250 Hz and 400 Hz, the impedance shall be at least equal to half the minimum value
required for frequencies between 400 Hz and 2 000 Hz.
NOTE Radio interference suppressors consisting of capacitors of less than 0,2 µF (total value) which may be
incorporated in the control gear may be disconnected for this test.

– 16 – 60929 © IEC:2011
14 Operational tests for abnormal conditions
14.1 Removal of lamp(s)
During the operation of the control gear at rated voltage +10 % and in association with (an)
appropriate lamp(s), the lamp(s) shall be disconnected for 1 h from the control gear without
switching off the supply voltage. At the end of this period, the lamp(s) is (are) re
...

IEC 60929 ®
Edition 4.1 2015-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –
Performance requirements
Appareillages électroniques alimentés en courant alternatif et/ou continu pour
lampes tubulaires à fluorescence – Exigences de performances

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé Fax: [phone]
CH-1211 Geneva 20 [e-mail]
Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing more than 30 000 terms and
Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15
documents. Available for PC, Mac OS, Android Tablets and additional languages. Also known as the International
iPad. Electrotechnical Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in
variety of criteria (reference number, text, technical English and French extracted from the Terms and Definitions
committee,…). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries
and withdrawn publications. have been collected from earlier publications of IEC TC 37,

77, 86 and CISPR.
IEC Just Published - webstore.iec.ch/justpublished

Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Catalogue IEC - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
Application autonome pour consulter tous les renseignements
Le premier dictionnaire en ligne de termes électroniques et
bibliographiques sur les Normes internationales,
électriques. Il contient plus de 30 000 termes et définitions en
Spécifications techniques, Rapports techniques et autres
anglais et en français, ainsi que les termes équivalents dans
documents de l'IEC. Disponible pour PC, Mac OS, tablettes
15 langues additionnelles. Egalement appelé Vocabulaire
Android et iPad.
Electrotechnique International (IEV) en ligne.

Recherche de publications IEC - www.iec.ch/searchpub
Glossaire IEC - std.iec.ch/glossary
La recherche avancée permet de trouver des publications IEC Plus de 60 000 entrées terminologiques électrotechniques, en
en utilisant différents critères (numéro de référence, texte, anglais et en français, extraites des articles Termes et
comité d’études,…). Elle donne aussi des informations sur les Définitions des publications IEC parues depuis 2002. Plus
projets et les publications remplacées ou retirées. certaines entrées antérieures extraites des publications des

CE 37, 77, 86 et CISPR de l'IEC.
IEC Just Published - webstore.iec.ch/justpublished

Service Clients - webstore.iec.ch/csc
Restez informé sur les nouvelles publications IEC. Just
Published détaille les nouvelles publications parues. Si vous désirez nous donner des commentaires sur cette
Disponible en ligne et aussi une fois par mois par email. publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 60929 ®
Edition 4.1 2015-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –

Performance requirements
Appareillages électroniques alimentés en courant alternatif et/ou continu pour

lampes tubulaires à fluorescence – Exigences de performances

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.30 ISBN 978-2-8322-2972-9

IEC 60929 ®
Edition 4.1 2015-10
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
AC and/or DC-supplied electronic control gear for tubular fluorescent lamps –
Performance requirements
Appareillages électroniques alimentés en courant alternatif et/ou continu pour
lampes tubulaires à fluorescence – Exigences de performances

– 2 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General notes on tests . 9
5 Marking . 10
5.1 Mandatory marking . 10
5.2 Additional mandatory Information . 10
5.3 Non-mandatory information . 10
6 General statement . 11
7 Starting conditions . 11
7.1 General . 11
7.2 Conditions for control gear with preheating . 11
7.2.1 General . 11
7.2.2 Preheat energy . 11
7.2.3 Open-circuit voltage . 12
7.3 Conditions for control gear without preheating . 13
7.3.1 General . 13
7.3.2 Open-circuit voltage . 13
7.3.3 Control gear impedance test . 13
7.3.4 Cathode current . 13
7.4 Starting aid and distances . 14
8 Operating conditions . 14
8.1 Ballast lumen factor . 14
8.2 Total circuit power . 14
8.3 Requirements for dimming . 14
8.3.1 Heating of the lamp cathodes heating . 14
8.3.2 Control interfaces . 24
8.4 Current Limitation of the lamp current. 24
9 Circuit power factor . 24
10 Supply current . 24
11 Maximum current in any lead to a cathode . 25
12 Lamp operating current waveform . 25
13 Impedance at audio frequencies . 25
14 Operational tests for abnormal conditions . 25
14.1 Removal of lamp(s) . 25
14.2 Lamp fails to start . 26
14.3 Control gear behaviour close to end of lamp life . 26
15 Endurance . 26
15.1 General . 26
15.2 Temperature cycling . 26
15.3 Test at tc +10 K . 28

© IEC 2015
Annex A (normative) Tests . 32
Annex B (normative) Reference ballasts . 37
Annex C (normative) Conditions for reference lamps . 41
Annex D (informative) Explanation of starting conditions . 42
Annex E (normative) Control interface for controllable control gear . 46
Annex F (informative) Examples of suitable test set-ups for SoS and CV testing . 51
Annex G (informative) Example of a SoS-CV test with diagrammatic view . 55
Bibliography . 65

Figure 1 – Schematic illustration of the energy required for preheating and starting . 29
Figure 2 – Test circuits for non-preheat starting mode . 31
Figure 3 – Fundamental test set-up for the SoS-test . 15
Figure 4 – Fundamental test set-up for the CV-test . 16
Figure 5 – Example of temperature cycling described under 15.2 d) 2) . 27
Figure A.1 – Measurement of impedance at audio frequencies. 35
Figure A.2 – Test circuit for control gear for preheat starting mode . 36
Figure B.1 – HF reference circuit . 40
Figure E.1 – Functional specification for d.c. voltage control . 46
Figure E.2 – Connection diagram for several controllable control gear . 47
Figure E.3 – Circuit diagram with current sourcing . 47
Figure E.4 – Functional specification for PWM control . 48
Figure E.5 – PWM signal characteristics . 48
Figure E.6 – Connecting diagram for PWM controllable control gear . 49
Figure E.7 – Dimming curve for controllable control gear . 50
Figure F.1 – Lamp dummy for double-capped fluorescent lamps . 51
Figure F.2 – Typical test set-ups for electronic control gear operating double-capped
fluorescent lamps . 52
Figure F.3 – Typical test set-up for electronic control gear operating one or two single-
capped fluorescent lamps . 53
Figure F.4 – Typical test set-up for electronic control gear for connecting two lamps in
series . 54
Figure G.1 – Example of test circuit set-up reflecting the necessary measurements of
Table G.1 . 55

Table 1 – Control gear life time information . 10
Table 2 – Maximum permitted parasitic inductances, capacitances and contact
resistances of a test circuit set-up according to Figures 3 and 4 . 16
Table 3 – Dimming levels and measured values . 18
Table G.1 – List of necessary tests . 55

– 4 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________
AC and/or DC-SUPPLIED ELECTRONIC CONTROL GEAR
FOR TUBULAR FLUORESCENT LAMPS –
PERFORMANCE REQUIREMENTS
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, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the 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.
This consolidated version of the official IEC Standard and its amendment has been prepared
for user convenience.
IEC 60929 edition 4.1 contains the fourth edition (2011-05) [documents 34C/963/FDIS and
34C/976/RVD] and its amendment 1 (2015-10) [documents 34C/1114/CDV and 34C/1157/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red text.
A separate Final version with all changes accepted is available in this publication.

© IEC 2015
International Standard IEC 60929 has been prepared by subcommittee 34C: Auxiliaries for
lamps, of IEC technical committee 34: Lamps and related equipment.
This publication has been drafted in accordance with ISO/IEC Directives, Part 2.
NOTE In this standard, the following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Explanatory matter: in smaller roman type.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
The contents of the corrigendum of September 2011 have been included in this copy.

– 6 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
INTRODUCTION
This International Standard covers performance requirements for electronic control gear for
use on a.c., at 50 Hz or 60 Hz, and/or d.c. supplies up to 1 000 V with operating frequencies
deviating from the supply frequency, associated with tubular fluorescent lamps as specified in
IEC 60081 and IEC 60901, and other tubular fluorescent lamps for high frequency operation,
still to be standardised.
These control gear are intended to operate lamps at various frequencies including high
frequencies and at various lamp powers. Attention is drawn to the fact that operating
frequencies below 20 kHz may cause audio noise disturbance, whereas frequencies above
50 kHz may increase radio interference problems.
Some lamps may be specifically designed for high-frequency operation on high-frequency
control gear. Two starting modes, preheat and non-preheat, are described.
NOTE Lamps, only specified for preheat starting may be operated on other types of circuits. The control gear
manufacturer should provide test data which shows satisfactory starting and operation similar as the ones stated in
Clause 6.
In order to obtain satisfactory performance of fluorescent lamps and electronic control gears,
it is necessary that certain features of their design be properly co-ordinated. It is essential,
therefore, that specifications for them be written in terms of measurement made against some
common baseline of reference, permanent and reproducible.
These conditions may be fulfilled by reference ballasts. Moreover, the testing of control gear
for fluorescent lamps will, in general, be made with reference lamps and, in particular, by
comparing results obtained on such lamps with control gear to be tested and with reference
ballast.
Whereas the reference ballast for frequencies of 50 Hz or 60 Hz is a self-inductive coil, the
high-frequency reference ballast is a resistor because of its independence of frequency and
the lack of influence of parasitic capacitance.

© IEC 2015
AC and/or DC-SUPPLIED ELECTRONIC CONTROL GEAR
FOR TUBULAR FLUORESCENT LAMPS –
PERFORMANCE REQUIREMENTS
1 Scope
This international Standard specifies performance requirements for electronic control gear for
use on a.c. at 50 Hz or 60 Hz and/or d.c. supplies, both up to 1 000 V, with operating
frequencies deviating from the supply frequency, associated with fluorescent lamps as
specified in IEC 60081 and IEC 60901, and other fluorescent lamps for high-frequency
operation.
NOTE 1 Tests in this standard are type tests. Requirements for testing individual control gear during production
are not included.
NOTE 2 There are regional standards regarding the regulation of mains current harmonics and immunity for end-
products like luminaires and independent control gear. In a luminaire, the control gear is dominant in this respect.
Control gear, together with other components, should comply with these standards.
NOTE 3 Requirements for the digital addressable lighting interface of electronic control gear are given in
IEC 62386.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60081:1997, Double-capped fluorescent lamps – Performance specifications
Amendment 1(2000)
Amendment 2 (2003)
Amendment 3 (2005)
Amendment 4 (2010)
IEC 60901:1996, Single-capped fluorescent lamps – Performance specifications
Amendment 1(1997)
Amendment 2 (2000)
Amendment 3 (2004)
Amendment 4 (2007)
IEC 61347-1:2007, Lamp controlgear – Part 1: General and safety requirements
Amendment 1(2010)
IEC 61347-2-3:2000, Lamp controlgear – Part 2-3: Particular requirements for a.c. supplied
electronic ballasts for fluorescent lamps
Amendment 1(2004)
Amendment 2 (2006)
IEC 62386 (all parts), Digital addressable lighting
IEC TR 62750:2012, Unified fluorescent lamp dimming standard calculations
———————
There exists a consolidated edition 2.1 (2010) that comprises IEC 61347-1:2007 and its Amendment 1 (2010).

– 8 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
starting aid
a conductive strip affixed to the outer surface of a lamp, or a conductive plate which is spaced
within an appropriate distance from the lamp
A starting aid is usually connected to earth potential, and can only be effective when it has an
adequate potential difference from one end of the lamp.
3.2
ballast lumen factor
blf
ratio of the luminous flux of the lamp when the ballast under test is operated at its rated
voltage, to the luminous flux of the same lamp operated with the appropriate reference ballast
supplied at its rated voltage and frequency
3.3
reference ballast
special ballast, either inductive for lamps for operation on a.c. mains frequencies, or resistive
for lamps for operation on high frequency
It is designed for the purpose of providing comparison standards for use in testing ballasts, for
the selection of reference lamps and for testing regular production lamps under standardised
conditions. It is essentially characterised by the fact that, at its rated frequency, it has a stable
voltage/current ratio which is relatively uninfluenced by variations in current, temperature and
magnetic surroundings, as outlined in this standard.
[IEC 60050-845:1987, 845-08-36, modified]
3.4
reference lamp
lamp selected for testing control gear which, when associated with a reference ballast, has
electrical characteristics which are close to the nominal values as stated in the relevant lamp
standard
NOTE Specified conditions are given in Annex C.
3.5
total circuit power
total power dissipated by control gear and lamp in combination, at rated voltage and
frequency of the control gear
3.6
circuit power factor
λ
power factor of the combination of a control gear and the lamp or lamps for which the control
gear is designed
3.7
preheat starting
type of circuit in which the lamp electrodes are brought to emission temperature before the
lamp actually ignites
© IEC 2015
3.8
non-preheat starting
type of circuit which utilises a high open-circuit voltage causing secondary electron emission
from electrodes
3.9
electronic control gear life time
declared average life time at which 90 % of the electronic control gears are still operating
NOTE 1 In the context of life time, an electronic control gear is “operating” if it still fulfils it intended functions.
NOTE 2 The manufacturer apply suitable methods, e.g. statistical calculation and/or reliability testing.
3.10
ambient temperature
t
a
temperature range of the air surrounding the electronic control gear declared by the
manufacturer to indicate the normal operating temperature range for the electronic control
gear
NOTE 1 The lifetime of the electronic control gear is given at the ambient temperature ta; for ease of
measurement, also the corresponding temperature of the tc point is given.
NOTE 2 The measurement test condition for the ambient temperature assigned to the DUT should be in
accordance to Annex D of IEC 61347-1 at the rated voltage.
4 General notes on tests
4.1 Tests according to this standard are type tests.
NOTE The requirements and tolerances permitted by this standard are based on the testing of a type test sample
submitted by the manufacturer for that purpose. In principle this type test sample should consist of units having
characteristics typical of the manufacturer’s production and be as close to the production centre point values as
possible.
It may be expected with the tolerances given in this standard that products manufactured in accordance with the
type test sample will ensure compliance with the standard for the majority of the production. However, due to the
production spread, it is inevitable that there will sometimes be products outside the specified tolerances. For
guidance on sampling plans and procedures for inspection by attributes, see IEC 60410.
4.2 The tests are carried out in the order of the clauses, unless otherwise specified.
4.3 One control gear is submitted to all tests, unless otherwise stated.
4.4 In general, all tests are made on each type of control gear or where a power range of
similar control gear is involved, for each rated power in the range or on a representative
selection from the range as agreed with the manufacturer.
4.5 The tests are made under the conditions specified in Annex A. Lamp data sheets not
published in an IEC publication shall be made available by the lamp manufacturer.
4.6 All control gear specified in this standard shall comply with the requirements of
IEC 61347-2-3.
4.7 Attention is drawn to lamp performance standards which contain “information for
control gear design”; this should be followed for proper lamp operation; however, this
standard does not require the testing of lamp performance as part of the type test approval for
control gear.
– 10 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
5 Marking
5.1 Mandatory marking
Electronic control gear shall be clearly marked with the following mandatory marking as
applicable.
a) Circuit power factor, e.g. 0,85.
If the power factor is less than 0,95 capacitive, it shall be followed by the letter C, e.g.
0,85 C.
The following marking shall also be added, if appropriate:
b) The symbol Z which indicates that the control gear is designed to comply with the
conditions for audio-frequency impedance.
5.2 Additional mandatory Information
In addition to the above mandatory markings, the following information shall either be given
on the control gear or be made available in the manufacturer’s catalogue or the like.
a) a clear indication regarding the type of starting, viz. preheat or non-preheat;
b) indication whether a control gear needs a starting aid;
c) ballast lumen factor if different from 1 ± 0,05;
d) life time of the control gear is linked to the ambient temperature and the measured
temperature on the reference point tc.
For the information, the format of Table 1 has to be used. Corresponding to the fixed
ambient temperature values 40 °C, 50 °C and 60 °C, the values of the temperature
measured on the reference point tc and the declared life time have to be inserted by the
manufacturer. The value of the temperature of the tc point given in the table shall never
exceed the tc (IEC 61347-1), therefore, in that case, the column where the temperature of
tc-point exceeds tc will be left blank; but at least the column with ambient temperature
40 °C shall always be filled.
Table 1 – Control gear life time information
Ambient temperature 40 °C 50 °C 60 °C
Temperature measured on the a a a
XX XX XX
reference point tc
b b b
Life time XX XXX XX XXX XX XXX
a
”°C” values declared by the control gear manufacturer
b
”h” values declared by the control gear manufacturer

NOTE 1 Additional information from the control gear manufacturer to the ambient temperature and life time given
in Table 1 is allowed.
NOTE 2 For multi power control gear the most adverse load condition or a table for each lamp-control gear
combination should be given.
5.3 Non-mandatory information
Non-mandatory information which may be made available by the manufacturer:
a) rated output frequency at rated voltage, with and without lamp operating;
b) limits of the ambient temperature range within which the control gear will operate
satisfactorily at the declared voltage (range);
c) total circuit power.
© IEC 2015
6 General statement
It may be expected that control gear complying with this standard, when associated with
lamps which comply with IEC 60081 or IEC 60901 or other fluorescent lamps for high-
frequency operation, will provide satisfactory starting of the lamp at an air temperature
immediately around the lamp between 10 °C and 35 °C and operation between 10 °C and
50 °C at voltages within 92 % and 106 % of the rated voltage.
NOTE 1 The electrical characteristics as given on the lamp data sheets of IEC 60081 and IEC 60901, and
applying to operation on a reference control gear at rated voltage with a frequency of 50 Hz or 60 Hz, may deviate
when operating on a high frequency control gear and the conditions of item b) of 5.3 above.
NOTE 2 In some regions, there are laws on EMC for luminaires. The control gear is also contributing to this EMC
behaviour. See Bibliography for reference.
7 Starting conditions
7.1 General
Control gear shall start lamps without adversely affecting the performance of the lamp when
operated according to intended use. An explanation of the starting conditions is given in
Annex D.
Compliance is checked by the tests according to 7.2 to 7.4, as appropriate, with the control
gear operating at any supply voltage between 92 % and 106 % of its rated value.
7.2 Conditions for control gear with preheating
7.2.1 General
Control gear shall be tested according to the following requirements and in line with the
requirements of Clause A.3. The same requirements for preheating also apply to controllable
control gear at starting in any dimming position.
The lamp data sheet provides one substitution resistor R which is used with the control
sub(min)
gear in order to test its capability to produce the minimum energy according to the lamp data
sheet. If the control gear does not provide at least the minimum energy, it has failed. The
which
maximum energy line has to be tested with another substitution resistor R
sub(max)
corresponds to the upper energy. If the control gear generates too high energy, it has failed.
The value of the second resistor is also given on the lamp data sheet. In cases where no

value is given, preliminary values may be obtained from the lamp manufacturer.
7.2.2 Preheat energy
The control gear shall deliver at least the minimum total heating energy E at t according to
min 1
the time/energy limits on the relevant lamp data sheets (see Figure 1). Within the interval (t ,
t ) the total heating energy shall be between E and E according to the relevant lamp
2 min max
data sheet (see Figure 1).
The maximum heating energy shall not exceed the limits specified on the relevant lamp data
sheet at any time before t . This does not apply in the interval (t , t ), if t – t < 0,1 s.
2 1 2 2 1
The absolute minimum preheat time shall be 0,4 s unless otherwise specified on the relevant
lamp data sheet.
In order to prevent arcing, the voltage supplied to the substitution resistor should remain
below 11 V r.m.s., for E < E .
min
– 12 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
If a lamp data sheet does not give any energy data for preheating, and the preheat current
requirements are not applicable, the lamp manufacturer shall provide appropriate preheat
data.
Compliance with the requirements for the cathode preheat current can be tested as follows.
With a non-inductive substitution resistor of the value specified on the relevant lamp data
sheet, substituted for each lamp cathode, the control gear shall deliver a minimum and
maximum total heating current according to the time/current limits specified on the relevant
lamp data sheet. The minimum preheat current i is defined as
k
a
i = + i
k m
t
e
where
a is the constant (A s) for a specific cathode type;
i is the absolute minimum value of the effective heating current (A) to achieve emission, if
m
application time is of sufficiently long duration (e.g. ≥ 30 s from cold);
t is the time (s) to emission.
e
NOTE Emission time less than 0,4 s is normally not acceptable because experience has shown that satisfactory
cathode preheating is not always achievable in practice.
Values for a and i are given on the lamp data sheet.
m
Measurements are conducted with a non-inductive substitution resistor for testing cathode
preheat requirements of the value specified on the relevant lamp data sheet, substituted for
each lamp cathode, also in case of two or more lamps simultaneously operated.
7.2.3 Open-circuit voltage
During the preheat period, the open-circuit voltage between any pair of substitution resistors
shall not exceed the maximum value specified on the lamp data sheet, including the DC-offset
according to Clause E.4 of IEC 60081, and Clause D.3 of IEC 60901. After the preheat period,
it shall be, or rise to a value, not less than the minimum value equal to the ignition voltage as
specified on the lamp data sheet.
Where two or more lamps are operated in series or parallel circuits, each position is
measured in turn. The positions where not to measure are equipped with reference lamps, the
position where to measure is equipped with a pair of substitution resistors for testing open-
circuit voltage.
The open-circuit voltage is measured between the substitution resistors and shall comply in
all cases with the value specified on the relevant lamp data sheet for one lamp.
Measurement is made with an oscilloscope. Measurements are conducted with a non-
inductive substitution resistor for testing open-circuit voltages as specified on the relevant
lamp data sheet.
The control gear manufacturer provides on request the value of the cathode substitution
resistor within the specified range which results in the lowest open-circuit voltage for ignition.

© IEC 2015
7.3 Conditions for control gear without preheating
7.3.1 General
Control gear in accordance with definition 3.8 shall be so designed that the cumulated glow
discharge periods during starting do not exceed 100 ms when measured with a reference
lamp and without any earthed metal parts close by which might act as a starting aid. The glow
discharge period is deemed to have finished if the lamp current is at least 80 % of the rated
lamp current.
A control gear is deemed to conform with the above requirements when the following
conditions are fulfilled.
7.3.2 Open-circuit voltage
Measurement is made with an oscilloscope. With a non-inductive substitution resistor R of
C
the value specified on the relevant lamp data sheet, substituted for each lamp cathode (see
Figure 2a), the open-circuit voltage shall comply with the value specified on the relevant lamp
data sheet.
Where two or more lamps are operated in series or parallel, each position is measured in turn.
The positions where not to measure are equipped with reference lamps, the position where to
measure is equipped with a pair of cathode substitution resistors.
The open-circuit voltage is measured between the substitution resistors and shall comply in
all cases with the value specified on the relevant lamp data sheet for one lamp.
NOTE In the case of additional cathode heating during the starting process, lower values may be sufficient
provided the glow discharge period does not exceed 100 ms.
7.3.3 Control gear impedance test
With a non-inductive lamp substitution resistor R of the value specified on the relevant lamp
L
data sheet, substituted for the lamp and a non-inductive resistor R of the value specified on
C
the relevant lamp data sheet, substituted for each lamp cathode, (see Figure 2b), and at 92 %
of the rated voltage, the control gear shall deliver a current not less than the minimum value
specified on that data sheet.
7.3.4 Cathode current
Control gear of the non-preheat start type may supply some cathode heating during the
starting process. In Figure 2c, the cathode (heating) current is measured in M1 and M2 as the
lower current.
The cathode current, if any, shall not exceed the maximum value specified on the relevant
lamp data sheet.
The measurement is carried out with substitution resistors R (see Figure 2c), the value of
i
which is calculated as follows:
11V
R =
i
2,1x I
r
where I is the rated value of the lamp operating current.
r
This requirement does also apply to electronic control gear with output terminals for more
than one lamp. The positions where not to measure are equipped with reference lamps, the
position where to measure is equipped as shown in Figure 2c.

– 14 – IEC 60929:2011+AMD1:2015 CSV
© IEC 2015
7.4 Starting aid and distances
Lamps operated with electronic control gear complying with this standard may require a
starting aid as specified in IEC 60081 or 60901. The open-circuit voltage and voltage to
starting aid, during preheat and starting, shall be within the limits specified in the information
for control gear design on the relevant lamp data sheet.
8 Operating conditions
8.1 Ballast lumen factor
At rated voltage and ambient temperature of (25 ± 2) °C, the ballast lumen factor shall not be
less than 95 % of the value declared by the manufacturer or not less than 0,95 if not declared.
NOTE The luminous flux of a lamp is usually measured with an integrating photometer. For ratio measurements, a
suitable luxmeter is sufficient as there is close relationship between flux and luminous intensity at a fixed point.
If the declared lumen factor of the control gear is less than 0,9, evidence shall be given that
the performance of lamps operated on that control gear is not impaired.
The requirements of Subclause 8.3 shall be complied.
8.2 Total circuit power
At rated voltage, the total circuit power shall be not more than 110 % of the value declared by
the manufacturer, when the control gear is operated with (a) reference lamp(s).
8.3 Requirements for dimming
8.3.1 Heating of the lamp cathodes heating
When operating lamps at lower lumen levels than the optimum design point, care shall be
taken that the control gear provides cathode heating continuously to the lamp(s) so that the
lam
...