A.C. supplied electronic ballasts for tubular fluorescent lamps - Performance requirements

This International Standard specifies performance requirements for electronic ballasts for use on a.c. supplies up to 1 000 V at 50 Hz or 60 Hz with operating frequencies deviating from the supply frequency, associated with tubular fluorescent lamps as specified in EN 60081 and EN 60901 and other tubular fluorescent lamps for high frequency operation.

Wechselstromversorgte elektronische Vorschaltgeräte für röhrenförmige Leuchtstofflampen - Anforderungen an die Arbeitsweise

Ballasts électroniques alimentés en courant alternatif pour lampes tubulaires à fluorescence - Prescriptions de performances

La présente Norme internationale spécifie les prescriptions de performances pour les ballasts électroniques alimentés en courant alternatif jusqu'à 1 000 V à 50 Hz ou 60 Hz, avec des fréquences de travail s'écartant de la fréquence d'alimentation, et utilisés en association avec des lampes tubulaires à fluorescence comme celles indiquées dans la EN 60081 et la EN 60901, ou avec d'autres types de lampes à fluorescence pour fonctionnement à haute fréquence.

Izmenično napajane elektronske predstikalne naprave za cevaste fluorescentne svetilke – Zahteve za lastnosti (IEC 60929:2003)

General Information

Status
Withdrawn
Publication Date
31-Aug-2004
Withdrawal Date
30-Sep-2006
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
01-Oct-2006
Due Date
01-Oct-2006
Completion Date
01-Oct-2006

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EUROPEAN STANDARD EN 60929
NORME EUROPÉENNE
EUROPÄISCHE NORM March 2004

ICS 29.140.30 Supersedes EN 60929:1992 + A1:1995 + A2:1996


English version


A.C. supplied electronic ballasts for tubular fluorescent lamps -
Performance requirements
(IEC 60929:2003)


Ballasts électroniques alimentés  Wechselstromversorgte elektronische
en courant alternatif pour lampes Vorschaltgeräte für röhrenförmige
tubulaires à fluorescence - Leuchtstofflampen -
Prescriptions de performances Anforderungen an die Arbeitsweise
(CEI 60929:2003) (IEC 60929:2003)






This European Standard was approved by CENELEC on 2004-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60929:2004 E

---------------------- Page: 1 ----------------------

EN 60929:2004 - 2 -
Foreword
The text of document 34C/618/FDIS, future edition 2 of IEC 60929, prepared by SC 34C, Auxiliaries
for lamps, of IEC TC 34, Lamps and related equipment, was submitted to the IEC-CENELEC parallel
vote and was approved by CENELEC as EN 60929 on 2004-03-01.

This European Standard Supersedes EN 60929:1992 + A1:1995 + A2:1996.

In this new edition digital signal control of electronic ballasts has been introduced.

The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-12-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2007-03-01


Annex ZA has been added by CENELEC.
__________

Endorsement notice

The text of the International Standard IEC 60929:2003 was approved by CENELEC as a European
Standard without any modification.
__________

---------------------- Page: 2 ----------------------

- 3 - EN 60929:2004
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
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.
NOTE Where an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 60081 - Double-capped fluorescent lamps - EN 60081 1998
Performance specifications

1)
IEC 60410 - Sampling plans and procedures for - -
inspection by attributes

1)
3)
IEC 60669-2-1 - Switches for household and similar fixed EN 60669-2-1 -
(mod) electrical installations
Part 2-1: Particular requirements -
Electronic switches

1) 2)
IEC 60901 - Single-capped fluorescent lamps - EN 60901 1996
Performance specifications

IEC 61000-3-2 2000 Electromagnetic compatibility (EMC) EN 61000-3-2 2000
(mod) Part 3-2: Limits - Limits for harmonic
current emissions (equipment input
current up to and including 16 A per
phase)
A1 2001 - -

1) 2)
IEC 61347-1 - Lamp controlgear EN 61347-1 2001
Part 1: General and safety requirements + corr. July 2003

1) 2)
IEC 61347-2-3 - Part 2-3: Particular requirements for a.c. EN 61347-2-3 2001
supplied electronic ballasts for + corr. July 2003
fluorescent lamps

1) 2)
IEC 61547 - Equipment for general lighting purposes - EN 61547 1995
EMC immunity requirements



1)
Undated reference.
2)
Valid edition at date of issue.
3)
In preparation.

---------------------- Page: 3 ----------------------

NORME CEI
INTERNATIONALE IEC
60929
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2003-12
Ballasts électroniques alimentés en courant
alternatif pour lampes tubulaires à fluorescence –
Prescriptions de performances
AC-supplied electronic ballasts for tubular
fluorescent lamps –
Performance requirements
© IEC 2003 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
y compris la photocopie et les photocopying and microfilm, without permission in writing from
électronique ou mécanique,
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
XG
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
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Pour prix, voir catalogue en vigueur
For price, see current catalogue

---------------------- Page: 4 ----------------------

60929 © IEC:2003 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11
1 Scope.13
2 Normative references .13
3 Terms and definitions .13
4 General notes on tests .17
5 Marking .17
6 General statement .19
7 Starting conditions.19
8 Operating conditions.25
9 Circuit power factor .25
10 Supply current .27
11 Maximum current in any lead to a cathode.27
12 Current waveform .27
13 Magnetic screening .29
14 Impedance at audio frequencies .29
15 Mains transient overvoltages .29
16 Operational tests for abnormal conditions.31
17 Endurance.31
Annex A (normative)  Tests.47
Annex B (normative) Reference ballasts .57
Annex C (normative) Reference lamps.63
Annex D (informative)  Explanation of starting conditions.65
Annex E (normative) Control interface for controllable ballasts .75
Annex F (informative)  A guide to quoting product life and failure rate.137
Annex G (informative) Test procedures for ballasts with digital control interface
according to Clause E.4.139
Figure 1 – Interpretation of effective heating current .35
Figure 2 – Open-circuit voltage requirements for ballasts with current-controlled
preheating .37
Figure 3 – Test circuit for non-preheat starting mode .39
Figure 4 – Measurement of current waveform .41
Figure 5 – Measurement of impedance at audio frequencies.43
Figure 6 – Test circuit for ballasts for current-controlled preheat starting mode.43
Figure 7 – HF reference circuit.45
Figure 8 – Cathode heating current requirements for current-controlled ballasts .45

---------------------- Page: 5 ----------------------

60929 © IEC:2003 – 5 –
Figure E.1 – Replacement diagram at ballast’s control terminals.85
Figure E.2 – Required timing at the ballast terminals of the digital interface.89
Figure E.3 – Voltage and current levels for forward and backward channeling at the
ballast's digital interface terminals .91
Figure E.4 – Example of command repetition time .95
Table A.1 – Test transient overvoltages .53

---------------------- Page: 6 ----------------------

60929 © IEC:2003 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AC-SUPPLIED ELECTRONIC BALLASTS
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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment
declared to be in conformity with an IEC Publication.
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 second edition cancels and replaces the first edition published in 1990, Amendment 1
(1994) and Amendment 2 (1996). This second edition constitutes a technical revision.
In this new edition digital signal control of electronic ballasts has been introduced.

---------------------- Page: 7 ----------------------

60929 © IEC:2003 – 9 –
The text of this standard is based on the following documents:
FDIS Report on voting
34C/618/FDIS 34C/622/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
2005. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

---------------------- Page: 8 ----------------------

60929 © IEC:2003 – 11 –
INTRODUCTION
This International Standard covers performance requirements for electronic ballasts for use on
a.c. supplies up to 1 000 V at 50 Hz or 60 Hz 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
standardized.
These ballasts 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
ballasts. Two starting modes, preheat and non-preheat, are described.
NOTE The possibility exists for operation of lamps designed for preheat starting on circuits of the non-preheat type.
Lamps specified for operation on both types of circuits may appear in IEC 60081, or lamp manufacturers can authorize
such operation of their lamps.
In order to obtain satisfactory performance of fluorescent lamps and electronic ballasts, it is
necessary that certain features of their design be properly coordinated. It is essential, therefore,
that specifications for them be written in terms of measurement made against some common
baseline of reference, which must be reasonable, permanent and reproducible.
These conditions may be fulfilled by reference ballasts. Moreover, the testing of ballasts for
fluorescent lamps will, in general, be made with reference lamps and, in particular, by comparing
results obtained on such lamps with ballasts to be tested and with a 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 independency of frequency and the lack
of influence of parasitic capacitance.

---------------------- Page: 9 ----------------------

60929 © IEC:2003 – 13 –
AC-SUPPLIED ELECTRONIC BALLASTS
FOR TUBULAR FLUORESCENT LAMPS –
PERFORMANCE REQUIREMENTS
1 Scope
This International Standard specifies performance requirements for electronic ballasts for use on
a.c. supplies up to 1 000 V at 50 Hz or 60 Hz 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.
NOTE Tests in this standard are type tests. Requirements for testing individual ballasts during production are not
included.
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, Double-capped fluorescent lamps − Performance specifications
IEC 60410:, Sampling plans and procedures for inspection by attributes
IEC 60669-2-1, Switches for household and similar fixed electrical installations – Part 2-1:
Particular requirements – Electronic switches
IEC 60901, Single-capped fluorescent lamps − Performance specifications
IEC 61000-3-2:2000, Electromagnetic compatibility (EMC) − Part 3-2: Limits − Limits for
harmonic current emissions (equipment input current <= 16A per phase)
Amendment 1 (2001)
IEC 61347-1, Lamp controlgear − Part 1: General and safety requirements
IEC 61347-2-3, Lamp controlgear − Part 2-3: Particular requirements for a.c. supplied electronic
ballasts for fluorescent lamps
IEC 61547, Equipment for general lighting purposes – EMC immunity requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply:
3.1
starting aid
aid that can be either a conductive stripe affixed to the outer surface of a lamp, or a conductive
plate which is spaced within an appropriate distance from a lamp.
NOTE A starting aid can only be effective when it has an adequate potential difference from one end of the lamp.

---------------------- Page: 10 ----------------------

60929 © IEC:2003 – 15 –
3.2
ballast lumen factor
ratio of the light output of the lamp when the ballast under test is operated at its rated voltage,
compared with the light output of the same lamp operated with the appropriate reference ballast
supplied at its rated voltage and frequency
3.3
reference ballast
special ballast designed for the purpose of providing comparison standards for testing ballasts
and for selecting reference lamps
NOTE It is essentially characterized 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.
3.4
reference lamp
lamp selected for testing ballasts which, when associated with a reference ballast under
specified conditions, has electrical characteristics which are close to the nominal values as
stated in the relevant lamp standard for that particular type of lamp
3.5
calibration current of a reference ballast
value of the current on which are based the calibration and functioning of the ballast
3.6
total circuit power
total power dissipated by ballast and lamp in combination, at rated voltage and frequency of the
ballast
3.7
circuit power factor
λλ
λλ
power factor of the combination of a ballast and the lamp or lamps for which the ballast is
designed
3.8
high power factor ballast
ballast having a circuit power factor of at least 0,85
NOTE 1 The value of power factor takes into account the effect of the distortion of the current waveform.
NOTE 2  For North America, high power factor is defined as a power factor of at least 0,9.
3.9
high audio-frequency impedance ballast
ballast of which the impedance in the frequency range 250 Hz to 2 000 Hz exceeds the values
specified in Clause 14 of this standard
3.10
low-distortion type ballast
ballast of which the harmonic content complies with the more severe requirements of 12.1 of this
standard
3.11
preheat starting
type of circuit in which the lamp electrodes are brought to emission temperature before the lamp
actually ignites

---------------------- Page: 11 ----------------------

60929 © IEC:2003 – 17 –
3.12
non-preheat starting
type of circuit which utilizes a high open-circuit voltage causing field emission from electrodes
3.13
pre-start time
for ballasts according to 3.12, period after switching on the supply voltage during which the lamp
current is ≤10 mA
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 ballast is submitted to all tests.
4.4 In general, all tests are made on each type of ballast or where a range of similar ballasts is
involved for each rated wattage 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 ballasts specified in this standard shall comply with the requirements of IEC 61347-1
and IEC 61347-2-3.
5 Marking
5.1 Ballasts shall be clearly marked with the following mandatory marking:
a) Circuit power factor, for example 0,85.
If the power factor is less than 0,95 leading, it shall be followed by the letter C, for example
0,85 C.
The following markings shall also be added, if appropriate:
b) The symbol Z≈ which indicates that the ballast is designed to comply with the conditions for
audio-frequency impedance.
c) The symbol H which indicates that the ballast is not of the low distortion type.
5.2 In addition to the above mandatory markings, the following information shall either be given
on the ballast or be made available in the manufacturer's catalogue or the like:

---------------------- Page: 12 ----------------------

60929 © IEC:2003 – 19 –
a) a clear indication regarding the type of starting, viz. preheat or non-preheat;
b) indication whether a ballast needs a starting aid.
5.3 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 ballast will operate satisfactorily at
the declared voltage (range);
c) ballast lumen factor and total circuit power in combination.
6 General statement
It may be expected that ballasts 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 The electrical characteristics as given on the lamp data sheets of IEC 60081 and IEC 60901, and applying to
operation on a reference ballast at rated voltage with a frequency of 50 Hz or 60 Hz, may deviate when operating on a
high frequency ballast and the conditions of item b) of 5.3 above.
7 Starting conditions
Ballasts 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 7.1 to 7.4, as appropriate, with the ballast
operating at any supply voltage between 92 % and 106 % of its rated value.
NOTE Preheat current or voltage requirements also apply to controllable ballasts in any dimming position.
7.1 Ballasts for current-controlled preheat starting mode
For ballasts of this category, the following requirements apply. The tests shall be carried out in
accordance with the requirements of Clause A.4.
7.1.1 With a non-inductive substitution resistor of the value specified on the relevant lamp data
sheet, substituted for each lamp cathode, the ballast shall deliver a minimum total effective
heating current according to the time/current limits specified on the relevant lamp data sheets
(see Figure 1).
The absolute minimum preheat time shall be at least 0,4 s, unless otherwise specified on the
relevant lamp data sheet.
The maximum effective heating current shall not exceed the limits specified on the relevant lamp
data sheet at any time t.

---------------------- Page: 13 ----------------------

60929 © IEC:2003 – 21 –
7.1.2 The open-circuit voltage between any pair of substitution resistors representing a lamp
shall not exceed the maximum values specified on the lamp data sheets, during the preheat
period. After the preheat period it shall be, or rise to a value, not less than the minimum value for
lamp starting, as specified on the lamp data sheet.
If the current through the substitution resistor, as specified in 7.1.1, is interrupted before the
minimum specified voltage for lamp starting has been reached, the voltage rise to minimum
starting voltage shall take place within not more than 0,1 s (see Figure 2a).
If the voltage rise takes more than 0,1 s, the current through the substitution resistor shall not fall
below the absolute minimum value specified (see Figure 2b).
The crest factor of the open-circuit voltage shall not exceed 1,8. Even very narrow voltage peaks
which do not influence the r.m.s. value shall not occur during the minimum preheat period.
7.2 Ballasts for voltage-controlled preheat starting mode
Ballasts of this type shall provide proper cathode preheating voltage, cathode operating voltage,
and lamp starting voltage. Limiting values and appropriate substitution resistors are specified on
the relevant lamp data sheets in IEC 60081 and IEC 60901.
Lamps with either low resistance cathodes or high resistance cathodes may be operated by this
method.
7.2.1 Ballasts shall deliver r.m.s. cathode heating voltage, within the limits specified on the
relevant lamp data sheet, to the specified substitution resistors, when rated supply voltage is
applied.
It is permitted to exceed the maximum cathode voltage limit provided the maximum cathode
current is in accordance with the requirements for current-controlled preheating.
The minimum application time of the cathode heating voltage shall be 0,4 s.
Dependent upon lamp data sheet requirements, the cathode heating voltage after 0,4 s may be:
a) applied continuously during operation;
b) reduced to a lower level;
c) reduced to zero.
7.2.2 Ballasts shall provide the lamp starting voltages specified on the relevant lamp data sheet
for:
a) r.m.s. voltage across the lamp, and
b) peak voltage to starting aid, if required.
Starting requirements for various series circuits may be specified. For operation of lamps in
parallel circuits, the relevant single lamp requirement shall be provided for each lamp.

---------------------- Page: 14 ----------------------

60929 © IEC:2003 – 23 –
The starting voltages may be available simultaneously with the cathode preheating voltage or
they may be elevated to those levels after 0,4 s elapsed time. Any voltage applied before 0,4 s
shall be lower than the level that would cause starting of the lamp or shall be in accordance
...

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