SIST EN 60923:2006

SLOVENSKI SIST EN 60923:2006

STANDARD
januar 2006
Pribor za sijalke – Dušilke za sijalke (razen cevastih fluorescenčnih sijalk) –
Zahteve glede tehničnih lastnosti (IEC 60923:2005)
(istoveten EN 60923:2005)
Auxiliaries for lamps – Ballasts for discharge lamps (excluding tubular fluorescent
lamps) – Performance requirements (IEC 60923:2005)
ICS 29.140.30 Referenčna številka
SIST EN 60923:2006(en)
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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EUROPEAN STANDARD EN 60923
NORME EUROPÉENNE
EUROPÄISCHE NORM November 2005

ICS 29.140.30 Supersedes EN 60923:1996 + A1:2001


English version


Auxiliaries for lamps –
Ballasts for discharge lamps (excluding tubular fluorescent lamps) -
Performance requirements
(IEC 60923:2005)


Appareillages de lampes –  Geräte für Lampen –
Ballasts pour lampes à décharge Vorschaltgeräte für Entladungslampen
(à l'exclusion des lampes tubulaires (ausgenommen röhrenförmige
à fluorescence) – Leuchtstofflampen) –
Exigences de performance Anforderungen an die Arbeitsweise
(CEI 60923:2005) (IEC 60923:2005)


This European Standard was approved by CENELEC on 2005-10-01. 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


© 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60923:2005 E

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EN 60923:2005 - 2 -
Foreword
The text of document 34C/688/FDIS, future edition 3 of IEC 60923, 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 60923 on 2005-10-01.
This European Standard supersedes EN 60923:1996 + A1:2001.
The purpose of publishing this new edition of EN 60923 was to remove EMC related requirements
which are deemed to be of a regional nature. At the same time, references to quoted standards were
updated.
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) 2006-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-10-01
This standard is to be read in conjunction with EN 61347-2-9, Lamp controlgear – Part 2-9: Particular
requirements for ballasts for discharge lamps (excluding fluorescent lamps) together with EN 61347-1,
Lamp controlgear – Part 1: General and safety requirements.
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.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60923:2005 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60921 NOTE Harmonized as EN 60921:2004 (not modified).
IEC 61000-3-2 NOTE Harmonized as EN 61000-3-2:2000 (modified).
IEC 61547 NOTE Harmonized as EN 61547:1995 (not modified).
__________

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- 3 - EN 60923:2005
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 60188 - High-pressure mercury vapour lamps - EN 60188 2001
Performance specifications

1) 2)
IEC 60192 - Low pressure sodium vapour lamps - EN 60192 2001
Performance specifications

1) 2)
IEC 60662 - High-pressure sodium vapour lamps EN 60662 1993

1) 2)
IEC 61167 - Metal halide lamps EN 61167 1994

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

1) 2)
IEC 61347-2-1 - Part 2-1: Particular requirements for EN 61347-2-1 2001
starting devices (other than glow starters) + corr. July 2003

1) 2)
IEC 61347-2-9 - Part 2-9: Particular requirements for EN 61347-2-9 2001
ballasts for discharge lamps (excluding + corr. July 2003
fluorescent lamps)




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

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NORME CEI
INTERNATIONALE
IEC



60923
INTERNATIONAL


Edition 3.1
STANDARD


2006-09


Edition 3:2005 consolidée par l'amendement 1:2006
Edition 3:2005 consolidated with amendment 1:2006
Appareillages de lampes –
Ballasts pour lampes à décharge
(à l'exclusion des lampes tubulaires
à fluorescence) – Exigences de performance

Auxiliaries for lamps –
Ballasts for discharge lamps
(excluding tubular fluorescent lamps) –
Performance requirements

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Pour prix, voir catalogue en vigueur
For price, see current catalogue

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60923  IEC:2005+A1:2006 – 3 –
CONTENTS
FOREWORD.7
INTRODUCTION.11

1 Scope.13
2 Normative references .13
3 Terms and definitions .13
4 General notes on tests .15
5 Marking .15
6 Ballasts designed to operate at various supply voltages .15
7 Circuit power-factor .15
8 Supply current .17
9 Current waveform .17
9.1 Lamp operating current waveform .17
9.2 Test procedure .17
10 Magnetic screening .19
11 Ignitors .19
12 Electrical requirements for ballasts for high-pressure mercury vapour lamps .19
12.1 Ballast setting .19
12.2 Short-circuit current.21
12.3 Open-circuit voltage (minimum voltage for stable operation).21
13 Electrical requirements for ballasts for low-pressure sodium vapour lamps .23
13.1 Ballast setting .23
13.2 Short-circuit current and run-up conditions .23
13.3 Open-circuit voltage (minimum voltage for stable operation).25
14 Electrical requirements for ballasts for metal halide lamps.25
14.1 Ballast setting .25
14.2 Short-circuit current and run-up conditions .25
14.3 Open-circuit voltage (minimum voltage for stable operation).27
15 Electrical requirements for ballasts for high-pressure sodium vapour lamps.29
15.1 Ballast setting .29
15.2 Short-circuit current.29
15.3 Open-circuit voltage .31

Annex A (normative) Reference ballasts .33
Annex B (normative) Reference lamps .39
Annex C (normative) General requirements for tests.43
Annex D (normative) Explanation of measurements of ballast setting and lamp-
operating current waveform for high-pressure sodium vapour lamps .47
Annex E (informative) Interpretations.51

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60923  IEC:2005+A1:2006 – 5 –

Figure 1 – Measurement of current waveform .19
Figure 2 – Circuit for testing ballasts for high-pressure mercury vapour and low-
pressure sodium vapour lamps .21
Figure 3 – Lamp inrush-current test circuit .27
Figure A.1 – Recommended circuit for the measurement of voltage/current ratio of the
reference ballast .35
Figure A.2 – Recommended circuit for the determination of power-factor of the
reference ballast .35
Figure B.1 – Recommended circuit for the selection of reference lamps.41
Figure D.1 – HPS ballast setting compliance characteristics for a lamp operated from
a reference ballast and from a test ballast .49

Table 1 – Lamp operating current waveform, maximum ratio of peak value to r.m.s. .17
Table 2 – Test current.25
Table 3 – Short-circuit current ratio.31

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60923 © IEC:2005+A1:2006 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

AUXILIARIES FOR LAMPS –
BALLASTS FOR DISCHARGE LAMPS
(EXCLUDING 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 60923 has been prepared by subcommittee 34C: Auxiliaries for
lamps, of IEC technical committee 34: Lamps and related equipment.
This consolidated version of IEC 60923 consists of the third edition (2005) [documents
34C/688/FDIS and 34C/694/RVD] and its amendment 1 (2006) [documents 34C/749/FDIS and
34C/758/RVD].
The technical content is therefore identical to the base edition and its amendment and has
been prepared for user convenience.
It bears the edition number 3.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
The purpose of publishing the third edition of IEC 60923 was to remove EMC related
requirements which are deemed to be of a regional nature. At the same time, references to
quoted standards were updated.

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60923  IEC:2005+A1:2006 – 9 –
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This standard is to be read in conjunction with IEC 61347-2-9, Lamp controlgear – Part 2-9:
Particular requirements for ballasts for discharge lamps (excluding fluorescent lamps)
together with IEC 61347-1, Lamp controlgear – Part 1: General and safety requirements.
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 amendments will
remain unchanged until the maintenance result 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.

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60923  IEC:2005+A1:2006 – 11 –
INTRODUCTION
This standard covers performance requirements for ballasts for discharge lamps.
In order to obtain satisfactory performance of discharge lamps and their associated ballasts, it
is necessary that certain features of their design be properly coordinated. Therefore, it is
essential that specifications for them be written in terms of measurements made against some
common baseline of reference, which should be permanent and reproducible.
These conditions may be fulfilled by special or selected inductive-type ballasts, called
"reference ballasts". These ballasts may be used for testing ordinary ballasts and for the
selection of reference lamps.
Moreover, the testing of ballasts requires a clear definition of testing methods. This testing
will, in general, be made with reference lamps and, in particular, by comparing results
obtained on such lamps with these ballasts and with the reference ballast.
Because of the special characteristics of discharge lamps, two ranges of supply voltage
variation had to be considered. Whenever safety is involved, the classical range of variation
from 90 % to 110 % of the rated supply voltage is retained, but for certain clauses where only
operational conditions are concerned a smaller range from 92 % to 106 % of the rated value
has been considered.

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60923  IEC:2005+A1:2006 – 13 –
AUXILIARIES FOR LAMPS –
BALLASTS FOR DISCHARGE LAMPS
(EXCLUDING TUBULAR FLUORESCENT LAMPS) –
PERFORMANCE REQUIREMENTS


1 Scope
This International Standard specifies performance requirements for ballasts for discharge
lamps such as high-pressure mercury vapour, low-pressure sodium vapour, high-pressure
sodium vapour and metal halide lamps. Clauses 12 through 15 each detail specific
requirements for a particular type of ballast. This standard covers inductive type ballasts for
use on a.c. supplies up to 1 000 V at 50 Hz to 60 Hz associated with discharge lamps, having
rated wattage, dimensions and characteristics as specified in the relevant IEC lamp
standards.
NOTE 1 For certain types of discharge lamps an ignitor is required.
NOTE 2 Extension of the standard to cover ballasts incorporating, or for use with, series capacitors is under
consideration.
NOTE 3 The performance requirements of ballasts for tubular fluorescent lamps are covered by IEC 60921.
NOTE 4 There are regional standards regarding the regulation of mains current harmonics for end-products such
as 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 60188, High-pressure mercury vapour lamps – Performance specifications
IEC 60192, Low pressure sodium vapour lamps – Performance specifications
IEC 60662, High-pressure sodium vapour lamps
IEC 61167, Metal halide lamps
IEC 61347-1, Lamp controlgear – Part 1: General and safety requirements
IEC 61347-2-1, Lamp controlgear – Part 2-1: Particular requirements for starting devices
(other than glow starters)
IEC 61347-2-9, Lamp controlgear – Part 2-9: Particular requirements for ballasts for discharge
lamps (excluding fluorescent lamps)
3 Terms and definitions
The terms and definitions given in IEC 61347-2-9 and IEC 61347-1 apply.

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60923  IEC:2005+A1:2006 – 15 –
4 General notes on tests
Tests according to this specification are type tests.
NOTE The requirements and tolerances permitted by this standard are based on 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 the standard that products manufactured in accordance
with the type test sample will comply with the standard for the majority of the production. Due to the production
spread, however, it is inevitable that there will sometimes be ballasts outside the specified tolerances. For
guidance of sampling plans and procedures for inspection by attributes, see IEC 60410.
The tests are carried out in the order of the clauses, unless otherwise specified.
One sample is submitted to all tests.
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 a representative selection from the range, as
agreed with the manufacturer.
Reference ballasts and reference lamps shall be in accordance with Annexes A and B.
The tests are made under the conditions specified in Annex C.
All ballasts specified in this standard shall meet the requirements of IEC 61347-2-9 and
IEC 61347-1.
Attention is drawn to lamp performance standards which contain “information for ballast
design”. This information 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
ballasts.
5 Marking
The following additional marking is included, if appropriate:
Circuit power-factor, e.g. λ 0,85.
6 Ballasts designed to operate at various supply voltages
If a ballast is rated for more than one value of supply voltage, it shall comply with the relevant
clauses of this specification at all voltages for which it is marked. In case of a ballast with
taps, it is tested using the appropriate tappings.
7 Circuit power-factor
The measured circuit power-factor shall not differ from the marked value by more than 0,05
when the ballast is operated with one or more appropriate lamp(s) and the whole combination
is supplied at its rated voltage and frequency.

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60923  IEC:2005+A1:2006 – 17 –
In cases where a minimum value of the power-factor is required for a high power-factor
ballast, it shall be 0,85 measured under the conditions stated above. For these high power-
factor ballasts, the measured value shall in no case be less than 0,85.
NOTE The United States of America requires a power-factor of at least 0,9 for high power-factor ballasts.
8 Supply current
At rated voltage, the supply current shall not differ by more than 10 % from the value marked
on the ballast when the latter is operated with a reference lamp.
9 Current waveform
9.1 Lamp operating current waveform
The maximum ratio of peak value to root-mean-square (r.m.s.) value shall not exceed the
values in Table 1 when the ballast associated with a reference lamp is operated at its rated
voltage.
Table 1 – Lamp operating current waveform,
maximum ratio of peak value to r.m.s.
Lamp type Maximum ratio of peak value
to r.m.s.
High-pressure mercury 1,9
a
Low-pressure sodium 1,6
Metal halide Under consideration
High-pressure sodium 1,8
a
Deviating from this table, for ignitor circuits for low-pressure sodium lamps, the
maximum ratio of peak value to r.m.s. value of the lamp operating current shall not
exceed 2,0 for a short duration, e.g. <0,20 ms, and 1,8 for a longer duration.
9.2 Test procedure
The peak value of the lamp current shall be determined by means of a calibrated cathode-ray
oscilloscope, the resistor R being inserted in the earthed side of the circuit (see Figure 1).
1
This resistor shall have a sufficiently low value such that the voltage drop shall not exceed
0,5 % of the nominal lamp voltage.
The oscilloscope is connected with its earth connection on the supply side.
Care is taken to ensure a sufficiently low impedance of the supply for the different frequencies
involved. Moreover, the supply voltage distortion of maximum 3 % (see item c) of Clause C.2)
shall be taken into account when evaluating test results. In case of doubt a distortion-free
supply is used.

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60923  IEC:2005+A1:2006 – 19 –


1 2
Supply
R
1
C.R.O.
IEC  1324/05

1 = Ballast under test
2 = Reference lamp
Figure 1 – Measurement of current waveform
10 Magnetic screening
The ballast shall be effectively screened against the influence of adjacent ferro-magnetic
materials.
Compliance is checked by the following test.
The ballast is operated at rated voltage with an appropriate lamp. After stabilization, a steel
plate 1 mm thick and of length and breadth greater than those of the ballast under test shall
be successively moved into proximity and held at a spacing of 5 mm to each face of the
latter. During this operation, the lamp current is measured and this shall not change by
more than 2 % due to the presence of the steel plate.
11 Ignitors
Ignitors shall conform to the requirements of IEC 61347-2-1.
12 Electrical requirements for ballasts for high-pressure mercury vapour lamps
12.1 Ballast setting
The ballast shall limit the power and current delivered to a reference lamp to not less than
92,5 % for the power and not more than 115 % for the current of the corresponding values
delivered to the same lamp when operated with a reference ballast. Both the reference ballast
and the ballast under test shall have the same rated frequency and each shall be operated at
its rated voltage.
Moreover, for any other supply voltage between 92 % and 106 % of its rated value, the power
delivered by the ballast to the reference lamp shall lie between the limit of 88 % of the power
delivered to the same lamp by the reference ballast when supplied at 92 % of its rated voltage
and the limit of 109 % of the power delivered to the lamp by the reference ballast when
supplied at 106 % of its rated voltage.

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60923  IEC:2005+A1:2006 – 21 –
The tests are carried out with a circuit shown in Figure 2, switch S in the up position and
2
switch S successively operating the lamp from the reference ballast and the ballast under
1
test.

V 1
Supply
S
1
2
Supply
V
S
2
W A
3
V
IEC  1325/05

Key
1 = ballast under test
2 = reference ballast
3 = reference lamp
When measuring lamp wattage, no correction shall be made for the wattmeter consumption.
Instruments not in use are to be short-circuited or switched off. A method for securing rapid
switching of the lamp from one ballast to the other is under consideration.
Figure 2 – Circuit for testing ballasts for high-pressure mercury vapour
and low-pressure sodium vapour lamps

12.2 Short-circuit current
When the ballast is supplied at any voltage between 92 % and 106 % of its rated voltage, the
s
...