SIST EN 60400:2018

SLOVENSKI STANDARD
01-november-2018
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SIST EN 60400:2008
SIST EN 60400:2008/A1:2011
SIST EN 60400:2008/A2:2015
2NRYL]DFHYDVWHIOXRUHVFHQþQHVLMDONHLQVWDUWHUVNLRNRYL,(&
Lampholders for tubular fluorescent lamps and starterholders (IEC 60400:2017)
Lampenfassungen für röhrenförmige Leuchtstofflampen und Starterfassungen (IEC
60400:2017)
Douilles pour lampes tubulaires à fluorescence et douilles pour starters (IEC
60400:2017)
Ta slovenski standard je istoveten z: EN 60400:2017
ICS:
29.140.10 Grla in držala žarnic Lamp caps and holders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60400
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2017
ICS 29.140.10 Supersedes EN 60400:2008
English Version
Lampholders for tubular fluorescent lamps and starterholders
(IEC 60400:2017)
Douilles pour lampes tubulaires à fluorescence et douilles Lampenfassungen für röhrenförmige Leuchtstofflampen und
pour starters Starterfassungen
(IEC 60400:2017) (IEC 60400:2017)
This European Standard was approved by CENELEC on 2017-07-20. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60400:2017 E
European foreword
The text of document 34B/1900/FDIS, future edition 8 of IEC 60400, prepared by SC 34B “Lamp caps
and holders” of IEC/TC 34 “Lamps and related equipment” was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN 60400:2017.

The following dates are fixed:
(dop) 2018-04-20
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-07-20
standards conflicting with the
document have to be withdrawn
This document supersedes EN 60400:2008.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this
document.
Endorsement notice
The text of the International Standard IEC 60400:2017 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 60061-1 NOTE Harmonized as EN 60061-1.
IEC 60061-4 NOTE Harmonized as EN 60061-4.
IEC 60068-2-20:2008 NOTE Harmonized as EN 60068-2-20:2008.
IEC 60238 NOTE Harmonized as EN 60238.
IEC 60664-1:2007 NOTE Harmonized as EN 60664-1:2007.
IEC 60664-4:2005 NOTE Harmonized as EN 60664-4:2005.
IEC 61199 NOTE Harmonized as EN 61199.
IEC 60838-1:2016 NOTE Harmonized as EN 60838-1:2017.
IEC 60838-1:2016/AMD1:2017 NOTE Harmonized as EN 60838-1:2017/A1:2017.

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60061-2 -  Lamp caps and holders together with - -
gauges for the control of interchangeability
and safety -- Part 2: Lampholders
IEC 60061-3 -  Lamp caps and holders together with EN 60061-3 -
gauges for the control of interchangeability
and safety -- Part 3: Gauges
IEC 60068-2-75 2014 Environmental testing - Part 2-75: Tests - EN 60068-2-75 2014
Test Eh: Hammer tests
IEC 60081 -  Double-capped fluorescent lamps - EN 60081 -
Performance specifications
IEC 60112 2003 Method for the determination of the proof EN 60112 2003
and the comparative tracking indices of
solid insulating materials
+ A1 2009  + A1 2009
IEC 60155 -  Glow-starters for fluorescent lamps EN 60155 -
IEC 60352-1 1997 Solderless connections -- Part 1: Wrapped EN 60352-1 1997
connections - General requirements, test
methods and practical guidance
IEC 60399 -  Barrel thread for lampholders with shade EN 60399 -
holder ring
IEC 60529 1989 Degrees of protection provided by EN 60529 1991
enclosures (IP Code)
- -  + corrigendum May 1993
+ A1 1999  + A1 2000
+ A2 2013  + A2 2013
IEC 60598-1 -  Luminaires -- Part 1: General requirements EN 60598-1 -
and tests
IEC 60695-2-11 2000 Fire hazard testing -- Part 2-11: - -
Glowing/hot-wire based test methods -
Glow-wire flammability test method for
end-products
IEC 60695-11-5 2016 Fire hazard testing - Part 11-5: Test flames EN 60695-11-5 2017
- Needle-flame test method - Apparatus,
confirmatory test arrangement and
guidance
ISO 4046-4 2016 Paper, board, pulps and related terms - - -
Vocabulary - Part 4: Paper and board
grades and converted products
Annex ZZ
(informative)
Relationship between this European standard and the safety objectives of
Directive 2014/35/EU [2014 OJ L96] aimed to be covered

This European standard has been prepared under a Commission’s standardisation request relating to
harmonised standards in the field of the Low Voltage Directive, M/511, to provide one voluntary means
of conforming to safety objectives of Directive 2014/35/EU of the European Parliament and of the
Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the
making available on the market of electrical equipment designed for use within certain voltage limits
[2014 OJ L96].
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZZ.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding safety objectives of
that Directive, and associated EFTA regulations.

Table ZZ.1 – Correspondence between this European standard and Annex I of
Directive 2014/35/EU [2014 OJ L96]

Safety objectives of Directive Clause(s) / sub-clause(s)
Remarks / Notes
2014/35/EU of this EN
1. General conditions
a) the essential characteristics, Clause 8
the recognition and observance

of which will ensure that
electrical equipment will be used
safely and in applications for

which it was made, shall be
marked on the electrical
equipment, or, if this is not
possible, on an accompanying
document;
b) the electrical equipment, All clauses
together with its component
parts, shall be made in such a

way as to ensure that it can be
safely and properly assembled
and connected;
c) the electrical equipment shall See item 2 and 3 of this table
be so designed and
manufactured as to ensure that
protection against the hazards
set out in points 2 and 3 is
assured, providing that the
equipment is used in
applications for which it was
made and is adequately
maintained.
2. Protection against hazards
arising from the electrical
equipment
Measures of a technical nature
shall be laid down in accordance
with point 1, in order to ensure
that:
a) persons and domestic Clauses 4, 9, 10, 11, 12 and 16
animals are adequately
protected against the danger of

physical injury or other harm
which might be caused by direct
or indirect contact;
b) temperatures, arcs or Clauses 11, 12, 14, 17 and 18
radiation which would cause a
danger, are not produced;
c) persons, domestic animals Clauses 4, 11, 14, 15 and 19
and property are adequately
protected against non-electrical

dangers caused by the electrical
equipment which are revealed
by experience;
d) the insulation is suitable for Clauses 9, 11, 15, 17 and 18

foreseeable conditions.
3. Protection against hazards
which may be caused by
external influences on the
electrical equipment
Technical measures shall be
laid down in accordance with
point 1, in order to ensure that
the electrical equipment:
a) meets the expected Clauses 8, 11, 15 and 19
mechanical requirements in
such a way that persons,
domestic animals and property
are not endangered;
b) is resistant to non-mechanical Clauses 11, 13, 17 and 18
influences in expected
environmental conditions, in
such a way that persons,
domestic animals and property
are not endangered;
c) does not endanger persons, Clauses 11, 13 and 18
domestic animals and property
in foreseeable conditions of
overload.
WARNING 1: Presumption of conformity stays valid only as long as a reference to this European
standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2: Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
IEC 60400 ®
Edition 8.0 2017-06
INTERNATIONAL
STANDARD
Lampholders for tubular fluorescent lamps and starterholders

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.10 ISBN 978-2-8322-4430-2

– 2 – IEC 60400:2017 © IEC 2017
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General requirement . 12
5 General conditions for tests . 13
6 Electrical rating . 14
7 Classification . 14
8 Marking . 15
9 Protection against electric shock . 17
10 Terminals . 19
11 Construction . 21
12 Resistance to dust and moisture . 26
13 Insulation resistance and electric strength . 27
14 Endurance . 28
15 Mechanical strength . 29
16 Screws, current-carrying parts and connections . 31
17 Creepage distances and clearances . 33
18 Resistance to heat, fire and tracking . 35
19 Resistance to excessive residual stresses (season cracking) and to rusting . 40
Annex A (normative) Examples of lampholders covered by IEC 60400 . 86
Annex B (normative) Season cracking/corrosion test . 87
B.1 General . 87
B.2 Test cabinet . 87
B.3 Test solution . 87
B.4 Test procedure . 88
Annex C (informative) Protection against electric shock – Explanatory details for the
installation of lampholders according to 9.2 . 89
Annex D (informative) Clauses containing new or more stringent requirements with
respect to the previous edition . 90
Bibliography . 91

Figure 1 – Mounting jig for the testing of lampholders . 41
Figure 2 – Mounting sheet . 42
Figure 3 – Fixture for the testing of lampholder flexibility . 43
Figure 4 – Test caps G5, GX5 and G13 . 44
Figure 5 – Impact test apparatus and mounting support . 46
Figure 6 – Test cap for the test of Clause 14 for lampholders 2GX13 . 47
Figure 7 – Ball-pressure apparatus . 48
Figure 8 – Bracket for fixing lampholders for the impact test . 48
Figure 9 – Test cap and test assembly for testing of resistance to heat of lampholders
G13, G5 and GX5 with T marking . 50
Figure 10 – Dimensions of starterholder and holder . 52

IEC 60400:2017 © IEC 2017 – 3 –
Figure 11 – “Go” plug gauges for starterholders . 53
Figure 12 – Plug gauge for starterholders for testing contact making and retention . 54
Figure 13 – Special plug gauge for starterholders for testing contact making . 55
Figure 14 – Test cap for the test of Clause 14 for lampholders G5 and GX5 . 56
Figure 15 – Test cap for the test of Clause 14 for lampholders G13 . 56
Figure 16 – Test cap for the test of Clause 14 for lampholders 2G13 . 57
Figure 17 – Test cap for the test of Clause 14 for lampholders G20 . 57
Figure 18 – Test cap for the test of Clause 14 for lampholders Fa6 . 57
Figure 19 – Test cap for the test of Clause 14 for lampholders G10q, GU10q and
GZ10q . 58
Figure 20 – Test cap for the test of Clause 14 for lampholders Fa8 . 58
Figure 21 – Test starter for the test of Clause 14 . 59
Figure 22 – Test cap for the test of Clause 14 for lampholders R17d . 60
Figure 23 – Test cap for the test of Clause 14 for lampholders 2G11 . 61
Figure 24 – Test cap for the test of Clause 14 for lampholders G23 and GX23 . 62
Figure 25 – Test cap for the test of Clause 14 for lampholders GR8 . 63
Figure 26 – Test cap for the test of Clause 14 for lampholders GR10q . 63
Figure 27 – Test cap for the test of Clause 14 for lampholders GX10q and GY10q . 64
Figure 28 – Test cap for the test of Clause 14 for lampholders G24, GX24 and GY24 . 65
Figure 29 – Test cap for the test of Clause 14 for lampholders G32 and GY32 . 66
Figure 30 – Test cap for the test of 18.1 for lampholders G23 . 67
Figure 31 – Test cap for the test of 18.1 for lampholders GR8 . 68
Figure 32 – Test cap for the test of 18.1 for lampholders GR10q . 69
Figure 33 – Test cap for the test of 18.1 for lampholders GX10q . 70
Figure 34 – Test cap for the test of 18.1 for lampholders GY10q . 71
Figure 35 – Test cap for the test of 18.1 for lampholders 2G11 . 72
Figure 36 – Test cap for the test of 18.1 for lampholders GX23 . 73
Figure 37 – Test cap for the test of 18.1 for lampholders G24, GX24 and GY24 (1 of 2). 74
Figure 38 – Test cap for the test of 18.1 for lampholders G32, GX32 and GY32 (1 of 2). 76
Figure 39 – Test cap for the test of Clause 14 for lampholders 2G8 . 78
Figure 40 – Test cap for the test of Clause 14 for lampholders GX53 . 79
Figure 41 – Standard test finger (according to IEC 60529:2014) . 80
Figure 42 – Test cap for the test of Clause 14 for lampholders W4.3x8.5d . 81
Figure 43 – Test cap for the test of Clause 14 for lampholders GR14q . 82
Figure 44 – Test cap for the test of Clause 14 for lampholders G28d . 83
Figure 45 – Test cap for the test of Clause 14 for lampholders 2GX11 . 84
Figure 46 – Test probes for checking gasket sleeves on lampholders for higher IP
protection . 85
Figure C.1 – Examples of lampholders . 89

Table 1 – Minimum values of insulation resistance . 27
Table 2 – Torque tests on screws . 31
Table 3 – Minimum distances for AC sinusoidal voltages up to 30 kHz – Impulse
withstand category II . 34

– 4 – IEC 60400:2017 © IEC 2017
Table 4 – Minimum distances for rated ignition voltages or equivalent peak voltage U . 35
P
Table A.1 – Examples of lampholders covered by IEC 60400 . 86
Table B.1 – pH adjustment . 87

IEC 60400:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LAMPHOLDERS FOR TUBULAR FLUORESCENT
LAMPS AND STARTERHOLDERS
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 60400 has been prepared by subcommittee 34B: Lamp caps and
holders, of IEC technical committee 34: Lamps and related equipment.
This eighth edition cancels and replaces the seventh edition published in 2008,
Amendment 1:2011 and Amendment 2:2014. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment with ISO/IEC drafting rules;
b) renumbering of clauses, tables and figures.

– 6 – IEC 60400:2017 © IEC 2017
The text of this International Standard is based on the following documents:
FDIS Report on voting
34B/1900/FDIS 34B/1911/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
In this standard, the following print types are used:
– requirements proper: in roman type;
– test specifications: in italic type;
– notes: in smaller roman type.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IEC 60400:2017 © IEC 2017 – 7 –
LAMPHOLDERS FOR TUBULAR FLUORESCENT
LAMPS AND STARTERHOLDERS
1 Scope
This document states the technical and dimensional requirements for lampholders for tubular
fluorescent lamps and for starterholders, and the methods of test to be used in determining
the safety and the fit of the lamps in the lampholders and the starters in the starterholders.
This document covers independent lampholders and lampholders for building-in, used with
tubular fluorescent lamps provided with caps as listed in Annex A, and independent
starterholders and starterholders for building-in, used with starters in accordance with
IEC 60155, intended for use in AC circuits where the working voltage does not exceed
1 000 V r.m.s.
This document also covers lampholders for single-capped tubular fluorescent lamps
integrated in an outer shell and dome similar to Edison screw lampholders (e.g. for G23 and
G24 capped lamps). Such lampholders are tested in accordance with the following clauses
and subclauses of IEC 60238: 9.4; 9.5; 9.6; 10.3; 11.7; 12; 13.2; 13.5; 13.6; 13.7; 14; 16.3;
16.4; 16.5 and 16.9.
This document also covers lampholders which are integral with a luminaire or intended to be
built into appliances. It covers the requirements for the lampholder only. For all other requirements,
such as protection against electric shock in the area of the terminals, the requirements of the
relevant appliance standard are applicable and tested after building into the appropriate
equipment, when that equipment is tested according to its own standard. Lampholders for use
by luminaire manufacturers only are not for retail sale.
This document also applies, as far as is reasonable, to lampholders and starterholders other
than the types explicitly mentioned above and to lamp connectors.
Where the term "holder" is used in this document, both lampholders and starterholders are
intended.
Where the term “bi-pin lampholder” is used, lampholders for wedged caps are also intended.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 60061-2, Lamp caps and holders together with gauges for the control of
interchangeability and safety – Part 2: Lampholders
IEC 60061-3, Lamp caps and holders together with gauges for the control of
interchangeability and safety – Part 3: Gauges
IEC 60068-2-75:2014, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60081, Double-capped fluorescent lamps – Performance specifications

– 8 – IEC 60400:2017 © IEC 2017
IEC 60112:2003, Method for the determination of the proof and the comparative tracking
indices of solid insulating materials
IEC 60112:2003/AMD1:2009
IEC 60155, Glow-starters for fluorescent lamps
IEC 60352-1:1997, Solderless connections – Part 1: Wrapped connections – General
requirements, test methods and practical guidance
IEC 60399, Barrel thread for lampholders with shade holder ring
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60598-1, Luminaires – Part 1: General requirements and tests
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end-products (GWEPT)
IEC 60695-11-5:2016 Fire hazard testing – Part 11-5: Test flames – Needle-flame test method
– Apparatus, confirmatory test arrangement and guidance
ISO 4046-4:2016, Paper, board, pulps and related terms – Vocabulary – Part 4: Paper and
board grades and converted products
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
rated voltage
voltage declared by the manufacturer to indicate the highest working voltage for which the
holder is intended
3.2
working voltage
highest r.m.s. voltage which may occur across any insulation, transients being disregarded,
both when the lamp or starter is operating under normal conditions and when the lamp or
starter is removed
3.3
flexible lampholders for linear double-capped fluorescent lamps
pair of lampholders in which the base of each holder is rigidly mounted in the luminaire but
which has one or both of the lampholders so designed as to allow axial movement of the
contacts to provide compensation for variations in lamp lengths and, where necessary, to
permit insertion and removal of the lamp
Note 1 to entry: In case of doubt as to whether a lampholder G5, GX5 or G13 provides the required axial
movement of the contacts, a test with the device shown in Figure 3 can be carried out.

IEC 60400:2017 © IEC 2017 – 9 –
3.4
inflexible lampholders for linear double-capped fluorescent lamps
pair of lampholders intended for rigid mounting and in which no axial movement of the
contacts is provided or is needed, either for the insertion and removal of the lamp or as
compensation for variation in lamp lengths
3.5
flexibly mounted lampholders for linear double-capped fluorescent lamps
pair of lampholders which do not in themselves provide for any axial movement of the contact
system but which are intended to be mounted in a luminaire in a specified manner so that the
combination provides the necessary axial movement of the contact system
Note 1 to entry: Lampholders of this type may or may not also be suitable for rigid mounting.
3.6
lamp connectors
set of contacts mounted on flexible conductors which provide for electrical contact but do not
support the lamp
3.7
holder for building-in
holder designed to be built into a luminaire, an additional enclosure or the like
3.7.1
unenclosed holder
holder for building-in so designed that it requires additional means, for example an enclosure,
to meet the requirements of IEC 60400 with regard to protection against electric shock
3.7.2
enclosed holder
holder for building-in so designed that on its own it fulfils the requirements of IEC 60400 with
regard to protection against electric shock and IP classification, if appropriate
3.8
independent holder
holder so designed that it can be mounted separately from a luminaire and at the same time
providing all the necessary protection according to its classification and marking
3.9
rated operating temperature
highest temperature for which the holder is designed
3.10
rated lampholder rearside temperature
rearside temperature for lampholders with T marking ascertained by test b) in 18.1 of
IEC 60400, or a higher temperature as declared by the manufacturer
3.11
type test
test or series of tests made on a type test sample, for the purpose of checking compliance of
the design of a given product with the requirements of the relevant standard
3.12
type test sample
sample consisting of one or more similar specimens submitted by the manufacturer or
responsible vendor for the purpose of a type test

– 10 – IEC 60400:2017 © IEC 2017
3.13
live part
conductive part which may cause an electric shock
3.14
rated ignition voltage
highest peak value of the ignition voltages the holder is able to withstand
3.15
multilamp ballast
electronic mains ballast designed and declared to comply for the application of lamps with
different keys
3.16
impulse withstand category
numeral defining a transient overvoltage condition
Note 1 to entry: Impulse withstand categories I, II, III and IV are used.
a) Purpose of classification of impulse withstand categories
Impulse withstand categories are to distinguish different degrees of availability of equipment with regard to
required expectations on continuity of service and on an acceptable risk of failure.
By selection of impulse withstand levels of equipment, insulation co-ordination can be achieved in the whole
installation reducing the risk of failure to an acceptable level providing a basis for overvoltage control.
A higher characteristic numeral of an impulse withstand category indicates a higher specific impulse withstand of
the equipment and offers a wider choice of methods for overvoltage control.
The concept of impulse withstand categories is used for equipment energized directly from the mains.
b) Description of impulse withstand categories
Equipment of impulse withstand category I is equipment which is intended to be connected to the fixed electrical
installations of buildings. Protective means are taken outside the equipment – either in the fixed installation or
between the fixed installation and the equipment – to limit transient overvoltages to the specific level.
Equipment of impulse withstand category II is equipment to be connected to the fixed electrical installations of
buildings.
Equipment of impulse withstand category III is equipment which is part of the fixed electrical installations and other
equipment where a higher degree of availability is expected.
Equipment of impulse withstand category IV is for use at or in the proximity of the origin of the electrical
installations of buildings upstream of the main distribution board.
3.17
primary circuit
circuit which is directly connected to the AC mains supply
Note 1 to entry: It includes, for example, the means for connection to the AC mains supply, the primary windings
of transformers, motors and other loading devices.
3.18
secondary circuit
circuit which has no direct connection to a primary circuit and derives its power from a
transformer, converter or equivalent isolation device, or from a battery
Note 1 to entry: Exception: autotransformers. Although having direct connection to a primary circuit, the tapped
part of them is also deemed to be a secondary circuit in the above sense.
Note 2 to entry: Mains transients in such a circuit are attenuated by the corresponding primary windings. In
addition, inductive ballasts reduce the mains transient voltage height. Therefore, components located after a
primary circuit or after an inductive ballast can be suited for an impulse withstand category of one step lower, i.e.
for impulse withstand category II.

IEC 60400:2017 © IEC 2017 – 11 –
3.19
basic insulation
insulation applied to live parts to provide basic protection against electric shock
Note 1 to entry: Basic insulation does not necessarily include insulation used exclusively for functional purposes.
3.20
supplementary insulation
independent insulation applied in addition to basic insulation in order to provide protection
against electric shock in the event of a failure of basic insulation
3.21
double insulation
insulation comprising both basic insulation and supplementary insulation
3.22
reinforced insulation
single insulation system applied to live parts, which provides a degree of protection against
electric shock equivalent to double insulation under the conditions specified
Note 1 to entry: The term "insulation system" does not imply that the insulation shall be one homogeneous piece.
It can comprise several layers which cannot be tested singly as supplementary or basic insulation.
3.23
enclosed reinforced insulated lampholder
lampholder for building-in so designed that on its own it fulfils the requirements for double or
reinforced insulated parts in class II applications
3.24
partly reinforced insulated lampholder
lampholder for building-in, so designed that some parts of the lampholder require additional
means to fulfil the requirements with regard to double or reinforced insulation
Note 1 to entry: In some cases, the dimensions might be achieved only after mounting into the luminaire.
3.25
rated current
current declared by the manufacturer to indicate the highest current for which the lampholder
is intended
[SOURCE: IEC 60838-1:2016 3.3]
3.26
critical frequency
ƒ
crit
frequency at which the reduction of the breakdown voltage of a clearance begins (occurs)
Note 1 to entry: ƒ ≈ 0,2/d [MHz] where d (in mm) is the clearance according to Table 3 (basic or supplementary
crit
insulation and reinforced insulation respectively) disregarding the frequency.
[SOURCE: IEC 61347-1:2015, 3.40, modified — the note has been added]
3.27
ignition voltage
peak voltage applied to ignite a discharge lamp
[SOURCE: IEC 61347-1:2015, 3.46]

– 12 – IEC 60400:2017 © IEC 2017
3.27.1
ignition pulse voltage
peak ignition voltage with a total duration of ≤ 750 µs (summation of all pulse durations) within
10 ms, with the duration time (width) of each pulse being measured at the level of 50 % of the
maximum absolute peak value
Note 1 to entry: Ignition pulse waveforms, which are considered as ignition pulse voltage, should not contain any
dominant frequency above 30 kHz or should be usually highly damped (after 20 μs the peak voltage level should be
less than one half of the maximum peak voltage). For the assessment of the dominant frequency
IEC 60664-4:2005, Annex E should be consulted.
[SOURCE: IEC 61347-1:2015, 3.46.1]
3.28
maximum working voltage
U
out
maximum occurring working voltage (r.m.s.) between the output terminals of a controlgear or
between the output terminals and earth, during normal or abnormal operating condition
Note 1 to entry: Transients and ignition voltages have to be neglected.
[SOURCE: IEC 61347-1:2015, 3.33, modified — "of a controlgear" has been added]
3.29
maximum working peak output voltage
Û
out
maximum repetitive occurring peak working voltage between the output terminals of a
controlgear or between its output terminals and earth, during normal or abnormal operating
condition and with transients neglected
[SOURCE: IEC 61347-1:2015, 3.45, modified — "of a controlgear" has been added]
3.30
equivalent transformed peak voltage
U
p
transformed output peak voltage, which is converted for the worst case peak voltage with its
related frequency into an ignition pulse voltage
Note 1 to entry: The value of the declared equivalent transformed output peak voltage is the essential parameter
for selecting the associated components.
Note 2 to entry: See 3.27.1.
Note 3 to entry: To determine the declared equivalent transformed output peak voltage for basic insulation U
p
[basic] the worst case combination of the maximum occurring peak voltage and frequency has to be taken into
account, which means the maximum clearance according to IEC 61347-1:2015, Table 10 for basic insulation.
Note 4 to entry: To determine the declared equivalent transformed output peak voltage for the reinforced
insulation U [reinforced] the worst case combination of the maximum occurring peak voltage and frequency has to
p
be taken into account, which means the maximum clearance according to IEC 61347-1:2015, Table 11 for
reinforced insulation.
[SOURCE: IEC 61347-1:2015, 3.47]
4 General requirement
Holders shall be so designed and constructed that, in normal use, they function reliably and
cause no danger to persons or surroundings.
In general, compliance is checked by carrying out all the tests specified.

IEC 60400:2017 © IEC 2017 – 13 –
In addition, the enclosure of independent holders shall comply with the appropriate
requirements of IEC 60598-1, including the classification and marking requirements of that
standard.
5 General conditions for tests
5.1 Tests according to this document are type tests.
NOTE The requirements and tolerances given in this document are related to testing of a type test sample
submitted for that purpose.
Compliance of the type test sample does not ensure compliance of the whole production of a manufacturer with this
safety standard.
In addition to type testing, conformity of production is the responsibility of the manufacturer and can include routine
tests and quality assurance.
For further information, see IEC 60061-4 (inclusion of guidance on conformity testing during manufacture is in
preparation).
5.2 Unless otherwise specified, the tests are made at an ambient temperature of
20 °C ± 5 °C and with the holder in the most unfavourable position for normal use.
5.3 The tests shall be carried out in the order of the clauses, unless another succession of
tests is specified.
Holders intended to provide an IP classification greater
...