IEC 60400:2008

IEC 60400 ®
Edition 7.2 2014-06
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
Lampholders for tubular fluorescent lamps and starterholders

Douilles pour lampes tubulaires à fluorescence et douilles pour starters

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IEC 60400 ®
Edition 7.2 2014-06
CONSOLIDATED
VERSION
VERSION
CONSOLIDÉE
colour
inside
Lampholders for tubular fluorescent lamps and starterholders

Douilles pour lampes tubulaires à fluorescence et douilles pour starters

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.10 ISBN 978-2-8322-1683-5

IEC 60400 ®
Edition 7.2 2014-06
REDLINE VERSION
VERSION REDLINE
colour
inside
Lampholders for tubular fluorescent lamps and starterholders

Douilles pour lampes tubulaires à fluorescence et douilles pour starters

– 2 – IEC 60400:2008
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CONTENTS
FOREWORD . 5
1 General . 7
1.1 Scope . 7
1.2 Normative references . 7
2 Terms and definitions . 8
3 General requirement . 11
4 General conditions for tests . 12
5 Electrical rating . 13
6 Classification . 13
7 Marking . 14
8 Protection against electric shock . 16
9 Terminals . 18
10 Construction . 19
11 Resistance to dust and moisture . 24
12 Insulation resistance and electric strength . 25
13 Endurance . 26
14 Mechanical strength . 27
15 Screws, current-carrying parts and connections . 29
16 Creepage distances and clearances . 31
17 Resistance to heat, fire and tracking . 33
18 Resistance to excessive residual stresses (season cracking) and to rusting . 37
Annex A (normative) Examples of lampholders covered by this standard . 84
Annex B (normative) Season cracking/corrosion test . 85
Annex C (informative) Protection against electric shock – Explanatory details for the
installation of lampholders according to 8.2 . 87
Bibliography . 89

Figure 1 – Mounting jig for the testing of lampholders . 39
Figure 2 – Mounting sheet . 40
Figure 3 – Fixture for the testing of lampholder flexibility . 41
Figure 4 – Test caps G5, GX5 and G13 . 42
Figure 5 – Impact test apparatus . 43
Figure 5a – Mounting support . 44
Figure 6 – Test cap for the test of Clause 13 for lampholders 2GX13 . 45
Figure 7 – Ball-pressure apparatus . 46
Figure 8 – Bracket for fixing lampholders for the impact test . 46
Figure 9 – Test caps and test assembly for testing of resistance to heat of lampholders
G13 with T marking (see 17.1) . 47
Figure 9a – Test cap and test assembly for testing of resistance to heat of lampholders
G5 and GX5 with T marking (see 17.1) . 49
Figure 10 – Dimensions of starterholder . 50

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Figure 10a – Dimensions of holder intended for accepting only starters according to
Annex B of IEC 60155 . 51
Figure 11 – "Go" plug gauges for starterholders . 52
Figure 12 – Plug gauge for starterholders for testing contact making and retention . 53
Figure 13 – Special plug gauge for starterholders for testing contact making. 54
Figure 14 – Test cap for the test of Clause 13 for lampholders G5 . 54
Figure 14a – Test cap for the test of Clause 13 for lampholders GX5 . 55
Figure 15 – Test cap for the test of Clause 13 for lampholders G13 . 54
Figure 16 – Test cap for the test of Clause 13 for lampholders 2G13 . 56
Figure 17 – Test cap for the test of Clause 13 for lampholders G20 . 56
Figure 18 – Test cap for the test of Clause 13 for lampholders Fa6 . 56
Figure 19 – Test cap for the test of Clause 13 for lampholders G10q, GU10q and GZ10q . 57
Figure 20 – Test cap for the test of Clause 13 for lampholders Fa8 . 57
Figure 21 – Test starter for the test of Clause 13 . 58
Figure 22 – Test cap for the test of Clause 13 for lampholders R17d . 59
Figure 23 – Test cap for the test of Clause 13 for lampholders 2G11 . 60
Figure 24 – Test cap for the test of Clause 13 for lampholders G23 and GX23 . 61
Figure 25 – Test cap for the test of Clause 13 for lampholders GR8 . 62
Figure 26 – Test cap for the test of Clause 13 for lampholders GR10q . 62
Figure 27 – Test cap for the test of Clause 13 for lampholders GX10q and GY10q . 63
Figure 28 – Test cap for the test of Clause 13 for lampholders G24, GX24 and GY24 . 64
Figure 29 – Test cap for the test of Clause 13 for lampholders G32 and GY32 . 65
Figure 30 – Test cap for the test of 17.1 for lampholders G23 . 66
Figure 31 – Test cap for the test of 17.1 for lampholders GR8 . 67
Figure 32 – Test cap for the test of 17.1 for lampholders GR10q . 68
Figure 33 – Test cap for the test of 17.1 for lampholders GX10q . 69
Figure 34 – Test cap for the test of 17.1 for lampholders GY10q . 70
Figure 35 – Test cap for the test of 17.1 for lampholders 2G11 . 71
Figure 36 – Test cap for the test of 17.1 for lampholders GX23 . 72
Figure 37 – Test cap for the test of 17.1 for lampholders G24, GX24 and GY24 . 73
Figure 38 – Test cap for the test of 17.1 for lampholders G32, GX32 and GY32 . 75
Figure 39 – Test cap for the test of Clause 13 for lampholders 2G8 . 77
Figure 40 – Test cap for the test of Clause 13 for lampholders GX53 . 78
Figure 41 – Standard test finger (according to IEC 60529) . 79
Figure 42 – Test cap for the test of Clause 13 for lampholders W4.3x8.5d . 80
Figure 43 – Test cap for the test of Clause 13 for lampholders GR14q . 80
Figure 44 – Test cap for the test of Clause 13 for lampholders G28d . 81
Figure 45 – Test cap for the test of Clause 13 for lampholders 2GX11 . 82
Figure 46 – Tests probes for checking gasket sleeves on lampholders for higher IP
protection . 83
Figure C.1 to C.4 – Examples of lampholders . 88

Table 1 – Minimum values of insulation resistance . 26
Table 2 – Torque tests on screws . 30

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Table 3 − Minimum distances for a.c. (50 Hz/60 Hz) sinusoidal voltages − Impulse
withstand category II . 32
Table 4 – Minimum distances for non-sinusoidal pulse voltages . 33
Table B.1 – pH adjustment . 85

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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
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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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 IEC 60400 bears the edition number 7.2. It consists of the
seventh edition (2008-07) [documents 34B/1383/FDIS and 34B/1399/RVD], its
amendment 1 (2011-04) [documents 34B/1591/FDIS and 34B/1600/RVD] and its
amendment 2 (2014-06) [documents 34B/1730/FDIS and 34B/1742/RVD]. The technical
content is identical to the base edition and its amendments.
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendments 1 and 2. Additions and deletions are displayed in red, with
deletions being struck through. A separate Final version with all changes accepted is
available in this publication.
This publication has been prepared for user convenience.

– 6 – IEC 60400:2008
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International Standard IEC 60400 has been prepared by subcommittee 34B: Lamp caps and
holders, of IEC technical committee 34: Lamps and related equipment.
In this edition, information on lampholders intended to be used in applications where they are
accessible in normal use (class II luminaires as well as class I luminaries) has been
introduced, as well as requirements for contact-making to pins for single-capped fluorescent
lamps, introduction of new fits in the text and Annex A, and requirements for shade holder rings
have been adopted.
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 the base publication and its amendments 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 publication using a colour printer.

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LAMPHOLDERS FOR TUBULAR FLUORESCENT LAMPS
AND STARTERHOLDERS
1 General
1.1 Scope
This International Standard 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 standard 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 a.c. circuits where the working voltage does not exceed 1 000 V
r.m.s.
This standard 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: 8.4; 8.5; 8.6; 9.3; 10.7; 11; 12.2; 12.5; 12.6; 12.7; 13; 15.3; 15.4; 15.5 and 15.9.
This standard 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 to be observed 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 standard 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 the standard, both lampholders and starterholders are
intended.
Where the term “bi-pin lampholder” is used, lampholders for wedged caps are also intended.
1.2 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 60061-1, Lamp caps and holders together with gauges for the control of interchangeability
and safety – Part 1: Lamp caps
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 60068-2-20:1979, Environmental testing – Part 2: Tests – Test T: Soldering

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IEC 60068-2-75:1997, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60081, Double-capped fluorescent lamps – Performance specifications
IEC 60112:2003, Method for the determination of the proof and the comparative tracking
indices of solid insulating materials
IEC 60155, Glow-starters for fluorescent lamps
IEC 60238, Edison screw lampholders
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)
Amendment 1 (1999)
IEC 60598-1, Luminaires – Part 1: General requirements and tests
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, 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
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method
– Apparatus, confirmatory test arrangement and guidance
IEC 61199, Single-capped fluorescent lamps – Safety specifications
ISO 4046-4:2002, Paper, board, pulps and related terms – Vocabulary – Part 4: Paper and
board grades and converted products
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
rated voltage
voltage declared by the manufacturer to indicate the highest working voltage for which the
holder is intended
2.2
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
2.3
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

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contacts to provide compensation for variations in lamp lengths and, where necessary, to
permit insertion and removal of the lamp
NOTE 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 may be carried out.
2.4
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
2.5
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 Lampholders of this type may or may not also be suitable for rigid mounting.
2.6
lamp connectors
set of contacts mounted on flexible conductors which provide for electrical contact but do not
support the lamp
2.7
holder for building-in
holder designed to be built into a luminaire, an additional enclosure or the like
2.7.1
unenclosed holder
holder for building-in so designed that it requires additional means, for example an enclosure,
to meet the requirements of this standard with regard to protection against electric shock
2.7.2
enclosed holder
holder for building-in so designed that on its own it fulfils the requirements of this standard with
regard to protection against electric shock and IP classification, if appropriate
2.8
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
2.9
rated operating temperature
highest temperature for which the holder is designed
2.10
rated lampholder rearside temperature
rearside temperature for lampholders with T marking ascertained by test b) in 17.1, or a higher
temperature as declared by the manufacturer
2.11
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

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2.12
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
2.13
live part
conductive part which may cause an electric shock
2.14
rated pulse voltage
highest peak value of the pulse voltages the holder is able to withstand
2.15
multilamp ballast
electronic mains ballast designed and declared to comply for application of lamps with different
keys
2.16
impulse withstand categorie
numeral defining a transient overvoltage condition
NOTE 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.
2.17
primary circuit
circuit which is directly connected to the AC mains supply
It includes, for example, the means for connection to the AC mains supply, the primary
windings of transformers, motors and other loading devices.
2.18
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

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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 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.
2.19
basic insulation
insulation applied to live parts to provide basic protection against electric shock
NOTE Basic insulation does not necessarily include insulation used exclusively for functional purposes.
2.20
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
2.21
double insulation
insulation comprising both basic insulation and supplementary insulation
2.22
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 The term "insulation system" does not imply that the insulation must be one homogeneous piece. It may
comprise several layers which cannot be tested singly as supplementary or basic insulation.
2.23
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
2.24
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 In some cases, the dimensions might be achieved only after mounting into the luminaire.
3 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.
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.
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4 General conditions for tests
4.1 Tests according to this standard are type tests.
NOTE The requirements and tolerances permitted by this standard 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 may include routine
tests and quality assurance.
For further information, see IEC 60061-4 (inclusion of guidance on conformity testing during manufacture is in
preparation).
4.2 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.
4.3 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 than IP20 shall be subjected to the
tests in 11.1 and 11.2 after the test in 17.1.
4.4 The tests and inspections are carried out on a total of:
– eight pairs of matching lampholders intended for linear double-capped fluorescent
lamps;
NOTE If a pair of lampholders consists of identical holders, it is sufficient for one holder instead of one pair to be
subjected to all the tests, except for the test of item d) in 10.5, where one pair is needed.
– eight specimens intended for single-capped fluorescent lamps and eight starter-holders;
in the order of the clauses, as follows:
– two pairs or two specimens: Clause 5 up to and including Clause 16 (except for 9.2
and 9.5);
NOTE The tests of 9.2 are carried out on the number of separate specimens as required by the relevant standards.
– three pairs or three specimens: 9.5 and 17.1;
– two pairs or two specimens: 17.2 up to and including 17.5 (of which one specimen for
the test in 17.2 and the other for the tests in 17.4 and 17.5);
– one pair or one specimen: 17.6 and Clause 18.
In the case of flexible and inflexible lampholders G5, GX5 or G13 (see Definitions 2.3 and 2.4
respectively), the specimens are mounted on two pairs of mounting sheets as specified in
Figure 2.
One pair of holders is mounted so as to represent the minimum mounting distance for this pair
of holders according to the manufacturer's mounting instructions; the other pair is mounted at
the maximum distance. The matching mounting sheets are marked.
In special cases, it may be necessary to test more than the number of specimens specified
above.
Together with these specimens, the manufacturer's mounting instructions (see 7.3) shall be
supplied.
For holders intended to provide an IP classification greater than IP20 with detachable gaskets
having a maximum operating temperature different from the values in 17.1, an additional set of

+AMD1:2011+AMD2:2014 CSV  IEC 2014
gaskets shall be supplied with the specimen, together with information on their maximum
operating temperature (this is part of the manufacturer's mounting instructions).
NOTE This does not refer to detachable gaskets on the mounting surface of the holder (see 17.1).
4.5 Holders are deemed to comply with this standard if no specimen fails in the complete
series of tests specified in 4.4.
If one specimen fails in one test, that test and the preceding ones which may have influenced
the result of that test are repeated on another set of specimens to the number required in 4.4,
all specimens of which shall then comply with the repeated tests and with the subsequent tests.
Holders are deemed not to comply with this standard if there are more failures than that of one
specimen in one of the tests.
NOTE In general, it will only be necessary to repeat the relevant test, unless the specimen fails in the tests
according to Clause 13 or 14, in which case the tests must be repeated from the test according to Clause 12
onwards.
A second type test sample, which may be required should one specimen fail, may be submitted together with the
first sample.
If the additional type test sample is not submitted at the same time, a failure of one specimen entails a rejection.
5 Electrical rating
The electrical rating shall be:
– not less than 125 V and not more than 1 000 V a.c. r.m.s.;
– not less than 1 A;
– not less than 2 A for lampholders GX5, G13, 2G8, 2G13, G20, Fa6, Fa8 and R17d.
NOTE In countries where marking of rated wattage is required in place of rated current, the rating of the G5
lampholder should be not less than 75 W.
6 Classification
Holders are classified as follows.
6.1 According to the protection against electric shock:
– unenclosed lampholders;
– enclosed lampholders;
– independent lampholders;
– partly reinforced insulated lampholders;
– enclosed reinforced insulated lampholders.
NOTE Where a lampholder is used with a working voltage of 50 % or less of its maximum rating, it may be
regarded as equivalent to a reinforced insulated lampholder.
6.2 According to the degree of protection against ingress of dust or water in accordance with
the system of classification (IP Code) explained in IEC 60529.
Symbols for the degrees of protection are given in 7.4 (independent and enclosed holders
only).
6.3 According to the resistance to heat:
– holders for rated operating temperatures up to and including 80 °C;

– 14 – IEC 60400:2008
+AMD1:2011+AMD2:2014 CSV  IEC 2014
– holders for rated operating temperatures over 80 °C.
NOTE The measuring point for the operating temperature is that area of the lampholder where it touches the
lamp cap.
6.4 Moreover, starterholders are classified according to the possibility of accepting different
types of starters:
– starterholders intended for starters according to IEC 60155;
– starterholders intended for starters according to IEC 60155, Annex B only.
7 Marking
7.1 Holders shall be marked with the following:
a) mark of origin (this may take the form of a trade mark, a manufacturer's identification
mark or the name of the responsible vendor);
b) type reference;
NOTE Available technical documentation of the manufacturer like printed catalogues or online catalogues should
allow a clear identification of a lampholder either by a unique catalogue number or by an identifying reference on
the holder, specifying the essential characteristic features and the basic design of the product supplemented by a
clear description. Variations of the basic design like for example different cable length, fixing means, colours etc.,
which do not affect safety or performance of the lampholder, may be disregarded in the type reference marked on
the product. Variations included in the type testing procedure are listed in the corresponding test reports.
c) rated voltage, in volts and rated pulse voltage, in kilovolts, if applicable;
NOTE For holders where, during dimming, i.e. reduction of the load, exceeding of the marked voltage rating is
permissible (increased creepage distances and clearances), the maximum allowed value under these
operating conditions should be given in the manufacturer's catalogue or the like (for example, maximum dimming
voltage: .V).
d) rated current, in amperes (see note to Clause 5);
e) rated operating temperature T if greater than 80 °C, in steps of 10 °C;
f) degree of protection against ingress of dust and water, for drip-proof holders only
(see 7.4);
Marking of IP20 on ordinary holders is not required;
g) for holders protected against dust and moisture, the holder manufacturer shall indicate
in his instructions the nominal diameter of the lamp(s) or starter for which the holder is
intended.
Compliance is checked by inspection.
7.2 The following information, if applicable, shall either be given on the holder, or be made
available in the manufacturer's catalogue or the like:
– the temperature T for the rearside of the holder, for holders tested according to item b)
m
in 17.1;
– the temperature measured for the screwless terminals, for holders tested according to
item b) in 17.1;
– a declaration in conformity with 9.3 of the cross-section of the conductor(s) for which
the holder terminals are suitable.
Compliance is checked by inspection.
For lampholders according to this standard, the distances for impulse withstand category II are
applicable. This information shall be indicated in the manufacturer's catalogue or the like.
Lampholders or starterholders complying with the electrical strength test for double or
reinforced insulation and having creepage distances and clearances equivalent to double or
...

IEC 60400 ®
Edition 7.1 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Lampholders for tubular fluorescent lamps and starterholders

Douilles pour lampes tubulaires à fluorescence et douilles pour starters

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IEC 60400 ®
Edition 7.1 2011-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Lampholders for tubular fluorescent lamps and starterholders

Douilles pour lampes tubulaires à fluorescence et douilles pour starters

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX CS
ICS 29.140.10 ISBN 978-2-88912-610-1

– 2 – 60400  IEC:2008+A1:2011
CONTENTS
FOREWORD . 4
1 General . 6
1.1 Scope . 6
1.2 Normative references . 6
2 Terms and definitions . 7
3 General requirement . 10
4 General conditions for tests . 10
5 Electrical rating . 12
6 Classification . 12
7 Marking . 13
8 Protection against electric shock . 15
9 Terminals . 17
10 Construction . 18
11 Resistance to dust and moisture . 25
12 Insulation resistance and electric strength . 26
13 Endurance . 27
14 Mechanical strength . 28
15 Screws, current-carrying parts and connections . 30
16 Creepage distances and clearances . 32
17 Resistance to heat, fire and tracking . 35
18 Resistance to excessive residual stresses (season cracking) and to rusting . 40
Annex A (normative) Examples of lampholders covered by this standard . 87
Annex B (normative) Season cracking/corrosion test . 88
Annex C (informative) Protection against electric shock – Explanatory details for the
installation of lampholders according to 8.2 . 90
Bibliography . 92

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 . 45
Figure 5a – Mounting support . 46
Figure 6 – Test cap for the test of Clause 13 for lampholders 2GX13 . 47
Figure 7 – Ball-pressure apparatus . 48
Figure 8 – Bracket for fixing lampholders for the impact test . 48
Figure 9 – Test caps and test assembly for testing of resistance to heat of lampholders
G13 with T marking (see 17.1) . 49
Figure 9a – Test cap and test assembly for testing of resistance to heat of lampholders
G5 and GX5 with T marking (see 17.1) . 51
Figure 10 – Dimensions of starterholder . 52
Figure 10a – Dimensions of holder intended for accepting only starters according
to Annex B of IEC 60155 . 53
Figure 11 – "Go" plug gauges for starterholders . 54
Figure 12 – Plug gauge for starterholders for testing contact making and retention . 55

60400  IEC:2008+A1:2011 – 3 –
Figure 13 – Special plug gauge for starterholders for testing contact making. 56
Figure 14 – Test cap for the test of Clause 13 for lampholders G5 . 56
Figure 14a – Test cap for the test of Clause 13 for lampholders GX5 . 57
Figure 15 – Test cap for the test of Clause 13 for lampholders G13 . 56
Figure 16 – Test cap for the test of Clause 13 for lampholders 2G13 . 58
Figure 17 – Test cap for the test of Clause 13 for lampholders G20 . 58
Figure 18 – Test cap for the test of Clause 13 for lampholders Fa6 . 58
Figure 19 – Test cap for the test of Clause 13 for lampholders G10q, GU10q and GZ10q . 59
Figure 20 – Test cap for the test of Clause 13 for lampholders Fa8 . 59
Figure 21 – Test starter for the test of Clause 13 . 60
Figure 22 – Test cap for the test of Clause 13 for lampholders R17d . 61
Figure 23 – Test cap for the test of Clause 13 for lampholders 2G11 . 62
Figure 24 – Test cap for the test of Clause 13 for lampholders G23 and GX23 . 63
Figure 25 – Test cap for the test of Clause 13 for lampholders GR8 . 64
Figure 26 – Test cap for the test of Clause 13 for lampholders GR10q . 64
Figure 27 – Test cap for the test of Clause 13 for lampholders GX10q and GY10q . 65
Figure 28 – Test cap for the test of Clause 13 for lampholders G24, GX24 and GY24 . 66
Figure 29 – Test cap for the test of Clause 13 for lampholders G32 and GY32 . 67
Figure 30 – Test cap for the test of 17.1 for lampholders G23 . 68
Figure 31 – Test cap for the test of 17.1 for lampholders GR8 . 69
Figure 32 – Test cap for the test of 17.1 for lampholders GR10q . 70
Figure 33 – Test cap for the test of 17.1 for lampholders GX10q . 71
Figure 34 – Test cap for the test of 17.1 for lampholders GY10q . 72
Figure 35 – Test cap for the test of 17.1 for lampholders 2G11 . 73
Figure 36 – Test cap for the test of 17.1 for lampholders GX23 . 74
Figure 37 – Test cap for the test of 17.1 for lampholders G24, GX24 and GY24 . 75
Figure 38 – Test cap for the test of 17.1 for lampholders G32, GX32 and GY32 . 77
Figure 39 – Test cap for the test of Clause 13 for lampholders 2G8 . 79
Figure 40 – Test cap for the test of Clause 13 for lampholders GX53 . 80
Figure 41 – Standard test finger (according to IEC 60529) . 81
Figure 42 – Test cap for the test of Clause 13 for lampholders W4.3x8.5d . 82
Figure 43 – Test cap for the test of Clause 13 for lampholders GR14q . 83
Figure 44 – Test cap for the test of Clause 13 for lampholders G28d . 84
Figure 45 – Test cap for the test of Clause 13 for lampholders 2GX11 . 85
Figure 46 – Test probes for checking gasket sleeves on lampholders for higher IP
protection . 86
Figure C.1 to C.4 – Examples of lampholders . 91

Table 1 – Minimum values of insulation resistance . 26
Table 2 – Torque tests on screws . 31
Table 3 − Minimum distances for a.c. (50 Hz/60 Hz) sinusoidal voltages − Impulse
withstand category II . 33
Table 4 – Minimum distances for non-sinusoidal pulse voltages . 35
Table B.1 – pH adjustment . 88

– 4 – 60400  IEC:2008+A1:2011
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
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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
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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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
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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 IEC 60400 consists of the seventh edition (2008)
[documents 34B/1383/FDIS and 34B/1399/RVD] and its amendment 1 (2011) [documents
34B/1591/FDIS and 34B/1600/RVD]. It bears the edition number 7.1.
The technical content is therefore identical to the base edition and its amendment and
has been prepared for user convenience. A vertical line in the margin shows where the
base publication has been modified by amendment 1. Additions and deletions are
displayed in red, with deletions being struck through.

60400  IEC:2008+A1:2011 – 5 –
International Standard IEC 60400 has been prepared by subcommittee 34B: Lamp caps and
holders, of IEC technical committee 34: Lamps and related equipment.
In this edition, information on lampholders intended to be used in applications where they are
accessible in normal use (class II luminaires as well as class I luminaries) has been
introduced, as well as requirements for contact-making to pins for single-capped fluorescent
lamps, introduction of new fits in the text and Annex A, and requirements for shade holder rings
have been adopted.
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 the base publication and its amendments 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 publication using a colour printer.

– 6 – 60400  IEC:2008+A1:2011
LAMPHOLDERS FOR TUBULAR FLUORESCENT LAMPS
AND STARTERHOLDERS
1 General
1.1 Scope
This International Standard 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 standard 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 a.c. circuits where the working voltage does not exceed 1 000 V
r.m.s.
This standard 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: 8.4; 8.5; 8.6; 9.3; 10.7; 11; 12.2; 12.5; 12.6; 12.7; 13; 15.3; 15.4; 15.5 and 15.9.
This standard 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 to be observed 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 standard 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 the standard, both lampholders and starterholders are
intended.
Where the term “bi-pin lampholder” is used, lampholders for wedged caps are also intended.
1.2 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 60061-1, Lamp caps and holders together with gauges for the control of interchangeability
and safety – Part 1: Lamp caps
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 60068-2-20:1979, Environmental testing – Part 2: Tests – Test T: Soldering
IEC 60068-2-75:1997, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests

60400  IEC:2008+A1:2011 – 7 –
IEC 60081, Double-capped fluorescent lamps – Performance specifications
IEC 60112:2003, Method for the determination of the proof and the comparative tracking
indices of solid insulating materials
IEC 60155, Glow-starters for fluorescent lamps
IEC 60238, Edison screw lampholders
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)
Amendment 1 (1999)
IEC 60598-1, Luminaires – Part 1: General requirements and tests
IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, 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
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test method
– Apparatus, confirmatory test arrangement and guidance
IEC 61199, Single-capped fluorescent lamps – Safety specifications
ISO 4046-4:2002, Paper, board, pulps and related terms – Vocabulary – Part 4: Paper and
board grades and converted products
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
rated voltage
voltage declared by the manufacturer to indicate the highest working voltage for which the
holder is intended
2.2
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
2.3
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 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 may be carried out.

– 8 – 60400  IEC:2008+A1:2011
2.4
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
2.5
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 Lampholders of this type may or may not also be suitable for rigid mounting.
2.6
lamp connectors
set of contacts mounted on flexible conductors which provide for electrical contact but do not
support the lamp
2.7
holder for building-in
holder designed to be built into a luminaire, an additional enclosure or the like
2.7.1
unenclosed holder
holder for building-in so designed that it requires additional means, for example an enclosure,
to meet the requirements of this standard with regard to protection against electric shock
2.7.2
enclosed holder
holder for building-in so designed that on its own it fulfils the requirements of this standard with
regard to protection against electric shock and IP classification, if appropriate
2.8
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
2.9
rated operating temperature
highest temperature for which the holder is designed
2.10
rated lampholder rearside temperature
rearside temperature for lampholders with T marking ascertained by test b) in 17.1, or a higher
temperature as declared by the manufacturer
2.11
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
2.12
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

60400  IEC:2008+A1:2011 – 9 –
2.13
live part
conductive part which may cause an electric shock
2.14
rated pulse voltage
highest peak value of the pulse voltages the holder is able to withstand
2.15
multilamp ballast
electronic mains ballast designed and declared to comply for application of lamps with different
keys
2.16
impulse withstand categorie
numeral defining a transient overvoltage condition
NOTE 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.
2.17
primary circuit
circuit which is directly connected to the AC mains supply
It includes, for example, the means for connection to the AC mains supply, the primary
windings of transformers, motors and other loading devices.
2.18
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
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 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.
– 10 – 60400  IEC:2008+A1:2011
2.19
basic insulation
insulation applied to live parts to provide basic protection against electric shock
NOTE Basic insulation does not necessarily include insulation used exclusively for functional purposes.
2.20
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
2.21
double insulation
insulation comprising both basic insulation and supplementary insulation
2.22
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 The term "insulation system" does not imply that the insulation must be one homogeneous piece. It may
comprise several layers which cannot be tested singly as supplementary or basic insulation.
2.23
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
2.24
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 In some cases, the dimensions might be achieved only after mounting into the luminaire.
3 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.
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.
4 General conditions for tests
4.1 Tests according to this standard are type tests.
NOTE The requirements and tolerances permitted by this standard 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 may include routine
tests and quality assurance.
60400  IEC:2008+A1:2011 – 11 –
For further information, see IEC 60061-4 (inclusion of guidance on conformity testing during manufacture is in
preparation).
4.2 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.
4.3 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 than IP20 shall be subjected to the
tests in 11.1 and 11.2 after the test in 17.1.
4.4 The tests and inspections are carried out on a total of:
– eight pairs of matching lampholders intended for linear double-capped fluorescent
lamps;
NOTE If a pair of lampholders consists of identical holders, it is sufficient for one holder instead of one pair to be
subjected to all the tests, except for the test of item d) in 10.5, where one pair is needed.
– eight specimens intended for single-capped fluorescent lamps and eight starter-holders;
in the order of the clauses, as follows:
– two pairs or two specimens: Clause 5 up to and including Clause 16 (except for 9.2
and 9.5);
NOTE The tests of 9.2 are carried out on the number of separate specimens as required by the relevant standards.
– three pairs or three specimens: 9.5 and 17.1;
– two pairs or two specimens: 17.2 up to and including 17.5 (of which one specimen for
the test in 17.2 and the other for the tests in 17.4 and 17.5);
– one pair or one specimen: 17.6 and Clause 18.
In the case of flexible and inflexible lampholders G5, GX5 or G13 (see Definitions 2.3 and 2.4
respectively), the specimens are mounted on two pairs of mounting sheets as specified in
Figure 2.
One pair of holders is mounted so as to represent the minimum mounting distance for this pair
of holders according to the manufacturer's mounting instructions; the other pair is mounted at
the maximum distance. The matching mounting sheets are marked.
In special cases, it may be necessary to test more than the number of specimens specified
above.
Together with these specimens, the manufacturer's mounting instructions (see 7.3) shall be
supplied.
For holders intended to provide an IP classification greater than IP20 with detachable gaskets
having a maximum operating temperature different from the values in 17.1, an additional set of
gaskets shall be supplied with the specimen, together with information on their maximum
operating temperature (this is part of the manufacturer's mounting instructions).
NOTE This does not refer to detachable gaskets on the mounting surface of the holder (see 17.1).
4.5 Holders are deemed to comply with this standard if no specimen fails in the complete
series of tests specified in 4.4.
If one specimen fails in one test, that test and the preceding ones which may have influenced
the result of that test are repeated on another set of specimens to the number required in 4.4,
all specimens of which shall then comply with the repeated tests and with the subsequent tests.

– 12 – 60400  IEC:2008+A1:2011
Holders are deemed not to comply with this standard if there are more failures than that of one
specimen in one of the tests.
NOTE In general, it will only be necessary to repeat the relevant test, unless the specimen fails in the tests
according to Clause 13 or 14, in which case the tests must be repeated from the test according to Clause 12
onwards.
A second type test sample, which may be required should one specimen fail, may be submitted together with the
first sample.
If the additional type test sample is not submitted at the same time, a failure of one specimen entails a rejection.
5 Electrical rating
The electrical rating shall be:
– not less than 125 V and not more than 1 000 V a.c. r.m.s.;
– not less than 1 A;
– not less than 2 A for lampholders GX5, G13, 2G8, 2G13, G20, Fa6, Fa8 and R17d.
NOTE In countries where marking of rated wattage is required in place of rated current, the rating of the G5
lampholder should be not less than 75 W.
6 Classification
Holders are classified as follows.
6.1 According to protection against electric shock:
– unenclosed holders;
– enclosed holders;
– independent holders.
– unenclosed lampholders;
– enclosed lampholders;
– independent lampholders;
– partly reinforced insulated lampholders;
– enclosed reinforced insulated lampholders.
NOTE Where a lampholder is used with a working voltage of 50 % or less of its maximum rating, it may be
regarded as equivalent to a reinforced insulated lampholder.
6.2 According to the degree of protection against ingress of dust or water in accordance with
the system of classification (IP Code) explained in IEC 60529.
Symbols for the degrees of protection are given in 7.4 (independent and enclosed holders
only).
6.3 According to the resistance to heat:
– holders for rated operating temperatures up to and including 80 °C;
– holders for rated operating temperatures over 80 °C.
NOTE The measuring point for the operating temperature is that area of the lampholder where it touches the
lamp cap.
60400  IEC:2008+A1:2011 – 13 –
6.4 Moreover, starterholders are classified according to the possibility of accepting different
types of starters:
– starterholders intended for starters according to IEC 60155;
– starterholders intended for starters according to IEC 60155, Annex B only.
7 Marking
7.1 Holders shall be marked with the following:
a) mark of origin (this may take the form of a trade mark, a manufacturer's identification
mark or the name of the responsible vendor);
b) type reference;
NOTE Available technical documentation of the manufacturer like printed catalogues or online catalogues should
allow a clear identification of a lampholder either by a unique catalogue number or by an identifying reference on
the holder, specifying the essential characteristic features and the basic design of the product supplemented by a
clear description. Variations of the basic design like for example different cable length, fixing means, colours etc.,
which do not affect safety or performance of the lampholder, may be disregarded in the type reference marked on
the product. Variations included in the type testing procedure are listed in the corresponding test reports.
c) rated voltage, in volts and rated pulse voltage, in kilovolts, if applicable;
NOTE For holders where, during dimming, i.e. reduction of the load, exceeding of the marked voltage rating is
permissible (increased creepage distances and clearances), the maximum allowed value under these
operating conditions should be given in the manufacturer's catalogue or the like (for example, maximum dimming
voltage: .V).
d) rated current, in amperes (see note to Clause 5);
e) rated operating temperature T if greater than 80 °C, in steps of 10 °C;
f) degree of protection against ingress of dust and water, for drip-proof holders only
(see 7.4);
Marking of IP20 on ordinary holders is not required;
g) for holders protected against dust and moisture, the holder manufacturer shall indicate
in his instructions the nominal diameter of the lamp(s) or starter for which the holder is
intended.
Compliance is checked by inspection.
7.2 The following information, if applicable, shall either be given on the holder, or be made
available in the manufacturer's catalogue or the like:
– the temperature T for the rearside of the holder, for holders tested according to item b)
m
in 17.1;
– the temperature measured for the screwless terminals, for holders tested according to
item b) in 17.1;
– a declaration in conformity with 9.3 of the cross-section of the conductor(s) for which
the holder terminals are suitable.
Compliance is checked by inspection.
For lampholders according to this standard, the distances for impulse withstand category II are
applicable. This information shall be indicated in the manufacturer's catalogue or the like.
Lampholders or starterholders complying with the electrical strength test for double or
reinforced insulation and having creepage distances and clearances equivalent to double or
reinforced insulation offer an adequate level of protection for the use in luminaires where they
are accessible in normal use. Such lampholders are addressed as lampholders for use in class
II applications. This information shall be indicated in the manufacturer’s catalogue or the like.

– 14 – 60400  IEC:2008+A1:2011
NOTE Values for creepage distances and clearances as well as test voltages for the electrical strength test for
double or reinforced insulation are given in IEC 60598-1.
To achieve sufficient creepage distances and clearances to outer accessible surfaces,
additional attachments could be used. In some cases, these dimensions might be achieved
only after mounting the lampholder in the luminaire. Relevant information should be provided in
the manufacturer’s catalogue or the like.
Enclosed reinforced insulated lampholders offer an adequate level of protection for use in
luminaires where they are accessible in normal use. This information shall be indicated in the
manufacturer’s catalogue ore the like.
For partly reinforced insulated lampholders, sufficient creepage distances and clearances to
outer accessible surfaces will require additional protection to some parts of the lampholder by
the luminaire design or by use of additional attachment(s) or cover(s). This information shall be
indicated in the manufacturer’s catalogue or the like.
7.3 The instructions supplied by the holder manufacturer or responsible vendor in order to
ensure correct mounting and operation of a pair of holders for linear double-capped fluorescent
lamps shall contain at least the following information:
– method of mounting. For flexibly mounted holders, it shall be clearly stated whether both
or only one of the methods of mounting is intended;
– mounting distance, with tolerance or reference to standard sheets;
– which holders shall be used as a pair;
– allowable angle of displacement of the pair of holders;
– required mounting plate thickness, if the holder is designed for screwless mounting.
The above information may be part of the manufacturer's or responsible vendor's catalogue.
Compliance is checked by inspection.
7.4 If sym
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