IEC 60838-2-3:2016
(Main)Miscellaneous lampholders - Part 2-3: Particular requirements - Lampholders for double-capped linear LED lamps
Miscellaneous lampholders - Part 2-3: Particular requirements - Lampholders for double-capped linear LED lamps
IEC 60838-2-3:2016 applies to lampholders for double-capped linear LED lamps intended for building-in (to be used for general lighting service and with caps as listed in Annex A). Lampholders within the scope of this standard do not include heat management. Double-capped linear LED lamps can also be used with lampholders originally been designated for other technologies. The requirements for these lampholders are covered by separate standards.
This publication is to be read in conjunction with IEC 60838-1.
Douilles diverses pour lampes - Partie 2-3: Exigences particulières - Douilles pour lampes LED linéaires à deux culots
L'IEC 60838-2-3:2016 s'applique aux douilles pour lampes LED (Light-emitting diode - Diode électroluminescente) linéaires à deux culots prévues pour être incorporées (destinées à l'éclairage général et possédant les culots figurant à l'Annexe A). Les douilles relevant du domaine d'application de la présente norme n'incluent pas la gestion de la chaleur. Les lampes LED linéaires à deux culots peuvent également être utilisées avec des douilles initialement destinées à d'autres technologies. Les exigences relatives à ces douilles font l'objet de normes distinctes.
Cette publication doit être lue conjointement avec l'IEC 60838-1.
General Information
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Standards Content (Sample)
IEC 60838-2-3 ®
Edition 1.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Miscellaneous lampholders –
Part 2-3: Particular requirements – Lampholders for double-capped linear LED
lamps
Douilles diverses pour lampes –
Partie 2-3: Exigences particulières – Douilles pour lampes LED linéaires à deux
culots
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IEC 60838-2-3 ®
Edition 1.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Miscellaneous lampholders –
Part 2-3: Particular requirements – Lampholders for double-capped linear LED
lamps
Douilles diverses pour lampes –
Partie 2-3: Exigences particulières – Douilles pour lampes LED linéaires à deux
culots
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.10 ISBN 978-2-8322-3357-3
– 2 – IEC 60838-2-3:2016 © IEC 2016
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references. 5
3 Terms and definitions . 5
4 General requirements . 6
5 General conditions for tests . 6
6 Classification . 9
7 Marking . 9
8 Protection against electric shock . 10
9 Terminals . 10
10 Provision for earthing . 10
11 Construction . 10
12 Moisture resistance, insulation resistance and electric strength . 13
13 Mechanical strength . 13
14 Screws, current-carrying parts and connections . 13
15 Creepage distances and clearances . 13
16 Endurance . 13
17 Resistance to heat and fire . 13
18 Resistance to excessive residual stresses (season cracking) and to rusting . 13
Annex A (normative) Lampholders covered by this standard . 14
Annex B (normative) Test probes for checking gasket sleeves on lampholders for
higher IP protection . 15
Annex C (informative) Explanatory details for the installation of lampholders according
to 11.1 . 16
Bibliography . 17
Figure 1 – Mounting sheet . 7
Figure 2 – Fixture for the testing of lampholder flexibility . 8
Figure 3 – Test cap GX16t-5 . 9
Figure 4 – Mounting jig for the testing of lampholders . 12
Figure B.1 – Test probes for checking gasket sleeves . 15
Figure C.1 – Examples of lampholders . 16
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MISCELLANEOUS LAMPHOLDERS –
Part 2-3: Particular requirements –
Lampholders for double-capped linear LED lamps
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
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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.
International Standard IEC 60838-2-3 has been prepared by subcommittee 34B: Lamp caps
and holders, of IEC technical committee 34: Lamps and related equipment.
The text of this standard is based on the following documents:
FDIS Report on voting
34B/1851/FDIS 34B/1857/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
– 4 – IEC 60838-2-3:2016 © IEC 2016
This Part 2-3 is to be used in conjunction with the latest edition of IEC 60838-1 and its
amendments. It was established on the basis of the fifth edition (2016) of that standard.
A list of all parts in the IEC 60838 series, published under the general title Miscellaneous
lampholders, can be found on the IEC website.
In this standard the following print types are used:
– test specifications and compliance statements: in italic type;
– NOTES: in small roman type.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website 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.
MISCELLANEOUS LAMPHOLDERS –
Part 2-3: Particular requirements –
Lampholders for double-capped linear LED lamps
1 Scope
This part of IEC 60838-2 applies to lampholders for double-capped linear LED lamps intended
for building-in (to be used for general lighting service and with caps as listed in Annex A).
Lampholders within the scope of this standard do not include heat management.
Double-capped linear LED lamps can also be used with lampholders originally been
designated for other technologies. The requirementsfor these lampholders are covered by
separate standards.
2 Normative references
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.
Clause 2 of IEC 60838-1 applies, together with the following additions.
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 60838-1, Miscellaneous lamp holders – Part 1: General requirements and tests
IEC 62504, General lighting – Light emitting diode (LED) products and related equipment –
Terms and definitions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60838-1 and in
IEC 62504, as well as the following apply.
3.1
independent lampholder
lampholder so designed that it can be mounted separately from a luminaire, while at the same
time providing all the necessary protection according to its classification and marking
[SOURCE: IEC 60238:2004, 2.5]
3.2
flexible lampholder for linear double-capped LED lamp
flexible lampholder
lampholder 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
– 6 – IEC 60838-2-3:2016 © IEC 2016
Note 1 to entry: This note applies to the French language only.
[SOURCE: IEC 60400:2008 and IEC 60400:2008/AMD1:2011, 2.3, modified]
3.3
inflexible lampholder for linear double-capped LED lamp
inflexible lampholder
lampholder 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
[SOURCE: IEC 60400:2008, 2.4, modified]
3.4
flexibly mounted lampholder for linear double-capped LED lamp
flexibly mounted lampholder
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
[SOURCE: IEC 60400:2008, 2.5, modified]
4 General requirements
The requirements of Clause 4 of IEC 60838-1 apply.
5 General conditions for tests
The requirements of Clause 5 of IEC 60838-1 apply together with the following additions.
5.1 In the case of flexible and inflexible lampholders (see 3.2 and 3.3 respectively), the
specimens are mounted on two pairs of mounting sheets as specified in Figure 1.
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.
Together with these specimens, the manufacturer's mounting instructions (see 8.1) shall be
supplied.
Material: Steel
P
R
a
Stop side
S
Holder cut-out centred to this line
IEC
Key
a
This side shall be marked.
For holders requiring a vertical mounting surface, a steel angle shall be added to the mounting sheet.
When applying a force of 50 N to this angle in the height and in the direction of the lampholder axis, the lampholder
shall not deviate by more than 0,2 mm from its original position.
The drawing is intended only to illustrate the essential dimensions of the mounting sheet.
Dimension Tolerance
Reference
mm mm
P 70 ±0,1
Q 60
±0,1
R 2 ±0,5
b
S 1,0
±0,05
b
If the holder is designed for a lower material thickness, only the area required
for the mounting of the holder is reduced to this specific value.
Figure 1 – Mounting sheet
In case of doubt as to whether a lampholder GX16t-5 provides the required axial movement of
the contacts, a test with the device shown in Figure 2 may be carried out.
Q
– 8 – IEC 60838-2-3:2016 © IEC 2016
a
Test cap (see Figure 3)
Specified plunger travel
Direction of
test force
Fixture frame
Support Clambing jaws, overlapping on
mounting sheet 10 mm
Mounting sheet (see Figure 1)
IEC
Key
The fixture shown is intended for testing single lampholders. For testing twin-lampholders, modifications will be
necessary.
PURPOSE: To check, in case of doubt, whether the lampholder shall be considered as a flexible or an inflexible
one.
TESTING: The holder, mounted on the mounting sheet, is placed on the support and the test cap is inserted into
b
the holder. The mounting sheet is then moved in such a way that the test cap is fixed between holder and fixture
frame without clearance. In this position the mounting sheet is fixed by the use of the clamping jaws. A force is
a
applied via the plunger to the test cap until the specified plunger travel is achieved. The force required shall not
exceed 30 N for lampholders GX16t-5. This procedure is repeated 10 times.
After this test, no clearance shall exist between test cap and fixture frame, nor between test cap and holder. If the
holder complies, it is deemed to be a flexible lampholder; if not it is an inflexible one.
a
The plunger travel is equal to the required minimum axial contact movement, which is:
– for a pair of holders: 3 mm (under consideration) + mounting tolerance, according to the manufacturer's
instructions (see 7.1 of IEC 60838-1).
If the combined pair of holders consists of two flexible holders, each holder has to provide half of the required
contact movement.
b
The relevant test caps are described in Figure 3.
Figure 2 – Fixture for the testing of lampholder flexibility
a
r
B
C
D
D1
A
IEC
Key
a
This part of the gauge and the cap pins shall be of hardened steel.
Reference Dimension Tolerance
mm mm
b
A 26,5 ±0,1
B 1,0
±0,02
C 4,0 ±0,02
D 16,00
±0,05
D1 20,0 ±0,05
F 7,31
±0,05
b
H 35,0
±0,1
b
r 0,5
+0,3
–0,0
b
These test caps differ from the test caps used in Clause 13 by the material and
the additional dimensions A, H and r.
Figure 3 – Test cap GX16t-5
6 Classification
The requirements of Clause 6 of IEC 60838-1 apply together with the following additions.
6.1 According to the flexibility for axial movement of lamp length:
– flexible lampholders;
– inflexible lampholders.
7 Marking
The requirements of Clause 7 of IEC 60838-1 apply together with the following additions.
F H
– 10 – IEC 60838-2-3:2016 © IEC 2016
7.1 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 LED
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;
NOTE A pair of flexible holders could consist of two holders each having a spring or one holder having a
spring and a second without a spring. The two methods of mounting are with and without a separate spring for
flexible mounting.
– mounting distance, with tolerance or reference to standard sheets;
– which holders shall be used as a pair;
– 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.
8 Protection against electric shock
The requirements of Clause 8 of IEC 60838-1 apply together with the following additions.
8.1 Protection against electric shock shall be ensured when a lamp is inserted into a
lampholder at an angle not greater than 5° from the axis of the normal inserted position of the
lamp.
Lampholders incorporating a rotating part shall be tested with this part in the position of
normal lamp insertion.
NOTE 1 For further information see Figure C.1 d).
Compliance is checked as follows:
– by means of the gauge B as per IEC 60061-3, standard sheet 7006-183B (Double
ended ”GO” gauges for a combined pair of lampholders) and the standard test finger
specified in IEC 60529.
NOTE 2 To prevent electrical contact between the test finger and the metal body of gauge II, the "cap" face of
the gauge is covered with insulating material, having a thickness not exceeding 0,1 mm.
9 Terminals
The requirements of Clause 9 of IEC 60838-1 apply.
10 Provision for earthing
The requirements of Clause 10 of IEC 60838-1 apply.
11 Construction
The requirements of Clause 11 of IEC 60838-1 apply together with the following additions.
11.1 In case of absence of any additional lamp support (e.g. gasket sleeves for IP rated
lampholders), only lampholder incorporating a rotating part are allowed, no side entry
lampholder is permitted. This requirement does not apply to single contact lampholders.
NOTE A side entry holder is a holder where the cap pins enter the insertion slot(s) of the holder in a direction
perpendicular to the lamp axis (parallel entry). For further information see Figures C.1 a), C.1 b) and C.1 c).
11.2 Lampholders shall be so constructed, that the seating position of the lamp is clearly
noticed when inserting the lamp.
Compliance is checked by inspection and by manual test.
11.3 Lampholders shall be so designed that adequate contact force is provided.
a) For bi-pin lampholders, making contact mainly along one side of each pin of the cap, the
contact force is measured with a single-ended gauge having dimensions and pin distances
according to standard sheet 7006-183C of IEC 60061-3, gauges E and G.
The contact force shall be between:
– 2 N and 30 N for lampholders not providing support to prevent bending of the lamp
pins;
– 2 N and 45 N for lampholders, when the lamp pins are supported by the holder
construction.
First the maximum contact force is measured with a pin distance as shown for gauge G.
This is followed by measurement of the minimum contact force with the pin distance of
gauge E.
b) For single-pin lampholders the contact force is measured with a single-ended gauge
having dimensions according to standard sheet 7006-183C of IEC 60061-3, gauges E and
G.
The contact force shall be between 2 N and 25 N.
c) For bi-pin lampholders the torque required for the insertion and removal of the lamp shall
be measured with single-ended gauges having pin dimensions and pin distances
according to standard sheet 7006-183C of IEC 60061-3 gauges G and F.
The torque required to insert the gauges until the position representing the operating
position of the lamp is reached, shall not exceed 0,5 Nm.
The torque required to clear the gauges from the normal seated position shall be between
0,1 Nm and 0,5 Nm.
During complete removal of the gauges, the maximum values shall not be exceeded.
During force and torque testing, care should be taken that the front face of the gauges is kept
parallel with the holder face.
As a preconditioning cycle, there shall be one clockwise and one anticlockwise rotation, or
one insertion and withdrawal routine of each test device, before the initial measurement is
taken.
11.4 Lampholders shall comply with the relevant standard sheets of IEC 60061-2 with regard
to the holder dimensions:
Compliance is checked as follows:
– With two pairs of matching holders mounted in the mounting jig shown in Figure 4 and by
use of the relevant “GO” gauges and the relevant gauges for testing contact-making.
– Lampholders which, due to their design, do not allow testing in the mounting jig, and
flexibly mounted lampholders (see 3.4) shall be tested together with the relevant luminaire
and by use of the relevant gauges adapted to the specific lamp length according to
standard sheet 7005-183 of IEC 60061-2.
When testing contact-making, the gauges are pushed in the direction of each of the holder
faces in turn with a force of 10 N. For holders with a limited mass of 500 g for the lamp, the
force is limited to 5 N.
– 12 – IEC 60838-2-3:2016 © IEC 2016
When testing in the mounting jig, this force can be achieved by vertical position of the gauge.
For lampholders intended for use with more than one lamp at the same time, additional mass
according to the number of lamps is placed on the lampholder face.
Bar pressing the mounting
Z
Stop
sheet against the stop
Base plate
a
Clamping jaws ; overlapping on mounting sheet: 10 mm
r
Fixing screws
Mounting sheet (see Figure 1)
p
IEC
Key
The drawing is intended only to illustrate the essential dimensions of the jig.
a
For certain lampholders, for example twin-lampholders, it may be necessary to use two-piece clamping jaws.
Dimension Tolerance
Reference
mm mm
b
Z ±0,05
p 65
±0,1
q 60,2 +0,1
–0,0
r 5 ±0,1
t 40
±0,1
b
Z = 589,9 mm for testing lampholders GX16t-5 (derived from dimension Amax of
a 14,5 W lamp, see IEC 62931).
PURPOSE: Testing of a combined pair of holders regarding compliance with the
specified "Go" gauges and those for testing contact-making.
TESTING: The mounting sheets with a matching pair of holders are inserted into
the mounting jig, pressed against the stop and fixed by use of the clamping jaws. In
this position, the gauges are applied.
Figure 4 – Mounting jig for the testing of lampholders
q
t
12 Moisture resistance, insulation resistance and electric strength
The requirements of Clause 12 of IEC 60838-1 apply together with the following additions.
12.1 In the case of holders provided with IP code marking, the enclosure shall provide the
degree of protection against dust or moisture in accordance with the classification of the
holders after installation.
Compliance is checked by testing in accordance with the relevant requirements of
IEC 60598-1 appropriate to the holder marking.
The insulation resistance and electric strength are checked in accordance with 12.2 of
IEC 60838-1 .
The holders are mounted as in normal use and fitted either with test probes of minimum and
maximum diameter according to Annex B for which the holders are designed, or, if available,
with lamps of the smallest and largest diameters as required by Annex B.
Before the tests, the holders are heated and brought to a stable operating temperature either
by operating the lamp or with the test probes by heating within the heating cabinet at a
temperature according to the T-marking of the holder.
NOTE This test is for type test approval of the lampholder only and does not replace luminaire testing.
13 Mechanical strength
The requirements of Clause 13 of IEC 60838-1 apply.
14 Screws, current-carrying parts and connections
The requirements of Clause 14 of IEC 60838-1 apply.
15 Creepage distances and clearances
The requirements of Clause 15 of IEC 60838-1 apply.
16 Endurance
The requirements of Clause 16 of IEC 60838-1 apply.
17 Resistance to heat and fire
The requirements of Clause 17 of IEC 60838-1 apply.
18 Resistance to excessive residual stresses (season cracking) and to rusting
The requirements of Clause 18 of IEC 60838-1 apply.
– 14 – IEC 60838-2-3:2016 © IEC 2016
Annex A
(normative)
Lampholders covered by this standard
Independent and built-in lampholders used with double-capped linear LED lamps provided
with the caps listed below are covered by this standard (see the scope).
Lampholder Lampholder sheet
(see IEC 60061-2)
GX16t-5 7005-183
...
IEC 60838-2-3 ®
Edition 1.1 2023-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Miscellaneous lampholders –
Part 2-3: Particular requirements – Lampholders for double-capped linear LED
lamps
Douilles diverses pour lampes –
Partie 2-3: Exigences particulières – Douilles pour lampes LED linéaires à deux
culots
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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IEC 60838-2-3 ®
Edition 1.1 2023-04
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Miscellaneous lampholders –
Part 2-3: Particular requirements – Lampholders for double-capped linear LED
lamps
Douilles diverses pour lampes –
Partie 2-3: Exigences particulières – Douilles pour lampes LED linéaires à deux
culots
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.10 ISBN 978-2-8322-6933-6
IEC 60838-2-3 ®
Edition 1.1 2023-04
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Miscellaneous lampholders –
Part 2-3: Particular requirements – Lampholders for double-capped linear LED
lamps
Douilles diverses pour lampes –
Partie 2-3: Exigences particulières – Douilles pour lampes LED linéaires à deux
culots
– 2 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 7
5 General conditions for tests . 7
5.1 GX16t-5 lampholders . 7
5.2 GJ6.6 lampholders . 10
6 Classification . 10
7 Marking . 11
8 Protection against electric shock . 11
8.1 GX16t-5 contact making during insertion . 11
8.2 GJ6.6 contact making during insertion . 11
9 Terminals . 12
10 Provision for earthing . 12
11 Construction . 12
11.1 Absence of lamp support . 12
11.2 Seating position . 12
11.3 Contact force . 12
11.3.1 Gx16t-5 lampholders . 12
11.3.2 GJ6.6 lampholders . 13
11.4 Holder dimensions . 13
11.4.1 General . 13
11.4.2 GX16t-5 lampholders . 13
11.4.3 GJ6.6 lampholders . 15
12 Moisture resistance, insulation resistance and electric strength . 15
13 Mechanical strength . 15
14 Screws, current-carrying parts and connections . 15
15 Creepage distances and clearances . 15
16 Endurance . 15
17 Resistance to heat and fire . 15
18 Resistance to excessive residual stresses (season cracking) and to rusting . 16
Annex A (normative) Lampholders covered by this standard . 17
Annex B (normative) Test probes for checking gasket sleeves on lampholders for
higher IP protection . 18
Annex C (informative) Explanatory details for the installation of lampholders according
to 11.1 . 19
Bibliography . 20
Figure 1 – Mounting sheet . 8
Figure 2 – Fixture for the testing of lampholder flexibility . 9
Figure 3 – Test cap GX16t-5 . 10
Figure 4 – Mounting jig for the testing of lampholders . 14
© IEC 2023
Figure B.1 – Test probes for checking gasket sleeves . 18
Figure C.1 – Examples of lampholders . 19
Table A.1 – Lampholders covered by this standard . 17
– 4 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MISCELLANEOUS LAMPHOLDERS –
Part 2-3: Particular requirements –
Lampholders for double-capped linear LED lamps
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 60838-2-3 edition 1.1 contains the first edition (2016-05) [documents 34B/1851/FDIS
and 34B/1857/RVD] and its amendment 1 (2023-04) [documents 34B/2150/CDV and
34B/2167/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red
text. A separate Final version with all changes accepted is available in this publication.
© IEC 2023
International Standard IEC 60838-2-3 has been prepared by subcommittee 34B: Lamp caps
and holders, of IEC technical committee 34: Lamps and related equipment.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-3 is to be used in conjunction with the latest edition of IEC 60838-1 and its
amendments. It was established on the basis of the fifth edition (2016) of that standard.
A list of all parts in the IEC 60838 series, published under the general title Miscellaneous
lampholders, can be found on the IEC website.
In this standard the following print types are used:
– test specifications and compliance statements: in italic type;
– NOTES: in small roman type.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under webstore.iec.ch
in the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
– 6 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
MISCELLANEOUS LAMPHOLDERS –
Part 2-3: Particular requirements –
Lampholders for double-capped linear LED lamps
1 Scope
This part of IEC 60838-2 applies to lampholders for double-capped linear LED lamps intended
for building-in (to be used for general lighting service and with caps as listed in Annex A).
Lampholders within the scope of this standard do not include heat management.
Double-capped linear LED lamps can also be used with lampholders originally been designated
for other technologies. The requirementsfor these lampholders are covered by separate
standards.
2 Normative references
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.
Clause 2 of IEC 60838-1 applies, together with the following additions.
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 60838-1, Miscellaneous lamp holders – Part 1: General requirements and tests
IEC 62504, General lighting – Light emitting diode (LED) products and related equipment –
Terms and definitions
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60838-1 and in
IEC 62504, as well as the following apply.
3.1
independent lampholder
lampholder so designed that it can be mounted separately from a luminaire, while at the same
time providing all the necessary protection according to its classification and marking
[SOURCE: IEC 60238:2004, 2.5]
© IEC 2023
3.2
flexible lampholder for linear double-capped LED lamp
flexible lampholder
lampholder 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
Note 1 to entry: This note applies to the French language only.
[SOURCE: IEC 60400:2008 and IEC 60400:2008/AMD1:2011, 2.3, modified]
3.3
inflexible lampholder for linear double-capped LED lamp
inflexible lampholder
lampholder 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
[SOURCE: IEC 60400:2008, 2.4, modified]
3.4
flexibly mounted lampholder for linear double-capped LED lamp
flexibly mounted lampholder
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
[SOURCE: IEC 60400:2008, 2.5, modified]
4 General requirements
The requirements of Clause 4 of IEC 60838-1 apply.
5 General conditions for tests
5.1 GX16t-5 lampholders
The requirements of Clause 5 of IEC 60838-1 apply together with the following additions.
5.1 In the case of flexible and inflexible lampholders (see 3.2 and 3.3 respectively), the
specimens are mounted on two pairs of mounting sheets as specified in Figure 1.
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.
Together with these specimens, the manufacturer's mounting instructions (see 8.1) shall be
supplied.
– 8 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
Material: Steel
P
R
a
Stop side
S
Holder cut-out centred to this line
IEC
Key
a
This side shall be marked.
For holders requiring a vertical mounting surface, a steel angle shall be added to the mounting sheet.
When applying a force of 50 N to this angle in the height and in the direction of the lampholder axis, the lampholder
shall not deviate by more than 0,2 mm from its original position.
The drawing is intended only to illustrate the essential dimensions of the mounting sheet.
Dimension Tolerance
Reference
mm mm
P 70 ±0,1
Q 60
±0,1
R 2 ±0,5
b
1,0
S ±0,05
b
If the holder is designed for a lower material thickness, only the area required for
the mounting of the holder is reduced to this specific value.
Figure 1 – Mounting sheet
In case of doubt as to whether a lampholder GX16t-5 provides the required axial movement of
the contacts, a test with the device shown in Figure 2 may be carried out.
Q
© IEC 2023
a
Test cap (see Figure 3)
Specified plunger travel
Direction of
test force
Fixture frame
Support Clambing jaws, overlapping on
mounting sheet 10 mm
Mounting sheet (see Figure 1)
IEC
Key
The fixture shown is intended for testing single lampholders. For testing twin-lampholders, modifications will be
necessary.
PURPOSE: To check, in case of doubt, whether the lampholder shall be considered as a flexible or an inflexible one.
TESTING: The holder, mounted on the mounting sheet, is placed on the support and the test cap is inserted into the
b
holder. The mounting sheet is then moved in such a way that the test cap is fixed between holder and fixture frame
without clearance. In this position the mounting sheet is fixed by the use of the clamping jaws. A force is applied via
a
the plunger to the test cap until the specified plunger travel is achieved. The force required shall not exceed 30 N
for lampholders GX16t-5. This procedure is repeated 10 times.
After this test, no clearance shall exist between test cap and fixture frame, nor between test cap and holder. If the
holder complies, it is deemed to be a flexible lampholder; if not it is an inflexible one.
a
The plunger travel is equal to the required minimum axial contact movement, which is:
– for a pair of holders: 3 mm (under consideration) + mounting tolerance, according to the manufacturer's
instructions (see 7.1 of IEC 60838-1).
If the combined pair of holders consists of two flexible holders, each holder has to provide half of the required contact
movement.
b
The relevant test caps are described in Figure 3.
Figure 2 – Fixture for the testing of lampholder flexibility
– 10 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
a
r
B
C
D
D1
A
IEC
Key
a
This part of the gauge and the cap pins shall be of hardened steel.
Reference Dimension Tolerance
mm mm
b
26,5 ±0,1
A
B 1,0
±0,02
C 4,0
±0,02
D 16,00 ±0,05
D1 20,0
±0,05
F 7,31 ±0,05
b
35,0
H ±0,1
b
0,5
r +0,3
–0,0
b
These test caps differ from the test caps used in Clause 13 by the material and
the additional dimensions A, H and r.
Figure 3 – Test cap GX16t-5
5.2 GJ6.6 lampholders
For a pair of GJ6.6 inflexible lampholders, the axial tolerances shall conform to IEC 60061-2,
sheet 7005-188-1 (Mounting distance of a combined pair of inflexible lampholders).
NOTE GJ6.6 lampholders are classified as inflexible (see 3.3).
6 Classification
The requirements of Clause 6 of IEC 60838-1 apply together with the following additions.
6.1 According to the flexibility for axial movement of lamp length:
– flexible lampholders;
– inflexible lampholders.
F H
© IEC 2023
7 Marking
The requirements of Clause 7 of IEC 60838-1 apply together with the following additions.
7.1 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 LED 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;
NOTE A pair of flexible holders could consist of two holders each having a spring or one holder having a spring
and a second without a spring. The two methods of mounting are with and without a separate spring for flexible
mounting.
– mounting distance, with tolerance or reference to standard sheets;
– which holders shall be used as a pair;
– 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.
8 Protection against electric shock
The requirements of Clause 8 of IEC 60838-1 apply together with the following additions.
8.1 GX16t-5 contact making during insertion
Protection against electric shock shall be ensured when a lamp is inserted into a lampholder at
an angle not greater than 5° from the axis of the normal inserted position of the lamp.
Lampholders incorporating a rotating part shall be tested with this part in the position of normal
lamp insertion.
NOTE 1 For further information see Figure C.1 d).
Compliance is checked as follows:
– by means of the gauge B as per IEC 60061-3, standard sheet 7006-183B (Double
ended ”GO” gauges for a combined pair of lampholders) and the standard test finger
specified in IEC 60529.
NOTE 2 To prevent electrical contact between the test finger and the metal body of gauge II, the "cap" face of
the gauge is covered with insulating material, having a thickness not exceeding 0,1 mm.
8.2 GJ6.6 contact making during insertion
GJ6.6t, GJ6.6d-1 and GJ6.6d-2 lampholders shall provide protection against electric shock
during the lamp insertion to the holder.
Compliance is checked by measurement or by using the contact making test gauge for holders
specified in IEC 60061-3, sheet 7006-188-X.
NOTE 1 GJ6.6 lamps are inserted by snapping into the lampholder. The orientation is mechanically ensured prior
to making electrical contact. Mechanical protection against electric shock is provided by inaccessible electrical
contacts.
NOTE 2 The IEC 60061-3 gauges for GJ6.6 fits are under development.
– 12 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
9 Terminals
The requirements of Clause 9 of IEC 60838-1 apply.
10 Provision for earthing
The requirements of Clause 10 of IEC 60838-1 apply.
11 Construction
The requirements of Clause 11 of IEC 60838-1 apply together with the following additions.
11.1 Absence of lamp support
In case of absence of any additional lamp support (e.g. gasket sleeves for IP rated
lampholders), only lampholder incorporating a rotating part are allowed, no side entry
lampholder is permitted. This requirement does not apply to single contact lampholders.
NOTE 1 A side entry holder is a holder where the cap pins enter the insertion slot(s) of the holder in a direction
perpendicular to the lamp axis (parallel entry). For further information see Figures C.1 a), C.1 b) and C.1 c).
NOTE 2 GJ6.6 lampholders provide additional lamp support inherently by incorporating a closure of the holder to
the lamp cap. The lampholder is side entry from the lamp axis perspective but the cap pins are axial entry into the
holder.
11.2 Seating position
Lampholders shall be so constructed, that the seating position of the lamp is clearly noticed
when inserting the lamp.
Compliance is checked by inspection and by manual test.
11.3 Contact force
11.3.1 Gx16t-5 lampholders
Lampholders shall be so designed that adequate contact force is provided.
a) For bi-pin lampholders, making contact mainly along one side of each pin of the cap, the
contact force is measured with a single-ended gauge having dimensions and pin distances
according to standard sheet 7006-183C of IEC 60061-3, gauges E and G.
The contact force shall be between:
– 2 N and 30 N for lampholders not providing support to prevent bending of the lamp pins;
– 2 N and 45 N for lampholders, when the lamp pins are supported by the holder
construction.
First the maximum contact force is measured with a pin distance as shown for gauge G.
This is followed by measurement of the minimum contact force with the pin distance of
gauge E.
b) For single-pin lampholders the contact force is measured with a single-ended gauge having
dimensions according to standard sheet 7006-183C of IEC 60061-3, gauges E and G.
The contact force shall be between 2 N and 25 N.
c) For bi-pin lampholders the torque required for the insertion and removal of the lamp shall
be measured with single-ended gauges having pin dimensions and pin distances according
to standard sheet 7006-183C of IEC 60061-3 gauges G and F.
The torque required to insert the gauges until the position representing the operating
position of the lamp is reached, shall not exceed 0,5 Nm.
© IEC 2023
The torque required to clear the gauges from the normal seated position shall be between
0,1 Nm and 0,5 Nm.
During complete removal of the gauges, the maximum values shall not be exceeded.
During force and torque testing, care should be taken that the front face of the gauges is
kept parallel with the holder face.
As a preconditioning cycle, there shall be one clockwise and one anticlockwise rotation, or
one insertion and withdrawal routine of each test device, before the initial measurement is
taken.
11.3.2 GJ6.6 lampholders
Lampholders shall be so designed that adequate contact force is provided.
Adequate contact force is tested for GJ6.6 lampholders by two gauges:
• retention force gauge for GJ6.6 lampholders;
• contact making test gauge for GJ6.6 holders.
Compliance is checked by measurement or passing both of the following IEC 60061-3 gauge
test procedures:
• gauge sheet 7006-188-X, retention force gauge for GJ6.6 lampholders;
• gauge sheet 7006-188-X, contact making test gauge for GJ6.6 holders.
NOTE The IEC 60061-3 gauges for GJ6.6 fits are under development.
11.4 Holder dimensions
11.4.1 General
Lampholders shall comply with the relevant standard sheets of IEC 60061-2 with regard to the
holder dimensions:.
11.4.2 GX16t-5 lampholders
Compliance is checked as follows:
– With two pairs of matching holders mounted in the mounting jig shown in Figure 4 and by
use of the relevant "GO" gauges and the relevant gauges for testing contact-making.
– Lampholders which, due to their design, do not allow testing in the mounting jig, and flexibly
mounted lampholders (see 3.4) shall be tested together with the relevant luminaire and by
use of the relevant gauges adapted to the specific lamp length according to standard sheet
7005-183 of IEC 60061-2.
When testing contact-making, the gauges are pushed in the direction of each of the holder faces
in turn with a force of 10 N. For holders with a limited mass of 500 g for the lamp, the force is
limited to 5 N.
When testing in the mounting jig, this force can be achieved by vertical position of the gauge.
For lampholders intended for use with more than one lamp at the same time, additional mass
according to the number of lamps is placed on the lampholder face.
– 14 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
Key
The drawing is intended only to illustrate the essential dimensions of the jig.
a
For certain lampholders, for example twin-lampholders, it may be necessary to use two-piece clamping jaws.
Reference Dimension Tolérance
mm mm
b
Z
±0,05
p 65
±0,1
q 60,2
+0,1
–0,0
r 5
±0,1
t 40 ±0,1
b
Z = 589,9 mm for testing lampholders GX16t-5 (derived from dimension A of
max
a 14,5 W lamp, see IEC 62931).
PURPOSE: Testing of a combined pair of holders regarding compliance with the
specified "Go" gauges and those for testing contact-making.
TESTING: The mounting sheets with a pair of matching pair of holders are inserted
into the mouting jig, pressed against the stop and fixed by use of the clamping jaws.
In this position, the gauges are applied.
Figure 4 – Mounting jig for the testing of lampholders
© IEC 2023
11.4.3 GJ6.6 lampholders
Dimensional compliance of GJ6.6 lampholders to the specifications in IEC 60061-2 is checked
by measurement or by the following gauges specified in IEC 60061-3:
• gauge sheet 7006-188-X, contact making test gauge for GJ6.6 holders;
• gauge sheet 7006-188-X, hole locator "GO" gauge for GJ6.6 holders.
NOTE The IEC 60061-3 gauges for GJ6.6 fits are under development.
12 Moisture resistance, insulation resistance and electric strength
The requirements of Clause 12 of IEC 60838-1 apply together with the following additions.
12.1 In the case of holders provided with IP code marking, the enclosure shall provide the
degree of protection against dust or moisture in accordance with the classification of the holders
after installation.
Compliance is checked by testing in accordance with the relevant requirements of IEC 60598-1
appropriate to the holder marking.
The insulation resistance and electric strength are checked in accordance with 12.2 of
IEC 60838-1 .
The holders are mounted as in normal use and fitted either with test probes of minimum and
maximum diameter according to Annex B for which the holders are designed, or, if available,
with lamps of the smallest and largest diameters as required by Annex B.
Before the tests, the holders are heated and brought to a stable operating temperature either
by operating the lamp or with the test probes by heating within the heating cabinet at a
temperature according to the T-marking of the holder.
NOTE This test is for type test approval of the lampholder only and does not replace luminaire testing.
13 Mechanical strength
The requirements of Clause 13 of IEC 60838-1 apply.
14 Screws, current-carrying parts and connections
The requirements of Clause 14 of IEC 60838-1 apply.
15 Creepage distances and clearances
The requirements of Clause 15 of IEC 60838-1 apply.
16 Endurance
The requirements of Clause 16 of IEC 60838-1 apply.
17 Resistance to heat and fire
The requirements of Clause 17 of IEC 60838-1 apply.
– 16 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
18 Resistance to excessive residual stresses (season cracking) and to rusting
The requirements of Clause 18 of IEC 60838-1 apply.
© IEC 2023
Annex A
(normative)
Lampholders covered by this standard
Independent and built-in lampholders used with double-capped linear LED lamps provided with
the caps listed below in Table A.1 are covered by this standard (see the scope).
Table A.1 – Lampholders covered by this standard
Lampholder Lampholder sheet
(see IEC 60061-2)
GX16t-5 7005-183
GJ6.6t 7005-188
GJ6.6d-1 7005-188
GJ6.6d-2 7005-188
GJ6.6 7005-188
– 18 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
Annex B
(normative)
Test probes for checking gasket sleeves on lampholders
for higher IP protection
R
A1
Marking
A2
R
IEC
Key
b c
Dimension for nominal lamp diameter
Reference Tolerance
16 26 28 32 38
A1
+0,01
16,7 26,5 29,5 34,0 39,0
-0,01
A2 +0,01
15,3 24,5 26,5 31,0 36,0
-0,01
a
N 15 nominal
R
+0,1
0,5
-0,1
a
This part of the gauge shall not be used for sealing checking as in this area the
glass tube of the lamp is not defined in shape and tolerance. The test probe has
to be fully inserted into the holder and the sealing position shall not be within
dimension N
b
Values for other nominal diameters are under consideration.
c
Coated lamps, for example fragment retention lamps, may need other
dimensions.
The table does not lay claim to be exhaustive. In different countries, other tube
diameters may be permissible. The table may be amended based on information
received from different countries.
Surface finish: Ra = 0,4 µm
Figure B.1 – Test probes for checking gasket sleeves
a a
N N
© IEC 2023
Annex C
(informative)
Explanatory details for the installation of lampholders according to 11.1
IEC
IEC
a) b)
IEC IEC
c) d)
Figure C.1 – Examples of lampholders
– 20 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
Bibliography
IEC 60400:2008, Lampholders for tubular fluorescent lamps and starterholders
IEC 60400:2008/AMD1:2011
IEC 60400:2008/AMD2:2014
IEC 62931, GX16t-5 capped tubular led lamp – Safety specification
___________
_____________
Under consideration.
– 22 – IEC 60838-2-3:2016+AMD1:2023 CSV
© IEC 2023
SOMMAIRE
AVANT-PROPOS . 24
1 Domaine d'application . 26
2 Références normatives . 26
3 Termes et définitions . 26
4 Exigences générales . 27
5 Généralités sur les essais. 27
5.1 Douilles GX16t-5 . 27
5.2 Douilles GJ6.6 . 30
6 Classification . 30
7 Marquage . 31
8 Protection contre les chocs électriques . 31
8.1 Établissement du contact de la douille Gx16t-5 en cours d’insertion . 31
8.2 Établissement du contact de la douille GJ6.6 en cours d’insertion . 31
9 Bornes . 32
10 Dispositions de mise à la terre . 32
11 Construction . 32
11.1 Absence de support de lampe . 32
11.2 Position d'appui . 32
11.3 Force de contact . 32
11.3.1 Douilles Gx16t-5 . 32
11.3.2 Douilles GJ6.6 . 33
11.4 Dimensions des douilles . 33
11.4.1 Généralités . 33
11.4.2 Douilles GX16t-5 . 33
11.4.3 Douilles GJ6.6 . 35
12 Résistance à l'humidité, résistance d'isolement et rigidité diélectrique . 36
13 Résistance mécanique . 36
14 Vis, pièces conductrices et connexions . 36
15 Lignes de fuite et distance d'isolement . 36
16 Endurance . 36
17 Résistance à la chaleur et au feu . 36
18 Résistance aux contraintes résiduelles excessives (fissuration intercristalline) et à
la rouille . 37
Annexe A (normative) Douilles couvertes par la présente norme . 38
Annexe B (normative) Sondes d'essai pour le contrôle des manchons d'étanchéité sur
les douilles pour une protection IP plus élevée . 39
Annexe C (informative) Détails explicatifs pour l'installation de douilles selon 11.1 . 40
Bibliographie . 41
Figure 1 – Plaque de montage . 28
Figure 2 – Dispositif d'essai pour déterminer la flexibilité d'une douille . 29
Figure 3 – Culot d'essai GX16t-5 . 30
Figure 4 – Gabarit-support de montage pour l'essai des douilles . 35
© IEC 2023
Figure B.1 – Sondes d'essai pour le contrôle des manchons d'étanchéité . 39
Figure C.1 – Exemples de douilles . 40
Tableau A.1 – Douilles couvertes par la présente norme . 38
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