IEC 62031:2008/AMD1:2012

IEC 62031 ®
Edition 1.0 2012-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AMENDMENT 1
AMENDEMENT 1
LED modules for general lighting – Safety specifications

Modules de DEL pour éclairage général – Spécifications de sécurité

IEC 62031:2008/A1:2012
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IEC 62031 ®
Edition 1.0 2012-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
AMENDMENT 1
AMENDEMENT 1
LED modules for general lighting – Safety specifications

Modules de DEL pour éclairage général – Spécifications de sécurité

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX H
ICS 29.140.99; 31.080.99 ISBN 978-2-83220-471-9

– 2 – 62031 Amend. 1  IEC:2012

FOREWORD
This amendment has been prepared by subcommittee 34A: Lamps, of IEC technical

committee 34: Lamps and related equipment.

The text of this amendment is based on the following documents:

FDIS Report on voting
34A/1608/FDIS 34A/1628/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this publication 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• withdrawn,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 document using a
colour printer.
_____________
2 Normative references
Replace the reference to IEC 60598-1:2003 with the following:

IEC 60598-1, Luminaires – Part 1: General requirements and tests
Add the following new reference:
IEC 60417, Graphical symbols for use on equipment. Available at http://www.graphical-
symbols.info/equipment
3 Terms and definitions
Add the following new definitions:

62031 Amend. 1  IEC:2012 – 3 –

3.11
heat transfer temperature
t
d
temperature occurring on a representative part of the LED module (or any heat-conducting foil

or paste applied as for insertion if delivered with the LED module) (at the indicated position if

marked) intended for the passing of heat to the lampholder or to other parts of the luminaire
under normal operating conditions and at the rated voltage/current/power or the maximum of
the rated voltage/current/power range

NOTE A measurement method is under consideration.

3.12
heat output to the luminaire
P
d
power to be transferred to the luminaire by means of heat-conduction in order to keep t
c
NOTE 1 P is below the rated power of an LED module.
d
NOTE 2 For LED modules which do not need heat-conduction to the luminaire for keeping t , P is equal to zero.
c d
NOTE 3 A measurement method is under consideration.
4 General requirements
Replace 4.5 by the following:
4.5 In addition, independent modules shall comply with the requirements of IEC 60598-1,
including marking requirements of that standard such as IP classification and mechanical
stress.
7 Marking
7.1 Mandatory marking for built-in or independent modules
Replace existing item c) by the following:
c)
1) If the LED module requires a stable voltage(s), the rated supply voltage or voltage
range, both together with the supply frequency shall be marked. Marking of the rated
supply current(s) is voluntary.
2) If the LED module requires a stable current, the rated supply current(s) or current
range, both together with the supply frequency shall be marked. Marking of the rated

supply voltage(s) is voluntary.
Replace existing item h) with the following new item h) and new Figure 1:
h) Built-in modules shall be marked with the symbol according to Figure 1 in order to
separate them from independent modules. The mark shall be located on the packaging or
on the LED module itself.
– 4 – 62031 Amend. 1  IEC:2012

Source: IEC 60417-6053 (2011-05)
Figure 1 – Symbol for built-in LED modules

Add, after new item h) and the new Figure 1, the following new items i), j) and k):
i) The heat transfer temperature t (if the LED module is provided with a cap enabling the
d
insertion and the withdrawal without the use of tools and reliant on heat-conduction to the
luminaire).
j) The power for heat-conduction P (if the LED module is provided with a cap enabling the
d
insertion and the withdrawal without the use of tools and reliant on heat-conduction to the
luminaire). If P is not known exactly, the rated power of the LED module may be taken
d
instead.
k) Working voltage at which the insulation is designed.
Delete the NOTE.
7.2 Location of marking
nd
Replace the 2 paragraph with the following:
Items d), e), g), h), i) and j) shall be marked legibly on the LED module or on the LED module
data sheet. Item k) should be in the manufacturer's literature.
7.3 Durability and legibility of marking
th
Replace the 4 paragraph with the following:
For items d) to j) of 7.1, compliance is checked by inspection.

13 Fault conditions
13.2 Overpower condition
Replace the 2nd paragraph with the following:
The LED module shall be switched on and the power monitored (at the input side). The
voltage or the current shall be increased until 150 % of the rated power is reached. The test
shall be continued until the LED module is thermally stabilised. A stable condition is reached,
if the temperature does not change by more than 5 K in 1 h. The temperature shall be
measured in the t point. The LED module shall withstand the overpower condition for at least
c
15 min, the time period of which can lie within the stabilisation period if the temperature
change is ≤ 5K.
62031 Amend. 1  IEC:2012 – 5 –

19 Resistance to corrosion
Add, after Clause 19, the following new Clauses 20 and 21:

20 Information for luminaire design

Information is given in Annex D.

21 Heat management
21.1 General
Clause 21 is applicable for exchangeable modules. It is not applicable for non-exchangeable
modules. Exchangeability is safeguarded by means of a cap or base and a lampholder.
Precondition is that a heat conducting thermal interface to the luminaire is needed for keeping
the temperature below the rated maximum temperature t .
c
21.2 Heat-conducting foil and paste
For the purpose of heat-transfer from the LED module to the luminaire, the use of a heat-
conducting foil can be necessary. Any heat-conducting foil shall be delivered within the LED
module packaging.
Heat-conducting paste shall not be used (under consideration).
21.3 Heat protection (under consideration)
LED modules shall be equipped with a device that cuts the power off or reduces it when t is
c
exceeded.
21.4 Construction
The heat-conduction from the LED module to the luminaire, the electrical connection and the
mechanical holding in the cap/holder system should be separate unless the contrary is proven
safe (under consideration).
Add, after the existing Annex C, the following new Annex D:

– 6 – 62031 Amend. 1  IEC:2012

Annex D
(informative)
Information for luminaire design

D.1 General
This annex applies for LED modules that:

• have a cap/base enabling the insertion and the withdrawal of the LED module with or
without the use of tools,
• do not have a heat management on board and rather rely on heat-conduction to the
luminaire for safe operation.
This annex covers only those provisions that are related to the thermal needs specific for
these LED modules.
NOTE Because of their non-interchangeability, integral LED modules are excluded. Because independent LED
modules are luminaire-like, not needing protection or else from a luminaire neither using a lampholder, they
provide for their own heat management and are excluded. Only built-in LED modules remain within the scope of
this annex.
For safe operation of these LED modules, it is essential to observe the recommendations of
this annex.
D.2 Design freedom
A diagrammatic cross section of an LED module fixed by means of a lampholder to a
luminaire with the locations for temperature measurements (t , t , t , t and t ) and thermal
a c d j l
resistances (R , R and R ) is given with Figure D.1.
th, module th, luminaire th, ambient

62031 Amend. 1  IEC:20
...