IEC PAS 62717:2011

LED modules for general lighting - Performance requirements

IEC/PAS 62717:2011(E) specifies the performance requirements for LED modules, together with the test methods and conditions, required to show compliance with this PAS.

General Information

• Status: Replaced
• Publication Date: 27-Apr-2011
• ICS: 29.140.99 - Other standards related to lamps
• Technical Committee: SC 34A - Electric light sources
• Drafting Committee: WG 6 - TC 34/SC 34A/WG 6
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 16-Dec-2014

Relations

• Replaced By: IEC 62717:2014 - LED modules for general lighting - Performance requirements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC/PAS 62717
®

Edition 1.0 2011-04
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
colour
inside

LED modules for general lighting – Performance requirements



IEC/PAS 62717:2011(E)

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THIS PUBLICATION IS COPYRIGHT PROTECTED
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IEC/PAS 62717
®

Edition 1.0 2011-04
PUBLICLY AVAILABLE
SPECIFICATION

PRE-STANDARD
colour
inside

LED modules for general lighting – Performance requirements


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
X
ICS 29.140.99 ISBN 978-2-88912-476-3

® Registered trademark of the International Electrotechnical Commission

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– 2 – PAS 62717  IEC:2011(E)
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 9
4 Marking . 12
4.1 Mandatory marking . 12
4.2 Additional marking . 13
5 Dimensions . 14
6 Test conditions . 14
6.1 General test conditions . 14
6.2 Creation of module families to reduce test effort . 15
6.2.1 General . 15
6.2.2 Variations within family . 15
6.2.3 Compliance testing of family members . 16
7 Module power . 16
8 Light output . 17
8.1 Luminous flux . 17
8.2 Luminous intensity distribution, peak intensity and beam angle . 17
8.2.1 General . 17
8.2.2 Measurement. 17
8.2.3 Luminous intensity distribution . 17
8.2.4 Peak intensity value* . 18
8.2.5 Beam angle value* . 18
8.3 Efficacy . 18
9 Chromaticity co-ordinates, correlated colour temperature (CCT) and colour
rendering . 18
9.1 Chromaticity co-ordinates . 18
9.2 Correlated colour temperature (CCT) . 19
9.3 Colour rendering index (CRI) . 19
10 LED module life . 20
10.1 General . 20
10.2 Lumen maintenance . 20
10.3 Endurance tests . 22
10.3.1 General . 22
10.3.2 Temperature cycling test . 22
10.3.3 Supply switching test . 23
10.3.4 Accelerated operation life test . 23
11 Verification . 23
12 Information for luminaire design . 24
Annex A (normative) Method of measuring LED module characteristics . 25
Annex B (informative) Information for luminaire design . 28
Annex C (informative) Explanation of recommended life time metrics . 29
Annex D (normative) Explanation of the photometric code . 34
Annex E (informative) Meaning of confidence intervals . 35

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PAS 62717  IEC:2011(E) – 3 –
Annex F (informative) Examples of LED dies and LED packages . 38
Annex G (informative) Optimised test duration for future consideration . 40
Bibliography . 42

Figure 1 – Types of LED modules . 7
Figure 2 – Luminous flux depreciation over test time. 22
Figure C.1 – Life time specification for gradual light output degradation . 30
Figure C.2 – Life time specification for abrupt light output degradation . 31
Figure C.3 – Reliability curve R for gradual light output degradation . 32
gradual
Figure C.4 – Reliability curve R for abrupt light output degradation . 32
abrupt
Figure C.5 – Combined R and R degradation . 33
gradual abrupt
Figure E.1 – t-distribution with right sided confidence interval (1-α) . 36
Figure F.1 – Schematic drawings of LED dies . 38
Figure F.2 – Schematic drawings of LED packages . 39

a
Table 1 – Mandatory marking and location of marking . 13
Table 2 – LED module life time information . 13
Table 3 – Optional marking and location of marking . 14
Table 4 – Allowed variations within family . 15
Table 5 – Tolerance (categories) on rated chromaticity co-ordinate values . 19
Table 6 – Lumen maintenance code at an operational time as stated in 6.1 . 20
Table 7 – Sample sizes . 24
Table C.1 – Recommended x and y values for life time metrics to be used in life time
specification . 33
Table E.1 – Values of the t-distribution . 37

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– 4 – PAS 62717  IEC:2011(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
___________

LED MODULES FOR GENERAL LIGHTING –
PERFORMANCE REQUIREMENTS


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
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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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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.
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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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.
A PAS is a technical specification not fulfilling the requirements for a standard, but made
available to the public.
IEC/PAS 62717 has been prepared by subcommittee 34A: Lamps, of IEC technical committee
34: Lamps and related equipment.
This PAS was approved for
The text of this PAS is based on
publication by the P-members of
the following document:
the committee concerned as
indicated in the following document
Draft PAS Report on voting
34A/1444/PAS 34A/1462/RVD

Following publication of this PAS, which is a pre-standard publication, the technical committee
or subcommittee concerned may transform it into an International Standard.

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PAS 62717  IEC:2011(E) – 5 –
This PAS shall remain valid for an initial maximum period of 3 years starting from the
publication date. The validity may be extended for a single period up to a maximum of 3
years, at the end of which it shall be published as another type of normative document, or
shall be withdrawn.

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.

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– 6 – PAS 62717  IEC:2011(E)
INTRODUCTION
This first edition of a performance PAS for LED modules for general lighting applications
acknowledges the need for relevant tests for this new source of electrical light, sometimes
called “solid state lighting”. The publication is closely related to simultaneously developed and
edited performance standards publications (or PAS) for luminaires in general and for LED-
luminaires. Changes in the LED module PAS will have an impact on the luminaire standards
and vice versa, due to the behaviour of LEDs. Therefore, in the development of the present
PAS, a close collaboration of experts on both products has taken place.
The provisions in the PAS represent the technical knowledge of experts from the fields of the
semiconductor (LED chip) industry and of those of the traditional electrical light sources.
Three types of LED-modules are covered: with integral controlgear, with means of control on
board, but with separate controlgear (“semi-ballasted”), and with complete external
controlgear.

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PAS 62717  IEC:2011(E) – 7 –
LED MODULES FOR GENERAL LIGHTING –
PERFORMANCE REQUIREMENTS



1 Scope
This PAS specifies the performance requirements for LED modules, together with the test
methods and conditions, required to show compliance with this PAS.
The following types of LED modules are distinguished (see Figure 1):
– Type 1: Self-ballasted LED modules for use on d.c. supplies up to 250 V or on a.c.
supplies up to 1 000 V at 50 Hz or 60 Hz;
– Type 2: LED modules operating with external controlgear connected to the mains voltage,
and having further control means inside (“semi-ballasted”) for operation under constant
voltage, constant, current or constant power;
– Type 3: LED modules where the complete controlgear is separate from the module for
operation under constant voltage, constant current or constant power.
‘LED module’
Electronic
control gear LEDs
‘Self-ballasted LED module (Type 1)’’
‘Electronic control
gear for LED modules’
‘LED module’
Power supply
Control unit of
LEDs
of the control
the control gear
gear
‘Semi-ballasted LED module (Type 2)’
LED modules with
external control gear
‘Electronic control
gear for LED modules’
‘LED module’
Electronic
LEDs
control gear
‘Non-ballasted LED module (Type 3)’

The power supply of the controlgear for semi-ballasted LED modules (Type 2) is an electronic device capable of
controlling currents, voltage or power within design limits.
The control unit of the controlgear for semi-ballasted LED modules (Type 2) is an electronic device to control the
electrical energy to the LED’s.
A LED module with external controlgear can be either a non-ballasted LED module or a semi-ballasted LED
module.
Figure 1 – Types of LED modules
The requirements of this PAS relate only to type testing.
Recommendations for whole product testing or batch testing are under consideration.
This PAS covers LED modules that intentionally produce white light, based on inorganic
LEDs.
These performance requirements are additional to the requirements in IEC 62031 safety
standard for LED modules.
Electrical supply system

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– 8 – PAS 62717  IEC:2011(E)
Life time of LED modules is in most cases much longer than the practical test times.
Consequently, verification of manufacturer’s life time claims cannot be made in a sufficiently
confident way, because projecting test data further in time is not standardised. For that
reason, the acceptance or rejection of a manufacturers life time claim, past 25 % of rated life
(with a maximum of 6 000 h), is out of the scope of this PAS.
Instead of life time validation, this PAS has opted for lumen maintenance codes at a defined
finite test time. Therefore, the code number does not imply a prediction of achievable life time.
The categories are lumen-depreciation character categories showing behaviour in agreement
with manufacturer’s information which are provided before the test is started.
In order to validate a life time claim, an extrapolation of test data is needed. A general method
of projecting measurement data beyond limited test time is under consideration.
The pass/fail criterion of the life time test as defined in this PAS is different from the life time
metrics claimed by manufacturers. For explanation of recommended life time metrics, see
Annex C.
NOTE 1 When modules are operated in a luminaire, the claimed performance data can deviate from the values
established via this PAS due to e.g. luminaire components that impact the performance of the module.
NOTE 2 The external electronic controlgears for LED modules as mentioned in Type 2 and Type 3 are not part of
the testing against the requirements of this PAS.
NOTE 3 For protection for water and dust ingress, see Clause B.4.
It may be expected that self-ballasted LED modules which comply with this PAS will start and
operate satisfactorily at voltages between 92 % and 106 % of rated supply voltage. LED
modules with external controlgear are expected to start and operate satisfactorily in
combination with the specified controlgear complying with IEC 61347-2-13 and IEC 62384. All
LED modules are expected to start and operate satisfactorily when operated under the
conditions specified by the module manufacturer and in a luminaire complying with
IEC 60598-1.
For compliance with EMC requirements, reference is made to regional requirements. For
relevant standards, see Bibliography.
NOTE It should be regarded that only those types of LED modules are subject to EMC requirements which
– in case of harmonic current are directly connected to the mains and have active elements on board;
– in case of radiated or conducted disturbances are directly connected to the mains (Type 1) or to a battery;
– in case of immunity are directly connected to the mains (Type 1) or to a battery.
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 60050-845, International Electrotechnical Vocabulary – Part 845: Lighting
IEC 60068-2-14, Environmental testing – Part 2-14: Tests – Test N: Change of temperature
IEC 60081:1997, Double-capped fluorescent lamps – Performance specifications
IEC 60598-1, Luminaires – Part 1: General requirements and tests
IEC/TR 61341, Method of measurement of centre beam intensity and beam angle(s) of
reflector lamps

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PAS 62717  IEC:2011(E) – 9 –
IEC 61347-2-13, Lamp controlgear – Part 2-13: Particular requirements for d.c. or a.c.
supplied electronic controlgear for LED modules
IEC 62031:2008, LED modules for general lighting – Safety specifications
IEC 62384, DC or AC supplied electronic control gear for LED modules – Performance
requirements
IEC/TS 62504, General lighting – LED and LED modules – Terms and definitions
CIE 13.3:1995 (CD008-1995 included), Method of measuring and specifying colour rendering
properties of light sources
CIE 121:1996, The photometry and goniophotometry of luminaires
CIE 177:2007, Colour rendering of white LED light sources
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-845 and
IEC/TS 62504 apply, together with the following.
3.1
rated value
quantity value for a characteristic of a LED module for specific operating conditions
The value and the conditions are specified in this PAS, or assigned by the manufacturer or
responsible vendor.
3.2
test voltage, current or power
input voltage, current or power at which tests are carried out
3.3
lumen maintenance
value of the luminous flux at a given time in the life of a LED module divided by the initial
value of the luminous flux of the module and expressed as a percentage x of the initial
luminous flux value
NOTE The lumen maintenance of a LED module is the effect of decrease of lumen output of the LED(s) or a
combination of this with failure(s) of LED(s) if the module contains more than one LED.
3.4
initial values
photometric and electrical characteristics at the end of the ageing period and/or stabilisation
time
3.5
maintained values
photometric and electrical characteristics at an operational time as stated in 6.1, including
stabilisation time

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– 10 – PAS 62717  IEC:2011(E)
3.6
rated life
length of time during which a population of LED modules provides more than claimed
percentage x of the initial luminous flux, published in combination with the failure fraction, as
declared by the manufacturer or responsible vendor
NOTE 1 For sample size, see Clause 6.
NOTE 2 Note 2 and Note 3 of 3.7 apply.
NOTE 3 For explanation of the figure L F , see Annex C.
x y
3.7
life (of an individual LED module)
L
x
length of time during which a LED module provides more than claimed percentage x of the
initial luminous flux, under standard conditions
NOTE 1 A LED module has thus reached its end of life, when it no longer provides claimed percentage x of the
initial luminous flux. Life is always published as combination of life (L ) at lumen maintenance x and failure fraction
x
F , see 3.8.
y
NOTE 2 Any built-in electronic controlgear, however, may show a sudden end of life failure. The definition under
3.7 implies that a LED module giving no light at all, due to an electronic failure, has actually reached end of life,
since it no longer complies with the minimum luminous flux level as declared by the manufacturer or responsible
vendor.
3.8
failure fraction
F
y
percentage y of a number of LED modules of the same type that at their rated life designates
the percentage (fraction) of failures
NOTE 1 This failure fraction expresses the combined effect of all components of a module including mechanical,
as far as the light output is concerned. The effect of the LED could either be less light than claimed or no light at
all.
NOTE 2 For LED modules, normally a failure fraction of 10 % or/and 50 % are being applied, indicated as F
10
and/or F .
50
3.9
photometric code*
colour designation of a LED module giving white light is defined by the correlated colour
temperature and the CIE 1974 general colour rendering index
* Under consideration
NOTE Definition of photometric code is given in IEC/TS 62504 as light colour designation.
3.10
stabilisation time
time which the LED module requires to obtain stable photometric conditions with constant
electrical input
NOTE LED modules may be regarded stable at stable thermal conditions.
3.11
ageing
preconditioning period of the LED module
3.12
type
LED module, representative of the production

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PAS 62717  IEC:2011(E) – 11 –
3.13
family
group of LED modules that have
– the same method of control and operation (self-ballasted, semi-ballasted, non-ballasted);
– the same classification according to the method of installation (reference is made to
IEC 62031, Clause 6);
– the same class of protection against electrical shock;
– the same design characteristics, distinguished by common features of materials,
components, and/or method of processing
3.14
type test
conformity test on one or more LED modules, representative of the production
3.15
type test sample
one or more LED modules submitted by the manufacturer or responsible vendor for the
purpose of the type test
3.16
t -point
p
the designated location of the point where to measure the performance temperatures t and t
p p
at the surface of the LED module
max
3.17
t temperature
p
temperature at the t -point, related to the performance of the LED module
p
NOTE 1 t ≤ t . This is only the case if the location of t and t is the same. For t , see 3.10 of IEC 62031.
p c p c c
NOTE 2 The location of t and t can be different, but the value of t is leading.
p c c
NOTE 3 For a given life time, the t temperature is a fixed value, not a variable.
p
NOTE 4 There can be more than one t , depending on the life time claim.
p
3.18
recommended maximum LED module operating temperature value

t
p max
maximum t temperature as declared by the manufacturer or responsible vendor
p
NOTE 1 t ≤ t . This is only the case if the location of t and t is the same. For t , see 3.10 of IEC 62031.
p max c p max c c
NOTE 2 The location of t and t can be different, but the value of t is leading.
p max c c
3.19
semi-ballasted LED module
module which carries the control unit of the controlgear, and is operated by the separated
power supply of the controlgear
NOTE In this standard, semi-ballasted LED modules are designated “Type 2”.
3.20
control unit of the controlgear
electronic device, being part of the controlgear, responsible for controlling the electrical
energy to the LEDs as well as colour mixing, response to depreciating luminous flux and
further performance features
NOTE In semi-ballasted LED modules, the control unit of the controlgear is on board the module and separate
from the power supply of the controlgear.

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– 12 – PAS 62717  IEC:2011(E)
3.21
power supply of the controlgear
electronic device, being part of the controlgear, capable of controlling current, voltage or
power within design limits. This device contains no additional LED control capabilities.
NOTE 1 For semi-ballasted LED modules, the power supply of the controlgear is separate from the LED module
on a distant location.
NOTE 2 The energy source of a power supply can be either a battery or the electrical supply system.
3.22
LED module efficacy
quotient of the luminous flux emitted by the power cons
...