IEC 60598-2-2:2023

Luminaires - Part 2-2: Particular requirements - Recessed luminaires and recessed air-handling luminaires

IEC 60598-2-2:2023 specifies requirements for recessed luminaires incorporating electric light sources for operation from supply voltages up to 1 000 V. It also specifies requirements for recessed air-handling luminaires for use with a ventilation duct or ventilated space (plenum).
This fourth edition cancels and replaces the third edition published in 2011. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition (there are no major technical changes, see Annex D):
The requirements specific to recessed luminaries given in IEC 60598-1 are now incorporated in this Part 2-2.
The requirements for air-handling luminaires given in IEC 60598-2-19 are now incorporated in this Part 2-2.
The references to Part 1 have been updated.

Luminaires - Partie 2-2: Exigences particulières - Luminaires encastrés et luminaires à circulation d'air encastrés

L'IEC 60598-2-2:2023 spécifie des exigences pour les luminaires encastrés qui comporte des sources lumineuses électriques, pour un fonctionnement à des tensions d'alimentation jusqu'à 1 000 V. Elle spécifie également des exigences pour les luminaires à circulation d'air encastrés pour un fonctionnement avec un conduit de ventilation ou un espace ventilé (plenum).
Cette quatrième édition annule et remplace la troisième édition parue en 2011. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente (il n'y a aucune modification technique essentielle, voir l’Annexe D):
les exigences spécifiques aux luminaires encastrés données dans l'IEC 60598-1 sont désormais intégrées dans la présente Partie 2-2;
les exigences relatives aux luminaires à circulation d'air données dans l'IEC 60598-2-19 sont désormais intégrées dans la présente Partie 2-2;
les références à la Partie 1 ont été mises à jour.

General Information

• Status: Published
• Publication Date: 15-Jan-2023
• ICS: 29.140.50 - Lighting installation systems
• Technical Committee: SC 34D - Luminaires
• Drafting Committee: WG 1 - TC 34/SC 34D/WG 1
• Current Stage: PPUB - Publication issued
• Start Date: 16-Jan-2023
• Completion Date: 27-Jan-2023

Relations

• Revises: IEC 60598-2-2:2011 - Luminaires - Part 2-2: Particular requirements - Recessed luminaires
• Effective Date: 05-Sep-2023

Overview

IEC 60598-2-2:2023 - fourth edition - is the International Electrotechnical Commission (IEC) particular standard for recessed luminaires and recessed air‑handling luminaires. It covers luminaires incorporating electric light sources for supply voltages up to 1 000 V, and recessed fixtures designed to be used with a ventilation duct or ventilated plenum (forced ventilation). This 2023 edition is a technical revision that incorporates requirements previously in IEC 60598‑1 (recessed-specific clauses) and IEC 60598‑2‑19 (air‑handling luminaires).

Key topics and requirements

• Scope and classification: Defines which recessed and air‑handling luminaires are covered and references the general rules in IEC 60598‑1.
• Marking and symbols: Requires durable, visible markings during installation - including IP ratings and mandatory symbols (e.g., not for mounting on normally flammable surfaces or not for covering with thermal insulation). Minimum symbol size is specified (25 mm).
• Construction and safety: Rules for mechanical construction, creepage distances, clearances, provision for earthing, terminals, and wiring to ensure safe installation and operation.
• Wiring and cables: Flexible connection cables supplied must meet equivalent properties to IEC 60227 or IEC 60245 and withstand the maximum operating temperatures of the luminaire.
• Protection and tests: Requirements for protection against electric shock, insulation resistance, dielectric strength, resistance to heat/fire/tracking, and resistance to dust and moisture (IP ratings).
• Thermal and endurance tests: Thermal routines and endurance tests are specified, including procedures in Annex B (recessed thermal test methods) and guidance on measuring ambient temperature in installations (Annex A).
• Air‑handling specifics: Special clauses for luminaires designed to handle forced ventilation (plenum use), with explanatory guidance on the significance of the t‑rating for air‑handling luminaires (Annex C).
• Standards integration: Tests in this part are to be carried out in the order listed and used together with the latest IEC 60598‑1.

Applications and who uses this standard

• Luminaire manufacturers - design, testing and documentation of recessed and plenum-compatible luminaires to meet international safety and performance requirements.
• Test laboratories and certification bodies - conformity assessment and type testing for market access.
• Lighting specifiers, architects and electrical contractors - selecting appropriate recessed lighting for ceilings, insulated ceilings, and ventilation plenums.
• HVAC and building engineers - integration of air‑handling luminaires with ventilation systems and plenum safety compliance.
• Regulators and procurement teams - referencing an internationally accepted standard for product compliance and building codes.

Related standards

• IEC 60598‑1 (Luminaires - General requirements and tests)
• IEC 60598 series (other particular parts)
• IEC 60227, IEC 60245 (cable standards)
• Formerly related: IEC 60598‑2‑19 (air‑handling luminaires) - now incorporated into this Part 2‑2

Keywords: IEC 60598-2-2:2023, recessed luminaires standard, recessed lighting safety, air-handling luminaires, plenum luminaires, IEC luminaires.

Standards Content (Sample)

IEC 60598-2-2 ®
Edition 4.0 2023-01
COMMENTED VERSION
INTERNATIONAL
STANDARD
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Luminaires –
Part 2-2: Particular requirements – Recessed luminaires and recessed air-
handling luminaires
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IEC 60598-2-2 ®
Edition 4.0 2023-01
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Luminaires –
Part 2-2: Particular requirements – Recessed luminaires and recessed air-
handling luminaires
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.50 ISBN 978-2-8322-6371-6

– 2 – IEC 60598-2-2:2023 CMV © IEC 2023
CONTENTS
FOREWORD .3
2.1 Scope .5
2.2 Normative references .5
2.3 Terms and definitions .5
2.4 General test requirements .6
2.5 Classification of luminaires .6
2.6 Marking.6
2.7 Construction .7
2.8 Creepage distances and clearances.7
2.9 Provision for earthing .7
2.10 Terminals .7
2.11 External and internal wiring .7
2.12 Protection against electric shock .7
2.13 Endurance tests and thermal tests .8
2.14 Resistance to dust and moisture .9
2.15 Insulation resistance and electric strength .9
2.16 Resistance to heat, fire and tracking .9

Annex A (informative normative) Measurement of ambient temperature in an installation . 10
Annex B (normative) Recessed luminaires thermal test methods . 11
Annex C (informative) Explanation of t with respect to air-handling luminaires . 14
a
Annex D (informative) Schedule of amended subclauses containing more serious or
critical requirements which require products to be retested . 15
Bibliography . 16
List of comments . 17

Figure 1 – Symbol for luminaires not suitable for direct mounting on normally flammable
surfaces (suitable only for mounting on non-combustible surfaces) .6
Figure 2 – Symbol for luminaires not suitable for covering with thermally insulating
material .7
Figure B.1 – Example of test recess where a luminaire suitable for covering with thermal
insulating material comprises separate parts . 11
Figure B.2 – Example of test recess where a luminaire not suitable for covering with
thermal insulating material comprises separate parts . 12
Figure B.3 – Correct test box size (insulating ceilings) for settable and adjustable
luminaires . 13

Table 1 – Operating temperature of cable .8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LUMINAIRES –
Part 2-2: Particular requirements –
Recessed luminaires and recessed air-handling luminaires 1

FOREWORD
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This commented version (CMV) of the official standard IEC 60598-2-2:2023 edition 4.0
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This publication contains the CMV and the official standard. The full list of comments is
available at the end of the CMV.

– 4 – IEC 60598-2-2:2023 CMV © IEC 2023
IEC 60598-2-2 has been prepared by subcommittee 34D: Luminaires, of IEC technical
committee 34:Lighting. It is an International Standard.
This fourth edition cancels and replaces the third edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition (there are no major technical changes, see Annex D):
a) The requirements specific to recessed luminaries given in IEC 60598-1 are now
incorporated in this Part 2-2.
b) The requirements for air-handling luminaires given in IEC 60598-2-19 are now incorporated
in this Part 2-2.
c) The references to Part 1 have been updated.
The text of this International Standard is based on the following documents:
Draft Report on voting
34D/1681/FDIS 34D/1688/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60598 series, published under the general title Luminaires can be
found on the IEC website.
This Part 2-2 is to be used in conjunction with the latest edition of IEC 60598-1 and its
amendment(s). It was established on the basis of the ninth edition (2020).
NOTE 1 When "Part 1" is mentioned in this document, it refers to IEC 60598-1.
NOTE 2 In this document, the following print type is used:
– compliance statements: in italic type.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
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IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
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contents. Users should therefore print this document using a colour printer.

LUMINAIRES –
Part 2-2: Particular requirements –
Recessed luminaires and recessed air-handling luminaires

2.1 Scope
This part of IEC 60598 specifies requirements for recessed luminaires incorporating electric
light sources for operation from supply voltages up to 1 000 V. This section does not apply to
air-handling or liquid-cooled luminaires. It also specifies requirements for recessed air-handling
luminaires for use with a ventilation duct or ventilated space (plenum).
NOTE The expressions "ventilation" and "ventilated" in this document refer to forced ventilation.
2.2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including 450/750 V
IEC 60598-1, Luminaires – Part 1: General requirements and tests
2.3 Terms and definitions
For the purposes of this document, the terms and definitions given in Part 1 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
2.3.1
air-handling luminaire 2
luminaire specially designed for use in association with an air conditioning system
Note 1 to entry: The air can pass either through the lamp chamber or through separate passages.
Note 2 to entry: For an explanation of the significance of t as applied to air-handling luminaires, see Annex C.
a
2.3.2
static operation 3
operation of a luminaire when not handling either forced supply or extract air but permitting
natural convection
– 6 – IEC 60598-2-2:2023 CMV © IEC 2023
2.4 General test requirements
The provisions of Section 0 of Part 1 apply. The tests described in each appropriate section of
Part 1 shall be carried out in the order listed in this document.
A procedure measuring ambient temperature in an installation is given in Annex A.
NOTE Annex A provides additional information on how ambient temperature is considered within the recessed
cavity area relative to the t marking of the luminaire.
a
2.5 Classification of luminaires
Luminaires shall be classified in accordance with the provisions of Section 2 of Part 1.
2.6 Marking 4
2.6.1 The provisions of Section 3 of Part 1 apply, together with the requirements of 2.6.2,
2.6.3 and 2.6.4.
The following information shall be distinctly and durably marked on the luminaire and be visible
during installation or behind a cover or part which is removed during installation.
2.6.2 For recessed luminaires with two IP ratings, both ratings shall be visible during
installation and it shall be obvious to which parts of the luminaire the ratings refer. The relevant
information shall be provided even if the rating is IP20 or the lower rating is specified as
ordinary.
2.6.3 Where applicable, the relevant symbol for recessed luminaires not suitable for direct
mounting on normally flammable surfaces shall be distinctly and durably marked on the
luminaire and be visible during installation or behind a cover or part which is removed during
installation.
When marked, this symbol shall be explained on the luminaire or in the manufacturer's
instructions provided with the luminaire.
The minimum size of the symbol shall be 25 mm for each side. See Figure 1.

Figure 1 – Symbol for luminaires not suitable for direct mounting on normally
flammable surfaces (suitable only for mounting on non-combustible surfaces)
2.6.4 Where applicable, the relevant symbol for luminaires not suitable for covering with
thermally insulated material shall be distinctly and durably marked on the luminaire and be
visible during installation or behind a cover or part which is removed during installation.
When marked, this symbol shall be explained on the luminaire or in the manufacturer's
instructions provided with the luminaire.
The minimum size of the symbol shall be 25 mm for each side. See Figure 2.

Figure 2 – Symbol for luminaires not suitable for covering with thermally insulating
material
2.7 Construction
The provisions of Section 4 of Part 1 apply.
2.8 Creepage distances and clearances
The provisions of Section 11 of Part 1 apply.
2.9 Provision for earthing
The provisions of Section 7 of Part 1 apply.
2.10 Terminals
The provisions of Sections 14 and 15 of Part 1 apply.
2.11 External and internal wiring
The provisions of Section 5 of Part 1 apply, together with the following.
Flexible cables or cords used as a means of connection to the supply, when supplied by the
luminaire manufacturer, shall be at least equal in their mechanical and electrical properties to
those specified in the IEC 60227 series or the IEC 60245 series and shall be capable of
withstanding without deterioration the highest temperature to which they may can be exposed
under normal conditions of use. Materials other than PVC and rubber are suitable if the above
requirements are met.
Compliance shall be checked by the tests specified in Clause 2.13.
NOTE The use of flexible cables and cords with recessed luminaires is appropriate for the following reasons:
1) The flexible cable or cord cannot be easily touched as it is normally out of reach within the recess.
2) To facilitate installation of the luminaire into the recess.
3) To permit the adjustment of settable and adjustable recessed luminaires.
2.12 Protection against electric shock
The provisions of Section 8 of Part 1 apply, together with the following.
The parts of the luminaire and components within the ceiling space or cavity shall provide the
same degree of protection against electric shock as the luminaire parts below the ceiling space.
NOTE The ceiling space or cavity is regarded as accessible for installation and maintenance, and the barriers do
not provide adequate protection against electric shock.
Compliance is checked by inspection.

– 8 – IEC 60598-2-2:2023 CMV © IEC 2023
2.13 Endurance tests and thermal tests
2.13.1 The provisions of Section 12 of Part 1 apply, together with the following requirements.
2.13.2 The luminaire shall be mounted and tested according to Annex B. 5
Luminaires with an IP classification greater than IP20 shall be subjected to the relevant tests
of Clauses 12.4, 12.5, 12.6 and 12.7 of Section 12 of Part 1 after the test(s) of Clause 9.2 but
before the test(s) of Clause 9.3 of Section 9 of Part 1 specified in Clause 2.14 of this document.
2.13.3 Wiring, for connection to the supply, which passes into or can touch the luminaire, shall
not reach an unsafe temperature.
Compliance shall be checked by the following tests:
The luminaire is connected to the supply using the cable provided with the luminaire or using a
cable in accordance with the marking on the luminaire or, if not marked, as specified in the
manufacturer's instruction sheet; otherwise PVC cable complying with the IEC 60227 series is
used.
The hottest point is found (along the internal route or on the outer surface of the luminaire) with
which the cable is likely to lie in contact during normal service. The cable is lightly held in
contact at this point and the temperature of the insulation at the point of contact is measured
as described in Annex K of Part 1.
The operating temperature of the cable shall not exceed the limits given in Table 1.
Luminaires with an IP classification greater than IP20 shall be subjected to the relevant tests
of Clauses 12.4, 12.5, 12.6 and 12.7 of Section 12 of IEC 60598-1 after the test(s) of
Clause 9.2 but before the test(s) of Clause 9.3 of Section 9 of IEC 60598-1 specified in Clause
2.14 of this section of IEC 60598-2.
Table 1 – Operating temperature of cable
Designation of cable Limit of operating temperature
Cable (including sleeves) provided with the luminaire The maximum temperature specified in Table 12.2 of
Part 1
Cable not provided with the luminaire:
a) luminaires with cable temperature marking The marked temperature
b) luminaires without cable temperature marking The maximum temperature specified in Table 12.2 of
Part 1 for ordinary PVC not subject to mechanical
stress
2.13.4 The test for air-handling luminaires is made under static operating conditions. 6
When testing air-handling luminaires with stubs for connection of ventilation ducts, the stubs
are suitably connected to the sides or to the top of the test box according to the installation
instructions.
a) Normal operating conditions: During the test, the temperature of upward facing surfaces
within the main air path shall not exceed 100 °C, except that for surfaces of light sources,
the temperature shall not exceed 150 °C.
a) Abnormal operating conditions: The temperature of the convection air when leaving the
luminaire shall not exceed 100 °C. During the test, the temperature of upward facing
surfaces within the main air path shall not exceed 130 °C except that for surfaces of light
sources, the temperature shall not exceed 150 °C.

2.14 Resistance to dust and moisture
2.14.1 The provisions of Section 9 of Part 1 apply, as well as the following.
2.14.2 For luminaires with an IP classification greater than IP20, the order of the tests specified
in Section 9 of Part 1 shall be as specified in Clause 2.13 of this document.
2.14.3 7 For recessed luminaires, the parts in the recess and the parts protruding from the
recess shall each be tested according to their IP classification as indicated in the manufacturer's
mounting instructions. A box encapsulating the part in the recess can be necessary.
NOTE The claimed IP rating is only applicable to the enclosure of the luminaire. In the case of a recessed luminaire,
the IP rating of the luminaire does not protect the integrity of any seals outside of the luminaire, e.g. between the
lower and upper parts of the ceiling.
2.15 Insulation resistance and electric strength
The provisions of Section 10 of Part 1 apply.
2.16 Resistance to heat, fire and tracking
The provisions of Section 13 of Part 1 apply.

– 10 – IEC 60598-2-2:2023 CMV © IEC 2023
Annex A
(informative normative)
Measurement of ambient temperature in an installation
Care is needed in deciding whether a recessed luminaire is operating within its thermal limits
in an existing lighting installation. It is even more difficult to predict whether a luminaire will be
satisfactory in a proposed installation and a "mock-up" is usually required. In the past, there
have been instances of overheating of luminaires, for example, overheating owing to the
presence of heating services above the ceiling plane.
The following procedure is for measuring the ambient temperature in which the luminaire
operates. The t rating of the luminaire should be at least equal to this ambient temperature.
a
The ambient temperature is measured in the plane of the ceiling (or other mounting surface) at
the mid-point of a typical cavity. It is important that all other luminaires in the installation and
all other services which may can affect the thermal conditions of the luminaire are operating.
The cavity is covered above the measuring point to prevent a non-typical interchange of air and
so that the cover may can absorb extraneous heat which would be absorbed by the luminaire.
NOTE It may can be convenient to insert for this purpose the shell of the luminaire.
The test recess used to measure operating temperatures of recessed luminaires is intended to
represent the most onerous closed recess (without other heat source) which is likely to be
experienced in service. A recessed luminaire should not be installed in a cavity with a volume
smaller than that of the test recess, unless the manufacturer of the luminaire has verified that
operation will be satisfactory.
The test recess may can also approximate to the thermal conditions above a suspended ceiling
if the larger air volume is offset by heat-emitting services. In a particular installation, more
onerous thermal conditions than this may can exist and it is, therefore, essential to carry out a
practical check. Conversely, the space above the ceiling may can have free air movement and
no heat-emitting services; for such an installation, the t rating of the luminaire as determined
a
in the test recess incorporates a temperature margin and the t rating may be exceeded if the
a
manufacturer of the luminaire has verified that operation in the particular installation will be
satisfactory.
During tests, to determine or check a t rating for a luminaire, measurements of ambient
a
temperature are made inside the draught-proof enclosure and outside the test recess in
accordance with Annex K of Part 1.

Annex B
(normative)
Recessed luminaires thermal test methods 8
The requirements of Annex D of Part 1 are applicable with the following additional requirements.
Recessed luminaires suitable for covering with thermal insulating material are mounted in a test
recess consisting of a suspended ceiling and thermal insulation material positioned in direct
contact with the luminaire.
Recessed luminaires not suitable for covering with thermal insulating material are mounted in
a test recess consisting of a suspended ceiling, on top of which is a rectangular box with vertical
sides and horizontal top.
The suspended ceiling is made of a 12 mm thick general use particle board, in which a suitable
opening has been made for the luminaire. The general use particle board shall extend at least
100 mm outside the projection of the luminaire on this board.
NOTE 1 An example of general used particle board is boards manufactured according to ISO 16893.
a) Luminaires for recessing into ceilings with thermal insulating material covering the luminaire
Thermal insulating material is tightly fitted to the outside of the luminaire. The thermal
insulation shall be equivalent to two 10 cm thick layers of mineral wool with a coefficient of
thermal resistivity of 0,04 W/(m · K). Thinner layers can be used when having a higher
thermal resistivity. If a luminaire is provided with separate parts intended for recessed
mounting, (for example, with separate light source enclosure and controlgear enclosure),
the test recess shall be constructed observing the manufacturer's recommendations for
minimum spacing between parts (see Figure B.1). The space shall be filled with insulating
material.
Key
a minimum separation as specified by the manufacturer
Figure B.1 – Example of test recess where a luminaire suitable for covering with
thermal insulating material comprises separate parts
b) Luminaires for recessing into ceilings but not suitable for covering with thermal insulating
material.
For recessed luminaires of this kind, the test recess consisting of a suspended ceiling, on
top of which is a rectangular box with vertical sides and horizontal top, shall be fixed above
the luminaire. The vertical sides of the box are made of 19 mm thick laminated wood and
the top of 12 mm thick general use particle board tightly sealed to the sides.
The sides and top of the box shall be spaced from the luminaire in accordance with the
manufacturer's instructions supplied with the luminaire. If no spacing is specified, the sealed
box shall touch the luminaire all around.

– 12 – IEC 60598-2-2:2023 CMV © IEC 2023
If a luminaire is provided with separate parts intended for recessed mounting, (for example,
with separate light source enclosure and controlgear enclosure), the test recess shall be
constructed as a single box observing the manufacturer's recommendations for minimum
spacing between parts and the inside of the recess (see Figure B.2). Where spacing between
parts is not specified (item 'a' of Figure B.2), separate test recesses shall be used for each part.

Key
a, b, c, d minimum separation as specified by the manufacturer
Figure B.2 – Example of test recess where a luminaire not suitable for covering with
thermal insulating material comprises separate parts
If there are projecting spacers on the top or sides of the luminaire, then these spacers shall be
placed in direct contact with the inside surfaces of the test box or insulating material.
The suspended ceiling and the interior of the box are painted black with a matt non-metallic
paint, and there shall be a gap of not less than 100 mm between this assembly and the inside
walls, ceiling and floor of the test enclosure.
NOTE 2 In Australia and New Zealand recessed luminaires are classified and tested for installations with thermal
insulation in accordance with AS/NZS 60598-2-2, Particular requirements – Recessed Luminaires.
NOTE 3 It is acceptable in Japan to apply this Annex B or JIL 5002 for the thermal test on recessed luminaires.
When a luminaire is intended to be recessed into a wall, the test is made using a test recess
similar to that described above, but with the board placed vertically.
For luminaires classified for mounting in direct contact with a normally flammable surface and
suitable for covering with thermal insulating material, no part of the insulating material and the
luminaire surface above the suspended ceiling shall exceed 90 °C during the normal operation
thermal test and 130 °C during the abnormal operation thermal test.
For luminaires classified for mounting in direct contact with a normally flammable surface not
suitable for covering with thermal insulating material, no part of the test recess shall exceed
90 °C during the normal operation thermal test and 130 °C during the abnormal operation
thermal test.
For luminaires classified as not suitable for direct mounting on normally flammable surfaces,
no temperatures are measured for the mounting surface or test recess.
All spacings shall be measured from the extremes of the positions of movement where
luminaires are settable and adjustable in overall dimension or position in either axis when fully
installed and during normal operation (see Figure B.3).
Figure B.3 illustrates the correct test box size for a luminaire that is adjustable in both axes and
thus needs space within a ceiling for the setting or the adjustment.

Figure B.3 – Correct test box size (insulating ceilings) for settable and adjustable
luminaires
– 14 – IEC 60598-2-2:2023 CMV © IEC 2023
Annex C
(informative)
Explanation of t with respect to air-handling luminaires 9
a
"Rated maximum ambient temperature" (symbol: t ) is defined in Part 1 and the definition
a
includes the phrase "under normal conditions". In the case of an air-handling luminaire, "normal
conditions" depend on the type of air-conditioning system with which the luminaire is
associated, and it is therefore necessary to specify a set of conditions under which t will be
a
measured and to draw attention to the relationship between these conditions and those which
can occur in practice.
The conditions specified in this document are those associated with static operation, that is
when the luminaire is not handling forced supply or extract air, but permitting normal convection
air flow, and the t to be marked on the luminaire is the maximum ambient temperature in which
a
the luminaire will operate under these conditions.
When the luminaire is installed as part of an air conditioning system, however, the ambient
temperature in the vicinity of the luminaire depends on the type and characteristics of the
system, and these can be assessed only by the user.
For this assessment, the temperature should be measured at the mid-point of the cavity in which
the luminaire will be mounted, with a dummy or static luminaire in position to simulate
restrictions which the luminaire can cause to free flow.
In order to simulate the worst conditions which can arise in forced air-flow systems, the air-
circulation system should be switched off during temperature measurements on systems which
either supply cooling air or extract air at room temperature, and switched on during
measurements on systems supplying air above room temperature.
A luminaire chosen for use in this position should have a t at least as high as the measured
a
temperature.
Annex D
(informative)
Schedule of amended subclauses containing more serious or critical
requirements which require products to be retested
No requirements of this document are considered more onerous compared with the previous
edition of IEC 60598-2-2 and with IEC 60598-2-19.

– 16 – IEC 60598-2-2:2023 CMV © IEC 2023
Bibliography
IEC 60598-2-19, Luminaires – Part 2-19: Particular requirements – Air-handling luminaires
(safety requirements)
ISO 16893, Wood-based panels – Particleboard
AS/NZS 60598-2-2, Luminaires Particular requirements – Recessed Luminaires
JIL 5002, Recessed lighting fixture

List of comments
1 The title and scope are revised to include also Part 2-19. After publication of this standard
the intention is to withdraw IEC 60598-2-19.
2 This definition is taken from IEC 60598-2-19.
3 This definition is taken from IEC 60598-2-19.
4 Marking requirements previously in IEC 60598-1 and specific to recessed luminaires are
now moved into this Part 2-2.
5 The new Annex B was previously part of the Annex D in IEC 60598-1.
6 This new Clause 2.13.4 covers requirements that were previously part of IEC 60598-2-19.
7 These requirements were previously part of the test conditions in IEC 60598-1.
8 The text of this new Annex B was previously part of the Annex D of IEC 60598-1. This
consolidates the specific requirements for recessed luminaire to this document for better
readability. It is the intention to remove this text from IEC 60598-1 after publication of this
standard.
9 This new Annex C covers information that was previously part of IEC 60598-2-19.

___________
IEC 60598-2-2 ®
Edition 4.0 2023-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Luminaires –
Part 2-2: Particular requirements – Recessed luminaires and recessed air-
handling luminaires
Luminaires –
Partie 2-2: Exigences particulières – Luminaires encastrés et luminaires à
circulation d'air encastrés
– 2 – IEC 60598-2-2:2023 © IEC 2023
CONTENTS
FOREWORD . 3
2.1 Scope . 5
2.2 Normative references . 5
2.3 Terms and definitions . 5
2.4 General test requirements . 6
2.5 Classification of luminaires . 6
2.6 Marking . 6
2.7 Construction . 7
2.8 Creepage distances and clearances . 7
2.9 Provision for earthing . 7
2.10 Terminals . 7
2.11 External and internal wiring . 7
2.12 Protection against electric shock . 7
2.13 Endurance tests and thermal tests . 8
2.14 Resistance to dust and moisture . 8
2.15 Insulation resistance and electric strength . 9
2.16 Resistance to heat, fire and tracking . 9
Annex A (normative) Measurement of ambient temperature in an installation . 10
Annex B (normative) Recessed luminaires thermal test methods . 11
Annex C (informative) Explanation of t with respect to air-handling luminaires . 14
a
Annex D (informative) Schedule of amended subclauses containing more serious or
critical requirements which require products to be retested . 15
Bibliography . 16

Figure 1 – Symbol for luminaires not suitable for direct mounting on normally
flammable surfaces (suitable only for mounting on non-combustible surfaces) . 6
Figure 2 – Symbol for luminaires not suitable for covering with thermally insulating
material . 7
Figure B.1 – Example of test recess where a luminaire suitable for covering with
thermal insulating material comprises separate parts . 11
Figure B.2 – Example of test recess where a luminaire not suitable for covering with
thermal insulating material comprises separate parts . 12
Figure B.3 – Correct test box size (insulating ceilings) for settable and adjustable
luminaires . 13

Table 1 – Operating temperature of cable . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LUMINAIRES –
Part 2-2: Particular requirements –
Recessed luminaires and recessed air-handling luminaires

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, o
...

IEC 60598-2-2 ®
Edition 4.0 2023-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Luminaires –
Part 2-2: Particular requirements – Recessed luminaires and recessed air-
handling luminaires
Luminaires –
Partie 2-2: Exigences particulières – Luminaires encastrés et luminaires à
circulation d'air encastrés
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IEC 60598-2-2 ®
Edition 4.0 2023-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Luminaires –
Part 2-2: Particular requirements – Recessed luminaires and recessed air-

handling luminaires
Luminaires –
Partie 2-2: Exigences particulières – Luminaires encastrés et luminaires à

circulation d'air encastrés
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.50 ISBN 978-2-8322-6331-0

– 2 – IEC 60598-2-2:2023 © IEC 2023
CONTENTS
FOREWORD . 3
2.1 Scope . 5
2.2 Normative references . 5
2.3 Terms and definitions . 5
2.4 General test requirements . 6
2.5 Classification of luminaires . 6
2.6 Marking . 6
2.7 Construction . 7
2.8 Creepage distances and clearances . 7
2.9 Provision for earthing . 7
2.10 Terminals . 7
2.11 External and internal wiring . 7
2.12 Protection against electric shock . 7
2.13 Endurance tests and thermal tests . 8
2.14 Resistance to dust and moisture . 8
2.15 Insulation resistance and electric strength . 9
2.16 Resistance to heat, fire and tracking . 9
Annex A (normative) Measurement of ambient temperature in an installation . 10
Annex B (normative) Recessed luminaires thermal test methods . 11
Annex C (informative) Explanation of t with respect to air-handling luminaires . 14
a
Annex D (informative) Schedule of amended subclauses containing more serious or
critical requirements which require products to be retested . 15
Bibliography . 16

Figure 1 – Symbol for luminaires not suitable for direct mounting on normally
flammable surfaces (suitable only for mounting on non-combustible surfaces) . 6
Figure 2 – Symbol for luminaires not suitable for covering with thermally insulating
material . 7
Figure B.1 – Example of test recess where a luminaire suitable for covering with
thermal insulating material comprises separate parts . 11
Figure B.2 – Example of test recess where a luminaire not suitable for covering with
thermal insulating material comprises separate parts . 12
Figure B.3 – Correct test box size (insulating ceilings) for settable and adjustable
luminaires . 13

Table 1 – Operating temperature of cable . 8

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LUMINAIRES –
Part 2-2: Particular requirements –
Recessed luminaires and recessed air-handling luminaires

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.
IEC 60598-2-2 has been prepared by subcommittee 34D: Luminaires, of IEC technical
committee 34:Lighting. It is an International Standard.
This fourth edition cancels and replaces the third edition published in 2011. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition (there are no major technical changes, see Annex D):
a) The requirements specific to recessed luminaries given in IEC 60598-1 are now
incorporated in this Part 2-2.
b) The requirements for air-handling luminaires given in IEC 60598-2-19 are now incorporated
in this Part 2-2.
c) The references to Part 1 have been updated.

– 4 – IEC 60598-2-2:2023 © IEC 2023
The text of this International Standard is based on the following documents:
Draft Report on voting
34D/1681/FDIS 34D/1688/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60598 series, published under the general title Luminaires can be
found on the IEC website.
This Part 2-2 is to be used in conjunction with the latest edition of IEC 60598-1 and its
amendment(s). It was established on the basis of the ninth edition (2020).
NOTE 1 When "Part 1" is mentioned in this document, it refers to IEC 60598-1.
NOTE 2 In this document, the following print type is used:
– compliance statements: in italic type.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
LUMINAIRES –
Part 2-2: Particular requirements –
Recessed luminaires and recessed air-handling luminaires

2.1 Scope
This part of IEC 60598 specifies requirements for recessed luminaires incorporating electric
light sources for operation from supply voltages up to 1 000 V. It also specifies requirements
for recessed air-handling luminaires for use with a ventilation duct or ventilated space (plenum).
NOTE The expressions "ventilation" and "ventilated" in this document refer to forced ventilation.
2.2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including 450/750 V
IEC 60598-1, Luminaires – Part 1: General requirements and tests
2.3 Terms and definitions
For the purposes of this document, the terms and definitions given in Part 1 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
2.3.1
air-handling luminaire
luminaire specially designed for use in association with an air conditioning system
Note 1 to entry: The air can pass either through the lamp chamber or through separate passages.
Note 2 to entry: For an explanation of the significance of t as applied to air-handling luminaires, see Annex C.
a
2.3.2
static operation
operation of a luminaire when not handling either forced supply or extract air but permitting
natural convection
– 6 – IEC 60598-2-2:2023 © IEC 2023
2.4 General test requirements
The provisions of Section 0 of Part 1 apply. The tests described in each appropriate section of
Part 1 shall be carried out in the order listed in this document.
A procedure measuring ambient temperature in an installation is given in Annex A.
NOTE Annex A provides additional information on how ambient temperature is considered within the recessed
cavity area relative to the t marking of the luminaire.
a
2.5 Classification of luminaires
Luminaires shall be classified in accordance with the provisions of Section 2 of Part 1.
2.6 Marking
2.6.1 The provisions of Section 3 of Part 1 apply, together with the requirements of 2.6.2,
2.6.3 and 2.6.4.
The following information shall be distinctly and durably marked on the luminaire and be visible
during installation or behind a cover or part which is removed during installation.
2.6.2 For recessed luminaires with two IP ratings, both ratings shall be visible during
installation and it shall be obvious to which parts of the luminaire the ratings refer. The relevant
information shall be provided even if the rating is IP20 or the lower rating is specified as
ordinary.
2.6.3 Where applicable, the relevant symbol for recessed luminaires not suitable for direct
mounting on normally flammable surfaces shall be distinctly and durably marked on the
luminaire and be visible during installation or behind a cover or part which is removed during
installation.
When marked, this symbol shall be explained on the luminaire or in the manufacturer's
instructions provided with the luminaire.
The minimum size of the symbol shall be 25 mm for each side. See Figure 1.

Figure 1 – Symbol for luminaires not suitable for direct mounting on normally
flammable surfaces (suitable only for mounting on non-combustible surfaces)
2.6.4 Where applicable, the relevant symbol for luminaires not suitable for covering with
thermally insulated material shall be distinctly and durably marked on the luminaire and be
visible during installation or behind a cover or part which is removed during installation.
When marked, this symbol shall be explained on the luminaire or in the manufacturer's
instructions provided with the luminaire.
The minimum size of the symbol shall be 25 mm for each side. See Figure 2.

Figure 2 – Symbol for luminaires not suitable for covering with thermally insulating
material
2.7 Construction
The provisions of Section 4 of Part 1 apply.
2.8 Creepage distances and clearances
The provisions of Section 11 of Part 1 apply.
2.9 Provision for earthing
The provisions of Section 7 of Part 1 apply.
2.10 Terminals
The provisions of Sections 14 and 15 of Part 1 apply.
2.11 External and internal wiring
The provisions of Section 5 of Part 1 apply, together with the following.
Flexible cables or cords used as a means of connection to the supply, when supplied by the
luminaire manufacturer, shall be at least equal in their mechanical and electrical properties to
those specified in the IEC 60227 series or the IEC 60245 series and shall be capable of
withstanding without deterioration the highest temperature to which they can be exposed under
normal conditions of use. Materials other than PVC and rubber are suitable if the above
requirements are met.
Compliance shall be checked by the tests specified in Clause 2.13.
NOTE The use of flexible cables and cords with recessed luminaires is appropriate for the following reasons:
1) The flexible cable or cord cannot be easily touched as it is normally out of reach within the recess.
2) To facilitate installation of the luminaire into the recess.
3) To permit the adjustment of settable and adjustable recessed luminaires.
2.12 Protection against electric shock
The provisions of Section 8 of Part 1 apply, together with the following.
The parts of the luminaire and components within the ceiling space or cavity shall provide the
same degree of protection against electric shock as the luminaire parts below the ceiling space.
NOTE The ceiling space or cavity is regarded as accessible for installation and maintenance, and the barriers do
not provide adequate protection against electric shock.
Compliance is checked by inspection.

– 8 – IEC 60598-2-2:2023 © IEC 2023
2.13 Endurance tests and thermal tests
2.13.1 The provisions of Section 12 of Part 1 apply, together with the following requirements.
2.13.2 The luminaire shall be mounted and tested according to Annex B.
Luminaires with an IP classification greater than IP20 shall be subjected to the relevant tests
of Clauses 12.4, 12.5, 12.6 and 12.7 of Section 12 of Part 1 after the test(s) of Clause 9.2 but
before the test(s) of Clause 9.3 of Section 9 of Part 1 specified in Clause 2.14 of this document.
2.13.3 Wiring, for connection to the supply, which passes into or can touch the luminaire, shall
not reach an unsafe temperature.
Compliance shall be checked by the following tests:
The luminaire is connected to the supply using the cable provided with the luminaire or using a
cable in accordance with the marking on the luminaire or, if not marked, as specified in the
manufacturer's instruction sheet; otherwise PVC cable complying with the IEC 60227 series is
used.
The hottest point is found (along the internal route or on the outer surface of the luminaire) with
which the cable is likely to lie in contact during normal service. The cable is lightly held in
contact at this point and the temperature of the insulation at the point of contact is measured
as described in Annex K of Part 1.
The operating temperature of the cable shall not exceed the limits given in Table 1.
Table 1 – Operating temperature of cable
Designation of cable Limit of operating temperature
Cable (including sleeves) provided with the luminaire The maximum temperature specified in Table 12.2 of
Part 1
Cable not provided with the luminaire:
a) luminaires with cable temperature marking The marked temperature
b) luminaires without cable temperature marking The maximum temperature specified in Table 12.2 of
Part 1 for ordinary PVC not subject to mechanical
stress
2.13.4 The test for air-handling luminaires is made under static operating conditions.
When testing air-handling luminaires with stubs for connection of ventilation ducts, the stubs
are suitably connected to the sides or to the top of the test box according to the installation
instructions.
a) Normal operating conditions: During the test, the temperature of upward facing surfaces
within the main air path shall not exceed 100 °C, except that for surfaces of light sources,
the temperature shall not exceed 150 °C.
b) Abnormal operating conditions: The temperature of the convection air when leaving the
luminaire shall not exceed 100 °C. During the test, the temperature of upward facing
surfaces within the main air path shall not exceed 130 °C except that for surfaces of light
sources, the temperature shall not exceed 150 °C.
2.14 Resistance to dust and moisture
2.14.1 The provisions of Section 9 of Part 1 apply, as well as the following.

2.14.2 For luminaires with an IP classification greater than IP20, the order of the tests specified
in Section 9 of Part 1 shall be as specified in Clause 2.13 of this document.
2.14.3 For recessed luminaires, the parts in the recess and the parts protruding from the recess
shall each be tested according to their IP classification as indicated in the manufacturer's
mounting instructions. A box encapsulating the part in the recess can be necessary.
NOTE The claimed IP rating is only applicable to the enclosure of the luminaire. In the case of a recessed luminaire,
the IP rating of the luminaire does not protect the integrity of any seals outside of the luminaire, e.g. between the
lower and upper parts of the ceiling.
2.15 Insulation resistance and electric strength
The provisions of Section 10 of Part 1 apply.
2.16 Resistance to heat, fire and tracking
The provisions of Section 13 of Part 1 apply.

– 10 – IEC 60598-2-2:2023 © IEC 2023
Annex A
(normative)
Measurement of ambient temperature in an installation
Care is needed in deciding whether a recessed luminaire is operating within its thermal limits
in an existing lighting installation. It is even more difficult to predict whether a luminaire will be
satisfactory in a proposed installation and a "mock-up" is usually required. In the past, there
have been instances of overheating of luminaires, for example, overheating owing to the
presence of heating services above the ceiling plane.
The following procedure is for measuring the ambient temperature in which the luminaire
operates. The t rating of the luminaire should be at least equal to this ambient temperature.
a
The ambient temperature is measured in the plane of the ceiling (or other mounting surface) at
the mid-point of a typical cavity. It is important that all other luminaires in the installation and
all other services which can affect the thermal conditions of the luminaire are operating. The
cavity is covered above the measuring point to prevent a non-typical interchange of air and so
that the cover can absorb extraneous heat which would be absorbed by the luminaire.
NOTE It can be convenient to insert for this purpose the shell of the luminaire.
The test recess used to measure operating temperatures of recessed luminaires is intended to
represent the most onerous closed recess (without other heat source) which is likely to be
experienced in service. A recessed luminaire should not be installed in a cavity with a volume
smaller than that of the test recess, unless the manufacturer of the luminaire has verified that
operation will be satisfactory.
The test recess can also approximate to the thermal conditions above a suspended ceiling if
the larger air volume is offset by heat-emitting services. In a particular installation, more
onerous thermal conditions than this can exist and it is, therefore, essential to carry out a
practical check. Conversely, the space above the ceiling can have free air movement and no
heat-emitting services; for such an installation, the t rating of the luminaire as determined in
a
the test recess incorporates a temperature margin and the t rating may be exceeded if the
a
manufacturer of the luminaire has verified that operation in the particular installation will be
satisfactory.
During tests, to determine or check a t rating for a luminaire, measurements of ambient
a
temperature are made inside the draught-proof enclosure and outside the test recess in
accordance with Annex K of Part 1.

Annex B
(normative)
Recessed luminaires thermal test methods
The requirements of Annex D of Part 1 are applicable with the following additional requirements.
Recessed luminaires suitable for covering with thermal insulating material are mounted in a test
recess consisting of a suspended ceiling and thermal insulation material positioned in direct
contact with the luminaire.
Recessed luminaires not suitable for covering with thermal insulating material are mounted in
a test recess consisting of a suspended ceiling, on top of which is a rectangular box with vertical
sides and horizontal top.
The suspended ceiling is made of a 12 mm thick general use particle board, in which a suitable
opening has been made for the luminaire. The general use particle board shall extend at least
100 mm outside the projection of the luminaire on this board.
NOTE 1 An example of general used particle board is boards manufactured according to ISO 16893.
a) Luminaires for recessing into ceilings with thermal insulating material covering the luminaire
Thermal insulating material is tightly fitted to the outside of the luminaire. The thermal
insulation shall be equivalent to two 10 cm thick layers of mineral wool with a coefficient of
thermal resistivity of 0,04 W/(m · K). Thinner layers can be used when having a higher
thermal resistivity. If a luminaire is provided with separate parts intended for recessed
mounting, (for example, with separate light source enclosure and controlgear enclosure),
the test recess shall be constructed observing the manufacturer's recommendations for
minimum spacing between parts (see Figure B.1). The space shall be filled with insulating
material.
Key
a minimum separation as specified by the manufacturer
Figure B.1 – Example of test recess where a luminaire suitable for covering with
thermal insulating material comprises separate parts
b) Luminaires for recessing into ceilings but not suitable for covering with thermal insulating
material.
For recessed luminaires of this kind, the test recess consisting of a suspended ceiling, on
top of which is a rectangular box with vertical sides and horizontal top, shall be fixed above
the luminaire. The vertical sides of the box are made of 19 mm thick laminated wood and
the top of 12 mm thick general use particle board tightly sealed to the sides.
The sides and top of the box shall be spaced from the luminaire in accordance with the
manufacturer's instructions supplied with the luminaire. If no spacing is specified, the sealed
box shall touch the luminaire all around.

– 12 – IEC 60598-2-2:2023 © IEC 2023
If a luminaire is provided with separate parts intended for recessed mounting, (for example,
with separate light source enclosure and controlgear enclosure), the test recess shall be
constructed as a single box observing the manufacturer's recommendations for minimum
spacing between parts and the inside of the recess (see Figure B.2). Where spacing between
parts is not specified (item 'a' of Figure B.2), separate test recesses shall be used for each part.

Key
a, b, c, d minimum separation as specified by the manufacturer
Figure B.2 – Example of test recess where a luminaire not suitable for covering with
thermal insulating material comprises separate parts
If there are projecting spacers on the top or sides of the luminaire, then these spacers shall be
placed in direct contact with the inside surfaces of the test box or insulating material.
The suspended ceiling and the interior of the box are painted black with a matt non-metallic
paint, and there shall be a gap of not less than 100 mm between this assembly and the inside
walls, ceiling and floor of the test enclosure.
NOTE 2 In Australia and New Zealand recessed luminaires are classified and tested for installations with thermal
insulation in accordance with AS/NZS 60598-2-2, Particular requirements – Recessed Luminaires.
NOTE 3 It is acceptable in Japan to apply this Annex B or JIL 5002 for the thermal test on recessed luminaires.
When a luminaire is intended to be recessed into a wall, the test is made using a test recess
similar to that described above, but with the board placed vertically.
For luminaires classified for mounting in direct contact with a normally flammable surface and
suitable for covering with thermal insulating material, no part of the insulating material and the
luminaire surface above the suspended ceiling shall exceed 90 °C during the normal operation
thermal test and 130 °C during the abnormal operation thermal test.
For luminaires classified for mounting in direct contact with a normally flammable surface not
suitable for covering with thermal insulating material, no part of the test recess shall exceed
90 °C during the normal operation thermal test and 130 °C during the abnormal operation
thermal test.
For luminaires classified as not suitable for direct mounting on normally flammable surfaces,
no temperatures are measured for the mounting surface or test recess.
All spacings shall be measured from the extremes of the positions of movement where
luminaires are settable and adjustable in overall dimension or position in either axis when fully
installed and during normal operation (see Figure B.3).
Figure B.3 illustrates the correct test box size for a luminaire that is adjustable in both axes and
thus needs space within a ceiling for the setting or the adjustment.

Figure B.3 – Correct test box size (insulating ceilings) for settable and adjustable
luminaires
– 14 – IEC 60598-2-2:2023 © IEC 2023
Annex C
(informative)
Explanation of t with respect to air-handling luminaires
a
"Rated maximum ambient temperature" (symbol: t ) is defined in Part 1 and the definition
a
includes the phrase "under normal conditions". In the case of an air-handling luminaire, "normal
conditions" depend on the type of air-conditioning system with which the luminaire is
associated, and it is therefore necessary to specify a set of conditions under which t will be
a
measured and to draw attention to the relationship between these conditions and those which
can occur in practice.
The conditions specified in this document are those associated with static operation, that is
when the luminaire is not handling forced supply or extract air, but permitting normal convection
air flow, and the t to be marked on the luminaire is the maximum ambient temperature in which
a
the luminaire will operate under these conditions.
When the luminaire is installed as part of an air conditioning system, however, the ambient
temperature in the vicinity of the luminaire depends on the type and characteristics of the
system, and these can be assessed only by the user.
For this assessment, the temperature should be measured at the mid-point of the cavity in which
the luminaire will be mounted, with a dummy or static luminaire in position to simulate
restrictions which the luminaire can cause to free flow.
In order to simulate the worst conditions which can arise in forced air-flow systems, the air-
circulation system should be switched off during temperature measurements on systems which
either supply cooling air or extract air at room temperature, and switched on during
measurements on systems supplying air above room temperature.
A luminaire chosen for use in this position should have a t at least as high as the measured
a
temperature.
Annex D
(informative)
Schedule of amended subclauses containing more serious or critical
requirements which require products to be retested
No requirements of this document are considered more onerous compared with the previous
edition of IEC 60598-2-2 and with IEC 60598-2-19.

– 16 – IEC 60598-2-2:2023 © IEC 2023
Bibliography
IEC 60598-2-19, Luminaires – Part 2-19: Particular requirements – Air-handling luminaires
(safety requirements)
ISO 16893, Wood-based panels – Particleboard
AS/NZS 60598-2-2, Luminaires Particular requirements – Recessed Luminaires
JIL 5002, Recessed lighting fixture

___________
– 18 – IEC 60598-2-2:2023 © IEC 2023
SOMMAIRE
AVANT-PROPOS . 19
2.1 Domaine d'application . 21
2.2 Références normatives . 21
2.3 Termes et définitions . 21
2.4 Exigences générales d'essai . 22
2.5 Classification des luminaires . 22
2.6 Marquage . 22
2.7 Construction . 23
2.8 Lignes de fuite et distances dans l'air . 23
2.9 Dispositions en vue de la mise à la terre . 23
2.10 Bornes . 23
2.11 Câblage externe et interne . 23
2.12 Protection contre les chocs électriques . 24
2.13 Essais d'endurance et d'échauffement . 24
2.14 Résistance aux poussières et à l'humidité . 25
2.15 Résistance d'isolement et rigidité diélectrique . 25
2.16 Résistance à la chaleur, au feu et aux courants de cheminement . 25
Annexe A (normative) Mesurage de la température ambiante dans une installation . 26
Annexe B (normative) Méthodes d'essai d'échauffement des luminaires encastrés . 27
Annexe C (informative) Explication de t en ce qui concerne les luminaires à
a
circulation d'air . 30
Annexe D (informative) Liste des articles et paragraphes amendés contenant des
exigences particulièrement importantes/critiques qui nécessitent de resoumettre à
l’essai les produits . 31
Bibliographie . 32

Figure 1 – Symbole pour les luminaires qui ne sont pas conçus pour être installés
directement sur des surfaces normalement inflammables (adaptés uniquement pour
un montage sur des surfaces non combustibles) . 22
Figure 2 – Symbole pour les luminaires qui ne sont pas conçus pour être recouverts
d'un matériau isolant thermique . 23
Figure B.1 – Exemple d'encastrement d'essai dans lequel un luminaire conçu pour
être recouvert d'un matériau isolant thermique comprend des parties séparées . 27
Figure B.2 – Exemple d'encastrement d'essai dans lequel un luminaire non conçu pour
être recouvert d'un matériau isolant thermique comprend des parties séparées . 28
Figure B.3 – Dimensions adéquates de la boîte (double plafond isolant) pour des
luminaires réglables et ajustables . 29

Tableau 1 – Température de fonctionnement du câble . 24

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
LUMINAIRES –
Partie 2-2: Exigences particulières – Luminaires encastrés
et luminaires à circulation d'air encastrés

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...