Luminaires - Part 2-23: Particular requirements - Extra-low-voltage lighting systems for ELV light sources

IEC 60598-2-23:2020 specifies requirements for extra-low-voltage lighting systems for ELV light sources, intended for ordinary interior use on supply voltages not exceeding 1 000 V. The luminaires, being connected in parallel, are supplied via freely suspended continuous supporting conductors or profiles, the current in the ELV part of the system not exceeding 25 A.
This second edition cancels and replaces the first edition published in 1996 and Amendment 1:2000. This edition constitutes a technical revision.
This edition includes the following technical changes with respect to the previous edition (there are no major technical changes, see Annex A):
a) The title has been modified to allow the inclusion of other light sources;
b) The scope has been updated to be aligned with the other parts of the IEC 60598-2 series and to include other light sources;
c) Normative references and the reference to transformer and controlgear standards have been updated;
d) The short circuit test (23.7.6.1 and 23.7.6.2) was removed and reference is now made to the same test in Part 1.

Luminaires - Partie 2-23: Exigences particulières - Systèmes d'éclairage à très basse tension pour sources de lumière TBT

L’IEC 60598-2-23:2020 spécifie les exigences pour les systèmes d’éclairage à très basse tension pour des sources de lumière TBT, prévues pour une utilisation ordinaire en intérieur, avec des tensions d’alimentation ne dépassant pas 1 000 V. Les luminaires, branchés en parallèle, sont alimentés par l’intermédiaire de conducteurs ou profils supports continus, librement suspendus. Le courant dans la partie TBT du système ne dépasse pas 25 A.
Cette deuxième édition annule et remplace la première édition parue en 1996 et son Amendement 1:2000. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques suivantes par rapport à l’édition précédente (il n’y a pas de modification technique majeure, voir Annexe A):
a) Le titre a été modifié pour permettre l'ajout d’autres sources de lumière;
b) Le domaine d’application a été mis à jour pour l'aligner sur celui des autres parties de la série IEC 60598-2 et pour inclure d’autres sources de lumière;
c) Les références normatives et la référence aux normes relatives aux transformateurs et aux appareillages de commande ont été mises à jour;
d) L’essai de court-circuit (23.7.6.1 et 23.7.6.2) a été supprimé et il est à présent fait référence au même essai dans la partie 1.

General Information

Status
Published
Publication Date
19-Jul-2020
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
20-Jul-2020
Ref Project

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IEC 60598-2-23
Edition 2.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Luminaires –
Part 2-23: Particular requirements – Extra-low-voltage lighting systems
for ELV light sources
Luminaires –
Partie 2-23: Exigences particulières – Systèmes d’éclairage à très basse tension
pour sources de lumière TBT:
IEC 60598-2-23:2020-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 60598-2-23
Edition 2.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Luminaires –
Part 2-23: Particular requirements – Extra-low-voltage lighting systems
for ELV light sources
Luminaires –
Partie 2-23: Exigences particulières – Systèmes d’éclairage à très basse tension
pour sources de lumière TBT:
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.40 ISBN 978-2-8322-8637-1

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 60598-2-23:2020 © IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 3

23.1 Scope ....................................................................................................................... 5

23.2 Normative references ................................................................................................ 5

23.3 Terms and definitions ................................................................................................ 5

23.4 General test requirements ......................................................................................... 7

23.5 Classification ............................................................................................................ 7

23.6 Marking ..................................................................................................................... 7

23.7 Construction .............................................................................................................. 8

23.8 Creepage distances and clearances .......................................................................... 9

23.9 Provisions for earthing .............................................................................................. 9

23.10 Terminals and electrical connections ......................................................................... 9

23.11 External and internal wiring ..................................................................................... 10

23.12 Protection against electric shock ............................................................................. 10

23.13 Endurance tests and thermal tests .......................................................................... 10

23.14 Resistance to dust, solid objects and moisture ........................................................ 11

23.15 Insulation resistance and electric strength ............................................................... 11

23.16 Resistance to heat, fire and tracking ....................................................................... 11

Annex A (informative) Schedule of amended subclauses containing more serious/critical

requirements which require products to be retested .............................................................. 12

Bibliography .......................................................................................................................... 13

Figure 1 – Typical supporting methods for lighting systems ..................................................... 7

---------------------- Page: 4 ----------------------
IEC 60598-2-23:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LUMINAIRES –
Part 2-23: Particular requirements – Extra-low-voltage
lighting systems for ELV light sources
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

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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

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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

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rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 60598-2-23 has been prepared by subcommittee 34D: Luminaires,

of IEC technical committee 34: Lamps and related equipment.
This second edition cancels and replaces the first edition published in 1996 and
Amendment 1:2000. This edition constitutes a technical revision.

This edition includes the following technical changes with respect to the previous edition (there

are no major technical changes, see Annex A):
a) The title has been modified to allow the inclusion of other light sources;

b) The scope has been updated to be aligned with the other parts of the IEC 60598-2 series

and to include other light sources;

c) Normative references and the reference to transformer and controlgear standards have

been updated;

d) The short circuit test (23.7.6.1 and 23.7.6.2) was removed and reference is now made to

the same test in Part 1.
---------------------- Page: 5 ----------------------
– 4 – IEC 60598-2-23:2020 © IEC 2020
The text of this International Standard is based on the following documents:
FDIS Report on voting
34D/1543/FDIS 34D/1557/RVD

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

This Part 2-23 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 (20XX) of that standard

(under preparation).
NOTE 1 When "Part 1" is mentioned in this document, it refers to IEC 60598-1.

A list of all parts in the IEC 60598 series, published under the general title Luminaires can be

found on the IEC website.
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 "http://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.
---------------------- Page: 6 ----------------------
IEC 60598-2-23:2020 © IEC 2020 – 5 –
LUMINAIRES –
Part 2-23: Particular requirements – Extra-low-voltage
lighting systems for ELV light sources
23.1 Scope

This part of IEC 60598 specifies requirements for extra-low-voltage lighting systems for ELV

light sources, intended for ordinary interior use on supply voltages not exceeding 1 000 V. The

luminaires, being connected in parallel, are supplied via freely suspended continuous

supporting conductors or profiles, the current in the ELV part of the system not exceeding 25 A.

23.2 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 TR 60083, Plugs and socket-outlets for domestic and similar general use standardized in

member countries of IEC
IEC 60598-1, Luminaires – Part 1: General requirements and tests

IEC 61347-2-2, Lamp controlgear – Part 2-2: Particular requirements for d.c. or a.c. supplied

electronic step-down convertors for filament lamps

IEC 61347-2-13, Lamp controlgear – Part 2-13: Particular requirements for d.c. or a.c. supplied

electronic controlgear for LED modules

IEC 61558-2-6, Safety of transformers, reactors, power supply units and similar products for

supply voltages up to 1 100 V – Part 2-6: Particular requirements and tests for safety isolating

transformers and power supply units incorporating safety isolating transformers

IEC 61558-2-16, Safety of transformers, reactors, power supply units and similar products for

supply voltages up to 1 100 V – Part 2-16: Particular requirements and tests for switch mode

power supply units and transformers for switch mode power supply units
23.3 Terms and definitions

For the purposes of this document, the terms and definitions given in Part 1 and the following

apply (see Figure 1).

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
---------------------- Page: 7 ----------------------
– 6 – IEC 60598-2-23:2020 © IEC 2020
23.3.1
extra-low-voltage lighting system

lighting system in kit form for light sources consisting of a transformer/convertor or controlgear,

supporting conductors and luminaires, as well as all the necessary fixing devices and the

electrical/mechanical connectors
23.3.2
supporting conductor

conductive span wire or profile freely spanned or mounted between the main points of support,

serving to supply the luminaires, and carrying the mass of the luminaires of the extra-low-

voltage lighting system
23.3.3
main support

device ensuring a sufficient mechanical connection of the supporting conductor(s) with the

appropriate parts of the building in which the extra-low-voltage lighting system is to be used

Note 1 to entry: Auxiliary supports may be necessary between the main supports.
23.3.4
auxiliary support
device along the supporting conductor to hold it in its intended position
23.3.5
spacer
device maintaining the supporting conductors at the intended separation distance
23.3.6
connector for supporting conductor

component for connecting electrically the supporting conductor(s) to the transformer/convertor

or controlgear
23.3.7
luminaire connector

component for connecting electrically and mechanically the luminaire to the supporting

conductor
---------------------- Page: 8 ----------------------
IEC 60598-2-23:2020 © IEC 2020 – 7 –
Figure 1 – Typical supporting methods for lighting systems
23.4 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.

Type tests shall be carried out on the complete extra-low-voltage lighting system as provided

by the manufacturer.
23.5 Classification

Extra-low-voltage lighting systems shall be classified in accordance with the provisions of

Section 2 of Part 1, together with the following requirement.
Luminaires in extra-low-voltage lighting systems shall be class III.
23.6 Marking

The provisions of Section 3 of Part 1 apply, together with the following requirements.

The extra-low-voltage lighting system shall be accompanied by installation instructions,

including a complete list of all parts belonging to the system. The number and type of each part

shall be clearly shown.
---------------------- Page: 9 ----------------------
– 8 – IEC 60598-2-23:2020 © IEC 2020
The installation instructions shall clearly and unambiguously state:

a) how the extra-low-voltage lighting system is to be mounted, and in particular, the maximum

permitted distance between the main supports and the spacing of auxiliary supports;

b) whether special requirements, for example due to characteristics of the

transformer/convertor/controlgear, shall be observed for components of an existing mains

supply to which the extra-low-voltage lighting system is to be connected, for example

socket-outlets, switches, dimmers;

c) that the supporting conductors of different extra-low-voltage lighting systems shall be

mounted so as not to be able to come into contact with each other, where applicable;

d) that the extra-low-voltage lighting system shall not be extended beyond the number of

luminaires belonging to the complete set, and that only parts assigned by the manufacturer

shall be used;

e) that no additional attachments, for example for decorative purposes, shall be used;

f) that the following warning statement be provided:

WARNING – To avoid the risk of overheating and fire, do not bridge the conductors;

g) the positions or spacings for the connections of luminaires (if applicable).
23.7 Construction

The provisions of Section 4 of Part 1 apply, together with the requirements of 23.7.1 to 23.7.11.

23.7.1 The whole set of the extra-low-voltage lighting system, as delivered by the

manufacturer, shall be complete, including the transformer or convertor/controlgear. The

secondary side of the extra-low-voltage lighting system shall comply with the requirements of

SELV.

Compliance is checked by mounting as in normal use, inspection and by the applicable

measurements and tests required by this document.

23.7.2 Transformers, power supply units or switch mode power supply units provided with

safety extra-low-voltage lighting systems shall be of the safety isolating type, complying with

the requirements of IEC 61558-2-6 or IEC 61558-2-16, and having a rated output voltage not

exceeding 25 V RMS or 60 V ripple free DC.

23.7.3 Convertors/controlgear provided with safety extra-low-voltage lighting systems shall be

of the safety isolating type, complying with IEC 61347-2-2 or IEC 61347-2-13, and having a

rated output voltage not exceeding 25 V RMS or 60 V ripple free DC.

23.7.4 Supporting conductors shall be continuous and shall be capable of supporting five

times the mass of the luminaires (including their lamps) intended to be connected to them.

Compliance is checked by applying a load at 90° to the conductors to the mid-point of a

maximum span equal to five times the weight of the luminaires and lamps supplied with the

system, with a minimum load of 10 kg, for a period of 1 h, applied simultaneously to both

conductors. After the test, the load is removed and the deflection from the normal position shall

not exceed 10 % of the distance between the supporting conductors measured before applying

the load.

If pin contacts or edge contacts are used in the system, then the supporting conductors shall

have been subjected to 25 piercings at different places before the test.

23.7.5 Luminaire connectors shall be capable of supporting five times the mass of the

luminaire (including its light source) without permanent deformation.
---------------------- Page: 10 ----------------------
IEC 60598-2-23:2020 © IEC 2020 – 9 –

Compliance is checked by the test of 4.14.1 of Part 1 with a minimum load of 1,5 kg. The test

shall be carried out after the test of 23.10.1, if applicable.

23.7.6 Short-circuit protection: Adequate means shall be provided to prevent impairing of

safety due to unintended short-circuiting of uninsulated accessible SELV conductors of opposite

polarity.
Compliance is checked by the test of 4.26.2 of Part 1.
23.7.7 Lampholders shall comply with the relevant IEC specifications.
Compliance is checked by inspection.

23.7.8 Instructions for use provided by the lamp manufacturers shall be observed.

Compliance is checked by inspection.

23.7.9 Electrical connections to supporting conductors shall not be subject to mechanical

tension.
Compliance is checked by inspection.

23.7.10 Provisions shall be made for the extra-low-voltage lighting system to be insulated from

the supporting structure.
23.7.11 The rated current of the system shall be limited to 25 A.
Compliance is checked by inspection and by rated data.
23.8 Creepage distances and clearances
The provisions of Section 11 of Part 1 apply.
23.9 Provisions for earthing
The provisions of Section 7 of Part 1 apply.
23.10 Terminals and electrical connections

The provisions of Sections 14 and 15 of Part 1, including the electrical tests, apply, together

with the requirements of 23.10.1 to 23.10.3.

23.10.1 Connectors for luminaires may be connected to the supporting conductor by means

of pin contacts or edge contacts which penetrate the insulation, if any, of the supporting

conductor, and provide the electric contact with the conductor.
Compliance is checked by the test of 23.7.5 after that of 23.7.4.
23.10.2 If the supporting conductor is intended to be connected to the

transformer/convertor/controlgear with a plug, the plug shall not be interchangeable with plugs

and socket-outlets in accordance with IEC TR 60083.
Compliance is checked by inspection.
---------------------- Page: 11 ----------------------
– 10 – IEC 60598-2-23:2020 © IEC 2020

23.10.3 Good contact shall be maintained between all moveable electrical contact points in

the system.

Compliance is checked by placing the luminaire or movable contact (with all parts giving a

mechanical and electrical load to the contact connected) in five separate positions, observing

the manufacturer’s instructions. A current of 1,5 times the rated current shall be passed through

each individual connection and, after 1 min, the voltage drop in each position shall not exceed

50 mV.
23.11 External and internal wiring

The provisions of Section 5 of Part 1 apply, together with the following requirement.

Supporting conductors shall be made of a suitable current-carrying material.
Compliance is checked by the test of 23.13.1.
23.12 Protection against electric shock

The provisions of Section 8 of Part 1 apply, together with the following requirement.

The supply voltage of the supporting conductors shall not exceed, for alternating current, 25 V

RMS and for direct current, 60 V ripple-free.
23.13 Endurance tests and thermal tests

The provisions of Section 12 of Part 1 apply, together with the requirements of 23.13.1 and

23.13.2.

23.13.1 The extra-low-voltage lighting system shall be tested in normal operation at 1,06 times

its nominal supply voltage, or at 1,06 times the mean value of its nominal supply voltage range,

with the exception of transformers/convertors or controlgear marked t /t , which shall be tested

w c

at their nominal voltage or at the mean value of the nominal supply voltage range.

Maximum surface temperatures of bare conductors in the output circuit shall not exceed 70 °C.

In the case of insulated conductors, the upper limit is the maximum temperature permitted for

the insulation used.

NOTE For details of t marking, refer to IEC 61347-2-8 or IEC 61558-2-6 as appropriate. For details of t marking,

w c
refer to IEC 61347-2-2 or IEC 61347-2-13 as appropriate.

23.13.2 During the test for abnormal operation, the extra-low-voltage lighting system shall be

operated at a voltage between 0,9 and 1,1 times its nominal supply voltage or nominal supply

voltage range, whichever gives the highest temperature values at the parts mentioned in

Tables 12.3 to 12.5 of Part 1.

Points in the secondary circuit where short circuits can occur shall be short-circuited. In this

connection, the lamps shall be completely inserted into the lampholders.

The maximum surface temperature of the conductors in the output circuit shall not exceed the

temperatures found under normal operating conditions by more than 10 K.
---------------------- Page: 12 ----------------------
IEC 60598-2-23:2020 © IEC 2020 – 11 –
23.14 Resistance to dust, solid objects and moisture
The provisions of Section 9 of Part 1 apply.
23.15 Insulation resistance and electric strength
The provisions of Section 10 of Part 1 apply.
23.16 Resistance to heat, fire and tracking
The provisions of Section 13 of Part 1 apply.
These requirements also apply to the output circuits.
---------------------- Page: 13 ----------------------
– 12 – IEC 60598-2-23:2020 © IEC 2020
Annex A
(informative)
Schedule of amended subclauses containing more serious/critical
requirements which require products to be retested

No requirements of this document are considered more onerous compared with the previous

edition.
---------------------- Page: 14 ----------------------
IEC 60598-2-23:2020 © IEC 2020 – 13 –
Bibliography

IEC 61347-2-8, Lamp controlgear – Part 2-8: Particular requirements for ballasts for fluorescent

lamps
____________
---------------------- Page: 15 ----------------------
– 14 – IEC 60598-2-23:2020 © IEC 2020
SOMMAIRE

AVANT-PROPOS .................................................................................................................. 15

23.1 Domaine d’application .......................................................................................... 17

23.2 Références normatives ......................................................................................... 17

23.3 Termes et définitions ............................................................................................ 17

23.4 Exigences générales d’essais ............................................................................... 19

23.5 Classification ........................................................................................................ 19

23.6 Marquage ............................................................................................................. 19

23.7 Construction ......................................................................................................... 20

23.8 Lignes de fuite et distances d’isolement ............................................................... 21

23.9 Dispositions en vue de la mise à la terre .............................................................. 21

23.10 Bornes et connexions électriques .......................................................................... 22

23.11 Câblage externe et interne ........................................................................

...

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