IEC 60598-2-20:2022

IEC 60598-2-20 ®
Edition 5.0 2022-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Luminaires –
Part 2-20: Particular requirements – Lighting chains

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IEC 60598-2-20 ®
Edition 5.0 2022-01
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Luminaires –
Part 2-20: Particular requirements – Lighting chains
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.40 ISBN 978-2-8322-4239-1

– 2 – IEC 60598-2-20:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
20.1 Scope . 7
20.2 Normative references . 7
20.3 Terms and definitions . 8
20.4 General test requirements . 10
20.5 Classification of luminaires . 10
20.5.1 General . 10
20.5.2 Protection against electric shock . 10
20.5.3 Protection against dust, solid objects and moisture . 10
20.6 Marking . 10
20.6.1 General . 10
20.6.2 Lighting chain marking . 11
20.6.3 Lighting chain and packing packaging marking . 11
20.6.4 Packing Packaging or instructions marking . 11
20.7 Construction . 12
20.7.1 General . 12
20.7.2 Lampholders . 12
20.7.3 Terminal blocks . 12
20.7.4 Terminals and supply connections . 13
20.7.5 Gaskets . 13
20.7.6 Mechanical strength . 13
20.7.7 Lamp bridging devices . 13
20.7.8 Control units and controlgear . 13
20.7.9 Lamp rotation . 14
20.7.10 Lamp insertion/ and withdrawal force . 14
20.7.11 Lamp mechanical requirements . 14
20.7.12 Temporarily installed protected lighting (TPL) chains . 14
20.8 Creepage distances and clearances . 15
20.9 Provisions for earthing . 15
20.10 Terminals . 15
20.11 External and internal wiring . 15
20.11.1 General . 15
20.11.2 Cables for lighting chains . 15
20.11.3 Cord anchorage test . 16
20.11.4 Plugs and cable length . 16
20.11.5 Maximum length of extendable class II lighting chains . 16
20.12 Protection against electric shock . 16
20.12.1 General . 16
20.12.2 Divisible plug . 17
20.12.3 Electrification of decorations . 18
20.12.4 Contacts of push-in lampholders . 18
20.12.5 Blanking plugs . 20
20.13 Endurance tests and thermal tests . 20
20.13.1 General . 20

20.13.2 Test voltage . 20
20.13.3 Lamp bridging devices . 21
20.13.4 Short-circuit test of rectifier . 21
20.14 Resistance to dust, solid objects and moisture . 21
20.15 Insulation resistance and electric strength . 21
20.16 Resistance to heat, fire and tracking . 21
Annex A (normative) Requirements for interconnecting connectors for use in lighting
chains . 23
Bibliography . 25

Figure 1 – Examples of different types of lighting chains . 10
Figure 2 – Example of a connector to a divisible plug for lighting chains . 18
Figure 3 – Example of test device suitable for checking security of lampholder contacts . 20

Table 1 – Cables or cord types for lighting chains . 15
Table 2 – Conductor size for lighting chains . 16

– 4 – IEC 60598-2-20:2022 RLV © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LUMINAIRES –
Part 2-20: Particular requirements – Lighting chains

FOREWORD
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This redline version of the official IEC Standard allows the user to identify the changes made to
the previous edition IEC 60598-2-20:2014. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

IEC 60598-2-20 has been prepared by subcommittee 34D: Luminaires, of IEC technical
committee 34: Lighting. It is an International Standard.
This fifth edition cancels and replaces the fourth edition published in 2014. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) specific provisions for temporarily installed protected lighting (TPL) chains have been
added;
b) new terms and definitions have been added.
The text of this International Standard is based on the following documents:
Draft Report on voting
34D/1646/FDIS 34D/16
...