Luminaires - Part 2-20: Particular requirements - Lighting chains

This part of IEC 60598 specifies requirements for lighting chains fitted with series, parallel or a
combination of series/parallel connected light sources for use either indoors or outdoors on
supply voltages not exceeding 250 V.
For combinations where rope lights (also known as sealed lighting chains) are included, see
IEC 60598-2-21.
Lighting chains provided with fixed or detachable attachments e.g. ornamental or decorative,
are considered to be covered by this standard.
For lighting chains fitted with lampholders of the push-in type, the appropriate requirements of
this standard applies.
NOTE 1 A Christmas tree lighting chain is an example of a lighting chain fitted with series or series/parallel
connected lamps. A chain for illuminating ski-tracks or promenades is an example of a lighting chain fitted with
parallel connected lamps.
For lighting chains with non-standardised lamps (e.g. lamps of the push-in type) the lamps are
regarded as a part of the lighting chain and consequently included in the testing.
NOTE 2 For products where the lighting chain is permanently fixed to a frame or pre-lit Christmas tree the relevant
clauses of IEC 60598-2-4 and/or IEC 60598-2-7 can also apply.
NOTE 3 In some countries the term "strings" is used instead of "chains".
NOTE 4 Candlestick luminaries are tested according to IEC 60598-2-4.

Leuchten - Teil 2-20: Besondere Anforderungen – Lichterketten

Luminaires - Partie 2-20: Exigences particulières - Guirlandes lumineuses

L'IEC 60598-2-20:2014 spécifie les exigences applicables aux guirlandes lumineuses munies de sources lumineuses montées en série, en parallèle ou en combinaison série/parallèle pour emploi à l'intérieur ou à l'extérieur, pour des tensions d'alimentation ne dépassant pas 250 V. Pour les combinaisons contenant des cordons lumineux (également appelés guirlandes lumineuses scellées), voir l'IEC 60598-2-21. Cette quatrième édition annule et remplace la troisième édition (2010). Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente. La principale modification est le retrait des exigences concernant les cordons lumineux (guirlandes lumineuses scellées), ces exigences étant à présent traitées dans l'IEC 60598-2-21.

Svetilke - 2-20. del: Posebne zahteve - Svetlobni nizi (IEC 60598-2-20:2014)

Ta del standarda IEC 60598 določa zahteve za svetlobne nize, opremljene z zaporedno, vzporedno ali
kombinirano zaporedno/vzporedno vezanimi svetlobnimi viri za notranjo ali zunanjo uporabo z napajalno napetostjo največ 250 V.
Za kombinacije, ki vključujejo viseče svetilke (znane tudi kot zaprti svetlobni nizi), glej standard IEC 60598-2-21.
Ta standard zajema svetlobne nize s priloženimi fiksnimi ali odstranljivimi pritrdili (npr. za okrasne ali dekorativne namene).
Za svetlobne nize s potisnimi okovi za sijalke se uporabljajo ustrezne zahteve tega standarda.
OPOMBA 1: Svetlobni niz za osvetlitev božičnega drevesa je primer svetlobnega niza, opremljenega z zaporedno ali zaporedno/vzporedno vezanimi sijalkami. Niz za osvetlitev smučišč ali sprehajališč je primer svetlobnega niza, opremljenega z vzporedno vezanimi sijalkami.
Za svetlobne nize z nestandardiziranimi sijalkami (npr. potisne sijalke) se sijalke obravnavajo kot del svetlobnega niza in so zato vključene v postopek preskušanja.
OPOMBA 2: Za proizvode, pri katerih je svetlobni niz trajno pritrjen na okvir ali predhodno osvetljeno božično drevo, se lahko uporabljajo tudi ustrezne točke standardov IEC 60598-2-4 in/ali IEC 60598-2-7.
OPOMBA 3: V nekaterih državah se namesto izraza »niz« uporablja izraz »veriga«.
OPOMBA 4: Svečne svetilke so preskušene v skladu s standardom IEC 60598-2-4.

General Information

Status
Published
Publication Date
17-May-2015
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Feb-2015
Due Date
18-Apr-2015
Completion Date
18-May-2015

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Svetilke - 2-20. del: Posebne zahteve - Svetlobni nizi (IEC 60598-2-20:2014)Luminaires - Part 2-20: Particular requirements - Lighting chains29.140.40SvetilaLuminairesICS:Ta slovenski standard je istoveten z:EN 60598-2-20:2015SIST EN 60598-2-20:2015en01-junij-2015SIST EN 60598-2-20:2015SLOVENSKI

STANDARDSIST EN 60598-2-20:20101DGRPHãþD
SIST EN 60598-2-20:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 60598-2-20
January 2015 ICS 29.140.40
Supersedes EN 60598-2-20:2010
English Version
Luminaires -
Part 2-20: Particular requirements - Lighting chains (IEC 60598-2-20:2014)
Luminaires -

Partie 2-20: Exigences particulières - Guirlandes lumineuses (IEC 60598-2-20:2014)

Leuchten -

Teil 2-20: Besondere Anforderungen - Lichterketten (IEC 60598-2-20:2014) This European Standard was approved by CENELEC on 2014-12-30. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization

Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,

B-1000 Brussels © 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 60598-2-20:2015 E SIST EN 60598-2-20:2015

EN 60598-2-20:2015 - 2 - Foreword The text of document 34D/1145/FDIS, future edition 4 of IEC 60598-2-20, prepared by SC 34D “Luminaires” of IEC/TC 34 “Lamps and related equipment” was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 60598-2-20:2015.

The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-09-30 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-12-30

This document supersedes EN 60598-2-20:2010.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.

This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).

Endorsement notice The text of the International Standard IEC 60598-2-20:2014 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated:

IEC 60598-2-21 NOTE Harmonized as EN 60598-2-21. SIST EN 60598-2-20:2015
- 3 - EN 60598-2-20:2015 Annex ZA (normative)

Normative references to international publications with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu

Publication Year Title EN/HD Year
IEC 60227-5 2011

Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V - Part 5: Flexible cables (cords) - -

IEC 60238 -
Edison screw lampholders EN 60238 -

IEC 60245-4 2011 Rubber insulated cables - Rated voltages up to and including 450/750 V -

Part 4: Cords and flexible cables - -

IEC 60320 Series Appliance couplers for household and similar general purposes EN 60320 Series

IEC 60529 -
Degrees of protection provided by enclosures (IP Code) EN 60529 -
IEC 60598-1 -
Luminaires -
Part 1: General requirements and tests EN 60598-1 -
IEC 60906 Series IEC system of plugs and socket-outlets
for household and similar purposes - -
IEC 61184 -
Bayonet lampholders EN 61184 -
IEC 61347-2-11 -
Lamp controlgear -

Part 2-11: Particular requirements for miscellaneous electronic circuits used with luminaires EN 61347-2-11 -

IEC 61347-2-13 -
Lamp controlgear -
Part 2-13: Particular requirements
for d.c. or a.c. supplied electronic controlgear for LED modules EN 61347-2-13 -
IEC 61984 2008
Connectors - Safety requirements and tests EN 61984 2009
ISO 4046-4 2002
Paper, board, pulps and related terms - Vocabulary -
Part 4: Paper and board grades and converted products - -
SIST EN 60598-2-20:2015
SIST EN 60598-2-20:2015

IEC 60598-2-20 Edition 4.0 2014-11 INTERNATIONAL STANDARD NORME INTERNATIONALE Luminaires –

Part 2-20: Particular requirements – Lighting chains
Luminaires –
Partie 2-20: Exigences particulières – Guirlandes lumineuses

INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 29.140.40 PRICE CODE CODE PRIX ISBN 978-2-8322-1940-9

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale ®

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. SIST EN 60598-2-20:2015

– 2 – IEC 60598-2-20:2014 © IEC 2014

CONTENTS FOREWORD ........................................................................................................................... 4 20.1 Scope .......................................................................................................................... 6 20.2 Normative references ................................................................................................... 6 20.3 Terms and definitions .................................................................................................. 7 20.4 General test requirements ............................................................................................ 7 20.5 Classification of luminaires .......................................................................................... 7 20.5.1 General ............................................................................................................ 7 20.5.2 Protection against electric shock ...................................................................... 7 20.5.3 Protection against dust, solid objects and moisture ........................................... 8 20.6 Marking ....................................................................................................................... 8 20.6.1 General ............................................................................................................ 8 20.6.2 Lighting chain marking ...................................................................................... 8 20.6.3 Lighting chain and packing marking .................................................................. 8 20.6.4 Packing or instruction marking .......................................................................... 8 20.7 Construction ................................................................................................................ 9 20.7.1 General ............................................................................................................ 9 20.7.2 Lampholders .................................................................................................... 9 20.7.3 Terminal blocks .............................................................................................. 10 20.7.4 Terminals and supply connections .................................................................. 10 20.7.5 Gaskets ......................................................................................................... 10 20.7.6 Mechanical strength ....................................................................................... 10 20.7.7 Lamp bridging devices .................................................................................... 10 20.7.8 Control units ................................................................................................... 10 20.7.9 Lamp rotation ................................................................................................. 11 20.7.10 Lamp insertion/withdrawal force ...................................................................... 11 20.7.11 Lamp mechanical requirements ...................................................................... 11 20.8 Creepage distances and clearances ........................................................................... 12 20.9 Provisions for earthing ............................................................................................... 12 20.10 Terminals .................................................................................................................. 12 20.11 External and internal wiring ........................................................................................ 12 20.11.1 General .......................................................................................................... 12 20.11.2 Cables for lighting chains ............................................................................... 12 20.11.3 Cord anchorage test ....................................................................................... 13 20.11.4 Plugs and cable length ................................................................................... 13 20.11.5 Maximum length of extendable class II lighting chains ..................................... 13 20.12 Protection against electric shock ................................................................................ 13 20.12.1 General .......................................................................................................... 13 20.12.2 Divisible plug .................................................................................................. 13 20.12.3 Electrification of decorations ........................................................................... 14 20.12.4 Contacts of push-in lampholders ..................................................................... 14 20.12.5 Blanking plugs ................................................................................................ 15 20.13 Endurance tests and thermal tests ............................................................................. 15 20.13.1 General .......................................................................................................... 15 20.13.2 Test voltage ................................................................................................... 15 20.13.3 Lamp bridging devices .................................................................................... 16 SIST EN 60598-2-20:2015

IEC 60598-2-20:2014 © IEC 2014 – 3 – 20.13.4 Short-circuit test of rectifier ............................................................................ 16 20.14 Resistance to dust, solid objects and moisture ........................................................... 16 20.15 Insulation resistance and electric strength .................................................................. 16 20.16 Resistance to heat, fire and tracking .......................................................................... 17 Annex A (normative)

Requirements for interconnecting

connectors for use in lighting chains ................................................................................................................................... 18 Bibliography .......................................................................................................................... 20

Figure 1 – Example of a connector to a divisible plug for lighting chains ................................. 14 Figure 2 – Example of test device suitable for

checking security of lampholder contacts ....... 15

Table 1 – Cables for lighting chains ....................................................................................... 12

SIST EN 60598-2-20:2015
– 4 – IEC 60598-2-20:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
LUMINAIRES –
Part 2-20: Particular requirements –
Lighting chains

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. International Standard IEC 60598-2-20 has been prepared by subcommittee 34D: Luminaires, of IEC technical committee 34: Lamps and related equipment. This fourth edition cancels and replaces the third edition (2010).

This edition includes the following significant technical changes with respect to the previous edition, where the requirements for rope lights (sealed lighting chains) have been removed and are now dealt with in IEC 60598-2-21. SIST EN 60598-2-20:2015

IEC 60598-2-20:2014 © IEC 2014 – 5 – The text of this standard is based on the following documents: FDIS Report on voting 34D/1145/FDIS 34D/1153/RVD

Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This standard is intended to be read in conjunction with IEC 60598-1 Luminaires – Part 1: General requirements and tests.

In this standard, the following print types are used: – requirements: in roman type; – test specifications: in italic type; – notes: in small roman type. A list of all the parts in the IEC 60598 series, published under the general title Luminaires can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be

• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
SIST EN 60598-2-20:2015
– 6 – IEC 60598-2-20:2014 © IEC 2014
LUMINAIRES –
Part 2-20: Particular requirements –
Lighting chains

20.1 Scope This part of IEC 60598 specifies requirements for lighting chains fitted with series, parallel or a combination of series/parallel connected light sources for use either indoors or outdoors on supply voltages not exceeding 250 V. For combinations where rope lights (also known as sealed lighting chains) are included, see IEC 60598-2-21. Lighting chains provided with fixed or detachable attachments e.g. ornamental or decorative, are considered to be covered by this standard.

For lighting chains fitted with lampholders of the push-in type, the appropriate requirements of this standard applies. NOTE 1 A Christmas tree lighting chain is an example of a lighting chain fitted with series or series/parallel connected lamps.

A chain for illuminating ski-tracks or promenades is an example of a lighting chain fitted with parallel connected lamps. For lighting chains with non-standardised lamps (e.g. lamps of the push-in type) the lamps are regarded as a part of the lighting chain and consequently included in the testing. NOTE 2 For products where the lighting chain is permanently fixed to a frame or pre-lit Christmas tree the relevant clauses of IEC 60598-2-4 and/or IEC 60598-2-7 can also apply. NOTE 3 In some countries the term "strings" is used instead of "chains". NOTE 4 Candlestick luminaries are tested according to IEC 60598-2-4.

20.2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60227-5:2011, Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V – Part 5: Flexible cables (cords) IEC 60238, Edison screw lampholders IEC 60245-4:2011, Rubber insulated cables – Rated voltages up to and including 450/750 V – Part 4: Cords and flexible cables IEC 60320 (all parts), Appliance couplers for household and similar general purposes IEC 60529, Degrees of protection provided by enclosures (IP Code) IEC 60598-1, Luminaires – Part 1: General requirements and tests SIST EN 60598-2-20:2015

IEC 60598-2-20:2014 © IEC 2014 – 7 – IEC 60906 (all parts), IEC System of plugs and socket-outlets for household and similar purposes IEC 61184, Bayonet lampholders IEC 61347-2-11, Lamp controlgear – Part 2-11: Particular requirements for miscellaneous electronic circuits used with luminaires IEC 61347-2-13, Lamp controlgear – Part 2-13: Particular requirements for d.c. or a.c. supplied electronic controlgear for LED modules IEC 61984:2008, Connectors – Safety requirements and tests ISO 4046-4:2002, Paper, board, pulps and related terms – Vocabulary – Part 4: Paper and board grades and converted products 20.3 Terms and definitions For the purpose of this document, the terms and definitions given in IEC 60598-1 as well as the following apply. 20.3.1

lighting chain luminaire comprising an assembly of series-connected lamps, parallel-connected lamps or series/parallel-connected lamps and interconnecting insulated conductors Note 1 to entry: For lighting chains with non-standardised lamps (e.g. lamps of the push-in type) the lamps are regarded as part of the chain. Note 2 to entry: For lighting chains with non-removable lamps, the lamps are regarded as part of the chain. Note 3 to entry: A lighting chain may incorporate control devices (e.g. flasher units, see 20.7.8). Note 4 to entry: Unless otherwise stated, references to lamps within this standard also refer to LEDs. 20.3.2

rope light sealed lighting chain

lighting chain with non-replaceable light sources enclosed in a rigid or flexible insulating translucent pipe or tube, sealed at the ends, with or without joints Note 1 to entry: Covered by IEC 60598-2-21. 20.4 General test requirements The provisions of Section 0 of IEC 60598-1 apply. The tests described in each appropriate section of IEC 60598-1 shall be carried out in the order listed in this part of IEC 60598. 20.5 Classification of luminaires 20.5.1 General Lighting chains shall be classified in accordance with the provisions of Section 2 of IEC 60598-1 together with the requirements of 20.5.2 and 20.5.3. 20.5.2 Protection against electric shock Lighting chains shall be classified as Class II or Class III. SIST EN 60598-2-20:2015

– 8 – IEC 60598-2-20:2014 © IEC 2014

20.5.3 Protection against dust, solid objects and moisture Lighting chains for outdoor use shall have a protective index IP 44 or higher.

20.6 Marking 20.6.1 General The provisions of Section 3 of IEC 60598-1 apply together with the requirements of 20.6.2 to 20.6.4. 20.6.2 Lighting chain marking The following information shall be marked on the lighting chain: – rated voltage of the complete chain; – rated wattage of the complete chain. Where the information is on the cable, it shall be marked on a durable non-removable sleeve or label.

20.6.3 Lighting chain and packing marking The following marking shall be placed on the lighting chain and on the accompanying packing of lighting chains for indoor use only.

– “FOR INDOOR USE ONLY”. – As an alternative to the text, the lighting chain can be marked with the symbol

[SOURCE: IEC 60417-5957 (2004-12)]. The symbol shall be explained in the instructions. NOTE In some countries (UK and Australia) national requirements are such that a plug must be fitted to a portable appliance. In situations where this plug does not provide the same ingress protection of the lighting chain information concerning the location of the plug/transformer may be given e.g. "Plug/transformer for indoor use only". 20.6.4 Packing or instruction marking The following or similar marking shall be placed on the accompanying packing or instructions. a) For all lighting chains where the packing has not been adapted for display purposes: – “Do not connect the chain to the supply while it is in the packing”. b) For lighting chains with replaceable lamps: – voltage and wattage or manufacturer's article number of replacement lamps; – “Do not remove or insert lamps while the chain is connected to the supply”; – “Ensure that all lampholders are fitted with a lamp”. c) Lighting chains designed to be used without a lamp in every lampholder:

– adequate information about required blanking plug(s). d) For chains with replaceable series-connected lamps:

– “Replace failed lamps immediately by lamps of the same type as delivered or of a type specified by the manufacturer”. e) For lighting chains with ‘fuse’ lamp(s):

– “Do not replace a ‘fuse’ lamp with a non-’fuse’ lamp”; in order to indicate the difference from ‘ordinary’ lamps, ‘fuse’ lamps shall be partly coloured white; – information indicating that the chain is provided with ‘fuse’ lamps and explanation of their function. SIST EN 60598-2-20:2015

IEC 60598-2-20:2014 © IEC 2014 – 9 – f) For lighting chains with non-replaceable lamps: – “The lamps are not replaceable”. g) For class II lighting chains with non-replaceable lamps, the substance of the following:

– where breakage or damage to lamps occurs the chain must not be used/energised but disposed of safely. h) For lighting chains which rely on gaskets to provide the specified degree of protection against dust, solid objects and moisture: – “WARNING – THIS LIGHTING CHAIN MUST NOT BE USED WITHOUT ALL GASKETS BEING IN PLACE” i) For lighting chains intended for interconnection:

– “Do not interconnect parts of this lighting chain with parts of another manufacturer's lighting chain”; – “Interconnection shall be made only by the use of the supplied connectors. Any open ends must be sealed-off before use”; – maximum system length that may be interconnected; – maximum number of lamps or max system wattage that may be interconnected. j) For lighting chains incorporating lamp bridging device(s): – information stating that the chain is fitted with a bridging device(s). k) For class III lighting chains delivered without a supply source: – relevant information concerning the required supply source. l) For mains voltage lighting chains with series connected lamps: – “WARNING – RISK OF ELECTRIC SHOCK IF LAMPS ARE BROKEN OR MISSING. DO NOT USE” 20.7 Construction 20.7.1 General The provisions of Section 4 of IEC 60598-1 apply together with the requirements of 20.7.2 to 20.7.11 20.7.2 Lampholders In lighting chains where non-standardised lampholders (e.g. of the push-in type) are used, the lampholders are regarded as parts of the lighting chain and tested accordingly. Edison screw lampholders E5, E10, E14 and E27 shall meet the requirements of IEC 60238. Bayonet lampholders shall meet the requirements of IEC 61184. Insulation piercing terminals on lampholders are acceptable only if used in the SELV circuit of lighting chains or as permanent, non-rewireable connections in class II chains. E5 and E10 lampholders and similar small lampholders of the push-in type shall be used only if the rated voltage of each lamp does not exceed: – for E5 and similar small lampholders

25 V – for series connected E10 lampholders

60 V – for parallel connected E10 lampholders 250 V Compliance is checked by inspection. SIST EN 60598-2-20:2015

– 10 – IEC 60598-2-20:2014 © IEC 2014

Lampholders shall have a body of insulating material. Compliance is checked by inspection. 20.7.3 Terminal blocks Clause 4.6 of Section 4 of IEC 60598-1 referring to terminal blocks does not apply. 20.7.4 Terminals and supply connections Clause 4.7 of Section 4 of IEC 60598-1 referring to terminals and supply connections applies together with the following requirement. Interconnecting connectors for lighting chains shall, in addition, comply with the requirements and modifications given in Annex A. Compliance is checked by inspection and by carrying out the tests of this standard. 20.7.5 Gaskets Gaskets used to provide the specified degree of protection against dust, solid objects and moisture of lighting chains for outdoor use shall be weather resistant. Such gaskets shall remain in place on the chain when the lamp is removed and shall fit tightly round the inserted lamp. Compliance is checked by inspection and by manual test. NOTE A test to verify the weather resistance of gaskets is under consideration. 20.7.6 Mechanical strength Compliance with the mechanical strength requirements of Clause 4.13 of Section 4 of IEC 60598-1 for Edison screw lampholders and small lampholders of the push-in type shall be checked by the tests given in Clause 15 of IEC 60238. The free fall test specified for E5 and E10 lampholders shall also apply for push-in lampholders. For bayonet lampholders, the tests in Clause 15 of IEC 61184 apply. The tests are made on three samples of the lampholder without the lamp inserted. After the test, the relevant compliance requirements of Clause 4.13 of Section 4 of IEC 60598-1 shall be met. Accessories, for example plugs, interconnecting connectors, etc. incorporated in a lighting chain shall comply with the mechanical requirements of 4.13.6 of IEC 60598-1. 20.7.7 Lamp bridging devices Protection against electric shock and fire shall not be impaired when devices for bridging lamp filaments in series connected chains are functioning. Compliance is checked by inspection and, where appropriate, by the test of 20.13.3 20.7.8 Control units Control units and similar devices forming an integral part of the lighting chain, shall be enclosed in non-flammable insulating material. In addition they shall be securely fixed to the cable of the chain. SIST EN 60598-2-20:2015

IEC 60598-2-20:2014 © IEC 2014 – 11 – Compliance is checked by inspection and, for the non-flammabilit

...

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