SIST EN 60598-2-20:1999

SLOVENSKI STANDARD
SIST EN 60598-2-20:1999
01-julij-1999
1DGRPHãþD
SIST EN 60598-2-20:1995
Svetilke - 2-20. del: Posebne zahteve - Svetlobni nizi (IEC 60598-2-20:1996,
spremenjen)
Luminaires - Part 2-20: Particular requirements - Lighting chains (IEC 60598-2-20:1996,
modified)
Leuchten - Teil 2-20: Besondere Anforderungen - Lichtketten
Luminaires - Partie 2-20: Règles particulières - Guirlandes lumineuses
Ta slovenski standard je istoveten z: EN 60598-2-20:1997
ICS:
29.140.40 Svetila Luminaires
SIST EN 60598-2-20:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60598-2-20:1999

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SIST EN 60598-2-20:1999

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SIST EN 60598-2-20:1999

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SIST EN 60598-2-20:1999

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SIST EN 60598-2-20:1999
NORME CEI
IEC
INTERNATIONALE
598-2-20
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1996-02
Luminaires -
Partie 2:
Règles particulières -
Section 20: Guirlandes lumineuses
Luminaires
Part 2:
Particular requirements -
Section 20: Lighting chains
© CEI 1996 Droits de reproduction réservés — Copyright — all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun pro- any form or by any means, electronic or mechanical,
including photocopying and microfilm, without permission
cédé, électronique ou mécanique, y compris la photocopie et
in writing from the publisher.
les microfilms, sans l'accord écrit de l'éditeur.
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• Pour prix, voir catalogue en vigueur
For price, see current cata logue

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SIST EN 60598-2-20:1999
IS 01 Interpretation of subclauses 20.1, 20.5 and 20.6
IEC 60598-2-20: 1996 Second edition
Luminaires - Part 2: Particular requirements
Section 20 - Lighting chains
INTERPRETATION SHEET
The following interpretation was agreed at the Budapest meeting of IEC/SC 34D WG LUMEX
held in April 1997.
20.1 Scope
Introduce the following new note:
4) 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 (and
thereby in the certificate, if any).
20.5 Marking
Add the following requirement in subclause 20.5.1:
f) Lighting chains with non-standardised lamps shall be accompanied by information
indicating that replacement lamps must be of the same type as delivered or of a type
specified by the manufacturer (see 20.5.2).
Add the following new paragraph at the end of subclause 20.5.2:
The information required under item f) of subclause 20.5.1 shall be on the packing.
20.6 Construction
Add the following sentence at the end of the second paragraph of subclause 20.6.1:
In lighting chains where non-standardised lamps (e.g. lamps of the push-in type) are used, the
lamps are regarded as parts of the lighting chain and tested accordingly.

March 2001 ICS 29.140.40 French text overleaf

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SIST EN 60598-2-20:1999
IS 02 Interpretation of subclause 20.6.7
IEC 60598-2-20: 1996 Second edition
Luminaires – Part 2-20: Particular requirements – Lighting chains
INTERPRETATION SHEET
Introduction
The following interpretation was agreed at the Ischia meeting of IEC SC 34D WG LUMEX held
October 2001. It is based on document 34D/LUMEX(LEN)147A, items C and D.
Sub-clause 20.6.7 contains limitations regarding the rated voltage for chains with E5 and E10
lampholders and similar lampholders of the push-in type. Due to a change in IEC 60238 the
limitation for E10 lampholders used in parallel connected chains is no longer justified.
Sub-clause 20.6.7 also contains limitations on the wattage, which due to the changes
implemented by Amendment 2: 2002 to IEC 60598-2-20: 1996, seem to be superfluous. In
Amendment 2 lighting chains fitted with series or parallel or a combination of series/parallel
connected lamps with a rated voltage not exceeding 250 V are accepted. This being the case
there is no technical reason to limit the rated wattage to 50/100 W. The wattage will be limited
by the plug used and the cross sectional area of the cable, i.e. regulated by other clauses in
the standard. The requirement is therefore no longer necessary.
Proposed changes below are indicated by bold text.
Interpretation of 20.6.7
The second indent in the first paragraph should read:
– for series connected E10 and similar small lampholders 60 V
Add the following third indent:
– for parallel connected E10 lampholders 250 V
Delete the second part the first of paragraph containing limitations on the wattage

July 2003 ICS 29.140.40 French text overleaf

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SIST EN 60598-2-20:1999
IS 03 Interpretation of subclause 20.10.1
IEC 60598-2-20: 1996 Second edition
Luminaires – Part 2-20: Particular requirements – Lighting chains
INTERPRETATION SHEET
Introduction
The following interpretation was agreed at the Ischia meeting of IEC SC 34D WG LUMEX held
October 2001. It is based on document 34D/LUMEX(LEN)147A, item F.
There have been problems in interpretation of sub-clause 20.10.1. The following interpretation
is proposed for clarification. Proposed changes below are indicated by bold text.
Interpretation of 20.10.1
Replace the existing text of 20.10.1 by the following:
20.10.1 Subclause 5.2.2 of section 5 of IEC 60598-1 does not apply. Internal and external
cables of lighting chains shall not be lighter than the following:
– for Class II ordinary lighting chains and ordinary sealed 60227 IEC 43
chains 60227 IEC 52*
– for Class II chains other than ordinary, using series- 60245 IEC 57*
connected lampholders
– for Class II chains other than ordinary, using parallel- 60245 IEC 57*
connected lampholders and the connection cable for sealed
lighting chains other than ordinary
– for Class II chains other than ordinary, where the length of 60245 IEC 66
cable between the point of supply and the nearest lampholder
exceeds 3 m – for that part of the cable
– for Class III chains and parts of chains supplied by SELV and 60227 IEC 42*
with a maximum rated wattage exceeding 50 W
–
for Class III chains and parts of chains supplied by SELV Insulation according
and with a maximum rated wattage not exceeding 50 W to 5.3.1 of 60598-1
* The cable may consist of a single core cable provided with a two-layer insulation
corresponding to the specified standard sheet.
Compliance is checked by inspection, measurement and by calculation.
./.

July 2003 ICS 29.140.40 French text overleaf

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SIST EN 60598-2-20:1999
The nominal cross-sectional area of the conductors shall not be less than the following
values:
a) 0,5 mm² for class II lighting chains with E5 or E10 lampholders or other small
lampholders;
b) 0,75 mm ² for class II lighting chains with E14, E27, B15 or B22 lampholders and fitted
with series connected lamps;
c) 1,5 mm² for class II lighting chains with E14, E27, B15 or B22 lampholders and fitted
with parallel connected lamps;
d) 0,5 mm² for class III chains and parts of chains supplied by SELV and with a
maximum rated wattage exceeding 50 W;
e) 0,4 mm² for class III chains and parts of chains supplied by SELV and with a
maximum rated wattage not exceeding 50 W;
f) 1 mm² for the cable between the plug and a sealed chain without joints;
g) 1,5 mm² for the cable between the plug and a sealed chain with joints.
If the maximum rated wattage of class III lighting chains and parts of chains supplied by SELV
is less than 50 W then the conductors of the internal and external cables may have a cross-
2
sectional area of 0,4 mm or less provided that the current-carrying capacity and the
mechanical properties are adequate. If the maximum rated wattage exceeds 50 W, the cables
shall comply with 60227 IEC 42 (see asterisk above). If the wattage is less than 50 W the
insulation of the cables shall comply with the requirements of 5.3.1 of IEC 60598-1.
For sealed chains, the internal conductors may have a cross-sectional area of 0,4 mm 2 or less
provided the current-carrying capacity and the mechanical properties are adequate. In
addition, conductors without insulation are accepted provided adequate precautions have
been taken to ensure maintenance of the minimum creepage distances and clearances and
compliance with the requirements of 5.3.1 of IEC 60598-1.
Compliance is checked by inspection, measurement and calculation.
In the USA cables shall:
– have a minimum insulation thickness of 0,762 mm;
– have a minimum flame rating of VW-1;
– be UV rated;
– have a temperature rating of 105 ºC;
– be rated for indoor and/or outdoor use.

July 2003 ICS 29.140.40 French text overleaf

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SIST EN 60598-2-20:1999
- 3 -
598-2-20 © IEC:1996
CONTENTS
Page
5
FOREWORD
Clause
20.1 Scope 7
20.1.1 Normative references 7
7
20.2 General test requirements
20.3 Definitions 9
20.4 Classification of luminaires 9
9
20.5 Marking
11 20.6 Construction
15
20.7 Creepage distances and clearances
15
20.8 Provisions for earthing
17
20.9 Terminals
17 20.10 External and internal wiring
19
20.11 Protection against electric shock
21
20.12 Endurance tests and thermal tests
23
20.13 Resistance to dust and moisture
23 20.14 Insulation resistance and electric strength
23
20.15 Resistance to heat, fire and tracking
25
Figures
Annex A - Tumbling barrel test 29

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SIST EN 60598-2-20:1999
- 5 -
598-2-20 © IEC:1996
INTERNATIONAL ELECTROTECHNICAL COMMISSION
LUMINAIRES
Part 2: Particular requirements
Section 20: Lighting chains
FOREWORD
The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
1)
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
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. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
The formal decisions or agreements of the IEC on technical matters, express as nearly as possible an
2)
international consensus of opinion on the relevant subjects since each technical committee has
representation from all interested National Committees.
The documents produced have the form of recommendations for international use and are published in the
3)
form of standards, technical reports or guides and they are accepted by the National Committees in that
sense.
In order to promote international unification, IEC National Committees undertake to apply IEC International
4)
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
5)
equipment declared to be in conformity with one of its standards.
Attention is drawn to the possibility that some of the elements of this International Standard may be the
6)
subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 598-2-20 has been prepared by sub-committee 34D:
Luminaires, of IEC technical committee 34: Lamps and related equipment
This second edition cancels and replaces the first edition published in 1982, amendment 1
(1987) and amendment 2 1992). This second edition constitutes a technical revision.
The text of this standard is based on the first edition, amendment 1 and amendment 2,
and the following documents:
Report on voting
FDIS
34 D/398/R V D
34D/381/FDIS
Full information on the voting for the approval of this standard can be found in the report
on voting indicated in the above table.
Annex A is for information only.

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SIST EN 60598-2-20:1999
598-2-20 © IEC:1996 - 7 -
LUMINAIRES
Part 2: Particular requirements
Section 20: Lighting chains
20.1 Scope
This section of IEC 598-2 specifies requirements for lighting chains fitted with series
or parallel connected incandescent lamps for use either indoors or outdoors on supply
voltages not exceeding 250 V. It is to be read in conjunction with those sections of part 1
to which reference is made.
NOTES
1 A Christmas tree chain is an example of a lighting chain fitted with series connected lamps.
A chain for illuminating ski-tracks or promenades is an example of a lighting chain fitted with parallel
connected lamps.
2 For lighting chains fitted with lampholders of the push-in type, the appropriate requirements of this
section apply.
3 In some countries the term "strings" is used instead of "chains".
20.1.1
Normative references
The following normative documents contain provisions which, through reference
in this text, constitute provisions of this section of IEC 598-2. At the time of publication,
the editions indicated were valid. All normative documents are subject to revision, and
parties to agreements based on this section of IEC 598-2 are encouraged to investigate
the possibility of applying the most recent editions of the normative documents indicated
below. Members of IEC and ISO maintain registers of currently valid International
Standards.
IEC 83: 1975,
Plugs and socket-outlets for domestic and similar general use. Standards
IEC 227: Polyvinyl chloride insulated cables of rated voltages up to and including 450/750 V
IEC 238: 1991, Edison screw lampholders
IEC 245: Rubber insulated cables of raged voltages up to and including 450/750 V
IEC 320: 1981, Appliance couplers for household and similar general purposes
CISPR 14: 1993,
Limits and methods of measurement of radio interference characteristics
of household electrical appliances, portable tools and similar electrical apparatus
20.2 General test requirements
The provisions of section 0 of IEC 598-1 apply. The tests described in each appropriate
section of IEC 598-1 shall be carried out in the order listed in this section of IEC 598-2.

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SIST EN 60598-2-20:1999
598-2-20 © IEC:1996 - 9 -
20.3 Definitions
For the purpose of this section, the definitions given in section 1 of IEC 598-1 apply
together with the following definitions:
rewirable lighting chain: A lighting chain so constructed that the components
20.3.1
can be replaced.
20.3.2 non-rewirable lighting chain: A lighting chain so constructed that the components
cannot be separated from the lighting chain without making it permanently useless.
lighting chain enclosed in a rigid or flexible insulating translucent
sealed chain: A
20.3.3
pipe or tube, sealed at the ends and having no joints.
20.4 Classification of luminaires
Luminaires shall be classified in accordance with the provisions of section 2 of IEC 598-1
together with the requirements of 20.4.1 and 20.4.2.
20.4.1 According to the type of protection against electric shock, lighting chains shall be
classified as Class Il or Class Ill.
20.4.2 According to the degree of protection against dust and moisture, lighting chains
for outdoor use shall be classified as "of rain-proof, splash-proof, jet-proof or watertight
construction".
20.5 Marking
provisions of section 3 of IEC 598-1 apply together with the requirements of 20.5.1
To
and 20.5.2.
20.5.1
a) Lighting chains fitted with series-connected lamps shall be marked with the type
reference or the electrical data of the lamps and with the rated voltage of the complete
chain.
b) Lighting chains shall be accompanied by the substance of the following warnings:
1) do not remove or insert lamps while the chain is connected to the supply;
for series-connected lamps, replace failed lamps immediately by lamps of the
2)
same rated voltage and wattage to prevent overheating; this requirement does not
apply to sealed chains;
to the supply while it is in the packing;
3) do not connect the chain
for series-connected lamps where fused lamps are used to ensure compliance
4)
with 20.12.3 hereafter, do not replace a fused lamp with a non-fused lamp [see
item e)].
c) Ordinary lighting chains shall, in addition, be accompanied by the information that
the chain is for indoor use only.

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SIST EN 605
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