Railway applications - Rolling stock - DC supplied electronic ballasts for lighting fluorescent lamps

IEC 62718:2013 specifies the performance and constructional requirements, and associated tests, for d.c. supplied electronic ballasts used to supply fluorescent lamps for lighting on railway rolling stock. Its requirements replace those of IEC 61347 for all railway rolling stock applications and specify and complete those of IEC 61347 for the specific needs of railway rolling stock applications.

Bahnanwendungen - Bahnfahrzeuge - Gleichstromversorgte elektronische Vorschaltgeräte für Leuchtstofflampen

Applications ferroviaires - Matériel roulant - Ballasts électroniques à courant continu pour lampes fluorescentes d'éclairage

La CEI 62718:2013 spécifie les exigences relatives à la construction et aux performances, et les essais correspondants, pour les ballasts électroniques alimentés en courant continu utilisés pour alimenter les lampes fluorescentes pour l'éclairage du matériel roulant ferroviaire. Ses exigences remplacent celles de la CEI 61347 pour toutes les applications sur le matériel roulant ferroviaire; elles précisent et complètent celles de la CEI 61347 pour les besoins spécifiques des applications ferroviaires.

Železniške naprave - Vozna sredstva - Elektronska bremena za fluorescenčne svetilke, napajane z enosmerno napetostjo

Standard IEC 62718:2013 določa zahteve glede lastnosti in konstrukcije ter povezane preskuse za elektronska bremena za fluorescenčne svetilke za osvetljevanje na železniških voznih sredstvih. Njegove zahteve nadomeščajo zahteve standarda IEC 61347 za vsa železniška vozna sredstva in dopolnjujejo zahteve standarda IEC 61347 za posebne potrebe pri železniških voznih sredstvih.

General Information

Status
Published
Publication Date
07-Apr-2016
Current Stage
6060 - Document made available
Due Date
14-Mar-2016

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.UHVFHQþQHBahnanwendungen - Bahnfahrzeuge - Gleichstromversorgte elektronische Vorschaltgeräte für LeuchtstofflampenApplications ferroviaires - Matériel roulant - Ballasts électroniques à courant continu pour lampes fluorescentes d'éclairageRailway applications - Rolling stock - DC supplied electronic ballasts for lighting fluorescent lamps45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineering29.140.99Drugi standardi v zvezi z žarnicamiOther standards related to lampsICS:Ta slovenski standard je istoveten z:EN 62718:2016SIST EN 62718:2016en01-julij-2016SIST EN 62718:2016SLOVENSKI

STANDARDSIST EN 50311:20031DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 62718
April 2016 ICS 45.060
Supersedes
EN 50311:2003
English Version

Railway applications - Rolling stock - DC supplied electronic ballasts for lighting fluorescent lamps (IEC 62718:2013

+ COR1:2016)

Applications ferroviaires - Matériel roulant - Ballasts électroniques à courant continu pour lampes fluorescentes d'éclairage (IEC 62718:2013

+ COR1:2016)

Bahnanwendungen - Bahnfahrzeuge - Gleichstromversorgte elektronische Vorschaltgeräte für Leuchtstofflampen (IEC 62718:2013

+ COR1:2016) This European Standard was approved by CENELEC on 2014-11-24. 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 © 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62718:2016 E SIST EN 62718:2016

EN 62718:2016 2 European foreword This document (EN 62718:2016) consists of the text of IEC 62718:2013 + COR1:2016 prepared by IEC/TC 9 "Electrical equipment and systems for railways".

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) 2016-10-08 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-04-08

This document supersedes EN 50311:2003.

EN 62718:2016 includes the following significant technical changes with respect to EN 50311:2003:

- Sections 8.2.1.3 and 9.3.2.7: the value is extended from “50 Hz” to “50 Hz or 60 Hz”; - Sections 8.2.3.1 and 9.3.4.1: the specified Level (0,7 mA) of leakage current in EN 50311:2003 is omitted, instead of it a reference to the standard (IEC 60598-1:2008, Section 10.3) is noted; - Section 9.3.2.8: Table 3 - Dielectric test voltage values are referenced to IEC 62497-1, this cause an extension of the nominal voltage levels; - Section 9.3.4.1: the values of R and C in Figure 3 (EN 50311:2003 R = 2 000

± 100

C = 112 nF ± 6 nF) are omitted; - new Annex A (informative): Distance between lamp an metallic support (before it was normative in Section 8.2.4.4 of EN 50311:2003); - Annex H from EN 50311:2003 is omitted.

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.

Endorsement notice The text of the International Standard IEC 62718:2013 was approved by CENELEC as a European Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60068-1:1988 NOTE Harmonized as EN 60068-1:1994 1) (not modified). IEC 60081 NOTE Harmonized as EN 60081. IEC 60901:1996 NOTE Harmonized as EN 60901:1996 (not modified). IEC 60927 NOTE Harmonized as EN 60927. IEC 61347-2-7:2011 NOTE Harmonized as EN 61347-2-7:2012 (not modified). CISPR 15:2005 NOTE Harmonized as EN 55015:2006 2) (not modified). CISPR 15:2005/A1:2006 NOTE Harmonized as EN 55015:2006/A1:2007 2) (not modified).

1) Superseded by EN 60068-1:2014 (IEC 60068-1:2013): DOW = 2016-11-11. 2) Superseded by EN 55015:2013 (CISPR 15:2013 + IS1:2013 + IS2:2013): DOW= 2016-06-12. SIST EN 62718:2016

EN 62718:2016 3 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 60068-2-1 2007
Environmental testing -
Part 2-1: Tests - Test A: Cold EN 60068-2-1 2007
IEC 60068-2-2 2007
Environmental testing -
Part 2-2: Tests - Test B: Dry heat EN 60068-2-2 2007
IEC 60068-2-30 2005
Environmental testing -

Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) EN 60068-2-30 2005

IEC 60077-1
(mod) 1999
Railway applications - Electric equipment for rolling stock -
Part 1: General service conditions and general rules EN 60077-1 2002
IEC 60417-DB -
Graphical symbols for use on equipment - -
IEC 60529 1989

Degrees of protection provided by enclosures (IP Code) EN 60529 +corr. May 1991 1993 IEC 60571 2012

Railway applications - Electronic equipment used on rolling stock EN 50155 + corr. May + AC 2007 2010 2012 IEC 60598-1

(mod) 2008
Luminaires -

Part 1: General requirements and tests EN 60598-1 A11 2008 3) 2009 3) IEC 60929 -

AC and/or DC-supplied electronic control gear for tubular fluorescent lamps - Performance requirements EN 60929 -

IEC 61140 -

Protection against electric shock - Common aspects for installation and equipment EN 61140 -

IEC 61347-1
(mod) 2007
Lamp controlgear -

Part 1: General and safety requirements EN 61347-1 2008 4) IEC 61347-2-3 - Lamp controlgear -

Part 2-3: Particular requirements for a.c. and/or d.c. supplied electronic control gear for fluorescent lamps EN 61347-2-3 -

3) Superseded by EN 60598-1:2015 (IEC 60598-1:2014): DOW = 2017-10-20. 4) Superseded by EN 61347-1:2015 (IEC 61347-1:2015): DOW = 2018-03-26. SIST EN 62718:2016

EN 62718:2016 4 Publication Year Title EN/HD Year
IEC 61373 -

Railway applications - Rolling stock equipment - Shock and vibration tests EN 61373 -

IEC 62236-3-2 2008 Railway applications - Electromagnetic compatibility -
Part 3-2: Rolling stock - Apparatus EN 50121-3-2 2006 IEC 62497-1 -
Railway applications - Insulation coordination -

Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment EN 50124-1 -

IEC 62498-1 -
Railway applications - Environmental conditions for equipment -
Part 1: Equipment on board rolling stock EN 50125-1 -
SIST EN 62718:2016

IEC 62718 Edition 1.0 2013-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Railway applications – Rolling stock – DC supplied electronic ballasts for lighting fluorescent lamps

Applications ferroviaires – Matériel roulant – Ballasts électroniques à courant continu pour lampes fluorescentes d'éclairage INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE W ICS 45.060 PRICE CODE CODE PRIX ISBN 978-2-83220-752-9

® 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 62718:2016

– 2 – 62718 © IEC:2013

CONTENTS FOREWORD ........................................................................................................................... 4 INTRODUCTION ..................................................................................................................... 6 1 Scope ............................................................................................................................... 7 2 Normative references ........................................................................................................ 7 3 Terms and definitions ....................................................................................................... 8 3.1 General terms .......................................................................................................... 8 3.2 Lamps and characteristics ....................................................................................... 9 4 Classification .................................................................................................................. 10 5 Characteristics ................................................................................................................ 10 5.1 Rated voltages....................................................................................................... 10 5.2 Overvoltages ......................................................................................................... 10 5.3 Type of fluorescent lamps ...................................................................................... 10 6 Product information ......................................................................................................... 11 6.1 Nature of information ............................................................................................. 11 6.1.1 General ..................................................................................................... 11 6.1.2 Identification .............................................................................................. 11 6.1.3 Characteristics ........................................................................................... 11 6.1.4 Other characteristics and information for installation................................... 11 6.2 Marking ................................................................................................................. 11 6.3 Instructions for storage, installation, operation and maintenance ............................ 12 7 Normal service conditions ............................................................................................... 12 8 Constructional and performance requirements ................................................................ 12 8.1 Constructional requirements .................................................................................. 12 8.1.1 General ..................................................................................................... 12 8.1.2 Dimensions and wiring diagram .................................................................. 12 8.1.3 Terminals .................................................................................................. 12 8.1.4 Provisions for repair ................................................................................... 12 8.1.5 Clearance and creepage distances ............................................................. 13 8.1.6 Protection .................................................................................................. 13 8.1.7 Inrush current ............................................................................................ 13 8.2 Performance requirements ..................................................................................... 13 8.2.1 Electronic ballast parameters in accordance with lamps characteristics ........................................................................................... 13 8.2.2 Exceptional conditions of use ..................................................................... 14 8.2.3 Electronic ballast design requirements ....................................................... 15 8.2.4 Installation requirements ............................................................................ 16 8.3 Safety requirements ............................................................................................... 17 9 Tests .............................................................................................................................. 17 9.1 Test conditions ...................................................................................................... 17 9.1.1 Environmental conditions ........................................................................... 17 9.1.2 Other conditions ........................................................................................ 18 9.2 Kinds of tests ......................................................................................................... 18 9.2.1 Type tests .................................................................................................. 18 9.2.2 Routine tests ............................................................................................. 19 9.2.3 Investigatory tests ...................................................................................... 20 9.3 Verification of constructional and performance requirements .................................. 20 SIST EN 62718:2016

62718 © IEC:2013 – 3 –9.3.1 General ..................................................................................................... 20 9.3.2 Sequence 1 ............................................................................................... 20 9.3.3 Sequence 2 ............................................................................................... 22 9.3.4 Sequence 3 ............................................................................................... 24 9.3.5 Sequence 4 ............................................................................................... 25 9.3.6 Sequence 5 ............................................................................................... 27 Annex A (informative)

Distance between lamp and metallic support ...................................... 29 Annex B (informative)

Electronic ballast for lamps up to 40 W (case 1) ................................. 30 Annex C (informative)

Electronic ballast for lamps up to 40 W (case 2) ................................. 31 Annex D (informative)

Electronic ballast for lamps up to 15 W .............................................. 32 Annex E (informative)

Electronic ballast for lamps up to 20 W............................................... 33 Annex F (informative)

Electronic ballast for lamps up to 10 W ............................................... 34 Annex G (informative)

Basic schematic diagrams ................................................................. 35 Bibliography .......................................................................................................................... 38

Figure 1 – Test circuit ........................................................................................................... 22 Figure 2 – Current limiting curve ............................................................................................ 23 Figure 3 – Circuit for leakage current measurement ............................................................... 24 Figure 4 – Circuit for test B: Cathode deactivated (rectifying effect) ....................................... 26 Figure B.1 – Overall dimensions for electronic ballast ............................................................ 30 Figure C.1 – Overall dimensions for electronic ballast ............................................................ 31 Figure D.1 – Overall dimensions for electronic ballast ............................................................ 32 Figure E.1 – Overall dimensions for electronic ballast ............................................................ 33 Figure F.1 – Overall dimensions for electronic ballast ............................................................ 34 Figure G.1 – One or two tubular lamps .................................................................................. 35 Figure G.2 – One or two tubular lamps .................................................................................. 35 Figure G.3 – One or two tubular lamps .................................................................................. 36 Figure G.4 – One tubular lamp .............................................................................................. 36 Figure G.5 – One tubular lamp .............................................................................................. 36 Figure G.6 – One or two single capped lamps ........................................................................ 36 Figure G.7 – One single capped lamp .................................................................................... 37

Table 1 – Type tests .............................................................................................................. 19 Table 2 – Routine tests ......................................................................................................... 20 Table 3 – Dielectric test voltage values .................................................................................. 22

SIST EN 62718:2016
– 4 – 62718 © IEC:2013
INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________

RAILWAY APPLICATIONS – ROLLING STOCK – DC SUPPLIED ELECTRONIC BALLASTS FOR LIGHTING FLUORESCENT LAMPS

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 62718 has been prepared by IEC technical committee 9: Electrical equipment and systems for railways. This standard is based on EN 50311:2003. The text of this standard is based on the following documents: FDIS Report on voting 9/1769A/FDIS 9/1798/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. SIST EN 62718:2016

62718 © IEC:2013 – 5 –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. The contents of the corrigendum of February 2016 have been included in this copy.

SIST EN 62718:2016
– 6 – 62718 © IEC:2013

INTRODUCTION This International Standard has been developed specifically for railway applications, to supplement the current standards. It covers general safety and performance requirements in addition to or in place of those contained in IEC 61347-1, IEC 61347-2-3 and 61347-2-7. NOTE 1 When applied unchanged, the clauses of IEC 61347 are either referred in this standard or introduced into it if they are short texts. NOTE 2 When a clause of IEC 61347 applies with changes or is replaced by more specific requirements, generally a short note explains the difference or the reason for that. SIST EN 62718:2016

62718 © IEC:2013 – 7 –RAILWAY APPLICATIONS – ROLLING STOCK – DC SUPPLIED ELECTRONIC BALLASTS FOR LIGHTING FLUORESCENT LAMPS

1 Scope This International Standard specifies the performance and constructional requirements, and associated tests, for d.c. supplied electronic ballasts used to supply fluorescent lamps for lighting on railway rolling stock. Its requirements replace those of IEC 61347 for all railway rolling stock applications and specify and complete those of IEC 61347 for the specific needs of railway rolling stock applications. This international standard applies to electronic ballasts – supplying pre-heated cathode fluorescent lamps without integrated starters, tubular or single capped, according to IEC 60081 and IEC 60901 respectively, – having a single and non adjustable luminous flux level. It does not apply to electronic ballasts supplying non pre-heated cathode lamps and/or lamps with integrated starters. 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 60068-2-1:2007, Environmental testing – Part 2-1: Tests – Test A: Cold IEC 60068-2-2:2007, Environmental testing – Part 2-2: Tests – Test B: Dry heat IEC 60068-2-30:2005, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic (12h + 12h cycle) IEC 60077-1:1999, Railway applications – Electric equipment for rolling stock – Part 1: General service conditions and general rules IEC 60417, Graphical symbols for use on equipment – Available from:http/www.graphical-symbols.info/equipment IEC 60529:1989, Degrees of protection provided by enclosures (IP code)1 IEC 60571:2012, Railway applications – Electronic equipment used on rolling stock IEC 60598-1:2008, Luminaries – Part 1: General requirements and tests IEC 60929, AC and/or DC-supplied electronic control gear for tubular fluorescent lamps – Performance requirements IEC 61140, Protection against electric shock – Common aspects for installation and equipment

There is a consolidated edition 2.1 (2001), comprising edition 2 (1989) and Amendment 1 (1999). SIST EN 62718:2016

– 8 – 62718 © IEC:2013

NOTE IEC 60536 was replaced by IEC 61140. IEC 61347-1:2007, Lamp controlgear – Part 1: General and safety requirements2 IEC 61347-2-3, Lamp controlgear – Part 2-3: Particular requirements for a.c. and d.c. supplied electronic controlgear for fluorescent lamps IEC 61373, Railway applications – Rolling stock equipment – Shock and vibration tests IEC 62236-3-2:2008, Railway applications – Electromagnetic compatibility – Part 3-2: Rolling stock – Apparatus IEC 62497-1, Railway applications – Insulation coordination – Part 1: Basic requirements – Clearances and creepage distances for all electrical and electronic equipment IEC 62498-1, Railway applications – Environmental conditions for equipment – Part 1: Equipment on board rolling stock 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 General terms 3.1.1

nominal value a suitable approximate quantity value used to designate or identify a characteristic of a component, device or equipment [SOURCE: IEC 60050-811:1991, 811-11-01] 3.1.2

rated value a quantity value assigned, generally by a manufacturer, for a specified operating condition of a component, device or equipment [SOURCE: IEC 60050-811:1991, 811-11-02] 3.1.3

voltage range

range of supply voltage over which the electronic ballast is intended to be operated [SOURCE: IEC 61347-1:2007, 3.8] 3.1.4

rated voltage voltage declared by the manufacturer to which all the electronic ballast characteristics are related and which is not less than 85 % of the maximum value of the rated voltage range Note 1 to entry: The term « rated voltage » generally used in railway applications has been preferred to « design voltage » defined in 3.7 of IEC 61347-1:2007.

There is a consolidated edition 2.2 (2012), comprising edition 2 (2007), Amendment 1 (2010) and Amendment 2 (2012). SIST EN 62718:2016

62718 © IEC:2013 – 9 –3.1.5

rated maximum operating temperature of a ballast case tc highest permissible temperature which may occur on the outer surface (at the indicated place, if marked) under normal operating conditions and at the rated voltage or maximum of the rated voltage range 3.1.6

type test a test of one or more devices made to a certain design to show that the design meets certain specifications [SOURCE: IEC 60050-811:1991, 811-10-04] 3.1.7

routine test a test to which each individual device is subjected during or after manufacture to ascertain whether it complies with certain criteria [SOURCE: IEC 60050-811:1991, 811-10-05] 3.1.8

sampling test a test on a number of devices taken at random from a batch [SOURCE: IEC 60050-811:1991, 811-10-06] 3.1.9

investigation test a special test of an optional character carried out in order to obtain additional information [SOURCE: IEC 60050-811:1991, 811-10-07] 3.1.10

exposed conductive part any metallic or other form of conductive material which is not energised except in case of failure, and which may be accessible to touch [SOURCE: IEC 61991:2000, 3.2.8] 3.1.11

protective bonding equipotential connection for protective purpose [SOURCE: IEC 61991:2000, 3.2.17] 3.2 Lamps and characteristics 3.2.1

d.c. supplied electronic ballast electronic ballast d.c. to a.c. inverter using semi-conductor devices which may include stabilising elements for supplying power to one or more fluorescent lamps Note 1 to entry: For the purposes of this standard d.c. supplied electronic ballast includes starter and ballast functions. Note 2 to entry: The term « electronic ballast » is more commonly used than d.c. supplied electronic ballast and will be used in this standard. [SOURCE: IEC 61347-1:2007, 3.2.1] SIST EN 62718:2016

– 10 – 62718 © IEC:2013
3.2.2

started fluorescent lamp a fluorescent lamp when a current is crossing the space between the two cathodes 3.2.3

lighted fluorescent lamp a fluorescent lamp emitting light that can be observed visually, uniformly distributed within the space between the two cathodes. A lamp is not lighted when the light emitted is only localised around the cathodes 3.2.4

extinguished fluorescent lamp a fluorescent lamp emitting no light, when visually observed Note 1 to entry: A lamp which emits light around the cathode(s) is not considered as extinguished. 3.2.5

switc
...

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