SIST EN 50311:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.RUHVFHQþQHBahnanwendungen - Schienenfahrzeuge - Gleichstromversorgte elektronische Vorschaltgeräte für LeuchtstofflampenApplications ferroviaires - Matériel roulant - Ballasts électroniques à courant continu pour lampes fluorescentes d'éclairageRailway applications - Rolling stock - D.C. supplied electronic ballasts for lighting fluorescent lamps29.140.99Drugi standardi v zvezi z žarnicamiOther standards related to lampsICS:Ta slovenski standard je istoveten z:EN 50311:2003SIST EN 50311:2003en01-december-2003SIST EN 50311:2003SLOVENSKI
STANDARD



SIST EN 50311:2003



EUROPEAN STANDARD
EN 50311 NORME EUROPÉENNE EUROPÄISCHE NORM
June 2003 CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50311:2003 E
ICS 29.140.99
English version
Railway applications – Rolling stock – D.C. supplied electronic ballasts
for lighting fluorescent lamps
Applications ferroviaires – Matériel roulant – Ballasts électroniques à courant continu pour lampes fluorescentes d'éclairage
Bahnanwendungen – Schienenfahrzeuge – Gleichstromversorgte elektronische Vorschaltgeräte für Leuchtstofflampen
This European Standard was approved by CENELEC on 2002-12-03. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
SIST EN 50311:2003



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Foreword
This European Standard was prepared by SC 9XB, Electromechanical material on board of rolling stock, of the Technical Committee CENELEC TC 9X, Electrical and electronic applications for railways.
The text of the draft was submitted to the formal vote and was approved by CENELEC as EN 50311 on 2002-12-03.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-12-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-12-01
Annexes designated “informative” are given for information only. In this standard, Annexes A to H are informative. ______________
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Contents Page Introduction.4 1 Scope.4 2 Normative references.4 3 Definitions.6 3.1 General terms.6 3.2 Lamps and characteristics.7 4 Classification.8 5 Characteristics.8 5.1 Rated voltages.8 5.2 Overvoltages.8 5.3 Type of fluorescent lamps.9 6 Product information.9 6.1 Nature of information.9 6.2 Marking.10 6.3 Instructions for storage, installation operation and maintenance.10 7 Normal service conditions.10 7.1 Temperature.10 7.2 Other conditions.10 8 Constructional and performance requirements.10 8.1 Constructional requirements.10 8.2 Performance requirements.11 8.3 Safety requirements.15 9 Tests.16 9.1 Test conditions.16 9.2 Kinds of tests.16 9.3 Verification of constructional and performance requirements.18 Annex A (informative) Types of lamps.27 Annex B (informative) Electronic ballast for lamps up to 40 W.28 Annex C (informative) Electronic ballast for lamps up to 40 W.29 Annex D (informative) Electronic ballast for lamps up to 15 W.30 Annex E (informative) Electronic ballast for lamps up to 10 W.31 Annex F (informative) Electronic ballast for lamps up to 10 W.32 Annex G (informative) Basic schematic diagrams.33 Annex H (informative) Correspondence with EN 60924 requirements.36 SIST EN 50311:2003



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Introduction Environmental conditions and general requirements for electronics for rolling stock are given by the following standards EN 50125-1 and EN 50155. This 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 EN 60925 and EN 60924. NOTE 1 When applied unchanged the clauses of EN 60924 are either referred in this standard or introduced into if they are short texts. NOTE 2 When a clause of EN 60924 applies with changes or is replaced by more specific requirements generally a short note explains the difference or the reason for that. NOTE 3 Annex H gives clause by clause correspondence between EN 60924 and this standard. NOTE 4 EN 60924 will be replaced by EN 61347-1, EN 61347-2-4, EN 61347-2-5, EN 61347-2-6 and EN 61347-2-7. 1 Scope This 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 EN 60925 for all railway rolling stock applications and precise and complete those of EN 60924 for the specific needs of railway rolling stock applications. This standard applies to electronic ballasts - supplying pre-heated cathode fluorescent lamps without integrated starters, tubular or single capped, according to EN 60081 and EN 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 This European Standard incorporates by dated or undated references, provisions from other publications. These normative references are cited at the appropriate place in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 45545-5 1)
Railway applications - Fire protection on railway vehicles Part 5: Fire safety requirements for electrical equipment including that of trolley buses, track guided buses and magnetic levitation vehicles EN 50121-3-2 2000 Railway applications - Electromagnetic compatibility Part 3-2: Rolling stock - Apparatus EN 50124-1
Railway applications - Insulation coordination Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipment EN 50125-1
Railway applications - Environmental conditions for equipment Part 1: Equipment on board rolling stock
1) At draft stage. SIST EN 50311:2003



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EN 50153
Railway applications - Rolling stock - Protective provisions relating to electrical hazards EN 50155 1995 2) Railway applications - Electronic equipment used on rolling stock EN 55015 1996 3) Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment EN 60068-1 1994 Environmental testing
Part 1: General and guidance
(IEC 60068-1:1998 + corr. Oct. 1998 + A1:1992) EN 60068-2-1 1993 Part 2: Tests - Tests A: Cold
(IEC 60068-2-1:1990) EN 60068-2-2 1994 Part 2: Tests - Tests B: Dry heat
(IEC 60068-2-2:1974 + IEC 60068-2-2A:1976) EN 60068-2-30 1999 Part 2: Tests - Test Db and guidance: Damp heat, cyclic (12 + 12 hour cycle) (IEC 60068-2-30:1980 + A1:1985) EN 60077-1 2002 Railway applications - Electric equipment for rolling stock Part 1: General service conditions and general rules (IEC 60077-1:1999, modified) EN 60081
Double-capped fluorescent lamps - Performance specifications (IEC 60081) EN 60417-1 1999 Graphical symbols for use on equipment - Part 1: Overview and application (IEC 60417-1:1998) EN 60529 1991 Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN 60901 1996 Single-capped fluorescent lamps - Performance specifications (IEC 60901:1996) EN 60924 19914) D.C. supplied electronic ballasts for tubular fluorescent lamps - General and safety requirements (IEC 60924:1990) EN 60925 1991 D.C. supplied electronic ballasts for tubular fluorescent lamps - Performance requirements (IEC 60925:1989) EN 60927 1996 Auxiliaries for lamps - Starting devices (other than glow starters) - Performance requirements (IEC 60927:1996) EN 61373
Railway applications - Rolling stock equipment - Shock and vibration tests (IEC 61373) IEC 60050-811
International electrotechnical vocabulary – Chapter 811: Electric traction ISO 2859-1
Sampling procedures for inspection by attributes - Part 1: Sampling plans indexed by acceptable quality level (AQL) for lot-by-lot inspection
2) A new edition of EN 50155 was published in 2001 (dow = 2003-08-01). 3) A new edition of EN 55015 was published in 2000 (dow = 2003-08-01). 4) To be superseded by EN 61347-1:2001, EN 61347-2-4:2001, EN 61347-2-5:2001, EN 61347-2-6:2001 and EN 61347-2-7:2001 (dow = 2003-11-01). SIST EN 50311:2003



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3 Definitions For the purposes of this standard, the following definitions apply. NOTE Most of the definitions listed in this clause are taken unchanged from the International Electrotechnical Vocabulary (IEC 60050) or from an European Standard. When this is the case, the reference is given in brackets with the title. Where relevant, the IEV chapter reference is indicated by the first group of 3 figures. 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 [IEC 60050 (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 [IEC 60050 (811-11-02)] 3.1.3 rated voltage range
range of supply voltage over which the electronic ballast is intended to be operated [EN 60924] 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 The term of « rated voltage » generally used in railway applications has been preferred to « design voltage » defined in EN 60924. 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 [EN 60924] 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 [IEC 60050 (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 [IEC 60050 (811-10-05)] SIST EN 50311:2003



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3.1.8 sampling test a test on a number of devices taken at random from a batch [IEC 60050 (811-10-06)] 3.1.9 investigation test a special test of an optional character carried out in order to obtain additional information [IEC 60050 (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 [EN 50153] 3.1.11 protective bonding equipotential connection for protective purpose [EN 50153] 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 [EN 60924] NOTE 1 For the need of this standard d.c. supplied electronic ballast includes starter and ballast functions. NOTE 2 The term of « electronic ballast » is more commonly used than d.c. supplied electronic ballast and will be used in this standard. 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 A lamp which emits light around the cathode(s) is not considered as extinguished. 3.2.5 switching cycle the complete power cycle between extinguished, started, lighted and extinguished states SIST EN 50311:2003



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4 Classification Electronic ballasts are classified according to parameters determined by the performance required and the mechanical characteristics. These parameters which may be chosen or specified by the purchaser are the following: - nominal supply voltage; - number and type (power) of lamps; - temperature operating class; - bare or housed ballast; - size and fixations; - wiring diagram; - type of terminals. Other requirements (e.g. special length cables, burn-in, etc.) shall be defined by the purchaser. 5 Characteristics 5.1 Rated voltages Rated voltages and rated voltage ranges defined in 7.1.5 of EN 50155 for each of the nominal voltage are given in Table 1.
Table 1 - Rated voltages and rated voltage ranges according to nominal voltages Nominal voltages Rated voltages Rated voltage ranges
Minimum Maximum V V V V 24 27,6 16,8 32 26,5 a 30,5 18,5 35 36 41,4 25,2 48 48 55,2 33,6 64 72 82,8 50,4 96 96 110,4 67,2 128 110 126,5 77 147 NOTE For maintenance of existing rolling stock, other nominal voltage values and widened ranges should be agreed between user and manufacturer. a The nominal voltage of 26,5 V is due to special combinations of battery cells in use.
5.2 Overvoltages Electronic ballasts shall withstand supply overvoltages as defined in EN 50155. SIST EN 50311:2003



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5.3 Type of fluorescent lamps The manufacturer shall declare the types of lamps for which the ballast is designed and, from these types, those which shall be considered as reference for design and used for testing the ballast. Informative Annex A lists
the most commonly used types of lamps in the railway field. 6 Product information 6.1 Nature of information The following information, which includes that required by EN 60924 when appropriate, shall be given by the manufacturer. 6.1.1 Identification - manufacturer’s name or trademark; - mode number or type reference of the manufacturer; - modification status given by letters or figures (e.g. A, B, C . to tick off). 6.1.2 Characteristics - rated voltage and voltage range; - all possible wiring diagrams showing and identifying the terminals; - open circuit voltage; - temperature operating class; NOTE Temperature operating class has been preferred to rated maximum operating temperature (tc), (see 8.2.1.5). - symbol for earthing (protective bonding to the car body) as applicable; graphic symbol
EN 60417-1; - reference to this standard (instead of category defined in Clause 5 of EN 60924); - type and nominal value of replaceable fuse, if any. 6.1.3 Other characteristics and information for installation In addition to the above mandatory markings, the following information, if applicable, shall be given either on the electronic ballast or be made available in the manufacturer’s catalogue or the like: - nominal working frequency lamp operation and its range; - mechanical characteristics; - weight; - installation recommendation such as - type of cable and wiring between electronic ballast and lamp, - type of terminals, etc. - rated input withstand voltage; - supplementary information if required. SIST EN 50311:2003



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6.2 Marking All relevant information, as detailed in 6.1.1 and 6.1.2, shall be marked on the nameplate, away from the base plate and preferably on top of the electronic ballast. Marking shall be indelible and easily legible. Test of compliance is describe in 7.2 of EN 60924. The symbol for earthing (protective bonding) shall be marked as close as possible to the earth terminal or one of the bolted fixation, if they are used as such. It may be marked away from
the nameplate but shall not be marked on screws or other easily removable parts. It shall be visible after installation. For traceability, markings shall also contain at least one of the following: - the manufacturing serial number; - the manufacturing date; - the code of manufacturing. It is preferred that all markings are placed
on a nameplate. The nameplate shall not be conductive, if only stuck. 6.3 Instructions for storage, installation operation and maintenance Only instructions needed to comply with the requirements shall be given by the manufacturer. Any other instructions are at the manufacturer’s discretion. 7 Normal service conditions Where relevant, requirements of Clause 2 and Clause 3 of EN 50155, which refers to EN 50125-1, shall apply with the following additions. 7.1 Temperature The ambient air temperature surrounding the electronic ballast and the lamp(s) shall be - either -25 °C to +55 °C for an operating class T1 of EN 50155, - or -40 °C to +55 °C for an operating class T2 of EN 50155, - or -25 °C to +70 °C for an operating class T3 of EN 50155, - or -40 °C to +70 °C for an operating class Tx of EN 50155. The ambient temperature for storage purposes shall be between -40 °C and +85 °C. 7.2 Other conditions NOTE Electronic ballasts are always installed inside the vehicle and therefore protected from external conditions such as rain, snow, hail, ice, etc., but they may be subject to the moisture from condensation. 8 Constructional and performance requirements 8.1 Constructional requirements Construction shall comply with the constructional requirements given in Clause 6 and Clause 7 of EN 50155, where relevant, with the following additions. 8.1.1 Dimensions and wiring diagram For maintenance purposes and in order to achieve interchangeability with existing units, it is recommended that the electronic ballasts comply with dimensions and wiring diagrams given in one of the informative Annexes B to H, depending on the type of unit. SIST EN 50311:2003



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Electronic ballasts without housing shall comply with the requirements agreed between the purchaser and the manufacturer. 8.1.2 Terminals Type of terminals to be provided for the ballasts may be chosen by the purchaser. Screws, current-carrying parts and mechanical connections shall comply with the requirements of Clause 8 and Clause 15 of EN 60924 when appropriate. Electronic ballasts without housing shall comply with the requirements agreed between the purchaser and the manufacturer. 8.1.3 Provisions for repair Electronic ballast shall be designed such that all necessary access for diagnosis and repair is possible without damage or undue disturbance to the components or wiring. The enclosure shall provide the necessary protection against the environmental influences. It shall be possible to dismantle and repair or replace the components. Potting to provide additional protection is not allowed. 8.1.4 Clearance and creepage distances Clearance and creepage distances shall comply with EN 50124-1 considering - pollution degree PD1 for housed printed circuit board and PD2 for external parts, - overvoltage category OV2. The values shall not be lower than those required by Clause 10 and 14.1 of EN 60924. 8.1.5 Protection In order to maintain operability of the lighting equipment, the electronic ballast shall isolate itself from the circuit in case of an internal short-circuit and shall include - either a calibrated fuse fitted as a replaceable component, - or three printed tracks used as fuses which can be changed over during repair; then they shall not be used to protect against incorrect connection of polarity (see 8.2.2.1). The protection calibration shall be, in case of short-circuit, such as the peak current value is limited to 20 times the continuous current Ir at the rated voltage. NOTE The general protection value of the lighting circuit, chosen by the customer, should be at least equal to 25 times the current absorbed by one electronic ballast. 8.1.6 Inrush current The peak inrush current which may occur at the time of switch-on, measured in specified conditions of low impedance source, shall be less than 20 times the continuous current Ir of the electronic ballast supplied at the rated voltage. Before 1,5 ms, the current shall be at its permanent value. NOTE A more restrictive limit of inrush current may be specified by the customer. 8.2 Performance requirements 8.2.1 Electronic ballast parameters in accordance with lamps characteristics All requirements given hereafter are only applicable for appropriate type(s) of lamp(s) for which the electronic ballast is designed, and the characteristics which comply with the requirements of their relevant standard. SIST EN 50311:2003



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8.2.1.1 Current wave form supplied to lamps The current wave form supplied to the lamps shall be such that the electronic ballast complies with the electromagnetic compatibility requirements (see 8.2.3.4). In any case the ratio between the peak value and the r.m.s value shall not exceed 1,7. 8.2.1.2 Luminous flux - Luminance At the ambient air temperature of 22 °C ± 5 K, the lamp supplied by the electronic ballast at the rated voltage shall emit a luminous flux at least equal to those emitted by the same lamp supplied by any 50 Hz a.c. inductive ballast, the voltage of which being set to obtain the nominal power in the lamp. 8.2.1.3 Efficiency At the ambient air temperature of 22 °C ± 5 K, the power supplied to the lamp(s) by the electronic ballast at the rated voltage shall be at least equal to 0,75 time the power absorbed by the electronic ballast input. 8.2.1.4 Frequency The operating frequency shall be at least 18 kHz, irrespectively of the working conditions considered as possible in this standard. NOTE If needed to avoid EMC problems, the purchaser can either fix on special request the frequency range in which the electronic ballast operates or exclude a special frequency range. 8.2.1.5 Temperature The electronic ballast shall withstand, without requiring any additional heat sink, the whole temperature range for which it is designed irrespective of the supply voltage within the rated voltage range. The electronic ballast shall start the lamp for all temperatures equal to or higher than -5 °C irrespective of the applied supply voltage within the rated voltage range. In addition, for operating classes T2 and Tx, the electronic ballast shall start the lamp at temperatures equal to or higher than -25 °C irrespective of the applied supply voltage between the nominal voltage and the maximum voltage. No damage shall occur to electronic ballast or to the lamp(s) at temperatures outside the range required for lamp starting. Reduced lighting performance is accepted when the temperature around the lamp is less than -5 °C. 8.2.2 Exceptional conditions of use In addition to normal conditions of use, electronic ballasts are required to endure the following exceptional conditions without any damage to the electronic ballasts or to the lamps. 8.2.2.1 Polarity reversal protection Electronic ballasts shall be provided with protection against an incorrect polarity of the supply voltage at the input terminals. A continuous supply with incorrect polarity shall not damage the unit. During this period the electronic ballast shall withstand the overvoltage requirements without failure. If any fuses are allowed to be blown then the fuse shall be replaceable without removing the electronic ballast. Following the correct polarity connection and the replacement of the fuse, the electronic ballast shall operate properly. SIST EN 50311:2003



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8.2.2.2 Changing of lamps Electronic ballasts shall be able to withstand the effects of removing one or more lamps, at any voltage within the rated voltage range. They shall be able to light one or more new lamps, as soon as fitted, at the minimum temperature of 15 °C and at the rated voltage. At lower temperature and voltage values, the lighting of the new lamp may require a new switching cycle. 8.2.2.3 Abnormal function of the lamp Electronic ballasts shall be able to withstand the effects of any failure of a lamp or lamps such as - non lighting of one or more lamps, - lamps with one or both filaments cut, - abnormal variation of filament resistance, - lamps functioning as a diode. 8.2.2.4 Output voltage without lamps Independent of either being on load or off load, the insulation of cables connecting the lamps to the ballast shall not be exposed to excessive dielectric stress. At the rated voltage and 5 s after switching on, electronic ballasts peak voltages between any cable and car body shall be less than 800 V. 8.2.2.5 Short-circuit Electronic ballasts shall be able to withstand short-circuits of every filament. 8.2.2.6 Gradually decreasing of supply voltage The electronic ballasts shall not be damaged when the supply falls or remains below the lowest limit value of the rated voltage range, irrespective of the rate of the decreasing voltage. 8.2.2.7 Pre-heating current The electronic ballasts shall allow short-term cycles of lighting/extinguishing without shortening lamp working lives. This shall be achieved with a time delay for the starting process including the time which is required to heat the filaments before starting or an equivalent system. The limiting values of effective heating current shall comply with the requirements of Clause B.4 of EN 60927. 8.2.3 Electronic ballast design requirements 8.2.3.1 Leakage current The leakage current between each input connection and metallic housing, measured in specified conditions, shall not exceed 0,7 mA. 8.2.3.2 Ripple factor of input current The ripple factor of the current measured according to the conditions of 9.3.2.2 shall not be greater than 10 %. Ripple factor of the current is calculated as (%) = 100×−+()()maxminmaxminIIII. SIST EN 50311:2003



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8.2.3.3 Ripple factor of input voltage Due
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