IEC 60571-2012高清版本標準

IEC60571

IEC60571:2012

Edition3.0 2012-09

INTERNATIONAL

STANDARD

NORMEINTERNATIONALE

Railwayapplications—Electronicequipmentusedonrollingstock

Applicationsferroviaires—Equipementsélectroniquesutiliséssurlematérielroulant

INTERNATIONAL

STANDARD

NORMEINTERNATIONALE

IEC60571

Edition3.0 2012-09

Railwayapplications—Electronicequipmentusedonrollingstock

Applicationsferroviaires—Equipementsélectroniquesutiliséssurlematérielroulant

INTERNATIONALELECTROTECHNICALCOMMISSION

COMMISSIONELECTROTECHNIQUEINTERNATIONALE

ICS45.060

PRICECODECODEPRIX

ISBN978-2-83220-411-5

Warning!Makesurethatyouobtainedthispublicationfromanauthorizeddistributor.

Attention!Veuillezvousassurerquevousavezobtenucettepublicationviaundistributeuragréé.

%RegisteredtrademarkoftheInternationalElectrotechnicalCommissionMarquedéposéedelaCommissionElectrotechniqueInternationale

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CONTENTS

FOREWORD. 6

Scope 8

Normativereferences. 8

Termsanddefinitions 10

Environmentalserviceconditionsofoperation 12

Normalserviceconditions 12

Altitude 12

Ambienttemperature 12

Shockandvibration 13

Relativehumidity 13

Specialserviceconditions. 13

General 13

Atmosphericpollutants. 13

Electricalserviceconditions 13

Powersupply 13

Supplyfromaccumulatorbattery 13

Supplybyastaticconverterorarotatingset 15

Supplychangeover 15

Supplywithoverheadlineorthirdrail 15

Supplyovervoltages. 15

Installation 15

Surges,electrostaticdischargeandtransientburstsusceptibilitytests. 16

Electromagneticcompatibility. 16

Reliability,maintainabilityandexpectedusefullife. 16

Equipmentreliability. 16

Predictedreliability. 16

Proofofreliability. 16

Usefullife 17

Maintainability. 17

Maintenancelevels 17

On-vehiclediagnosisandrepair 17

Off-vehiclediagnosisandrepair 17

Built-indiagnostics. 17

Automatictestequipment. 18

Alternativemethodsforfaultdiagnosis. 18

Purposebuilttestequipmentandspecialtools 18

Design 18

General 18

Qualitymanagement 18

Lifecycle 19

Detailedpractices—Hardware 19

Interfacing 19

Faultprotection. 19

Referencingpowersupplies 21

Interchangeability. 21

Reductionofsupplyvoltage 21

Polarityreversal 21

Inrushcurrents 21

Sparecapacity. 21

Detailedpractices—Software. 21

General 21

Softwaredesignmeasures 22

Equipmentfeatures. 23

General 23

Memorychecking 23

Self-test. 23

Watchdog 24

Errorindication 24

Recovery 24

Components 24

Procurement. 24

Application. 25

Construction 25

Equipmentconstruction 25

General 25

Mechanicalprotection 25

Polarisationorcoding 25

Dimensionalrequirements. 25

Socketsandconnectors 25

Componentmounting. 26

General 26

Layout 26

Fixing 26

Componentterminations 26

Pre-setcontrol 26

Selectontest(SOT)components. 26

Electricalconnections 27

General 27

Solderedconnections. 27

Crimpedconnections 27

Wirewrapconnections. 27

Otherconnections. 27

Internalflexiblewiring(electricalandoptical) 27

Flexibleprintedwiring 28

Printedboards—flexibleandrigid 28

Printedboardtypes 28

Procurement 28

Layout 28

Materials. 28

Protectivecoatingsforprintedboardassemblies. 29

Identification 29

Bareprintedboardidentification. 29

Identificationofsubracksandprintedboardassemblies 29

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Mountingpositionofsubracksandprintedboardassemblies 29

Fuseandbatteryidentification. 29

Mounting 30

Coolingandventilation. 30

Materialsandfinishes 30

Safety. 30

Introductoryremarks 30

General 31

Functionalsafety 31

Personnelsafety. 31

Documentation 31

General 31

Supplyandstorageofdocumentation. 31

Hardwareandsoftwaredocumentation. 31

General 31

Hardwaredocumentation 31

Softwaredocumentation. 32

Documentationrequirements 32

Documents 32

Circuitdiagrams. 33

Componentlists 33

Componentlayout 33

Blockdiagrams 33

Wiringdiagrams. 33

Interconnectiondiagrams 34

Equipmentdrawings. 34

Testing 34

Categoriesoftests. 34

General 34

Typetests. 34

Routinetests 35

Investigationtests 35

Listoftests. 35

General 35

Visualinspection. 35

Performancetest 36

Coldstarttest 36

Dryheattest 37

Dampheattest,cyclic 37

Supplyovervoltage. 38

Surges,electrostaticdischarge(ESD)andtransientburst

susceptibilitytests. 39

Radiofrequencytest 40

Insulationtest 40

Saltmisttest. 42

Vibration,shockandbumptest 42

Watertightnesstest 42

Equipmentstressscreening 43

Lowtemperaturestoragetest. 43

AnnexA(informative)Listofsubclausesinwhichagreementbetweentheparties(e.g.

userandmanufacturer)ismentioned 44

Bibliography 45

Figure1—SysteminterfacingwiththetypicalEMCareasA,BandC 20

Figure2—Supplyovervoltage 39

Table1—Ambienttemperature 12

Table2—Listoftests 35

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INTERNATIONALELECTROTECHNICALCOMMISSION

RAILWAYAPPLICATIONS—

ELECTRONICEQUIPMENTUSEDONROLLINGSTOCK

FOREWORD

TheInternationalElectrotechnicalCommission(IEC)isaworldwideorganizationforstandardizationcomprisingallnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectofIECistopromoteinternationalco-operationonallquestionsconcerningstandardizationintheelectricalandelectronicfields.Tothisendandinadditiontootheractivities,IECpublishesInternationalStandards,TechnicalSpecifications,TechnicalReports,PubliclyAvailableSpecifications(PAS)andGuides(hereafterreferredtoas“IECPublication(s)”).Theirpreparationisentrustedtotechnicalcommittees;anyIECNationalCommitteeinterestedinthesubjectdealtwithmayparticipateinthispreparatorywork.International,governmentalandnon-governmentalorganizationsliaisingwiththeIECalsoparticipateinthispreparation.IECcollaboratescloselywiththeInternationalOrganizationforStandardization(ISO)inaccordancewithconditionsdeterminedbyagreementbetweenthetwoorganizations.

TheformaldecisionsoragreementsofIEContechnicalmattersexpress,asnearlyaspossible,aninternationalconsensusofopinionontherelevantsubjectssinceeachtechnicalcommitteehasrepresentationfromallinterestedIECNationalCommittees.

IECPublicationshavetheformofrecommendationsforinternationaluseandareacceptedbyIECNationalCommitteesinthatsense.WhileallreasonableeffortsaremadetoensurethatthetechnicalcontentofIECPublicationsisaccurate,IECcannotbeheldresponsibleforthewayinwhichtheyareusedorforanymisinterpretationbyanyenduser.

Inordertopromoteinternationaluniformity,IECNationalCommitteesundertaketoapplyIECPublicationstransparentlytothemaximumextentpossibleintheirnationalandregionalpublications.AnydivergencebetweenanyIECPublicationandthecorrespondingnationalorregionalpublicationshallbeclearlyindicatedinthelatter.

IECitselfdoesnotprovideanyattestationofconformity.Independentcertificationbodiesprovideconformityassessmentservicesand,insomeareas,accesstoIECmarksofconformity.IECisnotresponsibleforanyservicescarriedoutbyindependentcertificationbodies.

Allusersshouldensurethattheyhavethelatesteditionofthispublication.

NoliabilityshallattachtoIECoritsdirectors,employees,servantsoragentsincludingindividualexpertsandmembersofitstechnicalcommitteesandIECNationalCommitteesforanypersonalinjury,propertydamageorotherdamageofanynaturewhatsoever,whetherdirectorindirect,orforcosts(includinglegalfees)andexpensesarisingoutofthepublication,useof,orrelianceupon,thisIECPublicationoranyotherIECPublications.

AttentionisdrawntotheNormativereferencescitedinthispublication.Useofthereferencedpublicationsisindispensableforthecorrectapplicationofthispublication.

AttentionisdrawntothepossibilitythatsomeoftheelementsofthisIECPublicationmaybethesubjectofpatentrights.IECshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.

InternationalStandardIEC60571hasbeenpreparedbyIECtechnicalcommittee9:Electricalequipmentandsystemsforrailways.

Thisthirdeditioncancelsandreplacesthesecondeditionissuedin1998anditsamendment1(2006).Itconstitutesatechnicalrevision.

Themaintechnicalchangeswithregardtothepreviouseditionareasfollows:

In4.1.2,Table1hasbeenmodifiedaccordingtoIEC62498-1.Additionalexplanationabouttheaimofthistableismentionedasnotes.

In,“32V”,”36V”,“64V”and“87V”havebeenaddedasthenominalvoltageofequipmentaccordingtoIEC60077-1.

In5.3and.1(Figure1),theword“interference”hasbeenreplacedby“disturbance”thatismoreappropriatebecause“disturbance”isthecauseof“interference”.

In12.2.7,“max”ofthetestwaveformdurationDhasbeenreplacedby“min”inthetableinFigure2.Specifying“min”canbeexpectedtoderivethedurationtimeDlongerthan1sbutquitenear1,0sinalmostallactualbusinesscase.Ontheotherhand,specifying“max”maycauseunnecessarilyshorterDthan1,0s.

Iny“0y7 n”hasbeenchangedto“k n”andsomeexamplesforNickel-cadmiumbatteryandLead-acidbatteryaregivenasNOTE.

Subclause12.2.9,Radiofrequencytest,hasbeendividedinto,Radiofrequencyimmunitytest,and,Radiofrequency-emissiontest.

ThetextofthisstandardisoriginallybasedonEN50155.ItwassubmittedtotheNationalCommitteesforvotingundertheFastTrackProcedure.

Thetextofthisstandardisbasedonthefollowingdocuments:

FDIS

Reportonvoting

9/1711/FDIS

9/1735/RVD

Fullinformationonthevotingfortheapprovalofthisstandardcanbefoundinthereportonvotingindicatedintheabovetable.

ThispublicationhasbeendraftedinaccordancewiththeISO/IECDirectives,Part2.

ThecommitteehasdecidedthatthecontentsofthispublicationwillremainunchangeduntilthestabilitydateindicatedontheIECwebsiteunder

"http://webstore.iec.ch"

inthedatarelatedtothespecificpublication.Atthisdate,thepublicationwillbe

reconfirmed,

withdrawn,

replacedbyarevisededition,or

amended.

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RAILWAYAPPLICATIONS—

ELECTRONICEQUIPMENTUSEDONROLLINGSTOCK

Scope

ThisInternationalStandardappliestoallelectronicequipmentforcontrol,regulation,protection,supply,etc.,installedonrailvehiclesandassociatedwith:

eithertheaccumulatorbatteryofthevehicle;

oralowvoltagepowersupplysourcewithorwithoutadirectconnectiontothecontactsystem(transformer,potentiometerdevice,auxiliarysupply);

withtheexceptionofelectronicpowercircuits,whichconformtoIEC61287-1.

Thisstandardcoverstheconditionsofoperation,design,construction,andtestingofelectronicequipment,aswellasbasichardwareandsoftwarerequirementsconsiderednecessaryforcompetent,reliableequipment.

Additionalrequirementsinotherstandardsorindividualspecificationsmaycomplementthisstandard,iftheyarejustified.

SpecificrequirementsrelatedtopracticesnecessarytoensuredefinedlevelsoffunctionalsafetyaredeterminedinaccordancewithandofIEC62278anditsinformativeAnnexA.

Softwaresafetyintegritylevelof1orhighershallonlybeconsideredwhenitisshownthataresidualsafetyriskremainsandthatithastobecarriedbythesoftwaredrivenprogrammableelectronicsystem.Insuchacase(i.e.softwaresafetyintegritylevel1orhigher),IEC62279isapplicable.

Forthepurposeofthisstandard,electronicequipmentisdefinedasequipmentmainlycomposedofsemiconductordevicesandrecognizedassociatedcomponents.Thesecomponentswillmainlybemountedonprintedboards.

NOTESensors(current,voltage,speed,etc.)andfiringunitprintedboardassembliesforpowerelectronicdevicesarecoveredbythisstandard.CompletefiringunitsarecoveredbyIEC61287-1.

Normativereferences

Thefollowingdocuments,inwholeorinpart,arenormativelyreferencedinthisdocumentandareindispensableforitsapplication.Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.

IEC60068-2-1,Environmentaltesting—Part2-1:Tests—TestA:Cold

IEC60068-2-2,Environmentaltesting—Part2-2:Tests—TestB:Dryheat

IEC60068-2-30,Environmentaltesting—Part2-30:Tests—TestDb:Dampheat,cyclic(12+12hourcycle)

IEC60297(allparts),Mechanicalstructuresforelectronicequipment—Dimensionsofmechanicalstructuresofthe482,6mm(19in)series

IEC60300-3-5,Dependabilitymanagement—Part3-5:Applicationguide—Reliabilitytestconditionsandstatisticaltestprinciples

IEC60352-1,Solderlessconnections—Part1:Wrappedconnections—Generalrequirements,testmethodsandpracticalguidance

IEC60352-2,Solderlessconnections—Part2:Crimpedconnections—Generalrequirements,testmethodsandpracticalguidance

IEC60529,Degreesofprotectionprovidedbyenclosures(IPCodes)

IEC60605(allparts),Equipmentreliabilitytesting

IEC60617,Graphicalsymbolsfordiagrams

IEC60850,Railwayapplications—Supplyvoltagesoftractionsystems

IEC61082(allparts),Preparationofdocumentsusedinelectrotechnology

IEC61124,Reliabilitytesting—Compliancetestsforconstantfailurerateandconstantfailureintensity

IEC61188(allparts),Printedboardsandprintedboardassemblies—Designanduse

IEC61188-5,Printedboardsandprintedboardassemblies—Designanduse—Part5:Attachment(land/joint)considerations

IEC61249-2-7,Materialsforprintedboardsandotherinterconnectingstructures—Part2-7:Reinforcedbasematerials,cladandunclad—EpoxidewovenE-glasslaminatedsheetofdefinedflammability(verticalburningtest),copper-clad

IEC61249-2-22,Materialsforprintedboardsandotherinterconnectingstructures—Part2-22:Reinforcedbasematerialscladandunclad—Modifiednon-halogenatedepoxidewovenE-glasslaminatedsheetsofdefinedflammability(verticalburningtest),copper-clad

IEC61373,Railwayapplications—Rollingstockequipment—Shockandvibrationtests

IEC62236-3-2:2008,Railwayapplications—Electromagneticcompatibility—Part3-2:Rollingstock—Apparatus

IEC62278:2002,Railwayapplications—SpecificationanddemonstrationofReliability,Availability,MaintainabilityandSafety(RAMS)

IEC62326(allparts),Printedboards

IEC62498-1:2010,RailwayApplications—Environmentalconditionsforequipment—Part1:Equipmentonboardrollingstock

ISO9001,Qualitymanagementsystems—Requirements

ISO90003,Softwareengineering—GuidelinesfortheapplicationofISO9001:2000tocomputersoftware

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Termsanddefinitions

Forthepurposesofthisdocument,thefollowingtermsanddefinitionsapply:

3.1

printedboard

basematerialcuttosizecontainingallholesandbearingatleastoneconductivepattern.Printedboardsaretypicallysubdividedaccordingto:

theirstructure(e.g.singleanddouble-sided,multilayers)

thenatureofthebasematerial(e.g.rigid,flexible)

3.2

printedboardassembly

printedboardwithelectricalandmechanicalcomponentsand/orotherprintedboardsattachedtoitwithallmanufacturingprocesses,soldering,coating,etc.,completed

3.3

plug-inunit

unitwhichplugsintoasubrackandissupportedbyguides.Theseunitscanbeofvarioustypes,rangingfromaprintedboardwithcomponentsmountedinaframeorboxtypeunit,designedwithaplug-inconnection

3.4

subrack

structuralunitforhousingprintedboardassembliesand/orplug-inunits

3.5

rack

free-standingorfixedstructureforsupportingelectricalorelectronicequipment(e.g.subracks)

3.6

cubicle

anyenclosureforhousingelectricaland/orelectronicequipment

3.7

linereplaceableunit

unitdesignedtobeexchangedasaresultofon-vehiclefaultdiagnosis,e.g.asubrack,orplug-inunit

3.8

performancecheck

shortformperformancetestwhichiscarriedoutduringandafterenvironmentaltests,sufficienttoprovethattheequipmentiswithinitsoperationallimits,andthatithassurvivedanenvironmentaltest

3.9

controlsystemvoltagesupply

voltagesupplyusedtopowerthevehiclecontrolequipment

Note1toentry:Thesupplymaybederivedfromavehiclebattery.Thebatterymaybechargedfrombatterychargers,auxiliaryinvertersandmotor-alternatorormotor-generatorsetswithassociatedelectronicregulations.

Wherethecontrolsystemvoltagesupplyisderivedfromabattery,thenominalandratedcontrolsystemvoltagesaredefinedin5.1.Wherenobatteryisfitted,thenominalcontrolsystemvoltageisthenormalcontrolledlevelofthatvoltage.

3.10

vehiclewiring

allwiringwhichcanbeconnectedtothecontrolsystemvoltagesupply,whereverlocated,andallotherwiringexternaltotheelectronicequipmentunderconsideration

3.11

supplyovervoltage

electricaldisturbancetothecontrolsystemvoltagesupplycausedbyequipmentcontrollingthatsupply.Asupplyovervoltagewilloccurasanincreaseinthelevelofthecontrolsystemvoltagesupply.

3.12

surge

non-periodicandrelativelyshortpositiveornegative(orboth)variable(voltageorcurrent)

betweentwosteadystates

Note1toentry:Itmaybeproducedbythenormaloperationofequipmentwithinthevehicle,causedgenerallybythedischargeofenergywheninductivecircuitsareswitched.

Itmaybepresenteitheronthecontrolsystemvoltagesupply,oronwiringconnecteddirectlytoswitchedinductivecircuits,orcoupledelectrostaticallyorelectromagneticallyfromsuchwiringintootherwiring.

Theeffectivevalueofthesourceimpedanceofatransientwilldependuponthemannerofitsgenerationandcoupling.

3.13

burst

repetitivepulsesoccurringduringafixedtimeinterval

Theymayoccurduringnormaloperationofthevehicle,typicallyresultingfromunstablearcconditions

3.14

failure

terminationoftheabilityofanitemtoperformarequiredfunction

Note1toentry:Atemporarymalfunctionwillnotbeconsideredafailureprovidedthat:

theequipmentrecoversnormaloperationautomaticallyfollowingmalfunction;

themalfunctionisnotapparenttothevehicleoperatingstaff;forexample,faultindicatorsdonotlightup.

Note2toentry:Attentionisdrawntothepossibilityofaconsequentialfailureofaseconditemofequipmentresultingfromatemporarymalfunctionofanotheritemofequipmentconnectedtoit.

3.15

damage

anychangeinvisualappearanceoralterationofmechanicalintegrity

3.16

usefullife

undergivenconditions,thetimeintervalbeginningatagiveninstantoftimeandendingwhenthefailureratebecomesunacceptable,orwhentheitemisconsiderednotrepairableasaresultofafaultorforotherrelevantfactors

Note1toentry:Forarepairableitemtheindividualusefullifemaybeendedbyafailurewhichisnotconsideredasrepairableforanyreason.

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Environmentalserviceconditionsofoperation

Normalserviceconditions

Altitude

ThealtitudeatwhichtheequipmentisnormallytofunctiondoesnotexceedthevaluescalledforinIEC62498-1:2010,4.2.Whenitexceedsthisfigure,compliancewiththerequirementsshallbedefinedbyagreementbetweenuserandmanufacturer.

Ambienttemperature

ElectronicequipmentshallbedesignedandmanufacturedtomeetthefullperformancespecificationrequirementfortheselectedtemperaturecategoriesasstatedinTable1.

Thedesignshalltakeintoaccounttemperatureriseswithincubiclestoensurethatthecomponentsdonotexceedtheirspecifiedtemperatureratings.

Inaddition,theequipmentshallmeetthespecialshort-termstartupthermalconditionsasstatedincolumn3.

Table1—Ambienttemperature

Class

Column1

Column2

Column3

Column4

Ambienttemperatureoutsidevehicle

°C

Internalcubicletemperature

°C

InternaIcubicleovertemperatureduring10min

’C

Airtemperaturesurroundingtheprintedboardassembly

°C

T1

—25+40

—25+55

+15

—25+70

T2

—40+35

—40+55

+15

—40+70

T3

—25+45

—25+70

+15

—25+85

T4

—10+40

—10+70

+15

—10+85

T5

+5+45

+5+70

+15

+5+85

T6

—20+45

—20+75

(NOTE2)

—20+(NOTE2)

TX

—40+50

—40+70

+15

—40+85

NOTE1ThedifferencesbetweenthisTable1(column2)andIEC62498-1:2010Table2(column3)aremainlyduetothefollowingreasons:

IEC62498-1referstoageneralapplication,wherecubiclesareprovidedwithoutanyparticularthermaldesign.

Inelectronicequipment,athermaldesignisusuallyneeded,toguaranteeaconvenientminimumandmaximumambienttemperaturefortheelectroniccomponents.Thevaluesgivenforthemaximumtemperaturesinsidethecubiclehasbeenrestrictedtoachoiceoftwotoallowmanufacturerstohaveonlytwoclassesofcards.

NOTE2Thisvaluemaybecomeashighasalevelthatsomeagreementbetweenuserandmanufacturermaybenecessaryconsideringtheeffectofhightemperaturetothelifeandreliabilityofpartsandtothecostofthethermaldesign.

Forperipheralunits(measuringtransducers,etc.),oriftheequipmentisinadecentralizedconfiguration,theniftheaboveambienttemperaturerangesareexceeded,theactualtemperaturesoccurringatthelocationoftheequipmentconcernedshallbeusedinthedesign.

Rapidexternalambienttemperaturevariationsresultingfromrunningthroughtunnelsshallbetakenintoaccount.Forthispurposetherateofchangeofexternaltemperatureshallbeassumedtobe3°C/s,withamaximumvariationof40°C.

Shockandvibration

Theequipmentshallbeabletowithstand,withoutdeteriorationormalfunction,vibrationsandshocksthatoccurinservice.

Inordertoprovidesomereasonabledegreeofconfidencethatitwillsurvivethespecifiedusefullifeunderserviceconditions,itshallbecapableofmeetingthevibration,shockandbumptestasdescribedin12.2.12.

Forthesepurposestheequipmentisspecifiedashavingtheelectronicunitsinstalledcomplete,andsupportedintheirdesignedfixings,withanti-vibrationmountswherefitted.

Forthetypicalvaluesofshocksandvibrationsinrealservice,referenceismadetoIEC61373.

Relativehumidity

RefertoTable2ofIEC62498-1:2010withregardingtherelativehumidityrangesforthetemperatureclassesT1toTXasbasisofdesignoftheequipment.

Theequipmentshallbedesignedforthefollowinghumiditystresses(limitvalues)overtherelevantrangeoftheexternalambienttemperatureasdefinedin4.1.2:

yearlyaverage75%relativehumidity,

30consecutivedaysintheyear:95%relativehumidity.

Inaddition,anymoisturecondensationshallnotleadtoanymalfunctionorfailure.

Forperipheralunits(measuringtransducers,etc.),oriftheequipmentisinadecentralizedconfiguration,theniftheabovehumiditystressesareexceeded,theactualhumidityoccurringatthelocationoftheequipmentconcernedshallbeusedinthedesign.

Specialserviceconditions

General

Specialarrangementsshallbeagreedbetweentheappropriatepartiesinvolvedwhenserviceconditionscanbeprovedtobedifferentfromthosementionedin4.1(e.g.electronicequipmentmountedonthebogieorintegratedwithinapowerconverter,etc.).Checksfortheeffectivenessofsucharrangementscan,ifrequired,formthesubjectofoptionaltypetestswhichcanbecarriedoutonthevehicleitselfinaccordancewithmethodstobeagreedbetweenuserandmanufacturer.

Atmosphericpollutants

Theequipmentmaybeexpectedtobeexposedthroughoutitslifetovariouspollutants(e.g.oilmist,saltspray,conductivedust,sulphurdioxide.).Thetypesofpollutantsandtheirconcentrationshouldbedefinedinthetenderdocuments.

Electricalserviceconditions

Powersupply

Supplyfromaccumulatorbattery

General

Thenominalvoltageofequipment(n)SOsuppliedshallbeselectedfromamongstthefollowingvalues:

24V,32V,36V,48V,64V,72V,87V,96V,110V

NOTEThesenominalvoltagevaluesaregivenonlyasstandardisingvaluesforthedesignofequipment.Theyarenottheoffloadbatteryvoltagessincethesearedeterminedbythetypesofbattery,thenumberofcellsandtheoperatingconditions.

FollowingIEC60077,differentvoltagevariationsmaybeusedwithagreementbetweenuserandmanufacturer.

Variationsofvoltagesupply

Electronicequipmentsuppliedbyaccumulatorbatterieswithoutavoltagestabilizingdeviceshalloperatesatisfactorilyforallthevaluesofthesupplyvoltagewithintherangedefinedbelow(measuredattheinputterminalsoftheequipment).

Themanufactureroftheelectronicequipmentshallspecifyitspowerconsumptioninordertoenablecalculationsforthebatterycabling.

Minimumvoltage: /rnNominalvoltage: L/,Ratedvoltage: 1,15L/,Maximumvoltage: 1,25L/,

Voltagefluctuations(e.g.duringstart-upofauxiliaryequipmentorvoltageoscillationsofbatterychargers)lyingbetween0,6nand1,4n?lndnotexceeding0,1sshallnotcausedeviationoffunction.

Voltagefluctuationslyingbetween1,25L/,and1,4L/,andnotexceeding1sshallnotcausedamage:equipmentmaynotbefullyfunctioningduringthesefluctuations.

Inthecaseofthermalengines,seealso.

NOTEkmaybe0,7forconventionaltypebatterylikeLead-acidbatteryand0,8e.g.forNickel-cadmiumbattery.

Interruptionsofvoltagesupply

Interruptionsofupto10msmayoccuroninputvoltageasdefinedbelow:

ClassS1:nointerruptions

ClassS2:10msinterruptions

Thisshallnotcauseanyequipmentfailure.

Thetimevaluesspecifiedarefornominalvoltageandthechoiceofclassesshallbedefinedbythesystemdesigner.

Variationsofvoltagesuppliesforrollingstockpoweredbythermalengines

Atstart-upofthermalenginesthevoltagesupplysystemshallbedesignedtoguaranteethesupplytotheessentialelectronicequipmentduringthewholestartingsequence.

D.C.ripplefactor

Allbatteriesonchargehaveapulsatingvoltage,thed.c.ripplefactorofwhich,unlessotherwisestated,shallnotbegreaterthan15%calculatedfromtheequation:

d.c.ripplefactor=

max— min

max” min

x100

whereL/?}XandL/?pjarethemaximumandminimumvalues,respectively,ofthepulsating

voltage.

Theminimumandmaximumvoltagesasdefinedinhowevershallnotbeexceeded.

Supplybyastaticconverterorarotatingset

Inthecaseofequipmentsuppliedwithpowerfromastabilizedsource,(e.g.astaticconverterorarotatingmotor-generatorsetprovidedwitharegulator),electronicequipmentshalloperatesatisfactorilyforvalues