1、BRITISH STANDARD BS EN ISO 5826:2003 Resistance welding equipment Transformers General specifications applicable to all transformers The European Standard EN ISO 5826:2003 has the status of a British Standard ICS 25.160.30; 29.180 BS EN ISO 5826:2003 This British Standard was published under the aut
2、hority of the Standards Policy and Strategy Committee on 27 May 2003 BSI 27 May 2003 ISBN 0 580 41914 2 National foreword This British Standard is the official English language version of EN ISO 5826:2003. It is identical with ISO 5826:1999. It supersedes BS 7125:1989 which is withdrawn. The UK part
3、icipation in its preparation was entrusted to Technical Committee WEE/29, Resistance welding, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or Eu
4、ropean publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include
5、 all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquirie
6、s on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page,
7、 the ISO title page, pages ii and iii, a blank page, pages 1 to 22, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISC
8、HENORM ENISO5826 May2003 ICS25.160.30;29.180 Englishversion ResistanceweldingequipmentTransformersGeneral specificationsapplicabletoalltransformers(ISO5826:1999) MatrieldesoudageparrsistanceTransformateurs Spcificationsgnralesapplicablestousles transformateurs(ISO5826:1999) Widerstandsschweieinricht
9、ungenTransformatoren AllgemeineAnforderungen(ISO5826:1999) ThisEuropeanStandardwasapprovedbyCENon3April2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibli
10、ographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedt
11、otheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. E
12、UROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO5826:2003EForeword ThetextofISO5826:1999hasbeenpreparedb
13、yTechnicalCommitteeISO/TC44“Weldingand alliedprocesses“oftheInternationalOrganizationforStandardization(ISO)andhasbeentaken overasENISO5826:2003byTechnicalCommitteeCEN/TC121“Welding“,thesecretariatof whichisheldbyDS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof
14、anidenticaltextorbyendorsement,atthelatestbyNovember2003,andconflictingnational standardsshallbewithdrawnatthelatestbyNovember2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Repu
15、blic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO5826:1999hasbeenapprovedbyCENasENISO5826:2003withoutany modifications. ENISO5826:2003A INTERNATI
16、ONAL STANDARD ISO 5826 Secondedition 19991115 Resistanceweldingequipment TransformersGeneralspecifications applicabletoalltransformers MatrieldesoudageparrsistanceTransformateursSpcifications gnralesapplicablestouslestransformateurs ENISO5826:2003ii Contents Page 1Scop e1 2Normativereference s1 3Ter
17、msanddefinition s.1 4Symbol s2 5Physicalenvironmentandoperatingconditions 3 6Testcondition s3 7 Protection against electric shock5 8Th ermal requirements6 9 Ratednoloadoutputvoltage (U 20 )9 10 Ratedshortcircuitvoltage (U cc ).9 11Coolingliquidcircui t.9 12Dynamicbehaviou r10 13Ratingplat e10 14Inst
18、ructionmanua l.12 AnnexA (informative) Exampleofaratingplat e13 AnnexB (normative) Correctionsforhigheraltitudesandcoolingmediumtemperature s14 AnnexC (normative) Notesonphysicalconceptsandcommentsonsomedefinition s.15 AnnexD (normative) Typecod e21 Bibliography22 ENISO5826:2003iii Foreword ISO(theI
19、nternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepre
20、sentedonthatcommittee.Internationalorganizations,governmentalandnongovernmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commission(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgiv
21、enintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatleast75%ofthememberbodiescastingavote. InternationalStandardISO5826waspreparedbyTechnicalCommitteeISO/TC44, Weldi
22、ngandalliedprocesses , SubcommitteeSC6, Resistancewelding . Thissecondeditioncancelsandreplacesthefirstedition(ISO5826:1983),whichhasbeentechnicallyrevised. AnnexesB,CandDformanormativepartofthisInternationalStandard.AnnexAisforinformationonly. ENISO5826:2003blank ENISO5826:2003DRADNATSLANOITANRETNI
23、 OSI )E(9991:6285OSI 1 ResistanceweldingequipmentTransformersGeneral specificationsapplicabletoalltransformers 1Scope ThisInternationalStandardgivespecificationsapplicabletotransformersforresistanceweldingequipmentwithout connectedrectifier. 2Normative references Thefollowingnormativedocumentscontai
24、nprovisionswhich,throughreferenceinthistext,constituteprovisionsof thisInternationalStandard.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthese publicationsdonotapply.However,partiestoagreementsbasedonthisInternationalStandardareencouragedto investigatethepossibilityofapplyingthemost
25、recenteditionsofthenormativedocumentsindicatedbelow.For undatedreferences,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIEC maintainregistersofcurrentlyvalidInternationalStandards. ISO669, ResistanceweldingequipmentMechanicalandelectricalrequirements . IEC600512, Directactin
26、gindicatinganalogueelectricalmeasuringinstrumentsandtheiraccessoriesPart2: Specialrequirementsforammmetersandvoltmeters . IEC60085, Thermalevaluationandclassificationofelectricalinsulation . IEC602041, ElectricalequipmentofindustrialmachinesPart1:Generalrequirements . IEC60529, Degreesofprotectionpr
27、ovidedbyenclosures(IPcode). IEC605362, Classificationofelectricalandelectronicequipmentwithregardtoprotectionagainstelectricshock Part2:Guidelinestorequirementsforprotectionagainstelectricshock . IEC606641, InsulationcoordinationforequipmentwithinlowvoltagesystemsPart1:Principles,requirements andtes
28、ts . IEC60905, Loadingguidefordrytypepowertransformers . 3 Termsanddefinitions ForthepurposesofthisInternationalStandard,thetermsanddefinitionsgiveninISO669apply. ENISO5826:20032 4Symbols ThesymbolsusedinthisInternationalStandardarelistedinTable1. Table1Listofsymbols Symbol Description Reference I 1
29、p ratedpermanentinputcurrent 10,12 I 1X inputcurrentatagivendutyfactor annexC I 2 outputcurrent annexC I 2p permanentoutputcurrentat100%dutyfactor 13.2,annexC I 2X outputcurrentatagivendutyfactor annexC I 2/50 outputcurrentat50%dutyfactor 13.2 m mass 13.2 P power annexC P p permanentinputpower(at100
30、%dutyfactor) 10,11,13.2,annexC P X inputpoweratagivendutyfactor annexC P 50 inputpowerat50%dutyfactor 13.2 Q requiredtotalrateofcoolingliquidflow 11,13.2 R 1 initialresistanceofawinding 8.2.1,8.3.2 R 2 resistanceofawindingattheendoftheheatingtest 8.3.2 t time annexC t 1 onloadtime annexC T cycletime
31、 annexC U cc ratedshortcircuitvoltage 10 U 1cc inputshortcircuitvoltage 10 U 1N ratedsupplyvoltage 9,10,13.2 U 20 ratedoutputnoloadvoltage 9,13.2 X dutyfactor annexC X m dutyfactorofthemagneticcircuit annexC Z 2 totalimpedancereferedtotheoutput 10 Dp pressuredropofthecoolingliquidcircuit 11,13.2 Du
32、1,2 temperaturedifferences annexC u temperature annexC u a coolingmediumtemperature annexC u m equilibriumtemperature annexC u n temperaturewhenthetransformerstartstocool annexC u 0,1,2 temperaturesforcalculationofthethermaltimeconstantorthe windingtemperaturesduringtheheatingtest 8.2.1,8.3.2,annexC
33、 t thermaltimeconstant annexC t 2 thermaltimeconstantatgivenonloadtime annexC t 2p thermaltimeconstantatpermanentoutputcurrent annexC ENISO5826:20033 5 Physicalenvironmentandoperatingconditions 5.1General Transformersshallbesuitableforuseinthephysicalenvironmentandoperatingconditionsasspecifiedbelow
34、. Whenthephysicalenvironmentand/oroperatingconditionsareoutsidethosespecifiedbelow,anagreementmay beneededbetweenthesupplierandtheuser,(seee.g.annexBofIEC602041:1997). 5.2 Ambientairtemperature Transformersshallbecapableofoperatingcorrectlyinanambientairtemperaturebetween 15Cand 140C. Incaseofotherm
35、aximumtemperaturesofthecoolingmedium,seeannexB. 5.3Humidity Transformersshallbecapableofoperatingcorrectlywithinarelativehumidityrangeof30%to95%. Harmfuleffectsofoccasionalcondensationshallbeavoidedbyproperdesignoftheequipmentor,where necessary,byproperadditionalmeasures(e.g.airconditioners,drainhol
36、es). 5.4Altitude Transformersshallbecapableofoperatingcorrectlyataltitudesupto1000mabovemeansealevel. Incaseofotheraltitudes,seeannexB. 5.5 Transportationandstorage Transformersshallbedesignedtowithstand,orsuitableprecautionsshallbetakentoprotectagainst,transportation andstoragetemperaturesbetween 2
37、25Cand 155Candforshortperiodsnotexceeding24hupto 170C. Suitablemeansshallbeprovidedtopreventdamagefromhumidity,vibrationandshock. 5.6 Provisionsforhandling Transformersshallbeprovidedwithsuitablemeansforhandlingbycranesorsimilarequipment. 5.7 Temperatureofthecoolingliquid Thetemperatureofthecoolingl
38、iquidmaybeupto 130Cattheinletofthetransformer. NOTE Condensationcausedbyhighcoolingliquidfloworlowcoolingliquidtemperatureinrelationtotherelativehumidity shouldbeprevented. 6Test conditions 6.1General Thetestsshallbecarriedoutonnew,dryandcompletelyassembledtransformersatanambientairtemperature betwe
39、en110C and 1 40 C.Theventilationshallbeidenticalwiththatprevailingundernormalservice conditions.Whenplacingthemeasuringdevices,theonlyaccesspermittedshallbethroughopeningswithcover plates,inspectiondoorsoreasilyremovablepanelsprovidedbythemanufacturer.Themeasuringdevicesused shallnotinterferewiththe
40、normalventilationofthetransformerorcausetransferofheattoorfromit. Liquidcooledtransformersshallbetestedwithliquidconditionsasspecifiedbythemanufacturer. ENISO5826:20034 Theaccuracyofmeasuringinstrumentsshallbe: a) electricalmeasuringinstruments:Class0,5(0,5%fullscale,seeIEC600512); b)thermometer: 2K
41、. Unlessotherwisespecified,thetestsrequiredinthisInternationalStandardaretypetests. Thesequenceforsomeofthetypetestsisspecifiedin6.2. Theroutinetestsarespecifiedin6.3. Compliancewithotherstandardsreferredtoshallbecheckedaccordingtothesestandards. 6.2Type tests Alltypetestsshallbecarriedoutonthesamet
42、ransformerexceptotherwisespecified. Thosetypetestsgivenbelowshallbecarriedoutinthefollowingsequencewithoutdelaybetweenf),g),h)andi). a) Generalvisualinspection; b) Insulationresistance(see7.1)preliminarycheck; c) Thermalrating(seeclause8); d) Ratedshortcircuitvoltage(seeclause10); e) Protectionprovi
43、dedbytheenclosure(see7.3.1); f) Insulationresistance(see7.1); g) Dielectricstrength(see7.2); h) Dynamiccharacteristic(seeclause12); i) Generalvisualinspection. TheothertestsofthisInternationalStandardnotmentionedabovemaybecarriedoutinanyconvenientsequence. NOTE Thepreliminarycheckoninsulationresista
44、nceisrequiredtodeterminewhetherthetransformerissafetoconnect tothesupply. 6.3Routine tests Eachtransformershallbesubmittedsuccessivelytothefollowingroutinetests. a) Generalvisualinspection; b) Dielectricstrength(see7.2); c) Ratednoloadoutputvoltage(seeclause9); d) Coolingliquidcircuit(seeclause11);
