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1、“设备制造质量检验规程PowerTransformer1、SGSRefNo.:30Rev.:0Page:lof8INSPECTIONGIDELINESPOWERTRANSFoRMERDate:26/03/041NSPECTIONGUIDELINESPOWERTRANSFORMEROForApproval26032022J.C.BrottonB.TremainB.TremainJune2022Rev.DescriptionDatePreparedCheckedApprovedDateSGSRefNo.:30Rev.:0Page:2of8INSPECTI0NGUIDELINESPOWERTRANS
2、FORMERDate2、:26/03/04CONTENTSlPURPOSE2SCOPE3PROCEDURE4DOCUMENTS5lNspectionprocess6Shipping7powertransformerdataDossiersinspectionchecklistsgsRefNo.：30Rev.：OPage：3Of8INSPECTI0NGUIDELINESPOWERTRANSFORMERDate:26/03/041.0PURPOSEThisinstructioncoverstheinspection,testandverificationactivitiesrequ3、iredto
3、validatethesupply,manufactureandtestofpowertransformers.2.OSCOPEThisinstructioncoversallnecessarystagesintheproductionofpowertransformersfromtheexaminationofcertificationfromprocurementsourcestothefinalinspection,preservationandpackingtodespatchtosite.Althoug4、hthemethodologyincompilingthisinstructi
4、onistosystematicallyprogressthroughtheconstruction,experiencedinspectorsmayinterprettheintentoftheinstructiontoaccommodatelocalornovelpracticesortoutilisetheinstructionforaoneoff,oralternativedesign,thedesignhavingbeenappr5、OVedbytheclient.Anysuchvariationsshouldbenotedintheinspectorsreport.3.0PROCE
5、DURE3.IGENERALThisinstruction,togetherwithitsassociatedchecksheet,maybeusedonanyorderorcontract.ltisintendedtoactasaguidetotheinspectorinthecourseoftheinspectorprogramme.Anypartofthe6、documentmaybeinvokedandthesectionstobeusedandthelevelofinspectionrequiredwillbespecifiedonthechecksheet.AIItestsandi
6、nspectionswillbecarriedoutagainstapproveddrawings,purchaseorderspecifications,purchasersorcompanystandardszandwithinthepracticesandrulesofthe7、country,stateorprovinceandanygovernmentdecreesjaws,ordinanceorregulationthatmayapply.lfanyconflictorcontradictionsbeapparentinanyoftheabovezthenthemoreOnerou
7、srequirementwillapplyunlessthepurchaserorclientdirectsotherwiseinwriting.3.2REFERENCEDOCUMENTSApplicablec8、odesandSpecifications.DesigncodePurchaseorderspecificationPurchasersstandardsApproveddrawingsSGScompanystandards4.0DOCUMENTSTOBERECEIVED/AVAILABLEATINSPECTIONPurchaseorderorcontractinspectionan
8、dTestPIanDataSheetApproveddrawings,(arrangements,schematics,wiring,singleline)Su9bassemblydrawingsand/orpartslistsMaterial/partsCertificatesWeIdproceduresandprocedurequalificationrecords(ifapplicable)PowerTransformerTestProceduresCaIibrationrecordsfortestingandmeasuringequipmentSGSRefNo.:30Rev.:0Pag
9、e:4of8INSPECTI0NGUIDELINESPOWERTRANSFORMERDate:26/03/010、4Preparationandpainting/finishingprocedurepreservation,packingandshippingprocedureSpares/operatingmanualsSupplylist(packinglist)5.0INSPECTIONPR0CESS5.!MATERIALANDANCILLARYITEMS5.1.1REVIEWOFCERTlFICATIONOriginaIorauthenticatedcopiesofmillcertif
10、icateswillbeavailableatmanufact11、UrerspremisesJheseshouldbeexaminedforcompliancewithspecificationsand,whereappropriate,drawings.Thereviewwillinclude:MakersnameandlocationCertificatenumberMaterialSpecificationHeatorcastnumberChemicalcompositionMechanicalpropertiesHeattreatmentconditionSurfacefinishS
11、t12、ructuralobservations,notabledefects.5.1.2SUBASSEMBLY/INSTRUMENT/METERCERTlFicATIONPrincipaIancillaryitemswillbesupportedbytestcertification,or(asaminimum)certificatesofconformity.Thecontentofcertificationshouldbeappropriatetotherequiredscopeoftest.lnstrumentswillbesuppo13、 rtedbyinstrumentcalibr
12、ationrecordszwhereappropriate.5.2ADDITI0NALSPECIALREQUIREMENTSMayapplyonspecialrequirements,checktoensurethatcontractrequirementshavebeenmet.5.SREPORTINGReportingonmaterials/ancillaryitemsmustinclude:ConfirmationofsatisfactorydocumentreviewRecordof14、 theendorsementofcertificatesreviewed/witnessedRe
13、cordofallnonconformitiesRecordoftestswitnessedandtheresult5.4PRE-TANKINGINSPECTIONThisinspectionshouldonlybecarriedoutbySGSifsorequiredbytheclient.SGSRefNo.:30Rev.:0Page:5of8INSPECTI0NGIDELINESPOWERTRANSFORMERDate:15、 2603045.4.1VISALINSPECTIONVisuallycheckFabricationandcleanlinessofalltankareasando
14、fformersandframesCorrectnessofwindings,terminations,insulation,spacingandgeneralconstructionFreedomfromdamage(withparticularattentiontoinsulation),ContaminationandforeignobjectsManually16、 checksecurityofwedges5.5CONSTRUCTIONCHECK(TRANSFORMERTANKED)5.5.1VISUALANDDIMENSIONALCheckgeneralconditionCheck
15、nameplateCheckoutlinedimensions,interfacedimensionsandclearancesandOtherspecifieddimensions5.5.2GENERALARRANGEMENTCHECKCheckthatallinstruments,terminalboxes,co17、 、mpartments,controlSWitCheS,etc,areCorrectlyratedandarecorrectlyIocatedzWithspecifiedlabelling5.5.3WINDINGRESISTANCEMEASUREMENTMeasurethe
16、resistanceofallwindings,withwindingtemperatureatrecordedambient,usingamilli-ohmeter.5.5.4MEASUREMENTOFRATIOSCheckprimarytosecondarywindi18、 ngratios,foreachphase,foralltappings,usingaratiometer.5.5.5TEMPERATURERISETESTThetransformerissubjectedtofullloadcurrentatratedselected,withmonitoringofoiltemperature(lowerandupper);coolingairtemperaturemeasuredbyvoltage(variousloading methodsmay apply),with“normaltap19、
