IECTR61857-2Edition1.02015-04TECHNICALREPORTElectricalinsulationsystems–Proceduresforthermalevaluation–Part2:SelectionoftheappropriatetestmethodforevaluationandclassificationofelectricalinsulationsystemsINTERNATIONALELECTROTECHNICALCOMMISSIONICS29.080.30ISBN978-2-8322-2594-3®RegisteredtrademarkoftheInternationalElectrotechnicalCommission®–2–IECTR61857-2:2015©IEC2015CONTENTSFOREWORD...........................................................................................................................31Scope..............................................................................................................................52Normativereferences......................................................................................................53Termsanddefinitions......................................................................................................64Generalinformation.........................................................................................................64.1Purposeoftheevaluation.......................................................................................64.2Testobjects............................................................................................................74.3Teststresses..........................................................................................................75DesignanddevelopmentofthescopeofworkfortheEISevaluation...............................76TestmethodsfortheevaluationandclassificationofEIS................................................7Table1–Evaluationforthermalstressesinair.......................................................................9Table2–StandardsforthemodificationofanestablishedEIS.............................................10Table3–Standardsforspecialenvironmentalapplications..................................................10Table4–Forevaluationpriortothestartoflong-termthermalageing..................................10PDIEC/TR61857-2:2015...
