風扇標準

1、6.3.3用到熒光燈的風扇的非金屬圍欄應該符合136.3部分的要求。除非：符合在電器設備評估中使用的UL746C標準中關于聚合材料的紫外線曝光量測試的聚合圍欄不需要符合136.3部分的要求。6.3.4根據(jù)62.5.8和62.5.9，有聚合機架的墻式或天花板嵌入式風扇或吊扇燈組合應該標明不能用于點燃額定裝置和只能用于一到兩個家庭。6.46.4非金屬零件（除了圍欄）非金屬零件（除了圍欄）6.4.1通常裝入那些裝入絕緣或非絕緣帶電部件的金屬機

2、架的或用于裝飾部件的聚合材料，應該通過標準UL94中關于裝置和器具中塑料材料零件可燃性測試的描述的燃燒測試來分成5VA5VBV0V1V2或HB類。除非No.1：當裝飾的零件所占的空間不大于2立方厘米（0.122立方英寸），直徑不大于3cm（1.18英寸），而且它的位置不會導致火花從一邊傳播到另一邊，或不會在可能的點火源和點火零件之間建立橋接時，它不需要由5VA5VBV0V1V2或HB類的材料構成。除非No.2：當一種材料符合聚合材料標準

3、中的12mm（0.47英寸）火焰測試，19mm（0.75英寸）火焰測試或127mm（5英寸）火焰測試時，則它就被決定為同等意義的。當火焰測試用于設備時，這個標準用于電器設備評估，UL746C。應用于聚合圍欄內部的火焰延緩劑外套是不可接受的，除非外套材料的界面經過單獨的研究發(fā)現(xiàn)是可接受的。6.4.2在電機外的聚合材料的葉輪不應位于電機機架開口的25.4mm（1英寸）之內。除非No.1：ExceptionNo.1:Fallmottypese

4、xceptskeletonopenframeanimpellerisnotprohibitedfrombeingwithin25.4mmofanopeninginthemothousingwhen:a)ThematerialisclassedasV2V1V05VinaccdancewiththeStardfTestsfFlammabilityofPlasticMaterialsfPartsinDevicesAppliancesUL94.

5、Thecoilwrapthatcomplieswiththe127mm(5inches)endproductflametestasdescribedintheStardfPolymericMaterials–UseinElectricEquipmentEvaluationsUL746Cdoesnotneedtopossessa5VAflameratingb)Thematerialcomplieswiththerequirementsfe

6、nclosureflammabilityusinga19mm(34inch)flameinaccdancewiththeStardfPolymericMaterials–UseinElectricalEquipmentEvaluationsUL746Cc)Nomotopeningwithin25.4mmofthebladehasadimensionmethan6.75mm(1764inch)anareamethan35.48mm2(0.

7、055squareinch)nomethansixsuchopeningsareprovidedd)de)Thematerialhasahotwireignitionratingofatleast7secondsasdescribedintheStardTestMethodfIgnitionofMaterialsbyHotWireSourcesASTMD3874f)Thefanemploysathermallyprotectedmott

8、odrivetheimpellercomplieswiththetestrequirementsinSection50ImpellerIgnitionTestg)ThefancomplieswiththerequirementsfunattendedareasasspecifiedinSections139140.ExceptionNo.2:Fbobbinwoundskeletonmotsemployedinaproductothert

9、hanceilingwallfansrangehoodsanimpellerisnotprohibitedfrombeingwithin25.4mmofthemotwindingswhen:a)TheimpellerisofmaterialclassedHBlessflammableinaccdancewiththeStardfTestsfFlammabilityofPlasticMaterialsfPartsinDevicesAppl

10、iancesUL94b)Thecoiliscompletelycoveredwithinsulationatleast0.8mm(132inch)thickc)Thespacebetweenthecoilcoveringbobbindoesnotexceed0.8mmtotal.ExceptionNo.3:Fbobbinwoundskeletonmotsemployedinaceilingfanwallfanrangehoodanimp

11、ellerisnotprohibitedfrombeingwithin25.4mmofthemotwindingswhenthemotcomplieswiththerequirementsof19.6.Effectivedatef6.4.2changedfromJune232005toDecember2320056.4.3Apolymericimpellerfafanintendedtobeinstalledinanareaexpose

12、dtotemperatureshigherthan40C(104F)suchasanatticfanafanintendedfuseincookingareasshallbemoldedfrompolymericmaterialhaving:a)Aheatdeflectiontemperatureunderaminimum455.07kPa(66psi)loadofatleast75C(167F)determinedasspecifie

13、dintheStardfPolymericMaterials–ShtTermPropertyEvaluationsUL746Ab)Arelativemechanicaltemperatureindexwithoutimpactofatleast60C(140F)determinedasspecifiedintheStardfPolymericMaterials–LongTermPropertyEvaluationsUL746B.6.4.