風(fēng)扇標準

1、6.3.3用到熒光燈的風(fēng)扇的非金屬圍欄應(yīng)該符合136.3部分的要求。除非：符合在電器設(shè)備評估中使用的UL746C標準中關(guān)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(fēng)扇或吊扇燈組合應(yīng)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(yīng)該通過標準UL94中關(guān)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(dǎo)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(gòu)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(shè)備時，這個標準用于電器設(shè)備評估，UL746C。應(yīng)用于聚合圍欄內(nèi)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(jīng)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(yīng)位于電機機架開口的25.4mm（1英寸）之內(nèi)。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.