SAE AMS3227 Acrylonitrile Butadiene (Nbr) Rubber, Hot Oil and Coolant Resistant, Low Swell, 55-65
时间:2024-05-07 11:22:17 来源: 标准资料网 作者：标准资料网 阅读：9536
Product Code:SAE AMS3227
Title:Acrylonitrile Butadiene (Nbr) Rubber, Hot Oil and Coolant Resistant, Low Swell, 55-65
Issuing Committee:Ams Ce Elastomers Committee
Scope:This specification covers a nitrile (NBR) rubber in the form of sheet, strip, tubing, extrusions, and molded shapes. Primarily for hose, packings, bushings, grommets, and seals in contact with hot, petroleum-base lubricating oils and glycol-type coolants from -40 degrees to +100 degrees C (-40 degrees to +212 degrees F).
【英文标准名称】:High-frequencydielectricheatinginstallations-Testmethodsforthedeterminationofpoweroutput
【原文标准名称】:高频电介质加热设备.测定输出功率的试验方法
【标准号】:IEC61308-2005
【标准状态】:现行
【国别】:国际
【发布日期】:2005-12
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC27
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;介质装置;电介质加热器;电热器;电气工程;加热;加热装置;测量;测量技术;性能试验;功率输出;射频设备;试验
【英文主题词】:Definitions;Dielectricdevices;Dielectricheaters;Electricheatingappliances;Electricalengineering;Heating;Heatingappliances;Measurement;Measuringtechniques;Performancetesting;Poweroutput;Radiofrequencyapparatus;Testing
【摘要】:ThisInternationalStandardisapplicabletoindustrialhigh-frequencydielectricheatinginstallationsusedforthepurposeofthermalapplicationssuchasmelting,drying,welding,insectextermination,andgluingofpartiallyconductiveornon-conductivematerialssuchasplastics,wood,rubber,textiles,glass,ceramic,paper,bambooorfoodstuffs,inbothnormalandprotectiveatmospheres,using,forexample,inertgasesorvacuum.Thisstandardrelatestohigh-frequencydielectricheatinginstallationswithnominaldielectricheatingfrequencyintherangefrom1MHzto300MHzwithratedusefuloutputpowergreaterthan50W.Themainpurposeofthisstandardistoassistincompliancewiththerequirementssetoutin6.4ofIEC60519-9whentestingelectroheatingpowersources.Itisnotprimarilyintendedasameansofrepresentingapotentialhigh-frequencyheatingapplicationfortherequirementoftheuser.Duetothelargevarietyofdielectricheatingapplications,anyoutputpowervalueobtainedasaresultofthesetestsshouldnotalwaysbetakenasrepresentingthepowerthatcanbedissipatedinaparticulardielectricheatinginstallation,but,incertaininstances,theoutputpowervaluecouldbeusedasanindicationofperformance.Thepowerrequiredtoheatachargeisdependent,forexample,onthetypeofmaterialheated,thetemperatureofheatingandambientmoistureandontheconstructionoftheelectrodesystem.NOTEHeatingachargewithdielectricparametersdeeplychangingintimeand/ortemperaturethevalueoftheoutputpowerobtainedwiththeactualchargemaybedifferentfromthatobtainedinstandardtestconditions.ForequipmentworkingoutsidetheITU-designatedbands,thefrequencyofthegeneratorfollowstheresonantfrequencyoftheoutputcircuit,thustheoutputpowercanremainfairlystableduringtheworkcycle,evenwithhandtuningoftheoutputcircuit.Therefore,accordingtothisstandard,thetestwellrepresentstheactualoutputpowerinpracticalworkconditions.ForequipmentworkinginITU-designatedbands,thefrequencyofthegeneratorremainsstable,buttheresonantfrequencyoftheoutputcircuitvarieswiththechangeofdielectricparametersoftheload.Therefore,thevalueofthemeanoutputpowerintheworkcyclecanbemuchlowerthanthevalueobtainedinthetestconditions.Thisvaluedependsonthetimeresponseoftheeventualautomatictuningsystem.Thisstandardrelatestoequipmentnormallyoperatingundercontinuousratedconditions.
【中国标准分类号】:K61
【国际标准分类号】:25_180_10
【页数】:38P.;A4
【正文语种】:英语
【英文标准名称】:Gas-insulatedmetal-enclosedswitchgearforratedvoltagesof72.5kVandabove
【原文标准名称】:额定电压72.5Kv及以上的气体绝缘的铁壳式开关设备
【标准号】:BSEN60517-1997
【标准状态】:作废
【国别】:英国
【发布日期】:1992-06-15
【实施或试行日期】:1992-06-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Requirementsforindoororoutdoorswitchgearutilisinggasotherthanairatatmosphericpressureforinsulationfora.c.ratedvoltagesof7.2kVupwardsatfrequenciesuptoandincluding60Hz.
【中国标准分类号】:K31
【国际标准分类号】:29_130_10
【页数】:42P;A4
【正文语种】:英语