a-c英语词汇_发电机组专业术语

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1、ACAlternatingCurrent(AC)iselectriccurrentthatalternatesbetweenapositivemaximumvalueandanegativemaximumvalueatacharacteristicfrequency,usually50or60cyclespersecond(Hertz).交流，指电流在正负最大值之间以特定的频率变动，通常频率为50或60赫兹。ANSIAmericanNationalStandardsInstitute.美国国家标准协会AcousticMaterialAcousticmateria

2、lisanymaterialconsideredintermsofitsacousticproperties,especiallyitspropertiesofabsorbingordeadeningsound.声音材料，特指有吸音或隔音特性的材料。ActivePowerActivepoweristherealpower(kW)suppliedbythegeneratorsettotheelectricalload・Activepowercreatesaloadonthegeneratorsetsengineandislimitedbythehorsepower

3、oftheengine.Activepowerdoestheworkofheating,turningmotorshafts,etc.有功功率(kW),是指发电机组实际供应给负载的功率，它由发电机组的发动机提供，受到发动机马力大小的限制。发热和驱动马达转动靠有功功率完oAirCircuitBreakerAnaircircuitbreakerautomaticallyinterruptsthecurrentflowingthroughitwhenthecurrentexceedsthetripratingofthebreaker・Airisthemediumofe

4、lectricalinsulationbetweenelectricallylivepartsandgrounded(earthed)metalparts.空气线路断路器，其功能是当电流大小超过断路器的过流跳脱设定值后自动断开。空气是带电零件和接地金属零件之间的绝缘介质。AlternatorAlternatorisanothertermforACgenerator・交流发电机AmortisseurWindingsTheamortisseurwindingsofasynchronousACgeneratoraretheconductorsembeddedinthe

5、polefacesoftherotor・Theyareconnectedtogetheratbothendsofthepolesbyendringsorendplates・Theirfunctionistodampenwaveformdistortionduringloadchanges・阻尼线圈。同步交流发电机的阻尼线圈是指嵌绕在转子磁极间的导线，他们分别在两极用端环或端板相连接，主要功能是减弱因负载变化而引起的波形畸变。AmpacityAmpacityisthesafecurrent-carryingcapacityofanelectricalconduct

6、orinamperesasdefinedbycode.载流容量，是以安培数来定义导线安全载流能力。AmpereTheampereisaunitofelectriccurrentflow・Oneampereofcurrentwillflowwhenapotentialofonevoltisappliedacrossaresistanceofoneohm・安培，是电流单位。1伏电压作用于1欧姆的电阻上就会产生1安培的电流。AnnunciatorAnannunciatorisanaccessorydeviceusedtogiveremoteindicationofth

7、estatusofanoperatingcomponentinasystem.Annunciatorsaretypicallyusedinapplicationswheretheequipmentmonitoredisnotlocatedinaportionofthefacilitythatisnormallyattended・TheNFPAhasspecificrequirementsforremoteannunciatorsusedinsomeapplications,suchashospitals.指示器。作为一个附属装置常用于远程显示系统的各个组成部分的

8、运行状态。指示器通常使用