电气英语证书考试(pec)-基础电气工程术语和定义

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1、电气英语证书考试(PEC)-BasicElectricalengineeringtermsanddefinitionsAccessFitting.Afittingthatpermitsaccesstoconductorsinconcealedorenclosedwiring,elsewherethanatanoutlet.ActiveElectricalNetwork.Anetworkthatcontainsoneormoresourcesofelectricalenergy.Admittance.The

2、reciprocalofimpedance.Air-BlastTransformer.Atransformercooledbyforcedcirculationofairthroughitscoreandcoils.AirCircuitBreaker.Acircuitbreakerinwhichtheinterruptionoccursinair.AirSwitch.Aswitchinwhichtheinterruptionofthecircuitoccursinair.Alive.Electricall

3、yconnectedtoasourceofemf,orelectricallychargedwithapotentialdifferentfromthatoftheearth.Also,practicalsynonymforcurrent-carryingorhot.AlternatingCurrent.Aperiodiccurrent,theaveragevalueofwhichoveraperiodiszero.Alternator.Synchronousgenerator;asynchronousa

4、lternatingcurrentmachinethatchangesmechanicalpowerintoelectricalpower.AmbientTemperature.Thetemperatureofasurroundingcoolingmedium,suchasgasorliquid,thatcomesintocontactwiththeheatedpartsofanapparatus.Ammeter.Aninstrumentformeasuringelectriccurrent.Ampere

5、.Achargeflowofonecoulombpersecond.Annunciator.Anelectromagneticallyoperatedsignalingapparatusthatindicateswhetheracurrentisflowingorhasflowedinoneormorecircuits.ApparentPower.Inasingle-phase,two-wirecircuit,theproductoftheeffectivecurrentinoneconductormul

6、tipliedbytheeffectivevoltagebetweenthetwopointsofentry.Appliance.Current-consumingequipment,fixedorportable,suchasheatingormotor-operatedequipment.Arc-FaultCircuitInterrupter(AFCI).Anelectricaldevicethatdetectstheuniqueelectroniccharacteristicsofelectrica

7、larcs.Ifanarcissensed,thedevicefurtherdeenergizesthecircuittowhichitisconnected.ArcingContacts.Contactsonwhichanarcisdrawnafterthemaincontactsofaswitchorcircuitbreakerhaveparted.ArcingTimeofFuse.Thetimeelapsingfromtheseveranceofthefuselinktothefinalinterr

8、uptionofthecircuitunderspecifiedconditions.Arc-OverofInsulator.Adischargeofpowercurrentintheformofanarc,followingasurfacedischargeoveraninsulator.ArmorClamp.Afittingforgrippingthearmorofacableatthepointwherethearmor