电工英语电子课件unit3.ppt

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1、ELECTRICAL ENGLISH英语英语电工电工Unit 1 Job and WorkplaceUnit 2 Electrical Tools and MaterialsUnit 3 House WiringUnit 4 Measuring InstrumentContents Unit 5 Motors and TransformersLesson7 Reading DiagramsLesson 8 Installing Entrance EquipmentLesson 9 Installing CablesUnit 3 House WiringLesson7 Reading Diagr

2、amsGoal Learn useful expressions for using wiring planLook and Study DialogueReadingFurther StudyWords and Phrases Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesA.Look up the phrases below in a dictionary.Match the symbols with the phrases.Unit 3 Lesson 4 Look and S

3、tudy Dialogue Reading Further Study73Words and PhrasesA.Look up the phrases below in a dictionary.Match the symbols with the phrases.1threewires;2ceilinglampfixture3double-poleswitch;4wiringconcealedinceilingorwall;5special-purposeconnection,tv;6three-wayswitch;7duplexreceptacleoutlet;wiringconceale

4、dinceilingorwallduplexreceptacleoutletspecial-purposeconnection,tvThreewiresdouble-poleswitchthree-wayswitchceilinglampfixture Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesB.Look up the words and phrases below in a dictionary.Fill in the blanks with both Chinese an

5、d English answers according to the pictures.consumerunit；MCB；RCD；dwelling；walloutlet；architect；circuitdiagram；lightingfixture；electricalsymbol1._2._3._RCD漏电保护器MCB微型断路器consumerunit用户电箱 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesB.Look up the words and phrases belo

6、w in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures.consumerunit；MCB；RCD；dwelling；walloutlet；architect；circuitdiagram；lightingfixture；electricalsymbol4._5._6._architect建筑师dwelling住处walloutlet墙壁插座 Unit 3 Lesson 4 Look and Study Dialogue Reading Further

7、 Study73Words and PhrasesB.Look up the words and phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures.consumerunit；MCB；RCD；dwelling；walloutlet；architect；circuitdiagram；lightingfixture；electricalsymbol7._8._9._circuitdiagram电路图electricalsymb

8、ol电气符号lightingfixture灯具 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesJim（A）初次实际安装总配电箱，向Carole（B）请教安装要求的问题。A:Hi,Carole.Goodafternoon!B:Hey,Jim!Goodafternoon.Whatstheproblem?A:IhavesomethingIneedtodiscusswithyou.Doyouunderstandtheinstallationinstructionsofconsumeruni

9、tthoroughly?B:Almost.A:Whymusttheinstallationheightbefrom0.45mto1.2mabovethefloorlevel?Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesJim（A）初次实际安装总配电箱，向Carole（B）请教安装要求的问题。B:Thisprovisionismadeforpeopletogainaccesstothefacilities.Theequipmentsincludetheconsumerunit,as

10、itcontainsdevicessuchasMCBandRCDthatmayneedoperationorresettingbytheuserofthedwelling.A:Oh,Isee.B:IsitnecessarytohaveRCDprotection?A:Yes.Itprotectsthecircuits supplying ofsocket outlets andthecablesburiedinthewall.B:OK,Isee.Thanksalot.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Wo

11、rds and PhrasesA.Listen to the dialogue again and answer the questions.1.Theinstallationheightofconsumerunitismadeforpeopletogainaccessto.2.protectsthecircuitssupplyingofsocketoutletsandthecablesburiedinthewall.facilitiesRCD Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Ph

12、rasesB.Reorder the letters with your partner.LettersWordssetreketcsoppsulysaccestecprotcircuitncontaierconsumconsumerresetsocketsupplyaccessprotectcircuitcontain Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phrases布布线线平面平面图图Anecessarypartofanysetofdrawingforconstructionof

13、abuildingisthewiringplan.Architects,electricaldesigners,andcontractorsusefloor-plandiagramstolocate components ofthebuildingselectricalsystem,suchasreceptacleoutlets,switches,lightingfixtures,andotherwiringdevices.Thesedevicesandwiringarrangementsarerepresentedbymeansofsymbols.Theliving-roomplanshow

14、stwothree-wayswitchingarrangement.Inone Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phrases布布线线平面平面图图arrangement,aceilingoutletisswitchedfromtwodoorlocations.Similarly,tworeceptacleoutletsonthenorthwallareswitchedfromtwoseparatelocations.Theconnectionbetweenswitchandceil

15、ingoutletisdrawnwithamediumweightsolidline,indicatingthattheconnection(conduitorcable)istobeconcealedinthewallorceilingabove.Thecrosslinesindicatetheconductorsintheconduitorcable.Ifcrosslinesareomitted,twowiresareunderstoodtobeintheconnection.Unit 3 Lesson 4 Look and Study Dialogue Reading Further S

16、tudy73Words and PhrasesA.Match the English with the Chinese.Draw lines.B.Choose the best answer1.Electricaldesignersusefloor-plandiagramstocomponentsofthebuildingselectricalsystem.A.buy;B.repair;C.locate;D.install2.Electricaldevicesandwiringarrangementsonfloor-plandiagramsarerepresentedbymeansof.A.l

17、ine;B.picture;C.symbol;D.photo3.Thecrosslinesondiagramsindicate.A.theconductors.B.theconduits;C.Thecables;D.theconductorsintheconduitorcableasetofdrawings三路开关afloor-plan一套图纸bymeansofwords建筑平面图athree-wayswitching通过语言CCD Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesC

18、.Learn the important grammar and phrase in the text.1.suchas例如Architectselectricaldesigners,andcontractorsusefloor-plandiagramstolocatecomponentsofthebuildingselectricalsystem,suchasreceptacleoutlets,switches,lightingfixtures,andotherwiringdevices.建筑师、电气工程设计师和承建商使用建筑平面图规划建筑电气系统中各设备位置，如插座插口、开关、灯具及其他布

19、线设备。练习：它可以广泛应用于家电设备、电子产品、汽车等行业。提示：apply,industry,motorcycle英文：2.bymeansof用，依靠Thesedevicesandwiringarrangementsarerepresentedbymeansofsymbols.这些设备和线缆的布置通过符号表示出来。练习：公司通过二维线路图控制电气系统。提示：control,2Dline英文：Itcanbeappliedinvariousindustries,suchashouseholdappliances,electronics,motorcycle,automobile.Compani

20、escontrolanelectricsystembymeansof2Dlinediagrams.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesThree Way Switches.THREEWAYSWITCHESaresocalledbecausetheyhavethreeconnected（连接的）pointsinsidethem.Iftwo3-wayswitchesarearranged,thelightscanbeturnedonoroffateitherendofthec

21、ircuit.CIRCUITDIAGRAMbelowshowsthelayout(布局)ofoneoftheoffpositions.Youcanseethatthecircuitisopenandsonocurrentcanflow.Ifthepositionsofbothswitcheswerereversed（反置）thenitwouldstillbeanopencircuit（开路）.Therearealsotwowaysforthecircuittobeclosed:bothswitchesintheuppositionorbothswitchesinthedownposition.

22、Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phrasesconsumerknsju:mn.消费者，用户thoroughlyrliadv.彻底地provisionprvinn.规定,条款,条件accessksesn.进入facilityfsilitin.设施，设备containknteinvt.包含operation,preinn.操作reset,ri:setvt.重置dwellingdwelin.住处protectionpruteknn.保护protectprutektvt.保护circui

23、ts:kitn.电路，回路supplysplaivt.供给，提供socketskitn.插孔，插座outletautletn.出口socketoutlet插座buryberivt.掩埋,埋藏setsetn.一套drawingdr:in.图画constructionknstrknn.建造,建设;建筑业；建造物,建筑物；planplnn.平面图architect:kitektn.建筑师designerdizainn.设计师floor-plan建筑平面图locatelukeitvt.定位 Unit 3 Lesson 4 Look and Study Dialogue Reading Further

24、Study73Words and Phrasescomponentkmpunntn.成分，组件receptacleriseptkln.插座fixturefikstn.固定装置arrangementreindmntn.布置symbolsimbln.符号ceilingsi:lin.天花板locationslukensn.位置，地点similarlysimilliadv.同样地separatesepreitadj.单独的，分开的weightweitn.重量indicateindikeitvt.表明，象征；指示concealknsi:lvt.隐藏crosskr:sadj.交叉的omitumitvt.省

25、略consumerunit总配（用户）电箱floorlevel楼面gainaccessto接近，可以使用MCB(MiniatureCircuitBreaker)小型断路器RCD(residualcurrentdevice)漏电保护器socketoutlet插座asetof一套floorplan建筑平面图lightingfixture灯具bymeansof通过，借助于three-wayswitching三路开关Lesson 8 Installing Entrance EquipmentGoal Learn useful expressions for installing entrance de

26、vicesLook and Study DialogueReadingFurther StudyWords and Phrases Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and PhrasesA.Look up the phrases below in a dictionary.Fill the blanks with the right numbers.weatherhead;serviceentrancecable;powerpole;mainservicepanel;electricmet

27、er;meterbox123456 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and PhrasesB.Look up the words and phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures.voltagetester;continuitytester;fishtape；transformer;groundrod;bre

28、akerbox1._2._3._fishtape穿线钢带continuitytester断路探查器voltagetester电压检测器 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and PhrasesB.Look up the words and phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures.voltagetester;c

29、ontinuitytester;fishtape；transformer;groundrod;breakerbox4._5._8._transformer变压器breakerbox开关盒groundrod接地棒 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and Phrases两个电工要进行室内布线工作，开始检查工具和材料准备情况。A:IthinkIvegotallthewiringmaterialsandtools.B:Good,thematerialsareready,butwedbetterch

30、eckthetoolsagaintomakesure.Wemustntforgetanything;otherwisethetimelimitfortheprojectwillbedelayed.YoutellmewhatwevegotandIllmakesurewevegotit.A:OK.Wevegottwohouseholdtoolboxes.B:Right,wevegotthem.Nowwhatsthenexttool?A:A3001voltagecontinuity tester.Unit 3 Lesson 4 Look and Study Dialogue Reading Furt

31、her Study83Words and Phrases两个电工要进行室内布线工作，开始检查工具和材料准备情况。B:Wevecertainlygotthetester.Itssospecialyoucantmissit!A:Thenexttoolisawirestripper.B:Right,wevegotit.Andthelastone?A:Thelastoneisafishtape.B:Ok,wevegotthat,too.Nowwecangetstarted.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Wo

32、rds and PhrasesA.Listen to the dialogue again and circle Yes or No.1.Theyarecheckingthetoolsforwiring.YesNo2.Theycheckthetoolsagainbecausethetimelimitfortheprojecthasbeendelayed.YesNo3.Theymissacontinuitytester.YesNoYesNoNo Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and Phr

33、asesB.Reorder the letters with your partner.LettersWordslaydetlimiboxtoolerstripstriperdelaylimittoolbox Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and Phrases进户进户装置安装装置安装Thepowercompanysoverheadservicelinesfeedthetransformertostepdownthevoltagetofeedyourhome.Itthentravelst

34、otheweatherheadwhichisattachedtoaconduitconnectedtoameterbox.Two120voltwiresanda grounded neutral wirefeedthemeterthroughtheweatherhead.Thepowercompanyisresponsibleforpowertothemeterandthehomeownertakesitfromthere.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and Phrases进户进户装置

35、安装装置安装Theelectricmeterisattachedtotheserviceentrance pipe andisusuallyattachedtothesideofyourhouse.Itmaybeattachedtothepowercompanyspowerpolealso.Itcanbefedoverheadorunderground.Theservicemustbeconnectedtoagroundrodoutsidethehouse.Theelectricalpanel,breakerbox,fuseboxorservicepanelisthenextdeviceinl

36、ine.Thispanelsjobistodistributepowerthroughoutyourhomeanddisconnectpowerfromtheincomingfeed.Thepowercomesintoamainbreaker,individualbreakersthenisdistributedtoindividualcircuits(calledbranchcircuits)throughoutyourhome.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and PhrasesA.

37、Match the English with the Chinese.Draw lines.stepdownthevoltage分配功率branchcircuit降低电压groundedneutralwire总开关distributepower接地的中性线mainbreaker支路 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and PhrasesB.Choose the best answer1.tostepdownthevoltagetofeedyourhome.2.wiresandaground

38、edneutralwirefeedthemeter.3.Theelectricmeterattachedto.4.Theservicemustbeconnectedtooutsidethehouse.5.distributepowerthroughoutyourhome.ThepowercompanysoverheadservicelinesfeedthetransformerTwo120volttheserviceentrancepipeagroundrodThepanelsjobisto Unit 3 Lesson 4 Look and Study Dialogue Reading Fur

39、ther Study83Words and PhrasesC.Learn the important grammar and phrase in the text.1.feedA（withB）/feedB（intoA）供给、供应Thepowercompanysoverheadservicelinesfeedthetransformertostepdownthevoltagetofeedyourhome.电力公司的架空线路输送电能至变压器，再降压至住宅用电电压。练习：theelectricitylineisfedwithpowerthroughanundergroundcable./Poweri

40、sfedintotheelectricitylinethroughanundergroundcable.中文：2.beattachedto把固定，把附（在上）Theelectricmeterisattachedtotheserviceentrancepipe电表安装在进户端的的配管上练习：电源插头需要由电气技术人员安装在机器上。提示：plug,technicians英文：电线经过地下供电。Apowerplughastobeattachedtothemachinebyelectrictechnicians.Unit 3 Lesson 4 Look and Study Dialogue Readi

41、ng Further Study83Words and PhrasesInstalling An Electrical Distribution Sub-PanelTheprimarypurposeofanelectricalsub-panelistoprovideyouwithadditionalelectricalcircuits.Itdoesnotchangethetotalamountofpoweravailabletothehome.Theprimarydifferencebetweenamainelectricaldistributionpanelandasub-panelisin

42、themaindisconnector(独立的隔离开关).Modernelectricaldistributionpanelshaveamaindisconnectorcircuitbreakerbuiltintothem.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and Phrasesotherwisewaizadv.否则limitlimitn.界限，限度delaydileivi.延期，耽搁toolboxtu:l,bksn.工具箱continuity,kntinju:itin.连续性testert

43、estn.试验装置，检测器stripperstripn.剥离器tapeteipn.带子overheaduvhedadj.高架的feedfi:dvt.供给transformertrnsf:mn.变压器attachttvt.附着connectknektvt.连接metermi:tn.仪表voltvltn.伏特groundedgraundidadj.接地的neutralnju:trladj.中立的，中性的homeownerhum,unn.私房屋主entranceentrnsn.入口pipepaipn.管polepuln.杆rodrdn.棒breakerbreikn.断路器distributedist

44、ribju:tvt.分配throughoutru:autprep.遍及disconnect,disknektvt.断开incomingin,kmiadj.引入的mainmeinadj.主要的individual,individjuladj.单独的branchbr:ntn.分支 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study83Words and Phrasesmakesure确定timelimit期限continuitytester断路探查器wirestripper剥线器fishtape穿线钢带getstarted行动

45、起来stepdown逐步减低weatherhead防水罩meterbox表箱serviceentrance总进户端groundrod接地棒powerpole电线杆breakerbox开关盒fusebox保险丝盒servicepanel配电箱branchcircuit支路Lesson 9 Installing CablesGoal Learn useful expression for installing cablesLook and Study DialogueReadingFurther StudyWords and Phrases Unit 3 Lesson 4 Look and Stu

46、dy Dialogue Reading Further Study93Words and PhrasesLook up the words and phrases below in a dictionary.Fill in the blanks with both Chinese and English answers according to the pictures.1._2._3._kitchenettewaterheatercableracewaycableraceway电缆通道kitchenette小厨房waterheater热水器 Unit 3 Lesson 4 Look and

47、Study Dialogue Reading Further Study93Words and PhrasesJack（A）准备安装小厨房和电气设备，并重新敷设线路。他约请电气公司的Smith（B）先生上门服务。A:Thanksforcomingsoquickly,Mr.Smith.Idliketodiscussmyplansforthehousewiringwithyou.B:Yes,mybosstellsmeyouwanttorewiretheroomsandputinakitchenetteandashower.A:Yes,thatsrightandIdontwanttoseeallth

48、oseuglycables.B:Well,youllneedtakedowntheunconcealedcablesandinstallanewundergroundcable.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study93Words and PhrasesJack（A）准备安装小厨房和电气设备，并重新敷设线路。他约请电气公司的Smith（B）先生上门服务。A:ThatswhatIwant.Whatsyouradviceonthewaterheater?B:Inyourcaseyoullneedastrongwat

49、erheater.Youdbetterinstallacontinuousflowwaterheatertosavemorespace.A:Idtakethisadvice.B:Youllneed380-voltthree-phasecurrentandasmallconsumerunitwithcircuitbreakersandanRCD.A:OK.IvegotasketchhereofwhereIwantthelightswitches,sockets,showerandcooker.B:Thatsveryuseful.Illuseittoseewhatmaterialswellneed

50、andgiveyouanestimate.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study93Words and PhrasesA.Listen to the dialogue again and circle Yes or No.1.JackinvitesMr.Smithtovisithishome.YesNo2.Jackdoesntwanttochangethecablesinhishouse.YesNo3.Acontinuousflowwaterheatercansavemorespace.YesNo4.Jackd