电子课件-《电工英语(第三版)》-A01-3750-电工英语电子课件unit3

1、ELECTRICAL ENGLISH英语电工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 DiagramsG

2、oal Learn useful expressions for using wiring planLook and Study DialogueReadingFurther StudyWords and PhrasesLook and Study Dialogue Reading Further Study73Words and PhrasesA. Look up the phrases below in a dictionary. Match the symbols with the phrases.Look and Study Dialogue Reading Further Study

3、73Words and PhrasesA. Look up the phrases below in a dictionary. Match the symbols with the phrases.1 three wires; 2 ceiling lamp fixture 3 double-pole switch; 4 wiring concealed in ceiling or wall; 5 special-purpose connection, tv; 6 three-way switch; 7 duplex receptacle outlet;wiring concealed in

4、ceiling or wallduplex receptacle outletspecial-purpose connection, tvThree wiresdouble-pole switchthree-way switchceiling lamp fixtureLook 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 and Engli

5、sh answers according to the pictures.consumer unit；MCB；RCD；dwelling；wall outlet；architect；circuit diagram；lighting fixture；electrical symbol1._2._3._RCD漏电保护器MCB微型断路器consumer unit用户电箱Look and Study Dialogue Reading Further Study73Words and PhrasesB. Look up the words and phrases below in a dictionary

6、. Fill in the blanks with both Chinese and English answers according to the pictures.consumer unit；MCB；RCD；dwelling；wall outlet；architect；circuit diagram；lighting fixture；electrical symbol4._5._6._architect建筑师dwelling住处wall outlet墙壁插座Look and Study Dialogue Reading Further Study73Words and PhrasesB.

7、 Look up the words and phrases below in a dictionary. Fill in the blanks with both Chinese and English answers according to the pictures.consumer unit；MCB；RCD；dwelling；wall outlet；architect；circuit diagram；lighting fixture；electrical symbol7._8._9._circuit diagram电路图electrical symbol电气符号lighting fix

8、ture灯具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. Good afternoon!B: Hey, Jim! Good afternoon. Whats the problem?A: I have something I need to discuss with you. Do you understand the installation instructions of consumer unit tho

9、roughly?B: Almost.A: Why must the installation height be from 0.45m to 1.2m above the floor level?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: This provision is made for people to gain access to the facilities. The equipments include the con

10、sumer unit, as it contains devices such as MCB and RCD that may need operation or resetting by the user of the dwelling.A: Oh, I see. B: Is it necessary to have RCD protection?A: Yes. It protects the circuits supplying of socket outlets and the cables buried in the wall.B: OK, I see. Thanks a lot.Lo

11、ok and Study Dialogue Reading Further Study73Words and PhrasesA. Listen to the dialogue again and answer the questions.1. The installation height of consumer unit is made for people to gain access to .2. protects the circuits supplying of socket outlets and the cables buried in the wall.facilitiesRC

12、DLook and Study Dialogue Reading Further Study73Words and PhrasesB. Reorder the letters with your partner.LettersWordsset re ket c so pp su lys ac ces tec pro tcir cui tn con taier consumconsumerresetsocketsupplyaccessprotectcircuitcontainLook and Study Dialogue Reading Further Study73Words and Phra

13、ses布线平面图A necessary part of any set of drawing for construction of a building is the wiring plan. Architects, electrical designers, and contractors use floor-plan diagrams to locate components of the buildings electrical system, such as receptacle outlets, switches, lighting fixtures, and other wiri

14、ng devices. These devices and wiring arrangements are represented by means of symbols. The living-room plan shows two three-way switching arrangement. In oneLook and Study Dialogue Reading Further Study73Words and Phrases布线平面图arrangement, a ceiling outlet is switched from two door locations. Similar

15、ly, two receptacle outlets on the north wall are switched from two separate locations. The connection between switch and ceiling outlet is drawn with a medium weight solid line, indicating that the connection (conduit or cable) is to be concealed in the wall or ceiling above. The cross lines indicat

16、e the conductors in the conduit or cable. If cross lines are omitted, two wires are understood to be in the connection.Look and Study Dialogue Reading Further Study73Words and PhrasesA. Match the English with the Chinese. Draw lines.B. Choose the best answer1. Electrical designers use floor-plan dia

17、grams to components of the buildings electrical system.A. buy; B. repair; C. locate; D. install2. Electrical devices and wiring arrangements on floor-plan diagrams are represented by means of .A. line; B. picture; C. symbol; D. photo3. The cross lines on diagrams indicate .A. the conductors. B. the

18、conduits; C. The cables; D. the conductors in the conduit or cablea set of drawings 三路开关a floor-plan 一套图纸by means of words 建筑平面图a three-way switching 通过语言CCDLook and Study Dialogue Reading Further Study73Words and PhrasesC. Learn the important grammar and phrase in the text.1. such as 例如Architects e

19、lectrical designers, and contractors use floor-plan diagrams to locate components of the buildings electrical system, such as receptacle outlets, switches, lighting fixtures, and other wiring devices. 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, indust

20、ry, motorcycle英文： 2. by means of用，依靠These devices and wiring arrangements are represented by means of symbols. 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, 2D line英文： It can be applied in various industries, such as household appliances, electronics , motorcycle , automobile .Companies control

21、an electric system by means of 2D line diagrams.Look and Study Dialogue Reading Further Study73Words and PhrasesThree Way Switches.THREE WAY SWITCHES are so called because they have three connected（连接的）points inside them. If two 3-way switches are arranged, the lights can be turned on or off at eith

22、er end of the circuit. CIRCUIT DIAGRAM below shows the layout(布局)of one of the off positions. You can see that the circuit is open and so no current can flow. If the positions of both switches were reversed（反置）then it would still be an open circuit（开路）. There are also two ways for the circuit to be

23、closed: both switches in the up position or both switches in the down position.Look and Study Dialogue Reading Further Study73Words and Phrasesconsumer knsju:m n. 消费者，用户thoroughly rli adv. 彻底地provision prvin n. 规定, 条款, 条件access kses n. 进入facility fsiliti n. 设施，设备contain kntein vt. 包含operation ,prein

24、 n. 操作reset ,ri:set vt. 重置dwelling dweli n. 住处protection prutekn n. 保护protect prutekt vt. 保护circuit s:kit n. 电路，回路supply splai vt. 供给，提供socket skit n. 插孔，插座outlet autlet n. 出口socket outlet插座bury beri vt. 掩埋, 埋藏set set n.一套drawing dr:i n. 图画construction knstrkn n. 建造, 建设; 建筑业；建造物, 建筑物；plan pln n. 平面图

25、architect :kitekt n. 建筑师designer dizain n. 设计师floor-plan建筑平面图locate lukeit vt. 定位Look and Study Dialogue Reading Further Study73Words and Phrasescomponent kmpunnt n. 成分，组件receptacle riseptkl n. 插座fixture fikst n. 固定装置arrangement reindmnt n. 布置symbol simbl n.符号ceiling si:li n. 天花板locations lukens n.

26、位置，地点similarly similli adv. 同样地separate sepreit adj. 单独的，分开的weight weit n. 重量indicate indikeit vt. 表明，象征；指示conceal knsi:l vt. 隐藏cross kr:s adj. 交叉的omit umit vt. 省略consumer unit总配（用户）电箱floor level 楼面gain access to接近，可以使用MCB (Miniature Circuit Breaker) 小型断路器RCD (residual current device) 漏电保护器socket ou

27、tlet插座a set of一套floor plan建筑平面图lighting fixture 灯具by means of通过，借助于three-way switching 三路开关Lesson 8 Installing Entrance EquipmentGoal Learn useful expressions for installing entrance devicesLook and Study DialogueReadingFurther StudyWords and PhrasesLook and Study Dialogue Reading Further Study83Wor

28、ds and PhrasesA. Look up the phrases below in a dictionary. Fill the blanks with the right numbers. weather head; service entrance cable; power pole; main service panel; electric meter; meter box123456Look and Study Dialogue Reading Further Study83Words and PhrasesB. Look up the words and phrases be

29、low in a dictionary. Fill in the blanks with both Chinese and English answers according to the pictures.voltage tester; continuity tester; fish tape；transformer; ground rod; breaker box1._2._3._fish tape穿线钢带continuity tester断路探查器voltage tester电压检测器Look and Study Dialogue Reading Further Study83Words

30、 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.voltage tester; continuity tester; fish tape；transformer; ground rod; breaker box4._5._8._transformer变压器breaker box开关盒ground rod接地棒Look and Study Dia

31、logue 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: I think Ive got all the wiring materials and tools.B: Good, the materials are ready, but wed better check the tools again to make sure. We mustnt forget anything; otherwise the time limit for the project will be delayed. Yo

32、u tell me what weve got and Ill make sure weve got it.A: OK. Weve got two household toolboxes.B: Right, weve got them. Now whats the next tool?A: A 3001 voltage continuity tester.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。B: Weve certainly got the tes

33、ter. Its so special you cant miss it!A: The next tool is a wire stripper.B: Right, weve got it. And the last one?A: The last one is a fish tape.B: Ok, weve got that, too. Now we can get started.Look and Study Dialogue Reading Further Study83Words and PhrasesA. Listen to the dialogue again and circle

34、 Yes or No.1. They are checking the tools for wiring. Yes No2. They check the tools again because the time limit for the project has been delayed. Yes No3. They miss a continuity tester. Yes NoYesNoNoLook and Study Dialogue Reading Further Study83Words and PhrasesB. Reorder the letters with your par

35、tner.LettersWordslay de t li mi box tool er strip striperdelaylimittoolboxLook and Study Dialogue Reading Further Study83Words and Phrases进户装置安装The power companys overhead service lines feed the transformer to step down the voltage to feed your home. It then travels to the weather head which is atta

36、ched to a conduit connected to a meter box. Two 120 volt wires and a grounded neutral wire feed the meter through the weather head. The power company is responsible for power to the meter and the homeowner takes it from there.Look and Study Dialogue Reading Further Study83Words and Phrases进户装置安装The

37、electric meter is attached to the service entrance pipe and is usually attached to the side of your house. It may be attached to the power companys power pole also. It can be fed overhead or underground. The service must be connected to a ground rod outside the house.The electrical panel, breaker bo

38、x, fuse box or service panel is the next device in line. This panels job is to distribute power throughout your home and disconnect power from the incoming feed.The power comes in to a main breaker, individual breakers then is distributed to individual circuits (called branch circuits) throughout yo

39、ur home.Look and Study Dialogue Reading Further Study83Words and PhrasesA. Match the English with the Chinese. Draw lines.step down the voltage 分配功率branch circuit 降低电压grounded neutral wire 总开关distribute power 接地的中性线main breaker 支路Look and Study Dialogue Reading Further Study83Words and PhrasesB. Cho

40、ose the best answer1. to step down the voltage to feed your home.2. wires and a grounded neutral wire feed the meter.3. The electric meter attached to .4. The service must be connected to outside the house.5. distribute power throughout your home.The power companys overhead service lines feed the tr

41、ansformerTwo 120 voltthe service entrance pipea ground rod The panels job is toLook and Study Dialogue Reading Further Study83Words and PhrasesC. Learn the important grammar and phrase in the text.1. feed A（with B）/feed B（into A）供给、供应The power companys overhead service lines feed the transformer to

42、step down the voltage to feed your home. 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：the electricity line is fed with power through an underground cable./Power is fed into the electricity line through an underground cable.中文： 2. be attached to把固定，把附（在上）The electric meter is attached to the service entrance pipe

43、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。A power plug has to be attached to the machine by electric technicians.Look and Study Dialogue Reading Further Study83Words and PhrasesInstalling An Electrical Distribution Sub-PanelThe primary purpose of an electrical sub-panel is

44、 to provide you with additional electrical circuits. It does not change the total amount of power available to the home. The primary difference between a main electrical distribution panel and a sub-panel is in the main disconnector(独立的隔离开关). Modern electrical distribution panels have a main disconn

45、ector circuit breaker built into them.Look and Study Dialogue Reading Further Study83Words and Phrasesotherwise waiz adv. 否则limit limit n. 界限，限度delay dilei vi. 延期，耽搁toolbox tu:l,bks n. 工具箱continuity ,kntinju:iti n. 连续性tester test n. 试验装置，检测器stripper strip n. 剥离器tape teip n. 带子overhead uvhed adj. 高架的

46、feed fi:d vt. 供给transformer trnsf:m n.变压器attach tt vt. 附着connect knekt vt. 连接meter mi:t n. 仪表volt vlt n. 伏特grounded graundid adj. 接地的neutral nju:trl adj. 中立的，中性的homeowner hum,un n. 私房屋主entrance entrns n. 入口pipe paip n. 管pole pul n. 杆rod rd n. 棒breaker breik n.断路器distribute distribju:t vt. 分配througho

47、ut ru:aut prep.遍及disconnect ,disknekt vt. 断开incoming in,kmi adj. 引入的main mein adj. 主要的individual ,individjul adj. 单独的branch br:nt n. 分支Look and Study Dialogue Reading Further Study83Words and Phrasesmake sure确定time limit期限continuity tester断路探查器wire stripper剥线器fish tape穿线钢带get started行动起来step down逐步减

48、低weather head防水罩meter box 表箱service entrance总进户端ground rod接地棒power pole电线杆breaker box开关盒fuse box保险丝盒service panel配电箱branch circuit 支路Lesson 9 Installing CablesGoal Learn useful expression for installing cablesLook and Study DialogueReadingFurther StudyWords and PhrasesLook and Study Dialogue Reading

49、 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._kitchenettewater heatercable racewaycable raceway电缆通道kitchenette小厨房water heater热水器Look and Study Dialogue Reading Further

50、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: Thanks for coming so quickly, Mr. Smith. Id like to discuss my plans for the house wiring with you.B: Yes, my boss tells me you want to rewire the rooms and put in a kitchenette and a shower.A: Yes, thats right and I dont

51、want to see all those ugly cables. B: Well, youll need take down the unconcealed cables and install a new underground cable.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: Thats what I want. Whats your advice on the water heater?B

52、: In your case youll need a strong water heater. Youd better install a continuous flow water heater to save more space. A: Id take this advice.B: Youll need 380-volt three-phase current and a small consumer unit with circuit breakers and an RCD.A: OK. Ive got a sketch here of where I want the light

53、switches, sockets, shower and cooker.B: Thats very useful. Ill use it to see what materials well need and give you an estimate.Look and Study Dialogue Reading Further Study93Words and PhrasesA. Listen to the dialogue again and circle Yes or No.1. Jack invites Mr. Smith to visit his home. Yes No2. Ja

54、ck doesnt want to change the cables in his house. Yes No3. A continuous flow water heater can save more space. Yes No4. Jack draws a picture for where the electrical devices are. Yes NoNoNoYesYesLook and Study Dialogue Reading Further Study93Words and PhrasesB. Reorder the letters with your partner.

55、LettersWordsly u g t ske chful use g tro s nous continu un ed concealunconcealeduglysketchusefulstrongcontinuousLook and Study Dialogue Reading Further Study93Words and Phrases电缆安装Cable wiring methods are less expensive to install than raceway systems and require less training for the installer. The

56、y offer the advantage of low first cost, but changes after initial construction are fairly difficult and expensive to make.Individual conductors installed in tubular raceways are much less common in residential construction. A raceway is any enclosed channel designed for holding wires. Conduits and

57、wiring gutters are both common examples of raceways. Raceway wiring systems are more expensive to install and require more training. They have the advantage that wires can be pulled out and replaced with new ones after original construction. Look and Study Dialogue Reading Further Study93Words and P

58、hrases电缆安装Certain general rules and considerations apply to all wiring methods, including the components and equipment used in the installation.Look and Study Dialogue Reading Further Study93Words and PhrasesA. Match the English with the Chinese. Draw lines.pull out the plug应用于original construction初

59、期成本apply to the 相当困难first cost初始建造fairly difficult拔出插头Look and Study Dialogue Reading Further Study93Words and PhrasesB. Read the passage again and answer the questions.1. of cable wiring after initial construction are expensive to make.2. A raceway is any enclosed channel designed for .3. Raceway w

60、iring systems are more expensive to .Changesholding wires installLook and Study Dialogue Reading Further Study93Words and PhrasesC. Learn the important grammar and phrase in the text.1. pull out抽出They have the advantage that wires can be pulled out and replaced with new ones after original construct