电子课件《电工英语(第三版)》A013750电工英语电子课件unit3.ppt
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1、ELECTRICAL ENGLISH英语英语电工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 Diagram
2、sGoal 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 Stu
3、dy Dialogue Reading Further Study73Words 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 ou
4、tlet;wiring concealed in ceiling or wallduplex receptacle outletspecial-purpose connection,tvThree wiresdouble-pole switchthree-way switchceiling lamp fixture 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
5、 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 symbol1._2._3._RCD漏电保护器MCB微型断路器consumer unit用户电箱 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phras
6、esB.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 symbol4._5._6._architect建筑师dwelling住处wall outlet墙壁插座 Unit 3 Less
7、on 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 and English answers according to the pictures.consumer unit;MCB;RCD;dwelling;wall outlet;architect;circuit diagram;lighting fixture;electric
8、al symbol7._8._9._circuit diagram电路图electrical symbol电气符号lighting fixture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.Good afternoon!B:Hey,Jim!Good afternoon.Whats the problem?A:I have something I need to discuss
9、with you.Do you understand the installation instructions of consumer unit thoroughly?B:Almost.A:Why must the installation height be from 0.45m to 1.2m above the floor level?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:This pro
10、vision is made for people to gain access to the facilities.The equipments include the consumer 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
11、 of socket outlets and the cables buried in the wall.B:OK,I see.Thanks a lot.Unit 3 Lesson 4 Look 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.prot
12、ects the circuits supplying of socket outlets and the cables buried in the wall.facilitiesRCD Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesB.Reorder the letters with your partner.LettersWordsset re ket c so pp su ly s ac ces tec pro t cir cui t n con tai er consum
13、consumerresetsocketsupplyaccessprotectcircuitcontain Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phrases布线平面图布线平面图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 diagr
14、ams to locate components of the buildings electrical system,such as receptacle outlets,switches,lighting fixtures,and other wiring devices.These devices and wiring arrangements are represented by means of symbols.The living-room plan shows two three-way switching arrangement.In one Unit 3 Lesson 4 L
15、ook and Study Dialogue Reading Further Study73Words and Phrases布线平面图布线平面图arrangement,a ceiling outlet is switched from two door locations.Similarly,two receptacle outlets on the north wall are switched from two separate locations.The connection between switch and ceiling outlet is drawn with a mediu
16、m weight solid line,indicating that the connection(conduit or cable)is to be concealed in the wall or ceiling above.The cross lines indicate the conductors in the conduit or cable.If cross lines are omitted,two wires are understood to be in the connection.Unit 3 Lesson 4 Look and Study Dialogue Read
17、ing Further Study73Words and PhrasesA.Match the English with the Chinese.Draw lines.B.Choose the best answer1.Electrical designers use floor-plan diagrams to components of the buildings electrical system.A.buy;B.repair;C.locate;D.install2.Electrical devices and wiring arrangements on floor-plan diag
18、rams are represented by means of .A.line;B.picture;C.symbol;D.photo3.The cross lines on diagrams indicate .A.the conductors.B.the 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CCD Unit 3 Lesson 4
19、Look and Study Dialogue Reading Further Study73Words and PhrasesC.Learn the important grammar and phrase in the text.1.such as 例如Architects electrical designers,and contractors use floor-plan diagrams to locate components of the buildings electrical system,such as receptacle outlets,switches,lightin
20、g 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,industry,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:
21、It can be applied in various industries,such as household appliances,electronics,motorcycle,automobile.Companies control an electric system by means of 2D line diagrams.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and PhrasesThree Way Switches.THREE WAY SWITCHES are so called
22、 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 either 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 po
23、sitions 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 closed:both switches in the up position or both switches in the down position.Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phrasesconsumer kn
24、sju: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 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.
25、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architect:kitekt n.建筑师designer dizain n.设计师floor-plan建筑平面图locate lukeit vt.定位 Unit 3 Lesson 4 Look and Study Dialogue Reading Further Study73Words and Phrasescomponent kmpunnt n.成分,
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