電氣外文文獻(xiàn)-翻譯

1、精選優(yōu)質(zhì)文檔-傾情為你奉上精選優(yōu)質(zhì)文檔-傾情為你奉上專心-專注-專業(yè)專心-專注-專業(yè)精選優(yōu)質(zhì)文檔-傾情為你奉上專心-專注-專業(yè)電氣外文文獻(xiàn) 翻譯 Circuit breaker 斷路器Compressed air circuit breaker is a mechanical switch equipment, can be i 空氣壓縮斷路器是一種機(jī)械開關(guān)設(shè)備，能夠在 n normal and special conditions breaking current (such as short circuit cur 正常和特殊情況下開斷電流。 rent). For example, air

2、 circuit breaker, oil circuit breaker, interference circ例如空氣斷路器、油斷路器， 干擾電路的導(dǎo)體 uit conductor for the application of the safety and reliability of the circuit 干擾電路的導(dǎo)體因該安全可靠的應(yīng)用于其中， breaker, current in arc from is usually divided into the following grades: a 電流斷路器按滅弧遠(yuǎn)離通常被分為如下等級(jí)：ir switch circuit breaker

3、, oil circuit breaker, less oil circuit breaker, compr 空氣開關(guān)斷路器、油斷路器、少油斷路器、壓縮空 essed air circuit breaker, a degaussing of isolating switch, six sulfur hexaf 氣斷路器、 具有消磁性質(zhì)的隔離開關(guān)、六氟 luoride circuit breaker and vacuum breaker. Their parameters of voltage, 化硫斷路器和真空斷路器。他們的參數(shù)有電壓等級(jí)、 current, insulation level

4、of breaking capacity, instantaneous voltage off ti 開斷容量的電流、絕緣等級(jí)開斷時(shí)間的瞬時(shí)電壓恢復(fù)和 me of recovery and a bombing. Breaker plate usually include: 1 the maxi 轟炸時(shí)間。斷路器的銘牌通常包括： 1.最大可承 mum tolerable current; 2 of the maximum current is interrupted; 3 largest 受電流； 2.最大中斷電流；3.最大線 line voltage; 4 interrupt the cycl

5、e number. In the 60hHZ system, interrupt 路電壓； 4.中斷周期數(shù)量。在60hHZ的系統(tǒng)中，中斷 may last from 3- to 8 cycle, in order to quickly break up to the load curre 可能持續(xù)3-至8個(gè)周期，為了快速中斷達(dá)負(fù)荷電流， nt, we have to ensure continued to cool it, high-speed, breaking can limit我們不得不確保它的持續(xù)冷卻，高速 開斷能限制 on transmission line damage, it i

6、s equally important to help system to mai 對(duì)傳輸線路的損害，這一點(diǎn)是同等重要的它幫助系統(tǒng) ntain stable operation at any time of the accident, the main circuit breaker 在任何事故發(fā)生時(shí)維持穩(wěn)定運(yùn)行， 斷路器主要 by operating mechanism, actuator and arc quenching chamber. 操作機(jī)構(gòu)、執(zhí)行機(jī)構(gòu)和滅弧室組成。 When a trigger current or voltage, spring operation mechan

7、ism of air isol 當(dāng)有觸發(fā)電流或者電壓時(shí)， 空氣隔離開關(guān)的彈簧操作機(jī)構(gòu) ation switch moves quickly to reduce the contact loss, special shape and u 迅速動(dòng)作以用來減少觸點(diǎn)的燒損，主觸點(diǎn)的特殊形 se the material of main contact completely fit for the arc of contact, air is 狀和使用材料完全適合電弧的接觸，空氣 olation switch further improvement is due to the arc quenching

8、 performan 隔離開關(guān)更進(jìn)一步的改進(jìn)是于滅弧性能 ce, insulating baffle plates arc shield, with arc the function of these specia 絕緣隔板組成的滅弧罩， 帶滅弧功能的觸頭等這些特殊性 l properties, it is used in low voltage and DC circuit breaker. 質(zhì)， 所以仍被應(yīng)用于低電壓等級(jí)和直流斷路器中。 Oil circuit breaker in around 1900, mainly to meet the new, breaking capa 多油斷

9、路器出現(xiàn)于1900前后，主要用來滿足新的開斷容量的要求， city requirements, AC switch is immersed in an oil cylinder, the oil in the 交流開關(guān)被浸入一個(gè)油缸之中，油在 arc quenching and zero set off function is very effective in the current, arc 熄滅電弧和在電流過零時(shí)建立開斷功能是十分有效， gate, nozzle, pear, a new operation mechanism and a variety of the new c 滅弧柵

10、、噴油嘴、鴨梨鋤頭、新的操作機(jī)構(gòu)和多種新的斷路功能 ircuit function in recent decades to introduce the use of oil circuit breaker 在近幾十年引進(jìn)使用多油斷路器能夠適應(yīng)362kV。 can adapt to 362kV. Types and Construction of Transformer變壓器的類型和結(jié)構(gòu) A transformer is a device that alternating current electric energy at one vo 變壓器是一個(gè)通過磁場(chǎng)作用將一個(gè)交流電壓值變成另一個(gè)電壓

11、值的 ltage level into alternating current electric energy at another voltage level 設(shè)備。 through the action of a magnetic consists of two or more coils wir它2條或更多的金屬絲纏繞在 e wrapped around a common ferromagnetic coils are (usually) 一個(gè)核心磁鐵上組成的。 這些繞線不直 not directly connected. The only connection between the

12、coils is the com 接接觸。繞線之間唯一的聯(lián)系是它們共有的存在于磁芯 mon magnectic flux presen within the core. 的磁通量。One of the transformer windings is connected to a source of ac electric po 一組變壓器繞組連接到一個(gè)交流電源上， wer,and the second(and perhaps third) transformer winding supplies elect同時(shí)第二組變壓器繞組作為電源提供給負(fù)載。 ric power to loads. the

13、 transformer winding connected to the power souce 連接到電源上的變壓器繞組叫做一次繞組，或者輸 is called the primary winding or input the winding connecte 入繞組。 連接負(fù)載的繞組叫做二次 d to the loads is called the secondary winding or input there is 繞組或者輸出繞組。如果電壓a third winding on the transformer,it is called the tertiary winding. Po

14、we 器上有第三繞組，它叫做三次繞組。電力變 r transformer are constructed on one of two types of type of con 壓器一兩種磁芯中的一種構(gòu)成。 一種構(gòu)造是 struction consists of a simple rectangular laminated piece of steel with the 一種簡(jiǎn)單的變壓器繞組纏繞在矩形兩邊的矩形薄鋼片組成。 transformer windings wrapped around two sides of the typ這種構(gòu) e of construction is know a

15、s coreform .The other type consists of three-le 造類型被認(rèn)為是核心形式。另一種類型是繞組纏繞在中心 gged laminated core with the windings wrapped around the center leg .Th 引腳的3引腳疊片鐵心構(gòu)成。is type of construction is know as shell either case,the core is con 這種構(gòu)造類型貝殼形式。其中任意一種類型，磁心都 structed of thin laminations electrically isolat

16、ed form each other in order i 是排列整齊的彼此之間電氣隔離的薄迭片構(gòu)成，n order to reduce eddy currents to a minimum. The primary and secondary windings in a physical transformer are wrapp 一個(gè)物理變壓器的一次繞組和二次繞組被纏繞成一個(gè)在內(nèi)部的另一 ed one on top of the other with the low-voltage winding a 個(gè)低壓繞組的上面。這樣安 n arrangement severs two purpos

17、es: simplifies the problem of insulati 排達(dá)到了兩個(gè)目的：1.它簡(jiǎn)化了從磁芯到高壓繞組的絕 ng the high- voltage winding from the results in much less leaka 緣問題。2. 與過去將兩個(gè)繞組在磁心上 ge flux than would be the two windings were separated by a distance on t 隔離一定距離比起來，它導(dǎo)致更少的漏通量。 he core. Power transformer are given a variety of differ

18、ent names, depending on th 電力變壓器被賦予了很多不同的名字， 取決于它們?cè)?eir use in power connected to the output of a gener 當(dāng)前系統(tǒng)中的作用。 一變壓器連接到一個(gè)發(fā)電機(jī)的輸出端， ator and used to step its voltage up to transformer levels is sometimes call并且用于步調(diào)它的電壓達(dá)到變壓器值有時(shí)被叫做單位變壓器。 ed unit transformer. The transformer ai the other end of the tra

19、nsformer li 變壓器一個(gè)排在另一個(gè)后面將電壓從傳送值 ne,which steps the voltage down from transmission levls to distribution le 步降到分布值， vels,is called a substation ,the transformer that takes th被叫做變電站。最后，變壓器將分布電壓和步幅 e distribution voltage and steps is down to the final voltage ai which the p 降到最后的實(shí)際使用的電能被叫做發(fā)送變壓器。 ower i

20、s actually used is called a distribution these devices所有這些設(shè)備本 are essentially the same-the only difference among them is their intended 質(zhì)上都是相同的它們之間唯一不同的是它們的特定用途。 use. In addition to the various power transformer, two special-purpose trans 除了各種電力變壓器兩個(gè)專用變壓器使用電 formers are used with electric machinery

21、and power first of t 動(dòng)機(jī)械和電力系統(tǒng)這些特殊 hese special transformers is a device specially designed to sample a high 變壓器中的第一個(gè)是一個(gè)專門簡(jiǎn)化高電壓產(chǎn)生較低的二次電壓而設(shè)voltage and produce a low secondary voltage directly proportional to 計(jì)的裝置 uch a transformer is called a potential power transformer al 例如一個(gè)變壓器叫做電壓互感器一個(gè)電力變壓器也產(chǎn) so p

22、roduces a secondary voltage directly proportional to its primary volta 生二次電壓直接與它的初級(jí)電壓成正比 ge;the difference between a potential transformer and a power transforme 之間差異的一個(gè)潛在功率變壓器和一個(gè)變壓器，是潛在的變壓器 r is that the potential transformer is designed to handle only a very small c 是設(shè)計(jì)來處理只有一個(gè)很電流。 second type of s

23、pecial transformer is a device designed to prov 在第二種類型的變壓器是一個(gè)特殊裝置設(shè)計(jì)為提供一個(gè)二次側(cè) ide a secondary smaller than but directly proportional to its 電流。多小但比比例對(duì)其直接初級(jí)電流。 primary device is called a current transformer. 這個(gè)裝置叫做電流互感器 Lingting protection 防雷保護(hù) The thunder and lightning protects to connect the ground;

24、Connect the gr 雷電保護(hù)接地是避雷技術(shù)最重要的環(huán)節(jié)，不管是直擊雷、 ound to avoid the thunder the most important link of the technique, ignore 感應(yīng)雷或其他形式的雷，避 is a shot thunder, respond the thunder of the thunder or other form, and a 雷 工作的最終都是把雷電流送入大地。 void the thunder work most all of send into the earth the thunder electric cu

25、rrent. Store the thunder energy to behave the type to build the , current t儲(chǔ)存雷能量為人類造福， 目前科技 echnology to still reach to not arrive, and therefore have no the reasonabl 還達(dá)不到，因此沒 有合理而良好的接地裝置是不可能談及防雷的。 e but good connect the ground equip to is impossible to speak about to defend the say the design, the

26、 construction is very high st所以說設(shè)計(jì)、施工好高標(biāo)準(zhǔn)的接地系統(tǒng)是 防雷工作 andard to connect the ground system is a heavy inside that defend thunder 的重中之重。 s work it heavy. High electric potential that For long time, people have an長(zhǎng)期以來， 人們有一個(gè)錯(cuò) illusion, and think that connect the ground electric resistance more small 覺，

27、認(rèn)為接地電阻越小避雷效果就越好，被保護(hù)的對(duì) 象就安全。 avoid the thunder result and then more like, quilt object that protect safety. Certainly the electric resistance is more the small is more quick, strike當(dāng)然電阻越小散流越快，雷擊的 by lightning to reserve time more short, the risk is more small, electric vo 高電位保留時(shí)間越短，危險(xiǎn)性越小，其跨步電 壓、 ltag

28、e of its stride, get in touch with the the electric voltage produce the m接觸電壓產(chǎn)生的機(jī)遇也就越小。 achine too the more the ?But, construction that the fulfillment proof of ne 但是，近十幾年來的實(shí)踐證明， ar and more than ten in the last yearses, with its say that connect the wort與其說接地電阻值重 要， h importance of ground electric

29、resistance, not equal to say that connect t不如說接地裝置的結(jié)構(gòu)更合 he ground to equip more reasonable, importance electricity equipments, d 理、重要。 emand variety that nows city, there is lots of in a building inside not the c現(xiàn)在的城市， 在一座建筑物內(nèi)有許多不同性質(zhì)的電氣設(shè) ongeniality connect the ground device, if avoid the thunder to connect the 備，需要多種接地裝置 ， 如避雷接地、電氣安全接地、交 ground, electricity the safety to connect the ground, AC power the work t 流電源工作接地、通信及計(jì)算機(jī)系統(tǒng)接地， o connect the ground, correspondence a