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大家好(hao)!今天(tian)讓小編來(lai)大家介紹下關于金(jin)屬(shu)外殼(ke)為(wei)什么(me)接地(金(jin)屬(shu)外殼(ke)為(wei)什么(me)接地線)的問題(ti),以下是(shi)小編對此問題(ti)的歸納整理,讓我們一(yi)起來(lai)看看吧。
文章目錄列表:
為什么金屬外殼的電器都要接地線
金屬外殼的電器都要接地線的原因是防止靜電或漏電的發生,把外客的靜電經過地線引入大地。這樣避免了人在觸摸到金屬外客的時候不被電到;另外就是電器里面有一些電子元件或集成塊是避免靜電的,我以前在電子廠的時候,只要要接觸到集成塊的都得戴靜電手腕。如果你不戴,只要你一接觸集成塊,那么這個集成塊就報廢了!電器的金屬外殼為什么一定要接地
1,金屬導電。2電器漏電會使金屬殼帶電。3人會經常接觸金屬外殼。如果有漏電,就能致人觸電傷人。為什么電器設備的金屬外殼要接地 詳細?
在正常情況下電氣設備的金屬外殼與帶電部分是絕緣的,外殼上不家用電器的金屬外殼為什么一定要接地
1、 照明開關為何必須接在火線上?為什么電器設備的金屬外殼要接地?
定義:用來將電(dian)(dian)(dian)流(liu)引入(ru)(ru)(ru)大(da)(da)地(di)(di)(di)(di)(di)(di)(di)(di)的(de)(de)導(dao)線(xian)(xian)(xian)(xian)(xian)(xian);電(dian)(dian)(dian)氣設(she)備漏電(dian)(dian)(dian)時(shi)(shi)(shi)(shi)(shi),電(dian)(dian)(dian)流(liu)通(tong)(tong)過地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)進入(ru)(ru)(ru)大(da)(da)地(di)(di)(di)(di)(di)(di)(di)(di)。(1)供電(dian)(dian)(dian)地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian):從變壓(ya)器中(zhong)性點接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)后(hou)引出主干(gan)線(xian)(xian)(xian)(xian)(xian)(xian),根(gen)據(ju)標準(zhun),每間隔(ge)20-30米(mi)重(zhong)復接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di),在(zai)(zai)(zai)電(dian)(dian)(dian)路中(zhong)起安生保護作(zuo)用。在(zai)(zai)(zai)漏電(dian)(dian)(dian)的(de)(de)情況下(xia)(xia),用電(dian)(dian)(dian)者(zhe)和地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)形(xing)(xing)成了(le)(le)一(yi)(yi)(yi)個(ge)(ge)(ge)并聯電(dian)(dian)(dian)路。有了(le)(le)地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian),由于(yu)(yu)地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)的(de)(de)電(dian)(dian)(dian)阻比較(jiao)小,電(dian)(dian)(dian)流(liu)會迅(xun)速流(liu)入(ru)(ru)(ru)大(da)(da)地(di)(di)(di)(di)(di)(di)(di)(di),使(shi)(shi)用電(dian)(dian)(dian)者(zhe)避(bi)免觸(chu)電(dian)(dian)(dian)。在(zai)(zai)(zai)實際(ji)中(zhong)通(tong)(tong)常是一(yi)(yi)(yi)根(gen)黃(huang)綠相(xiang)間的(de)(de)導(dao)線(xian)(xian)(xian)(xian)(xian)(xian)。 澳大(da)(da)利亞一(yi)(yi)(yi)所(suo)民居旁一(yi)(yi)(yi)個(ge)(ge)(ge)典型的(de)(de)地(di)(di)(di)(di)(di)(di)(di)(di)電(dian)(dian)(dian)極 地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)在(zai)(zai)(zai)家(jia)(jia)庭用電(dian)(dian)(dian)中(zhong)是十(shi)分重(zhong)要(yao)的(de)(de),但有些(xie)地(di)(di)(di)(di)(di)(di)(di)(di)區的(de)(de)供電(dian)(dian)(dian)網(wang)中(zhong)沒有地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian),可以(yi)用如下(xia)(xia)方(fang)法(fa)補救。在(zai)(zai)(zai)屋外(wai)找一(yi)(yi)(yi)個(ge)(ge)(ge)地(di)(di)(di)(di)(di)(di)(di)(di)方(fang),拿一(yi)(yi)(yi)條50-70mm寬,1-2米(mi)長(chang)的(de)(de)角鐵打入(ru)(ru)(ru)地(di)(di)(di)(di)(di)(di)(di)(di)下(xia)(xia),然后(hou)把地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)連(lian)接(jie)(jie)(jie)到(dao)該角鐵上(shang)(shang),連(lian)接(jie)(jie)(jie)時(shi)(shi)(shi)(shi)(shi)最好用螺栓(shuan)固定,連(lian)接(jie)(jie)(jie)電(dian)(dian)(dian)線(xian)(xian)(xian)(xian)(xian)(xian)盡可能(neng)粗一(yi)(yi)(yi)點,6-10平(ping)方(fang)毫(hao)米(mi),要(yao)再減低接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)電(dian)(dian)(dian)阻可以(yi)在(zai)(zai)(zai)角鐵周圍再灌注一(yi)(yi)(yi)點鹽水(2)電(dian)(dian)(dian)路地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian):在(zai)(zai)(zai)電(dian)(dian)(dian)路設(she)計時(shi)(shi)(shi)(shi)(shi),主要(yao)是防(fang)止干(gan)擾與提高無線(xian)(xian)(xian)(xian)(xian)(xian)電(dian)(dian)(dian)波的(de)(de)輻射(she)效率。地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)被(bei)廣泛作(zuo)為(wei)(wei)電(dian)(dian)(dian)位的(de)(de)參(can)考點,為(wei)(wei)整個(ge)(ge)(ge)電(dian)(dian)(dian)路提供一(yi)(yi)(yi)個(ge)(ge)(ge)基準(zhun)電(dian)(dian)(dian)位。此時(shi)(shi)(shi)(shi)(shi),地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)未(wei)必(bi)與真正的(de)(de)大(da)(da)地(di)(di)(di)(di)(di)(di)(di)(di)相(xiang)連(lian),而(er)往往與輸(shu)入(ru)(ru)(ru)電(dian)(dian)(dian)源(yuan)線(xian)(xian)(xian)(xian)(xian)(xian)的(de)(de)一(yi)(yi)(yi)根(gen)相(xiang)連(lian)(通(tong)(tong)常是零線(xian)(xian)(xian)(xian)(xian)(xian)),其電(dian)(dian)(dian)位也與大(da)(da)地(di)(di)(di)(di)(di)(di)(di)(di)電(dian)(dian)(dian)位無關。整個(ge)(ge)(ge)電(dian)(dian)(dian)路在(zai)(zai)(zai)設(she)計時(shi)(shi)(shi)(shi)(shi),以(yi)地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)上(shang)(shang)電(dian)(dian)(dian)壓(ya)為(wei)(wei)0V,以(yi)統一(yi)(yi)(yi)整個(ge)(ge)(ge)電(dian)(dian)(dian)路電(dian)(dian)(dian)位。 地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian)插(cha)(cha)頭(tou) 。三個(ge)(ge)(ge)腳(jiao)(jiao)(jiao)(jiao)中(zhong)較(jiao)長(chang)的(de)(de)腳(jiao)(jiao)(jiao)(jiao)是接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)的(de)(de),可稱(cheng)做接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)腳(jiao)(jiao)(jiao)(jiao),另外(wai)兩個(ge)(ge)(ge)較(jiao)短的(de)(de)腳(jiao)(jiao)(jiao)(jiao)是把家(jia)(jia)用電(dian)(dian)(dian)器接(jie)(jie)(jie)入(ru)(ru)(ru)電(dian)(dian)(dian)路,可稱(cheng)它(ta)們為(wei)(wei)導(dao)電(dian)(dian)(dian)腳(jiao)(jiao)(jiao)(jiao)。在(zai)(zai)(zai)設(she)計電(dian)(dian)(dian)源(yuan)插(cha)(cha)頭(tou)時(shi)(shi)(shi)(shi)(shi),為(wei)(wei)考慮到(dao)使(shi)(shi)用者(zhe)的(de)(de)安全,有意識地(di)(di)(di)(di)(di)(di)(di)(di)將接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)腳(jiao)(jiao)(jiao)(jiao)設(she)計得比導(dao)電(dian)(dian)(dian)腳(jiao)(jiao)(jiao)(jiao)長(chang)幾個(ge)(ge)(ge)毫(hao)米(mi)。這(zhe)是因為(wei)(wei)在(zai)(zai)(zai)插(cha)(cha)入(ru)(ru)(ru)三腳(jiao)(jiao)(jiao)(jiao)插(cha)(cha)頭(tou)時(shi)(shi)(shi)(shi)(shi),接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)腳(jiao)(jiao)(jiao)(jiao)先(xian)接(jie)(jie)(jie)觸(chu)插(cha)(cha)座內(nei)(nei)的(de)(de)接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)線(xian)(xian)(xian)(xian)(xian)(xian),這(zhe)樣可先(xian)形(xing)(xing)成接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)保護,后(hou)接(jie)(jie)(jie)通(tong)(tong)電(dian)(dian)(dian)源(yuan);反(fan)之,在(zai)(zai)(zai)拔出三腳(jiao)(jiao)(jiao)(jiao)插(cha)(cha)頭(tou)時(shi)(shi)(shi)(shi)(shi),導(dao)電(dian)(dian)(dian)腳(jiao)(jiao)(jiao)(jiao)先(xian)與電(dian)(dian)(dian)源(yuan)插(cha)(cha)座內(nei)(nei)的(de)(de)導(dao)電(dian)(dian)(dian)端分開(kai),接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)腳(jiao)(jiao)(jiao)(jiao)后(hou)斷(duan)開(kai)。如果家(jia)(jia)用電(dian)(dian)(dian)器的(de)(de)金屬外(wai)殼由于(yu)(yu)絕緣體損壞等原因而(er)帶電(dian)(dian)(dian),這(zhe)時(shi)(shi)(shi)(shi)(shi)接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)腳(jiao)(jiao)(jiao)(jiao)就(jiu)會形(xing)(xing)成接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)短路電(dian)(dian)(dian)流(liu),使(shi)(shi)家(jia)(jia)用電(dian)(dian)(dian)器的(de)(de)金屬外(wai)殼接(jie)(jie)(jie)地(di)(di)(di)(di)(di)(di)(di)(di)而(er)對地(di)(di)(di)(di)(di)(di)(di)(di)放(fang)電(dian)(dian)(dian),從而(er)使(shi)(shi)人不被(bei)觸(chu)電(dian)(dian)(dian),起到(dao)安全保護的(de)(de)作(zuo)用。
以上就是小編對于(yu)金(jin)屬(shu)外殼(ke)為(wei)什么(me)接(jie)地(di)(金(jin)屬(shu)外殼(ke)為(wei)什么(me)接(jie)地(di)線(xian))問題和相(xiang)關問題的(de)解答了(le),金(jin)屬(shu)外殼(ke)為(wei)什么(me)接(jie)地(di)(金(jin)屬(shu)外殼(ke)為(wei)什么(me)接(jie)地(di)線(xian))的(de)問題希望對你有用!
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