電線中的黃綠線是什么線?
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來源:金環宇電線發布日期:2020-05-20 09:23
一般規定,三相電線顏色為黃、綠、紅,分別為A、B、C三相,代表的是火線,藍色為零線,黃綠相間的線代表為地線。
火線(xian)(紅。黃(huang)、綠(lv))零線(xian)(藍)地線(xian)(黃(huang)綠(lv)相間(jian))
接(jie)線(xian)(xian)(xian)時黃、綠(lv)、紅(hong)接(jie)火(huo)線(xian)(xian)(xian),藍色接(jie)零線(xian)(xian)(xian),黃綠(lv)相間的(de)(de)線(xian)(xian)(xian)接(jie)到PE保護線(xian)(xian)(xian)上(shang)(shang)或(huo)者接(jie)到設備外殼上(shang)(shang)(外殼已與地網連接(jie))。有(you)時四(si)線(xian)(xian)(xian)顏色區分不太明顯時,三(san)根截(jie)面(mian)一樣的(de)(de)為火(huo)線(xian)(xian)(xian),截(jie)面(mian)稍小的(de)(de)為零線(xian)(xian)(xian)。你說的(de)(de)變壓器(qi)也(ye)許是(shi)控制回(hui)路的(de)(de)電源,如是(shi)380V,接(jie)到任意兩根火(huo)線(xian)(xian)(xian)上(shang)(shang);如是(shi)220V,則接(jie)一根火(huo)線(xian)(xian)(xian),一根零線(xian)(xian)(xian)。
實(shi)際操(cao)作 安(an)全為上紅色是(shi)(shi)(shi)火線(xian)(xian)(xian),藍色是(shi)(shi)(shi)零(ling)線(xian)(xian)(xian),黃(huang)色或黃(huang)白相(xiang)(xiang)間的是(shi)(shi)(shi)地線(xian)(xian)(xian)。相(xiang)(xiang)線(xian)(xian)(xian)一般是(shi)(shi)(shi)黃(huang)、綠、紅,保護(hu)(hu)中性線(xian)(xian)(xian)(PEN線(xian)(xian)(xian))是(shi)(shi)(shi)黑色,保護(hu)(hu)線(xian)(xian)(xian)(PE線(xian)(xian)(xian))是(shi)(shi)(shi)黃(huang)綠雙色線(xian)(xian)(xian),保護(hu)(hu)線(xian)(xian)(xian)在任何情況下(xia)都(dou)嚴禁(jin)作相(xiang)(xiang)線(xian)(xian)(xian)使用。
根據《住宅(zhai)裝(zhuang)飾裝(zhuang)修工程施工規(gui)范(fan)》GB 50327-2001 16.1.4條規(gui)定:
“配線(xian)時(shi),相線(xian)與零線(xian)的顏色(se)應不(bu)同;同一住宅相線(xian)(L)顏色(se)應統一,零線(xian)(N)宜用(yong)藍色(se),保護(hu)線(xian)(PE)必(bi)須用(yong)黃綠雙色(se)線(xian)”
根據規(gui)(gui)范,可以(yi)得出:保護線(xian)(xian)(xian)(PE)即地線(xian)(xian)(xian)必須(強制性(xing)(xing)規(gui)(gui)定)用(yong)(yong)黃綠雙(shuang)色(se)線(xian)(xian)(xian),零線(xian)(xian)(xian)用(yong)(yong)藍色(se),(不是強制性(xing)(xing)規(gui)(gui)定,在條件許(xu)可時,勻應選擇藍色(se)線(xian)(xian)(xian)),相線(xian)(xian)(xian)不使用(yong)(yong)藍色(se)即為紅、黃、綠色(se)。(相線(xian)(xian)(xian)顏色(se)還(huan)未(wei)一(yi)致起來,不同公司可能規(gui)(gui)定不一(yi)樣(yang)。下面(mian)用(yong)(yong)顏色(se)方式可以(yi)參考。零線(xian)(xian)(xian)勻用(yong)(yong)藍色(se),如(ru)果用(yong)(yong)于插座,相線(xian)(xian)(xian)用(yong)(yong)紅色(se)。燈(deng)路進線(xian)(xian)(xian)用(yong)(yong)紅色(se),燈(deng)路控制線(xian)(xian)(xian)或雙(shuang)控線(xian)(xian)(xian)用(yong)(yong)黃色(se)和(he)綠色(se))
按規定(ding)顏色(se)(se)布線(xian)(xian)插座(zuo)(zuo)圖:紅色(se)(se)、藍(lan)色(se)(se)、雙色(se)(se)線(xian)(xian)穿入插座(zuo)(zuo)底盒。紅色(se)(se)作火(huo)線(xian)(xian),藍(lan)色(se)(se)作零(ling)線(xian)(xian),雙色(se)(se)線(xian)(xian)作地線(xian)(xian)。按規定(ding)顏色(se)(se)穿線(xian)(xian),施工也方(fang)便,紅色(se)(se)線(xian)(xian)火(huo)線(xian)(xian)與插座(zuo)(zuo)L極連(lian)(lian)接,藍(lan)色(se)(se)零(ling)線(xian)(xian)與N極連(lian)(lian)接,雙色(se)(se)線(xian)(xian)與接地標識連(lian)(lian)接。
按規定顏色燈(deng)路(lu)布線圖(tu):進火線用(yong)(yong)紅色,零線用(yong)(yong)藍色,控制(zhi)線用(yong)(yong)黃色(也可使(shi)用(yong)(yong)綠色)
什么是火線和零線:
火線(xian)是電路(lu)(lu)中輸送電的電源線(xian),零線(xian)是從變壓器(qi)中性點(dian)接地(di)后引出的主干線(xian),與火線(xian)(L)構成(cheng)回路(lu)(lu),對用電設備進行供電。
如何判斷火線和零線
1.用(yong)萬(wan)能(neng)表(biao)(biao)。首先先將(jiang)萬(wan)用(yong)表(biao)(biao)置于交(jiao)流(liu)檔(dang)500v,手捏一表(biao)(biao)筆,另一表(biao)(biao)筆分別觸接(jie)電源(yuan)線(xian)。電壓高的(de)(de)則是(shi)(shi)(shi)火線(xian),低的(de)(de)就是(shi)(shi)(shi)零(ling)線(xian),電壓為0的(de)(de)是(shi)(shi)(shi)地線(xian)。要(yao)(yao)是(shi)(shi)(shi)交(jiao)流(liu)檔(dang)打的(de)(de)是(shi)(shi)(shi)對的(de)(de),電壓要(yao)(yao)比實際值小,要(yao)(yao)是(shi)(shi)(shi)一不小心(xin)打錯到(dao)了(le)電阻檔(dang),是(shi)(shi)(shi)會(hui)傷到(dao)自己的(de)(de),所以(yi)要(yao)(yao)做好(hao)自我(wo)保護。
2.燈泡
找一(yi)個(ge)燈(deng)(deng)泡(pao)(帶燈(deng)(deng)口),斷開電源后,將燈(deng)(deng)泡(pao)的(de)一(yi)端(duan)連(lian)接到火線(xian)上。另一(yi)端(duan)連(lian)接到任意測線(xian)上。合閘,能夠正(zheng)常點亮燈(deng)(deng)泡(pao)的(de)是(shi)(shi)零(ling)線(xian);燈(deng)(deng)泡(pao)不亮或交暗的(de)是(shi)(shi)地線(xian)。
零線和地線接錯的后果
1.因為是交(jiao)流(liu)電(dian),所以火和零互換對電(dian)器沒什么影響。面對3孔(kong)插(cha)座,左(zuo)零,右火,主(zhu)要是維(wei)修時使用。
2.零和地(di)接(jie)反(fan)或混接(jie),這(zhe)種(zhong)情況(kuang)比較危險。因為地(di)線如果接(jie)到零線上,會導(dao)致設(she)備(bei)外殼帶電。(一(yi)般設(she)備(bei)正(zheng)常(chang)時外殼幾(ji)乎不帶電)