漏電保護開關如何接線
1、根據不同的電氣設備的供電方式,選用不同的漏電保護器
單相220V電(dian)(dian)源(yuan)供電(dian)(dian)的電(dian)(dian)氣(qi)設備,應選用二極(ji)二線或單極(ji)二線式漏電(dian)(dian)保護器。
三相三線式380V電(dian)(dian)源供電(dian)(dian)的電(dian)(dian)氣設備(bei),應選用三極式漏電(dian)(dian)保護器。
三相(xiang)(xiang)四(si)線(xian)式380V電(dian)源供電(dian)的電(dian)氣設(she)備(bei)或單(dan)相(xiang)(xiang)設(she)備(bei)與(yu)三相(xiang)(xiang)設(she)備(bei)共用的電(dian)路,應選用三極四(si)線(xian)或四(si)極四(si)線(xian)式漏電(dian)保護器。
2、根據電氣線路的正常泄漏電流,選擇漏電保護器的額定漏電動作電流
選擇漏(lou)電(dian)保(bao)護器的額(e)定漏(lou)電(dian)動(dong)作(zuo)電(dian)流值時,應充分考慮到被(bei)保(bao)護線(xian)路和設備可能(neng)發生的正常漏(lou)電(dian)流值。
選用的(de)漏電(dian)保(bao)護器的(de)額定漏電(dian)不動作電(dian)流,應小于電(dian)氣線(xian)路和設備的(de)正(zheng)常(chang)漏電(dian)電(dian)流的(de)最大值的(de)2倍(bei)。
漏電(dian)(dian)保(bao)護器的額定電(dian)(dian)壓、額定電(dian)(dian)流(liu)、短路(lu)(lu)分斷(duan)能力(li)、額定漏電(dian)(dian)電(dian)(dian)流(liu)、分斷(duan)時(shi)間應滿足被保(bao)護供(gong)電(dian)(dian)線路(lu)(lu)和(he)電(dian)(dian)氣設備的要求。
漏電保護開關正確接線方法
1、用于支(zhi)線(xian)(xian)(xian)保護(hu)時(shi),各(ge)支(zhi)線(xian)(xian)(xian)應有各(ge)自的專用零(ling)線(xian)(xian)(xian),且兩(liang)相鄰支(zhi)線(xian)(xian)(xian)路(lu)的零(ling)線(xian)(xian)(xian)不得相連(lian)。如(ru)果將兩(liang)分支(zhi)線(xian)(xian)(xian)路(lu)相連(lian),零(ling)線(xian)(xian)(xian)中的電流(liu)互(hu)流(liu),破壞(huai)零(ling)序電流(liu)互(hu)感器(qi)內(nei)的工作電流(liu)平(ping)衡,使(shi)漏電保護(hu)器(qi)發生(sheng)誤動(dong)(dong)作。如(ru)果想就(jiu)近利用動(dong)(dong)力分支(zhi)線(xian)(xian)(xian)的零(ling)線(xian)(xian)(xian)作為照明分支(zhi)線(xian)(xian)(xian)的零(ling)線(xian)(xian)(xian),則會造成動(dong)(dong)力分支(zhi)線(xian)(xian)(xian)的漏電保護(hu)器(qi)動(dong)(dong)作。
2、一(yi)(yi)個用電設備只能接在(zai)一(yi)(yi)條(tiao)保(bao)護(hu)(hu)支路(lu)內(nei)(nei),不得跨接在(zai)兩(liang)條(tiao)分支回路(lu)內(nei)(nei),不得接在(zai)零序(xu)互感器的前(qian)面,也不得采取一(yi)(yi)線一(yi)(yi)地制(zhi)供電,否則,會(hui)導(dao)致漏電保(bao)護(hu)(hu)器誤動(dong)作。
3、裝有漏(lou)(lou)電(dian)保護器和未(wei)裝漏(lou)(lou)電(dian)保護器的(de)用(yong)(yong)電(dian)設備,不得共用(yong)(yong)一(yi)個(ge)接地(di)裝置。例(li)如,當電(dian)機M1的(de)絕緣(yuan)損(sun)壞而外殼帶(dai)電(dian)時,電(dian)機M2的(de)外殼也帶(dai)電(dian),由于電(dian)流(liu)沒有經(jing)過漏(lou)(lou)電(dian)保護器,所(suo)以(yi)未(wei)起到(dao)漏(lou)(lou)電(dian)保護的(de)作(zuo)用(yong)(yong)。
4、單相(xiang)負(fu)荷應盡可能均(jun)衡(heng)(heng)分配(pei)(pei)。如果分配(pei)(pei)不(bu)(bu)均(jun)(如一相(xiang)的線路偏(pian)(pian)長,設備集(ji)中),則負(fu)荷較重的一相(xiang),其漏電電流偏(pian)(pian)大,因(yin)而(er)干(gan)線的三相(xiang)不(bu)(bu)平衡(heng)(heng)漏電電流增大,達(da)到(dao)一定值時(shi)就(jiu)會使干(gan)線首端的漏電保護器動(dong)作。
5、被保護(hu)的(de)線(xian)(xian)(xian)路(包括工作零線(xian)(xian)(xian))應全(quan)部穿(chuan)過零序電(dian)(dian)(dian)(dian)流互感器(qi)(qi)(qi)和漏(lou)(lou)電(dian)(dian)(dian)(dian)保護(hu)器(qi)(qi)(qi)的(de)貫穿(chuan)孔,不得用(yong)三(san)極(ji)漏(lou)(lou)電(dian)(dian)(dian)(dian)保護(hu)器(qi)(qi)(qi)代替四極(ji)三(san)相四極(ji)、漏(lou)(lou)電(dian)(dian)(dian)(dian)保護(hu)器(qi)(qi)(qi)。如果是三(san)相五線(xian)(xian)(xian)制,則(ze)保護(hu)地(di)線(xian)(xian)(xian)不得穿(chuan)過漏(lou)(lou)電(dian)(dian)(dian)(dian)保護(hu)器(qi)(qi)(qi)的(de)互感器(qi)(qi)(qi),而必須跨接(jie)到第一極(ji)漏(lou)(lou)電(dian)(dian)(dian)(dian)保護(hu)器(qi)(qi)(qi)前(qian)端(進線(xian)(xian)(xian)端)的(de)零干線(xian)(xian)(xian)上(shang)或重復接(jie)地(di)極(ji)上(shang)。
下面小編以1P+N漏電保護開關、2P漏電保護開關、3P漏電保護開關為例,教你們怎么給漏電開關接線。
1P+N的漏電保護開關接線方法
現在家裝(zhuang)中1P+N的(de)漏電(dian)保護(hu)開關使用率很高,這種(zhong)開關對火(huo)(huo)(huo)線(xian)(xian)和零線(xian)(xian)的(de)接(jie)線(xian)(xian)有著(zhu)嚴(yan)格的(de)要求(qiu),不(bu)是(shi)(shi)按照我們常規(gui)的(de)左(zuo)零右火(huo)(huo)(huo)或(huo)者是(shi)(shi)左(zuo)火(huo)(huo)(huo)右零來(lai)判斷的(de),要根(gen)據漏電(dian)保護(hu)開關上(shang)(shang)的(de)標(biao)識來(lai)進行接(jie)線(xian)(xian),也就是(shi)(shi)火(huo)(huo)(huo)線(xian)(xian)接(jie)在L上(shang)(shang)或(huo)者沒有標(biao)識的(de)那個(ge)接(jie)線(xian)(xian)端子(zi)上(shang)(shang),零線(xian)(xian)接(jie)在標(biao)有N的(de)接(jie)線(xian)(xian)端子(zi)上(shang)(shang)。
2P的漏電保護開關接線方法
2P的(de)漏電保(bao)護(hu)開(kai)關(guan)(guan)(guan)相(xiang)對于1P+N的(de)漏電保(bao)護(hu)開(kai)關(guan)(guan)(guan)來說,占(zhan)用空(kong)間較大價(jia)格較高,但是2P的(de)漏電保(bao)護(hu)開(kai)關(guan)(guan)(guan)的(de)安全性要明顯高于1P+N的(de)漏電保(bao)護(hu)開(kai)關(guan)(guan)(guan)來,現在被越來越多采用;
2P的漏電保護開關的接(jie)線(xian)(xian)(xian)是沒有嚴(yan)格要求(qiu)的,也就是說(shuo)進(jin)出線(xian)(xian)(xian)的接(jie)線(xian)(xian)(xian)端子可以(yi)隨意(yi)接(jie)火線(xian)(xian)(xian)和零線(xian)(xian)(xian),常規的接(jie)法有左(zuo)零右火也有左(zuo)火右零,這兩(liang)種接(jie)法其實(shi)都是可以(yi)的,我(wo)們只要保證進(jin)線(xian)(xian)(xian)和出線(xian)(xian)(xian)的接(jie)線(xian)(xian)(xian)一(yi)致就可以(yi)了。
3P的漏電保護開關接線方法
3P的漏電保護開關在我們大多(duo)數家(jia)庭里是看(kan)不到的,只(zhi)是會(hui)出現(xian)在別(bie)墅里,家(jia)裝中(zhong)使用率很低,只(zhi)給大家(jia)簡單說說。
3P的(de)(de)(de)漏(lou)電(dian)(dian)保護開關(guan)的(de)(de)(de)接線(xian)也是有(you)著嚴(yan)格要求的(de)(de)(de),其中(zhong)的(de)(de)(de)零(ling)(ling)線(xian)N都會被在漏(lou)電(dian)(dian)保護開關(guan)上標(biao)識出來(lai),我們接線(xian)時一般都是左面(mian)(mian)三個(ge)接線(xian)端子(zi)接火線(xian)的(de)(de)(de)三相(xiang),右面(mian)(mian)的(de)(de)(de)那個(ge)標(biao)記有(you)N的(de)(de)(de)用來(lai)接零(ling)(ling)線(xian)。
漏電開關接線注意事項
1、漏(lou)電保(bao)護器負(fu)載(zai)側的中性線,不(bu)得與其他(ta)回(hui)路共用(yong)。
2、漏電(dian)保護(hu)器標有負(fu)載(zai)側(ce)和電(dian)源側(ce)時,應(ying)按規定安裝接線(xian),不得反(fan)接。
3、安裝帶有短路保(bao)護(hu)的(de)漏電(dian)(dian)保(bao)護(hu)器(qi),必須保(bao)證在電(dian)(dian)弧噴出方向有足夠的(de)飛弧距離。飛弧距離大小按漏電(dian)(dian)保(bao)護(hu)器(qi)生產廠(chang)家的(de)規定。
4、安裝時必(bi)須嚴格(ge)區分(fen)中性(xing)線(xian)和保(bao)護線(xian),三極四線(xian)式或四極式漏(lou)電(dian)保(bao)護器的中性(xing)線(xian)應接(jie)入漏(lou)電(dian)保(bao)護器。經(jing)過漏(lou)電(dian)保(bao)護器的中性(xing)線(xian)不(bu)得(de)作(zuo)為(wei)保(bao)護線(xian),不(bu)得(de)重復接(jie)地或接(jie)設(she)備外(wai)漏(lou)可(ke)導電(dian)部分(fen)。保(bao)護線(xian)不(bu)得(de)接(jie)入漏(lou)電(dian)保(bao)護裝置(zhi)。
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