你知道LED顯示屏頻繁跳閘應如何解決？
2022-10-30 來源：lzsjw.com.cn
現如(ru)今LED顯示屏在我們(men)的(de)日常生活(huo)中的(de)應用是(shi)廣泛的(de)，諸多(duo)企業(ye)和(he)政府部(bu)門(men)都會用到(dao)，很多(duo)為(wei)了給產品(pin)宣(xuan)傳(chuan)廣告的(de)中小企業(ye)也會用到(dao)。即便如(ru)此，為(wei)了經營(ying)安全，LED顯示屏在使用前也必須(xu)知道發生故障的(de)解決方法(fa)。
一、漏(lou)(lou)電(dian)(dian)導致不合理引起的跳閘(zha)。 由于LED電(dian)(dian)子(zi)顯示(shi)屏(ping)安裝現場特殊(shu)性，像常見的接線錯(cuo)誤(wu)、線路破(po)損、開關(guan)箱漏(lou)(lou)電(dian)(dian)保護(hu)器(qi)(qi)損壞、電(dian)(dian)器(qi)(qi)沒(mei)有(you)經過開關(guan)箱等原(yuan)因。本身(shen)是不可避免的誤(wu)動(dong)和拒動(dong)，外加沒(mei)有(you)按照用電(dian)(dian)情況對漏(lou)(lou)電(dian)(dian)保護(hu)器(qi)(qi)進行保護(hu)措施(shi)，所以造成了總漏(lou)(lou)電(dian)(dian)保護(hu)器(qi)(qi)頻繁跳閘(zha)。
二(er)、LED大屏保(bao)(bao)護范(fan)圍內(nei)沒(mei)有(you)二(er)三級(ji)(ji)漏(lou)電(dian)(dian)保(bao)(bao)護。很多(duo)人(ren)不知道，開關箱內(nei)的(de)(de)末級(ji)(ji)漏(lou)電(dian)(dian)保(bao)(bao)護器是用電(dian)(dian)設(she)備的(de)(de)主保(bao)(bao)護，如(ru)果末級(ji)(ji)漏(lou)電(dian)(dian)保(bao)(bao)護器沒(mei)有(you)安裝，又(you)或(huo)(huo)者選型不當，再或(huo)(huo)者是安裝后(hou)因(yin)為(wei)使用不慎(shen)導(dao)致損壞(huai)，都可(ke)能導(dao)致頻繁的(de)(de)跳閘(zha)。由(you)于全彩顯示屏內(nei)金屬導(dao)體多(duo)，電(dian)(dian)線接頭多(duo)，如(ru)果導(dao)線絕緣不好，就會(hui)導(dao)致漏(lou)電(dian)(dian)的(de)(de)狀況。有(you)些LED顯示屏廠家增加了插(cha)座，為(wei)的(de)(de)就是在(zai)每個(ge)保(bao)(bao)護范(fan)圍內(nei)形成有(you)效(xiao)的(de)(de)二(er)級(ji)(ji)或(huo)(huo)三級(ji)(ji)漏(lou)電(dian)(dian)保(bao)(bao)護模式(shi)，做到有(you)效(xiao)地減少漏(lou)電(dian)(dian)保(bao)(bao)護器頻繁跳閘(zha)。
三、漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)保護(hu)器本身有一(yi)定(ding) 局(ju)限性。目前的漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)保護(hu)器不(bu)論(lun)是電(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)(ci)(ci)型還是電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)型，都(dou)(dou)是采用磁(ci)(ci)(ci)感應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)壓互感器拾取用電(dian)(dian)(dian)(dian)(dian)(dian)設備主回(hui)路(lu)中的漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)流，三相(xiang)或三相(xiang)四線在磁(ci)(ci)(ci)環(huan)中都(dou)(dou)不(bu)可(ke)能布(bu)置(zhi)完全均衡。LED電(dian)(dian)(dian)(dian)(dian)(dian)子(zi)顯示屏的三相(xiang)用電(dian)(dian)(dian)(dian)(dian)(dian)負荷更不(bu)可(ke)能完全平衡，在大電(dian)(dian)(dian)(dian)(dian)(dian)流與高的電(dian)(dian)(dian)(dian)(dian)(dian)壓下(xia)，會在高導(dao)磁(ci)(ci)(ci)率的磁(ci)(ci)(ci)環(huan)感應(ying)出一(yi)定(ding)的電(dian)(dian)(dian)(dian)(dian)(dian)動勢，這(zhe)個電(dian)(dian)(dian)(dian)(dian)(dian)動勢超過一(yi)定(ding)程度便會導(dao)致漏(lou)電(dian)(dian)(dian)(dian)(dian)(dian)保護(hu)器頻(pin)繁(fan)跳閘。
