電機綜合保護器,本質(zhi)就是集(ji)成(cheng)(cheng)了電機(ji)的保(bao)護(hu)電路和器件,保(bao)護(hu)電路主要由欠壓保(bao)護(hu)、過流保(bao)護(hu)、短路保(bao)護(hu)等(deng)組成(cheng)(cheng),對于(yu)無(wu)刷(shua)直流電機(ji),有控制器,在控制器里邊集(ji)成(cheng)(cheng)保(bao)護(hu)器,所以一般(ban)就是一些霍爾元(yuan)件,穩壓管,運放,電阻,電容,三(san)極管等(deng)器件,可以從電路上(shang)去理(li)解的。
而(er)對于普通的交流異步(bu)電(dian)(dian)(dian)(dian)機(ji)(ji)而(er)言,一般采用繼電(dian)(dian)(dian)(dian)器,接觸(chu)器,空(kong)(kong)開(kai),熱繼電(dian)(dian)(dian)(dian)器,保(bao)險等(deng)器件來(lai)組(zu)(zu)成電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)保(bao)護(hu)裝置,而(er)現在更多的企(qi)業都是采樣智能(neng)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)保(bao)護(hu)器+接觸(chu)器+空(kong)(kong)開(kai)等(deng)器件來(lai)組(zu)(zu)成電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)保(bao)護(hu)裝置,用智能(neng)電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)保(bao)護(hu)器保(bao)護(hu)效(xiao)果更靈敏,功能(neng)更加齊全,對電(dian)(dian)(dian)(dian)動(dong)機(ji)(ji)的缺相,過(guo)載(zai),三相不平衡,堵轉,短路,欠(qian)載(zai),空(kong)(kong)載(zai),過(guo)欠(qian)壓等(deng)都能(neng)有效(xiao)的保(bao)護(hu)。
運用方法:
1、過電流(liu)保護設(she)定(ding)方法:把(ba)面板上的(de)(de)撥動(dong)開(kai)關撥至設(she)定(ding)位置,調(diao)整電流(liu)調(diao)節電位器(qi)使(shi)電流(liu)顯示器(qi)數(shu)字為該(gai)電動(dong)機的(de)(de)額定(ding)電流(liu)值,再把(ba)開(kai)關撥到運行位置,此時顯示器(qi)上的(de)(de)數(shu)字為該(gai)電動(dong)機的(de)(de)工作電流(liu)。
2、啟(qi)動(dong)(dong)延(yan)時設定方(fang)法(fa):全壓啟(qi)動(dong)(dong)可調至最小,總之啟(qi)動(dong)(dong)延(yan)時時間要根(gen)據用戶設備需要自(zi)行調整。
3、復(fu)位方(fang)法:當電機發(fa)生(sheng)故障跳閘后(hou),故障指示燈亮(liang),保(bao)護裝置處于記憶狀態,按下面板上復(fu)位健方(fang)可復(fu)。
擴展資料
電機綜合保護器在使(shi)用時(shi),必(bi)須設置電(dian)(dian)(dian)(dian)機的(de)“工作電(dian)(dian)(dian)(dian)流”。目前使(shi)用的(de)電(dian)(dian)(dian)(dian)機保護器,主要是與交(jiao)流接觸器配合(he)使(shi)用,實現防缺相,防過流,主要目的(de)是在電(dian)(dian)(dian)(dian)機內(nei)部線(xian)圈短(duan)路之前,自動提前關(guan)(guan)閉(bi)電(dian)(dian)(dian)(dian)機。以免漏(lou)(lou)電(dian)(dian)(dian)(dian)開關(guan)(guan)跳(tiao)閘,特(te)別(bie)是總漏(lou)(lou)電(dian)(dian)(dian)(dian)開關(guan)(guan)跳(tiao)閘停電(dian)(dian)(dian)(dian)。
初次(ci)使(shi)用,必須設置(zhi)電流整定(ding),方法是在連接好電機(ji)后(hou),閉合開(kai)關,讓電機(ji)運轉,然(ran)后(hou)用小一(yi)字(zi)螺絲刀,把保護器上(shang)的箭頭旋(xuan)鈕(niu)轉動到“過(guo)載”燈剛(gang)剛(gang)好熄滅的位置(zhi)。
按照實際(ji)使用經驗,即使在(zai)“過載”燈“閃爍”的狀態,只要(yao)在(zai)超過3分鐘沒有啟動(dong)保護關(guan)機(ji),也是可以接(jie)受的。總之,最終的調節位置(zhi)不能“過”。“閃”或“剛剛熄滅”都可以,觀(guan)察電機(ji)運行(xing)3-10分鐘,不會啟動(dong)保護關(guan)機(ji)就可以了。