低壓電器有哪些分類方法

1、按用(yong)途(tu)和控制(zhi)對象不同(tong)，可將低壓電(dian)(dian)(dian)器(qi)(qi)(qi)分(fen)為配(pei)電(dian)(dian)(dian)電(dian)(dian)(dian)器(qi)(qi)(qi)和控制(zhi)電(dian)(dian)(dian)器(qi)(qi)(qi)。用(yong)于電(dian)(dian)(dian)能(neng)的輸送和分(fen)配(pei)的電(dian)(dian)(dian)器(qi)(qi)(qi)稱(cheng)為低壓配(pei)電(dian)(dian)(dian)電(dian)(dian)(dian)器(qi)(qi)(qi)，這(zhe)類電(dian)(dian)(dian)器(qi)(qi)(qi)包(bao)括刀(dao)開關、轉換開關、空氣斷路(lu)器(qi)(qi)(qi)和熔斷器(qi)(qi)(qi)等(deng)。用(yong)于各種(zhong)(zhong)控制(zhi)電(dian)(dian)(dian)路(lu)和控制(zhi)系統的電(dian)(dian)(dian)器(qi)(qi)(qi)稱(cheng)為控制(zhi)電(dian)(dian)(dian)器(qi)(qi)(qi)，這(zhe)類電(dian)(dian)(dian)器(qi)(qi)(qi)包(bao)括接(jie)觸器(qi)(qi)(qi)、起(qi)動器(qi)(qi)(qi)和各種(zhong)(zhong)控制(zhi)繼(ji)電(dian)(dian)(dian)器(qi)(qi)(qi)等(deng)。

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2、按操作(zuo)方式(shi)不同(tong)，可將(jiang)低壓電(dian)(dian)器(qi)(qi)分(fen)(fen)為(wei)(wei)自動(dong)(dong)電(dian)(dian)器(qi)(qi)和手動(dong)(dong)電(dian)(dian)器(qi)(qi)。通過電(dian)(dian)器(qi)(qi)本身參數變化或外來(lai)信號（如電(dian)(dian)、磁(ci)、光、熱等(deng)）自動(dong)(dong)完成接通、分(fen)(fen)斷、起(qi)動(dong)(dong)、反向(xiang)和停止等(deng)動(dong)(dong)作(zuo)的(de)電(dian)(dian)器(qi)(qi)稱為(wei)(wei)自動(dong)(dong)電(dian)(dian)器(qi)(qi)，常用的(de)自動(dong)(dong)電(dian)(dian)器(qi)(qi)有接觸(chu)器(qi)(qi)、繼電(dian)(dian)器(qi)(qi)等(deng)。通過人(ren)力直(zhi)接操作(zuo)來(lai)完成接通、分(fen)(fen)斷、起(qi)動(dong)(dong)、反向(xiang)和停止等(deng)動(dong)(dong)作(zuo)的(de)電(dian)(dian)器(qi)(qi)稱為(wei)(wei)手動(dong)(dong)電(dian)(dian)器(qi)(qi)。常用的(de)手動(dong)(dong)電(dian)(dian)器(qi)(qi)有刀開關(guan)、轉(zhuan)換開關(guan)和主令電(dian)(dian)器(qi)(qi)等(deng)。

3、按工作原理，低壓(ya)電(dian)(dian)器(qi)可分為(wei)電(dian)(dian)磁(ci)式(shi)電(dian)(dian)器(qi)和非(fei)電(dian)(dian)量(liang)(liang)(liang)控(kong)制電(dian)(dian)器(qi)。電(dian)(dian)磁(ci)式(shi)電(dian)(dian)器(qi)是依據電(dian)(dian)磁(ci)感應原理來工作的電(dian)(dian)器(qi)，如接觸器(qi)、各(ge)類電(dian)(dian)磁(ci)式(shi)繼電(dian)(dian)器(qi)等。非(fei)電(dian)(dian)量(liang)(liang)(liang)控(kong)制電(dian)(dian)器(qi)的工作是靠外(wai)力或某(mou)種非(fei)電(dian)(dian)量(liang)(liang)(liang)的變(bian)化而動作的電(dian)(dian)器(qi)，如行程(cheng)開關、速(su)度繼電(dian)(dian)器(qi)等。

常見低壓電器是怎么工作的

1、刀開關

刀開(kai)關(guan)(guan)又(you)稱為(wei)閘刀開(kai)關(guan)(guan)或(huo)隔離(li)(li)開(kai)關(guan)(guan)，它(ta)是通過底座上(shang)的(de)靜觸頭與刀夾(jia)座相楔合（或(huo)分離(li)(li)），來控制電(dian)路(lu)接通（或(huo)分斷(duan)）的(de)低(di)壓電(dian)器設備。

2、熔斷器

熔(rong)(rong)(rong)斷(duan)(duan)(duan)器也(ye)被(bei)(bei)稱為(wei)保(bao)險絲，IEC127標準將(jiang)它定義(yi)為(wei)“熔(rong)(rong)(rong)斷(duan)(duan)(duan)體(ti)（fuse-link）”。熔(rong)(rong)(rong)斷(duan)(duan)(duan)器的(de)(de)工作原理很簡單，當(dang)過載或短(duan)路(lu)電(dian)流通(tong)過熔(rong)(rong)(rong)斷(duan)(duan)(duan)器時，電(dian)流產生的(de)(de)熱量(liang)會(hui)使熔(rong)(rong)(rong)斷(duan)(duan)(duan)器中的(de)(de)熔(rong)(rong)(rong)體(ti)熔(rong)(rong)(rong)斷(duan)(duan)(duan)，從而保(bao)護(hu)電(dian)路(lu)不被(bei)(bei)損(sun)壞。

3、低壓斷路器

低壓(ya)斷(duan)路器(qi)曾(ceng)被稱為自(zi)動開(kai)關，其(qi)工作(zuo)原理與(yu)熔斷(duan)器(qi)差(cha)不多，但功能要多一點，它是一種既有手動開(kai)關作(zuo)用，又能自(zi)動進行失壓(ya)、欠壓(ya)、過載(zai)、和(he)短路保護的電器(qi)。

4、接觸器

接(jie)觸器主(zhu)要利(li)用(yong)了(le)電(dian)磁感應原理，當(dang)接(jie)觸器線(xian)(xian)圈(quan)通(tong)電(dian)后，線(xian)(xian)圈(quan)電(dian)流會產(chan)生磁場，產(chan)生的磁場使靜(jing)鐵芯產(chan)生電(dian)磁吸力(li)吸引(yin)動(dong)(dong)鐵芯，并帶(dai)動(dong)(dong)交流接(jie)觸器點(dian)(dian)動(dong)(dong)作，常(chang)閉觸點(dian)(dian)斷開，常(chang)開觸點(dian)(dian)閉合(he)。當(dang)線(xian)(xian)圈(quan)斷電(dian)時，電(dian)磁吸力(li)消失，銜鐵在釋放彈簧的作用(yong)下(xia)釋放，使觸點(dian)(dian)復原，常(chang)開觸點(dian)(dian)斷開，常(chang)閉觸點(dian)(dian)閉合(he)。

5、繼電器

繼電(dian)(dian)器有很多(duo)種類，不同類型的(de)(de)繼電(dian)(dian)器，工作原理略(lve)有不同，但它們的(de)(de)基本(ben)原理是相似的(de)(de)，都利用了電(dian)(dian)磁效應來(lai)控制機械觸點(dian)，來(lai)而達到通斷目的(de)(de)。