低壓電器有哪些分類方法

1、按用途和(he)(he)(he)控(kong)制對象不同，可將(jiang)低壓電(dian)(dian)(dian)器(qi)分(fen)為(wei)配電(dian)(dian)(dian)電(dian)(dian)(dian)器(qi)和(he)(he)(he)控(kong)制電(dian)(dian)(dian)器(qi)。用于電(dian)(dian)(dian)能的(de)(de)輸送和(he)(he)(he)分(fen)配的(de)(de)電(dian)(dian)(dian)器(qi)稱為(wei)低壓配電(dian)(dian)(dian)電(dian)(dian)(dian)器(qi)，這(zhe)類(lei)電(dian)(dian)(dian)器(qi)包括刀開關、轉換開關、空氣斷路(lu)器(qi)和(he)(he)(he)熔斷器(qi)等(deng)。用于各種(zhong)控(kong)制電(dian)(dian)(dian)路(lu)和(he)(he)(he)控(kong)制系(xi)統的(de)(de)電(dian)(dian)(dian)器(qi)稱為(wei)控(kong)制電(dian)(dian)(dian)器(qi)，這(zhe)類(lei)電(dian)(dian)(dian)器(qi)包括接觸器(qi)、起動器(qi)和(he)(he)(he)各種(zhong)控(kong)制繼電(dian)(dian)(dian)器(qi)等(deng)。

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2、按(an)操作(zuo)方式不同(tong)，可將低壓(ya)電(dian)(dian)(dian)器(qi)(qi)分(fen)為自(zi)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)和(he)手(shou)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)。通(tong)過電(dian)(dian)(dian)器(qi)(qi)本身(shen)參數(shu)變化或(huo)外來信號（如電(dian)(dian)(dian)、磁、光、熱等）自(zi)動(dong)(dong)(dong)(dong)(dong)完(wan)成(cheng)接通(tong)、分(fen)斷(duan)、起(qi)動(dong)(dong)(dong)(dong)(dong)、反(fan)向(xiang)和(he)停止(zhi)等動(dong)(dong)(dong)(dong)(dong)作(zuo)的(de)電(dian)(dian)(dian)器(qi)(qi)稱為自(zi)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)，常(chang)用的(de)自(zi)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)有(you)接觸(chu)器(qi)(qi)、繼電(dian)(dian)(dian)器(qi)(qi)等。通(tong)過人(ren)力直接操作(zuo)來完(wan)成(cheng)接通(tong)、分(fen)斷(duan)、起(qi)動(dong)(dong)(dong)(dong)(dong)、反(fan)向(xiang)和(he)停止(zhi)等動(dong)(dong)(dong)(dong)(dong)作(zuo)的(de)電(dian)(dian)(dian)器(qi)(qi)稱為手(shou)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)。常(chang)用的(de)手(shou)動(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)有(you)刀開(kai)關、轉換開(kai)關和(he)主(zhu)令電(dian)(dian)(dian)器(qi)(qi)等。

3、按(an)工作(zuo)原理，低壓電(dian)(dian)(dian)器(qi)可分(fen)為電(dian)(dian)(dian)磁(ci)式(shi)電(dian)(dian)(dian)器(qi)和(he)非(fei)電(dian)(dian)(dian)量(liang)控制電(dian)(dian)(dian)器(qi)。電(dian)(dian)(dian)磁(ci)式(shi)電(dian)(dian)(dian)器(qi)是(shi)(shi)依(yi)據電(dian)(dian)(dian)磁(ci)感應(ying)原理來(lai)工作(zuo)的電(dian)(dian)(dian)器(qi)，如接觸器(qi)、各類電(dian)(dian)(dian)磁(ci)式(shi)繼(ji)電(dian)(dian)(dian)器(qi)等。非(fei)電(dian)(dian)(dian)量(liang)控制電(dian)(dian)(dian)器(qi)的工作(zuo)是(shi)(shi)靠外力或某(mou)種非(fei)電(dian)(dian)(dian)量(liang)的變(bian)化而(er)動(dong)作(zuo)的電(dian)(dian)(dian)器(qi)，如行程開關、速度(du)繼(ji)電(dian)(dian)(dian)器(qi)等。

常見低壓電器是怎么工作的

1、刀開關

刀開(kai)關又稱為閘(zha)刀開(kai)關或隔離開(kai)關，它是通過底座上的靜觸頭與(yu)刀夾座相楔合（或分離），來控制電路接通（或分斷(duan)）的低壓電器設備(bei)。

2、熔斷器

熔(rong)斷(duan)(duan)器(qi)也(ye)被稱為(wei)保險絲(si)，IEC127標準將它定義為(wei)“熔(rong)斷(duan)(duan)體(ti)（fuse-link）”。熔(rong)斷(duan)(duan)器(qi)的(de)工(gong)作原理(li)很(hen)簡單，當過(guo)載或短路電(dian)(dian)流通(tong)過(guo)熔(rong)斷(duan)(duan)器(qi)時(shi)，電(dian)(dian)流產生的(de)熱量會使(shi)熔(rong)斷(duan)(duan)器(qi)中的(de)熔(rong)體(ti)熔(rong)斷(duan)(duan)，從(cong)而保護(hu)電(dian)(dian)路不被損壞。

3、低壓斷路器

低壓斷路(lu)器(qi)(qi)曾被稱(cheng)為(wei)自動開(kai)關，其工作(zuo)原(yuan)理與熔斷器(qi)(qi)差不多，但功能要(yao)多一點，它是(shi)一種既(ji)有(you)手動開(kai)關作(zuo)用(yong)，又能自動進行失壓、欠(qian)壓、過(guo)載、和短(duan)路(lu)保護(hu)的(de)電器(qi)(qi)。

4、接觸器

接觸(chu)(chu)器主要利用了(le)電(dian)磁感應原理，當接觸(chu)(chu)器線(xian)圈(quan)通(tong)電(dian)后，線(xian)圈(quan)電(dian)流(liu)會產生磁場，產生的磁場使(shi)靜鐵芯(xin)產生電(dian)磁吸力吸引動鐵芯(xin)，并(bing)帶動交流(liu)接觸(chu)(chu)器點(dian)動作(zuo)，常閉觸(chu)(chu)點(dian)斷開(kai)，常開(kai)觸(chu)(chu)點(dian)閉合(he)。當線(xian)圈(quan)斷電(dian)時，電(dian)磁吸力消失，銜鐵在釋放彈簧的作(zuo)用下釋放，使(shi)觸(chu)(chu)點(dian)復原，常開(kai)觸(chu)(chu)點(dian)斷開(kai)，常閉觸(chu)(chu)點(dian)閉合(he)。

5、繼電器

繼電(dian)器(qi)(qi)有很(hen)多(duo)種類(lei)，不同(tong)類(lei)型(xing)的(de)(de)繼電(dian)器(qi)(qi)，工作原理(li)略有不同(tong)，但(dan)它(ta)們的(de)(de)基本原理(li)是相(xiang)似的(de)(de)，都利(li)用了電(dian)磁效應來(lai)(lai)控制機械觸點，來(lai)(lai)而達(da)到通斷目(mu)的(de)(de)。