低壓電器有哪些分類方法

1、按(an)用(yong)(yong)(yong)途和(he)控(kong)制(zhi)(zhi)對(dui)象不同，可將低(di)壓電(dian)器(qi)(qi)(qi)分為(wei)(wei)配電(dian)電(dian)器(qi)(qi)(qi)和(he)控(kong)制(zhi)(zhi)電(dian)器(qi)(qi)(qi)。用(yong)(yong)(yong)于(yu)電(dian)能(neng)的(de)輸送和(he)分配的(de)電(dian)器(qi)(qi)(qi)稱(cheng)為(wei)(wei)低(di)壓配電(dian)電(dian)器(qi)(qi)(qi)，這類(lei)電(dian)器(qi)(qi)(qi)包括刀開關、轉換(huan)開關、空氣斷路器(qi)(qi)(qi)和(he)熔斷器(qi)(qi)(qi)等。用(yong)(yong)(yong)于(yu)各種控(kong)制(zhi)(zhi)電(dian)路和(he)控(kong)制(zhi)(zhi)系(xi)統(tong)的(de)電(dian)器(qi)(qi)(qi)稱(cheng)為(wei)(wei)控(kong)制(zhi)(zhi)電(dian)器(qi)(qi)(qi)，這類(lei)電(dian)器(qi)(qi)(qi)包括接(jie)觸器(qi)(qi)(qi)、起動器(qi)(qi)(qi)和(he)各種控(kong)制(zhi)(zhi)繼(ji)電(dian)器(qi)(qi)(qi)等。

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2、按操作方式不(bu)同，可(ke)將低壓(ya)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)分(fen)為(wei)自動(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)和手(shou)(shou)動(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)。通過電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)本身參數(shu)變化或外來(lai)信(xin)號（如電(dian)(dian)(dian)、磁、光、熱等(deng)）自動(dong)(dong)完成(cheng)接通、分(fen)斷(duan)、起動(dong)(dong)、反(fan)向和停(ting)止(zhi)等(deng)動(dong)(dong)作的電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)稱(cheng)為(wei)自動(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)，常用的自動(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)有接觸器(qi)(qi)(qi)(qi)、繼電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)等(deng)。通過人力直接操作來(lai)完成(cheng)接通、分(fen)斷(duan)、起動(dong)(dong)、反(fan)向和停(ting)止(zhi)等(deng)動(dong)(dong)作的電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)稱(cheng)為(wei)手(shou)(shou)動(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)。常用的手(shou)(shou)動(dong)(dong)電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)有刀開關、轉換開關和主令電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)等(deng)。

3、按工(gong)作原理，低壓電(dian)(dian)(dian)(dian)器(qi)可分(fen)為電(dian)(dian)(dian)(dian)磁式電(dian)(dian)(dian)(dian)器(qi)和非(fei)(fei)(fei)電(dian)(dian)(dian)(dian)量控(kong)制(zhi)電(dian)(dian)(dian)(dian)器(qi)。電(dian)(dian)(dian)(dian)磁式電(dian)(dian)(dian)(dian)器(qi)是依據電(dian)(dian)(dian)(dian)磁感應原理來工(gong)作的(de)(de)電(dian)(dian)(dian)(dian)器(qi)，如(ru)接觸(chu)器(qi)、各(ge)類電(dian)(dian)(dian)(dian)磁式繼(ji)(ji)電(dian)(dian)(dian)(dian)器(qi)等。非(fei)(fei)(fei)電(dian)(dian)(dian)(dian)量控(kong)制(zhi)電(dian)(dian)(dian)(dian)器(qi)的(de)(de)工(gong)作是靠外力或某種(zhong)非(fei)(fei)(fei)電(dian)(dian)(dian)(dian)量的(de)(de)變化而動作的(de)(de)電(dian)(dian)(dian)(dian)器(qi)，如(ru)行程開(kai)關、速度繼(ji)(ji)電(dian)(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)(kai)關(guan)又(you)稱為閘刀開(kai)(kai)關(guan)或(huo)隔離開(kai)(kai)關(guan)，它是通過底座上(shang)的(de)靜觸頭與刀夾座相楔合（或(huo)分(fen)離），來(lai)控(kong)制電路接通（或(huo)分(fen)斷）的(de)低壓電器設備(bei)。

2、熔斷器

熔(rong)斷器也被稱為保(bao)險絲，IEC127標(biao)準(zhun)將它定義為“熔(rong)斷體（fuse-link）”。熔(rong)斷器的工作(zuo)原理很簡單，當過載(zai)或短路電(dian)流(liu)通過熔(rong)斷器時(shi)，電(dian)流(liu)產(chan)生的熱(re)量(liang)會使熔(rong)斷器中的熔(rong)體熔(rong)斷，從而保(bao)護電(dian)路不被損壞。

3、低壓斷路器

低壓斷路器(qi)曾被稱為自動(dong)(dong)開關，其(qi)工作(zuo)原理與熔斷器(qi)差不(bu)多，但(dan)功能要多一(yi)點(dian)，它是一(yi)種既有(you)手動(dong)(dong)開關作(zuo)用，又(you)能自動(dong)(dong)進(jin)行失壓、欠壓、過載、和短路保護的電器(qi)。

4、接觸器

接(jie)觸器主(zhu)要利用了電(dian)磁(ci)(ci)感應原(yuan)理，當接(jie)觸器線圈(quan)通(tong)電(dian)后，線圈(quan)電(dian)流會產(chan)生磁(ci)(ci)場，產(chan)生的磁(ci)(ci)場使(shi)靜鐵芯(xin)產(chan)生電(dian)磁(ci)(ci)吸力吸引動(dong)鐵芯(xin)，并帶動(dong)交流接(jie)觸器點動(dong)作，常閉觸點斷開，常開觸點閉合。當線圈(quan)斷電(dian)時，電(dian)磁(ci)(ci)吸力消失，銜鐵在(zai)釋(shi)放(fang)(fang)彈簧的作用下釋(shi)放(fang)(fang)，使(shi)觸點復原(yuan)，常開觸點斷開，常閉觸點閉合。

5、繼電器

繼電器有(you)很多(duo)種類(lei)，不同類(lei)型的(de)繼電器，工(gong)作原理略有(you)不同，但它們的(de)基本原理是相似(si)的(de)，都利用了電磁(ci)效應(ying)來控制機械觸點，來而(er)達(da)到通斷目的(de)。