真(zhen)空(kong)(kong)接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)由(you)(you)真(zhen)空(kong)(kong)開關管、絕緣架(jia)，動臂(bei)(bei)、磁路(lu)支撐架(jia)、電(dian)(dian)(dian)(dian)磁操作機(ji)構(gou)及(ji)整流(liu)(liu)裝置組成。電(dian)(dian)(dian)(dian)磁操作機(ji)構(gou)由(you)(you)鐵心、線圈(quan)、磁極板、銜鐵板、轉(zhuan)軸(zhou)、動臂(bei)(bei)等組成。真(zhen)空(kong)(kong)接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)熄弧(hu)能(neng)力(li)強，耐(nai)壓(ya)性(xing)能(neng)好，操作頻率較(jiao)高(gao)，壽(shou)命長，無電(dian)(dian)(dian)(dian)弧(hu)外噴，體積小、重量輕(qing)、維修周期(qi)較(jiao)長。真(zhen)空(kong)(kong)接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)的真(zhen)空(kong)(kong)滅弧(hu)室(shi)制造時工藝要求很高(gao)，如果工藝不良(liang)，滅弧(hu)室(shi)的真(zhen)空(kong)(kong)容易下(xia)降(jiang)。觸(chu)(chu)(chu)(chu)頭材料(liao)材質不好，在(zai)分(fen)斷(duan)(duan)電(dian)(dian)(dian)(dian)流(liu)(liu)時會(hui)(hui)出(chu)現 "截(jie)流(liu)(liu)過電(dian)(dian)(dian)(dian)壓(ya)"現象，即在(zai)分(fen)斷(duan)(duan)電(dian)(dian)(dian)(dian)流(liu)(liu)時，由(you)(you)于真(zhen)空(kong)(kong)滅弧(hu)室(shi)的熄弧(hu)能(neng)力(li)很強，電(dian)(dian)(dian)(dian)弧(hu)電(dian)(dian)(dian)(dian)流(liu)(liu)不是(shi)(shi)自然過零時切斷(duan)(duan)，而是(shi)(shi)從電(dian)(dian)(dian)(dian)流(liu)(liu)的某一值突然降(jiang)到零，由(you)(you)此(ci)而出(chu)現高(gao)的過電(dian)(dian)(dian)(dian)壓(ya)。截(jie)流(liu)(liu)電(dian)(dian)(dian)(dian)壓(ya)會(hui)(hui)危及(ji)電(dian)(dian)(dian)(dian)氣設(she)備的安全運行(xing)。真(zhen)空(kong)(kong)接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)是(shi)(shi)否(fou)有故(gu)障，可以根據其(qi)能(neng)否(fou)準確無誤地(di)合閘、分(fen)閘并(bing)可靠(kao)地(di)保持在(zai)合閘、分(fen)閘位置來判斷(duan)(duan)。主回(hui)路(lu)方面的故(gu)障，可以從接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)例行(xing)的檢修和(he)維護中發(fa)現并(bing)排除(chu)。真(zhen)空(kong)(kong)接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)在(zai)切除(chu)故(gu)障電(dian)(dian)(dian)(dian)路(lu)后不會(hui)(hui)產生火花和(he)電(dian)(dian)(dian)(dian)弧(hu)，減少了火災風險和(he)設(she)備損壞。成都低壓(ya)真(zhen)空(kong)(kong)接(jie)(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)價(jia)錢

選(xuan)擇(ze)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)時(shi)要(yao)從工(gong)(gong)作(zuo)環境出發，主(zhu)(zhu)(zhu)要(yao)考慮下(xia)面幾個(ge)因素：①控(kong)制交流(liu)(liu)(liu)負(fu)載應(ying)選(xuan)用(yong)交流(liu)(liu)(liu)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)，直(zhi)流(liu)(liu)(liu)負(fu)載選(xuan)用(yong)直(zhi)流(liu)(liu)(liu)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)。②主(zhu)(zhu)(zhu)觸(chu)(chu)(chu)(chu)頭的(de)(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)應(ying)大于(yu)(yu)等(deng)于(yu)(yu)負(fu)載電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，還要(yao)注意的(de)(de)(de)(de)(de)(de)是接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)主(zhu)(zhu)(zhu)觸(chu)(chu)(chu)(chu)頭的(de)(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)是在規定(ding)(ding)的(de)(de)(de)(de)(de)(de)條(tiao)件下(xia)（額(e)(e)定(ding)(ding)工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)、使用(yong)類別、操(cao)作(zuo)頻(pin)率(lv)等(deng)）能夠正常工(gong)(gong)作(zuo)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)值，當實際(ji)使用(yong)條(tiao)件不同(tong)時(shi)，這個(ge)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)值也(ye)將隨之改變。③主(zhu)(zhu)(zhu)觸(chu)(chu)(chu)(chu)頭的(de)(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)工(gong)(gong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)應(ying)大于(yu)(yu)等(deng)于(yu)(yu)負(fu)載電(dian)(dian)(dian)(dian)(dian)(dian)路的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。④線(xian)圈(quan)的(de)(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)應(ying)與控(kong)制回路電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)一(yi)致。2、接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)選(xuan)擇(ze)的(de)(de)(de)(de)(de)(de)具體(ti)步驟：①選(xuan)擇(ze)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)類型，需要(yao)根據負(fu)載種類選(xuan)擇(ze)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)類型。②選(xuan)擇(ze)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)參(can)數：根據被控(kong)對象和工(gong)(gong)作(zuo)參(can)數，如(ru)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)、電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)、功(gong)率(lv)、頻(pin)率(lv)等(deng)，確定(ding)(ding)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)額(e)(e)定(ding)(ding)參(can)數。（1）接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)線(xian)圈(quan)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，一(yi)般應(ying)低一(yi)些(xie)為好(hao)，這樣(yang)對接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)絕緣要(yao)求可(ke)(ke)以降(jiang)低，使用(yong)時(shi)也(ye)比較安全。當控(kong)制電(dian)(dian)(dian)(dian)(dian)(dian)路簡單，使用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)比較少時(shi)，可(ke)(ke)直(zhi)接(jie)選(xuan)用(yong)380V或220V的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)。若(ruo)電(dian)(dian)(dian)(dian)(dian)(dian)路復(fu)雜。使用(yong)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)個(ge)數超過5個(ge)時(shi)，可(ke)(ke)選(xuan)用(yong)36V或110V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)(de)(de)線(xian)圈(quan)，以保(bao)證安全。但為了方便和減少設備，常按實際(ji)電(dian)(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)選(xuan)取。（2）電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)機(ji)的(de)(de)(de)(de)(de)(de)操(cao)作(zuo)頻(pin)率(lv)不高，如(ru)壓(ya)(ya)縮機(ji)、水泵、風機(ji)、空(kong)調等(deng)，接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大于(yu)(yu)負(fu)載額(e)(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)即可(ke)(ke)。成都低壓(ya)(ya)真(zhen)空(kong)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)價(jia)錢真(zhen)空(kong)接(jie)觸(chu)(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)(de)(de)(de)(de)結構緊(jin)湊、體(ti)積小巧，適合于(yu)(yu)密(mi)集安裝和占地空(kong)間較小的(de)(de)(de)(de)(de)(de)應(ying)用(yong)場景。

當接通(tong)低壓(ya)變(bian)(bian)壓(ya)器負(fu)載(zai)(zai)時，變(bian)(bian)壓(ya)器因為(wei)二次(ci)(ci)(ci)側(ce)(ce)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)短(duan)(duan)路(lu)而(er)出現短(duan)(duan)時的(de)(de)陡峭大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，在(zai)(zai)(zai)一(yi)次(ci)(ci)(ci)側(ce)(ce)出現較大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，可(ke)達(da)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)15～20倍，它與變(bian)(bian)壓(ya)器的(de)(de)繞(rao)組布置(zhi)及鐵心(xin)特性有關。當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)焊機(ji)(ji)頻(pin)(pin)繁(fan)地(di)產(chan)生突發性的(de)(de)強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，從而(er)使(shi)(shi)變(bian)(bian)壓(ya)器的(de)(de)初級(ji)側(ce)(ce)的(de)(de)開關承受巨大(da)(da)的(de)(de)應力和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，所以必須(xu)按照變(bian)(bian)壓(ya)器的(de)(de)額(e)定(ding)(ding)功率(lv)下電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)極(ji)短(duan)(duan)路(lu)時一(yi)次(ci)(ci)(ci)側(ce)(ce)的(de)(de)短(duan)(duan)路(lu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)及焊接頻(pin)(pin)率(lv)來選(xuan)(xuan)(xuan)擇接觸器，即(ji)接通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大(da)(da)于二次(ci)(ci)(ci)側(ce)(ce)短(duan)(duan)路(lu)時一(yi)次(ci)(ci)(ci)側(ce)(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)。此(ci)類(lei)負(fu)載(zai)(zai)使(shi)(shi)用(yong)(yong)類(lei)別(bie)為(wei)AC-6a。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)用(yong)(yong)接觸器根(gen)據電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)使(shi)(shi)用(yong)(yong)情況及電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)類(lei)別(bie)可(ke)分別(bie)選(xuan)(xuan)(xuan)用(yong)(yong)AC-2～4，對于啟動(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)在(zai)(zai)(zai)6倍額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，分斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(wei)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)下可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)AC-3，如風機(ji)(ji)水泵等，可(ke)采(cai)用(yong)(yong)查表法(fa)及選(xuan)(xuan)(xuan)用(yong)(yong)曲線法(fa)，根(gen)據樣本及手冊(ce)選(xuan)(xuan)(xuan)用(yong)(yong)，不用(yong)(yong)再計算(suan)。 繞(rao)線式電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)接通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)及分斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)都(dou)是2.5倍額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，一(yi)般啟動(dong)(dong)(dong)(dong)時在(zai)(zai)(zai)轉(zhuan)子中串(chuan)入電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻以限制(zhi)啟動(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)，增加(jia)啟動(dong)(dong)(dong)(dong)轉(zhuan)矩，使(shi)(shi)用(yong)(yong)類(lei)別(bie)AC-2，可(ke)選(xuan)(xuan)(xuan)用(yong)(yong)轉(zhuan)動(dong)(dong)(dong)(dong)式接觸器。 當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)處于點動(dong)(dong)(dong)(dong)、需反向運轉(zhuan)及制(zhi)動(dong)(dong)(dong)(dong)時，接通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)為(wei)6Ie，使(shi)(shi)用(yong)(yong)類(lei)別(bie)為(wei)AC-4，它比(bi)AC-3嚴酷的(de)(de)多。可(ke)根(gen)據使(shi)(shi)用(yong)(yong)類(lei)別(bie)AC-4下列出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)大(da)(da)小(xiao)計算(suan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)機(ji)(ji)的(de)(de)功率(lv)。

接(jie)觸(chu)(chu)器(qi)在運(yun)行(xing)中(zhong)常(chang)見的(de)(de)(de)故(gu)障有以下(xia)幾種：1、線(xian)(xian)(xian)圈(quan)(quan)(quan)燒(shao)毀(hui)(hui)(hui)(hui)或者損(sun)壞(huai)(huai)2、觸(chu)(chu)頭(tou)融焊3、運(yun)行(xing)中(zhong)噪音較(jiao)大4、線(xian)(xian)(xian)圈(quan)(quan)(quan)通電(dian)(dian)(dian)(dian)(dian)后(hou)接(jie)觸(chu)(chu)器(qi)主觸(chu)(chu)頭(tou)不(bu)吸合(he)5、線(xian)(xian)(xian)圈(quan)(quan)(quan)斷電(dian)(dian)(dian)(dian)(dian)后(hou)接(jie)觸(chu)(chu)器(qi)主觸(chu)(chu)頭(tou)分(fen)斷。具體原因分(fen)析(xi)如下(xia)：1.線(xian)(xian)(xian)圈(quan)(quan)(quan)燒(shao)毀(hui)(hui)(hui)(hui)或者損(sun)壞(huai)(huai)。這(zhe)類故(gu)障出現的(de)(de)(de)頻(pin)次(ci)比(bi)較(jiao)高。主要是由(you)于線(xian)(xian)(xian)圈(quan)(quan)(quan)兩(liang)(liang)端的(de)(de)(de)供電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓(ya)不(bu)正確的(de)(de)(de)導(dao)(dao)致(zhi)(zhi)的(de)(de)(de)。當線(xian)(xian)(xian)圈(quan)(quan)(quan)兩(liang)(liang)端控(kong)制電(dian)(dian)(dian)(dian)(dian)壓(ya)偏(pian)(pian)低，當電(dian)(dian)(dian)(dian)(dian)壓(ya)低到一定程度，鐵芯就(jiu)不(bu)能(neng)(neng)吸合(he)，此時(shi)線(xian)(xian)(xian)圈(quan)(quan)(quan)中(zhong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)流是正常(chang)維持電(dian)(dian)(dian)(dian)(dian)流的(de)(de)(de)幾倍 甚(shen)至幾十倍，時(shi)間長了，線(xian)(xian)(xian)圈(quan)(quan)(quan)就(jiu)會(hui)(hui)因過(guo)度發熱而損(sun)毀(hui)(hui)(hui)(hui)！當線(xian)(xian)(xian)圈(quan)(quan)(quan)供電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)壓(ya)正常(chang)，但(dan)是線(xian)(xian)(xian)圈(quan)(quan)(quan)控(kong)制線(xian)(xian)(xian)過(guo)長，由(you)于線(xian)(xian)(xian)路壓(ya)降的(de)(de)(de)影響，導(dao)(dao)致(zhi)(zhi)實際(ji)接(jie)觸(chu)(chu)器(qi)線(xian)(xian)(xian)圈(quan)(quan)(quan)兩(liang)(liang)端的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)偏(pian)(pian)低，時(shi)間長了也會(hui)(hui)導(dao)(dao)致(zhi)(zhi)線(xian)(xian)(xian)圈(quan)(quan)(quan)過(guo)熱而損(sun)壞(huai)(huai)。線(xian)(xian)(xian)圈(quan)(quan)(quan)接(jie)線(xian)(xian)(xian)端子上(shang)的(de)(de)(de)控(kong)制電(dian)(dian)(dian)(dian)(dian)壓(ya)偏(pian)(pian)高（大于1.1Us）導(dao)(dao)致(zhi)(zhi)線(xian)(xian)(xian)圈(quan)(quan)(quan)過(guo)熱而燒(shao)毀(hui)(hui)(hui)(hui)。比(bi)如將380V電(dian)(dian)(dian)(dian)(dian)壓(ya)施加于220V線(xian)(xian)(xian)圈(quan)(quan)(quan)，大約15分(fen)鐘(zhong)左(zuo)右線(xian)(xian)(xian)圈(quan)(quan)(quan)就(jiu)會(hui)(hui)燒(shao)壞(huai)(huai)，電(dian)(dian)(dian)(dian)(dian)壓(ya)越(yue)高，線(xian)(xian)(xian)圈(quan)(quan)(quan)燒(shao)壞(huai)(huai)所(suo)需時(shi)間越(yue)短。還有一些物理器(qi)件(jian)上(shang)的(de)(de)(de)原因，在線(xian)(xian)(xian)圈(quan)(quan)(quan)制造，運(yun)輸和安(an)裝過(guo)程中(zhong)，碰(peng)撞(zhuang)或者產品跌落造成漆包線(xian)(xian)(xian)與接(jie)線(xian)(xian)(xian)端子連接(jie)處(chu)機(ji)械損(sun)傷(shang)，工作一段時(shi)間后(hou)損(sun)傷(shang)處(chu)燒(shao)斷。真(zhen)空接(jie)觸(chu)(chu)器(qi)具備(bei)較(jiao)低的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)弧(hu)(hu)電(dian)(dian)(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)(dian)(dian)弧(hu)(hu)能(neng)(neng)量，減少對(dui)電(dian)(dian)(dian)(dian)(dian)氣設備(bei)的(de)(de)(de)損(sun)壞(huai)(huai)。

按有無觸點(dian)分，可分為有觸點(dian)接(jie)(jie)(jie)觸器(qi)和無觸點(dian)接(jie)(jie)(jie)觸器(qi)。常見的(de)(de)(de)接(jie)(jie)(jie)觸器(qi)多為有觸點(dian)接(jie)(jie)(jie)觸器(qi)，而(er)無觸點(dian)接(jie)(jie)(jie)觸器(qi)屬于電(dian)(dian)(dian)子技(ji)術應用(yong)的(de)(de)(de)產物，一(yi)般(ban)采用(yong)晶閘管作為回路的(de)(de)(de)通(tong)(tong)斷(duan)元件。由于可控硅導通(tong)(tong)時所需的(de)(de)(de)觸發電(dian)(dian)(dian)壓很小，而(er)且回路通(tong)(tong)斷(duan)時無火花(hua)產生(sheng)，因而(er)可用(yong)于高(gao)操(cao)作頻率(lv)的(de)(de)(de)設備和易(yi)燃、易(yi)爆、無噪聲(sheng)的(de)(de)(de)場合。一(yi)般(ban)選接(jie)(jie)(jie)觸器(qi)容量如是(shi)阻(zu)性負載，按接(jie)(jie)(jie)觸器(qi)容量的(de)(de)(de)百(bai)分之八十(shi)算。如是(shi)電(dian)(dian)(dian)機之類(lei)的(de)(de)(de)感(gan)性負載 接(jie)(jie)(jie)觸器(qi)的(de)(de)(de)額定(ding)電(dian)(dian)(dian)流(liu)(liu)應是(shi)電(dian)(dian)(dian)機電(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)1.5到2倍(bei)，再大一(yi)點(dian)更好。真空接(jie)(jie)(jie)觸器(qi)的(de)(de)(de)靈敏(min)度高(gao)，能夠檢測(ce)到微弱的(de)(de)(de)電(dian)(dian)(dian)流(liu)(liu)和電(dian)(dian)(dian)壓變(bian)化(hua)。成都低壓真空接(jie)(jie)(jie)觸器(qi)價錢

真空接觸器的絕緣(yuan)材料(liao)具有(you)良好的耐高溫性能，適用于高溫工作環境(jing)。成(cheng)都(dou)低壓真空接觸器價錢

在(zai)煤礦井下(xia)掘進(jin)(jin)(jin)機(ji)施(shi)工的(de)實際工作當中，為(wei)(wei)了(le)盡量避免掘進(jin)(jin)(jin)機(ji)電(dian)(dian)控系(xi)(xi)統的(de)故障(zhang)(zhang)，就要通(tong)過(guo)實踐不(bu)斷摸(mo)索和探討理(li)(li)論積(ji)累(lei)經驗，以(yi)(yi)便能(neng)夠掌(zhang)握(wo)一套更(geng)好、更(geng)快的(de)處理(li)(li)掘進(jin)(jin)(jin)機(ji)電(dian)(dian)控系(xi)(xi)統故障(zhang)(zhang)的(de)技術方(fang)法，這樣(yang)也(ye)能(neng)夠節約修復時間，保證掘進(jin)(jin)(jin)機(ji)能(neng)夠正常運行。一般來(lai)說，掘進(jin)(jin)(jin)機(ji)電(dian)(dian)控系(xi)(xi)統主要集(ji)中在(zai)隔離(li)開關、PLC控制(zhi)器(qi)、控制(zhi)變壓(ya)器(qi)、外置油泵電(dian)(dian)機(ji)、截割部(bu)(bu)電(dian)(dian)機(ji)、照(zhao)(zhao)明(ming)漏(lou)電(dian)(dian)保護單元等(deng)地點出現(xian)故障(zhang)(zhang)。但是(shi)(shi)，這些部(bu)(bu)位出現(xian)的(de)問(wen)題(ti)還(huan)不(bu)能(neng)在(zai)現(xian)場解決，因為(wei)(wei)像PLC控制(zhi)器(qi)、控制(zhi)變壓(ya)器(qi)、照(zhao)(zhao)明(ming)漏(lou)電(dian)(dian)保護單元，都(dou)(dou)是(shi)(shi)電(dian)(dian)子模(mo)塊高度集(ji)成控制(zhi)的(de)，其(qi)模(mo)塊、電(dian)(dian)容、電(dian)(dian)阻的(de)損(sun)壞(huai)，井下(xia)規定是(shi)(shi)不(bu)準帶電(dian)(dian)檢修、維(wei)護和焊接(jie)的(de)，所(suo)以(yi)(yi)只能(neng)更(geng)換損(sun)壞(huai)的(de)部(bu)(bu)件(jian)。像電(dian)(dian)機(ji)的(de)一般故障(zhang)(zhang)短(duan)路、漏(lou)電(dian)(dian)、斷相等(deng)，都(dou)(dou)是(shi)(shi)內部(bu)(bu)繞組的(de)問(wen)題(ti)，此也(ye)只能(neng)是(shi)(shi)更(geng)換處理(li)(li)。而唯有真空接(jie)觸器(qi)的(de)故障(zhang)(zhang)是(shi)(shi)可以(yi)(yi)通(tong)過(guo)人員現(xian)場處理(li)(li)來(lai)解決的(de)，也(ye)是(shi)(shi)所(suo)有掘進(jin)(jin)(jin)機(ji)所(suo)共(gong)用的(de)部(bu)(bu)件(jian)。成都(dou)(dou)低壓(ya)真空接(jie)觸器(qi)價錢

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