真(zhen)(zhen)空接(jie)觸(chu)器以真(zhen)(zhen)空為滅弧介質，其主觸(chu)點(dian)密封在(zai)的(de)真(zhen)(zhen)空滅弧管(guan)內。當操作線圈通電時(shi)，銜(xian)鐵吸(xi)合，在(zai)觸(chu)點(dian)彈(dan)簧(huang)和真(zhen)(zhen)空管(guan)自閉(bi)(bi)力(li)(li)的(de)作用下觸(chu)點(dian)閉(bi)(bi)合;操作線圈斷電時(shi)，反力(li)(li)彈(dan)簧(huang)克(ke)服(fu)真(zhen)(zhen)空管(guan)自閉(bi)(bi)力(li)(li)使(shi)銜(xian)鐵釋放，觸(chu)點(dian)斷開。接(jie)觸(chu)器分斷電流時(shi)，觸(chu)點(dian)間隙中會形(xing)成由金屬蒸氣形(xing)成的(de)鉑垢，影響接(jie)觸(chu)器的(de)使(shi)用壽命。

交流接觸器選型

交流接觸器的選用(yong)，應根據負荷的類型和工作參數合理選用(yong)。具體(ti)分(fen)為以下步驟(zou)：

1.選擇接(jie)觸器的類型

交(jiao)流(liu)接(jie)觸器(qi)按負荷種類(lei)(lei)一(yi)(yi)般分為(wei)一(yi)(yi)類(lei)(lei)、二類(lei)(lei)、三類(lei)(lei)和(he)四(si)類(lei)(lei)，分別記為(wei)AC1 、AC2 、AC3和(he)AC4 。一(yi)(yi)類(lei)(lei)交(jiao)流(liu)接(jie)觸器(qi)對應的控制對象是(shi)無(wu)感或微感負荷，如白(bai)熾燈(deng)、電阻爐等;二類(lei)(lei)交(jiao)流(liu)接(jie)觸器(qi)用于繞線式異(yi)步(bu)(bu)電動機的起(qi)動和(he)停止;三類(lei)(lei)交(jiao)流(liu)接(jie)觸器(qi)的典型用途是(shi)鼠籠型異(yi)步(bu)(bu)電動機的運(yun)轉(zhuan)和(he)運(yun)行中分斷;四(si)類(lei)(lei)交(jiao)流(liu)接(jie)觸器(qi)用于籠型異(yi)步(bu)(bu)電動機的起(qi)動、反接(jie)制動、反轉(zhuan)和(he)點動。

長(chang)城電(dian)器(qi)(qi)回(hui)(hui)收(shou)公司(si)上門回(hui)(hui)收(shou)各種(zhong)型(xing)號高低壓(ya)電(dian)容(rong)器(qi)(qi)，自愈式電(dian)容(rong)器(qi)(qi)，蓄電(dian)池(chi)，鎘鎳電(dian)瓶，電(dian)抗器(qi)(qi)，ME斷路(lu)器(qi)(qi)，智能閘，互感(gan)器(qi)(qi)，放點線圈，接(jie)觸器(qi)(qi)，空氣開關，電(dian)線電(dian)纜(lan)等庫(ku)存物資。以(yi)誠為本，信譽至上。回(hui)(hui)收(shou)，沒極限。歡(huan)迎來電(dian)洽談(tan)。

接(jie)觸(chu)(chu)(chu)器線(xian)(xian)圈(quan)(quan)中通(tong)過交(jiao)流(liu)電(dian)(dian)后，會產生(sheng)相應感(gan)抗，感(gan)抗的(de)大(da)(da)小(xiao)影響線(xian)(xian)圈(quan)(quan)中電(dian)(dian)流(liu)的(de)大(da)(da)小(xiao)，交(jiao)流(liu)電(dian)(dian)磁鐵(tie)中線(xian)(xian)圈(quan)(quan)的(de)感(gan)抗，在(zai)鐵(tie)芯未閉合時(shi)(shi)感(gan)抗很小(xiao)，會通(tong)過很大(da)(da)的(de)電(dian)(dian)流(liu)，這也是造(zao)成(cheng)線(xian)(xian)圈(quan)(quan)在(zai)吸(xi)(xi)合時(shi)(shi)功率為(wei)大(da)(da)的(de)原(yuan)因所在(zai)。當(dang)交(jiao)流(liu)接(jie)觸(chu)(chu)(chu)器由吸(xi)(xi)合轉(zhuan)為(wei)吸(xi)(xi)持時(shi)(shi)，由于(yu)處于(yu)長期工(gong)作(zuo)狀態再加(jia)之線(xian)(xian)圈(quan)(quan)功耗大(da)(da)，溫(wen)升也隨之上(shang)升。通(tong)常交(jiao)流(liu)接(jie)觸(chu)(chu)(chu)器長時(shi)(shi)間(jian)工(gong)作(zuo)可以(yi)產生(sheng)50℃～60℃度高溫(wen)，夏(xia)季時(shi)(shi)再加(jia)上(shang)30℃～40℃度環境溫(wen)度，線(xian)(xian)圈(quan)(quan)溫(wen)度上(shang)升更(geng)快(kuai)。線(xian)(xian)圈(quan)(quan)長期處于(yu)高溫(wen)工(gong)作(zuo)中，將加(jia)快(kuai)老化甚至燒毀(hui)，交(jiao)流(liu)接(jie)觸(chu)(chu)(chu)器的(de)使(shi)用壽命(ming)也會縮(suo)短。

根據交(jiao)(jiao)流(liu)接(jie)觸(chu)器(qi)線(xian)(xian)圈功(gong)耗(hao)大溫(wen)升(sheng)(sheng)快的(de)(de)特點，通過降低(di)功(gong)耗(hao)和溫(wen)升(sheng)(sheng)以達到節能目(mu)的(de)(de)。按內部結構，節電(dian)(dian)線(xian)(xian)圈分(fen)為：雙繞(rao)組式、限(xian)流(liu)電(dian)(dian)阻(zu)(zu)式、雙繞(rao)組自轉換(huan)式和定位轉換(huan)式。節電(dian)(dian)線(xian)(xian)圈的(de)(de)工(gong)作(zuo)原理通常將在其線(xian)(xian)圈上采用脈動直(zhi)流(liu)吸(xi)(xi)(xi)(xi)持(chi)(chi)運行(xing)方案：吸(xi)(xi)(xi)(xi)合繞(rao)組一般線(xian)(xian)徑(jing)較(jiao)(jiao)(jiao)(jiao)大，匝數(shu)較(jiao)(jiao)(jiao)(jiao)少，因(yin)而阻(zu)(zu)抗較(jiao)(jiao)(jiao)(jiao)低(di)，產(chan)生的(de)(de)吸(xi)(xi)(xi)(xi)合電(dian)(dian)流(liu)大;吸(xi)(xi)(xi)(xi)持(chi)(chi)繞(rao)組一般線(xian)(xian)徑(jing)較(jiao)(jiao)(jiao)(jiao)小，匝數(shu)較(jiao)(jiao)(jiao)(jiao)多，阻(zu)(zu)抗大，故(gu)而吸(xi)(xi)(xi)(xi)持(chi)(chi)電(dian)(dian)流(liu)小。增加(jia)相應整流(liu)器(qi)件(jian)及壓敏(min)電(dian)(dian)阻(zu)(zu)和薄(bo)膜電(dian)(dian)容(rong)，使交(jiao)(jiao)流(liu)接(jie)觸(chu)器(qi)通電(dian)(dian)工(gong)作(zuo)處(chu)于直(zhi)流(liu)狀(zhuang)態(tai)，較(jiao)(jiao)(jiao)(jiao)大的(de)(de)起(qi)動電(dian)(dian)流(liu)保證電(dian)(dian)磁系(xi)統(tong)的(de)(de)可(ke)靠(kao)吸(xi)(xi)(xi)(xi)合，較(jiao)(jiao)(jiao)(jiao)小的(de)(de)吸(xi)(xi)(xi)(xi)持(chi)(chi)電(dian)(dian)流(liu)降低(di)了吸(xi)(xi)(xi)(xi)持(chi)(chi)功(gong)耗(hao)，從而降低(di)了電(dian)(dian)磁系(xi)統(tong)的(de)(de)電(dian)(dian)損耗(hao)和線(xian)(xian)圈溫(wen)升(sheng)(sheng)。

長城電(dian)(dian)器(qi)回收公司上門(men)回收各(ge)種(zhong)型號(hao)高低壓(ya)電(dian)(dian)容器(qi)，自(zi)愈式(shi)電(dian)(dian)容器(qi)，蓄(xu)電(dian)(dian)池，鎘鎳電(dian)(dian)瓶，電(dian)(dian)抗器(qi)，ME斷路器(qi)，智能閘，互感器(qi)，放點線(xian)圈(quan)，接(jie)觸器(qi)，空氣開關(guan)，電(dian)(dian)線(xian)電(dian)(dian)纜(lan)等(deng)庫存物(wu)資。以誠(cheng)為本(ben)，信(xin)譽至上。回收，沒極限(xian)。歡迎來電(dian)(dian)洽(qia)談。

交流接(jie)觸器的基本參數

（1）額(e)(e)定(ding)(ding)電(dian)(dian)(dian)壓(ya) 指(zhi)主(zhu)觸(chu)點額(e)(e)定(ding)(ding)工作(zuo)電(dian)(dian)(dian)壓(ya)，應等于負載的(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)壓(ya)。一只接觸(chu)器常規定(ding)(ding)幾個(ge)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)壓(ya)，同(tong)時列出相應的(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)流或控(kong)制功率。通(tong)常，工作(zuo)電(dian)(dian)(dian)壓(ya)即為額(e)(e)定(ding)(ding)電(dian)(dian)(dian)壓(ya)。常用的(de)(de)額(e)(e)定(ding)(ding)電(dian)(dian)(dian)壓(ya)值為220V、380V、660V等。

（2）額定(ding)電(dian)(dian)流 接觸器觸點(dian)在(zai)額定(ding)工作條件(jian)下的電(dian)(dian)流值。380V三相電(dian)(dian)動機控(kong)制電(dian)(dian)路(lu)中，額定(ding)工作電(dian)(dian)流可近(jin)似等(deng)于控(kong)制功率的兩倍。常用額定(ding)電(dian)(dian)流等(deng)級為(wei)5A、10A、20A、40A、60A、100A、150A、250A、400A、600A。

（3）通(tong)斷(duan)能力(li) 可(ke)分為接通(tong)電(dian)(dian)流(liu)(liu)和分斷(duan)電(dian)(dian)流(liu)(liu)。接通(tong)電(dian)(dian)流(liu)(liu)是指觸(chu)點閉(bi)合時不會造成觸(chu)點熔焊時的電(dian)(dian)流(liu)(liu)值(zhi)；分斷(duan)電(dian)(dian)流(liu)(liu)是指觸(chu)點斷(duan)開時能可(ke)靠滅弧的電(dian)(dian)流(liu)(liu)。一般(ban)通(tong)斷(duan)能力(li)是額定電(dian)(dian)流(liu)(liu)的5～10倍。當然，這一數值(zhi)與開斷(duan)電(dian)(dian)路的電(dian)(dian)壓等級有關，電(dian)(dian)壓越高(gao)，通(tong)斷(duan)能力(li)越小。

長城電器回收公司上門回收各種型號高低壓電容器，自愈式電容器，蓄電池，鎘鎳電瓶，電抗器，ME斷路器，智能閘，互感器，放點線圈，接觸器，空氣開關，電線電纜等庫存物資。以誠為本，信譽至上。回收，沒極限。歡迎來電洽談。