接觸器(qi)選型方法簡(jian)介一(yi)

接觸器用以(yi)接通(tong)和分斷負載(zai)。它與(yu)熱過載(zai)繼電器組合，保護(hu)運行中的電氣(qi)設(she)備。它與(yu)繼電控(kong)制回路組合，遠控(kong)或聯鎖(suo)相關電氣(qi)設(she)備。

n ? ? 接觸品(pin)種(zhong)類

交流接觸器：主(zhu)回路接通和(he)分斷(duan)交流負載。控制線圈可以有交、直流。典型(xing)結(jie)(jie)(jie)構(gou)分為雙斷(duan)點(dian)直動(dong)式(shi)（LC1-D/F*）和(he)單(dan)(dan)斷(duan)點(dian)轉動(dong)式(shi)（LC1-B*）。前者(zhe)(zhe)結(jie)(jie)(jie)構(gou)緊湊(cou)、體積(ji)小、重量輕；后者(zhe)(zhe)維護方便、易于配置成單(dan)(dan)極、二級和(he)多(duo)極結(jie)(jie)(jie)構(gou)，但體積(ji)和(he)安裝面積(ji)大。

直(zhi)流(liu)(liu)接觸(chu)器(qi)(qi)：主(zhu)回路接通和分(fen)斷(duan)直(zhi)流(liu)(liu)負載。控制線圈可以有交(jiao)、直(zhi)流(liu)(liu)。其動(dong)作原理與交(jiao)流(liu)(liu)接觸(chu)器(qi)(qi)相似，但(dan)直(zhi)流(liu)(liu)分(fen)斷(duan)時感性(xing)負載存(cun)儲的磁(ci)場能(neng)量瞬時釋放，斷(duan)點處產生高(gao)能(neng)電(dian)弧，因此要求直(zhi)流(liu)(liu)接觸(chu)器(qi)(qi)具有較好的滅弧功能(neng)。中/大容量直(zhi)流(liu)(liu)接觸(chu)器(qi)(qi)常(chang)采用單斷(duan)點平(ping)面布置整(zheng)體(ti)結(jie)構，其特(te)點是分(fen)斷(duan)時電(dian)弧距(ju)離長(chang)，滅弧罩(zhao)內含滅弧柵。小容量直(zhi)流(liu)(liu)接觸(chu)器(qi)(qi)采用雙(shuang)斷(duan)點立(li)體(ti)布置結(jie)構。

長城電(dian)(dian)(dian)器(qi)(qi)(qi)(qi)(qi)(qi)回收(shou)公司上門回收(shou)各種型(xing)號高低壓電(dian)(dian)(dian)容(rong)器(qi)(qi)(qi)(qi)(qi)(qi)，自愈式電(dian)(dian)(dian)容(rong)器(qi)(qi)(qi)(qi)(qi)(qi)，蓄電(dian)(dian)(dian)池(chi)，鎘鎳(nie)電(dian)(dian)(dian)瓶(ping)，電(dian)(dian)(dian)抗器(qi)(qi)(qi)(qi)(qi)(qi)，ME斷(duan)路器(qi)(qi)(qi)(qi)(qi)(qi)，智能閘，互感器(qi)(qi)(qi)(qi)(qi)(qi)，放點線圈，接觸(chu)器(qi)(qi)(qi)(qi)(qi)(qi)，空氣開關，電(dian)(dian)(dian)線電(dian)(dian)(dian)纜等庫(ku)存物資。以誠(cheng)為本，信(xin)譽至上。回收(shou)，沒極限。歡(huan)迎來電(dian)(dian)(dian)洽談(tan)。

接(jie)(jie)觸(chu)(chu)器(qi)是(shi)重(zhong)要(yao)的(de)(de)(de)(de)(de)(de)低壓電器(qi)元件,其(qi)壽(shou)(shou)命(ming)(ming)的(de)(de)(de)(de)(de)(de)長短(duan)是(shi)質量評價和(he)主要(yao)指標之一,故(gu)采取一些措(cuo)施提(ti)高壽(shou)(shou)命(ming)(ming)很重(zhong)要(yao)。吸(xi)力(li)特(te)(te)性(xing)(xing)與(yu)反(fan)力(li)特(te)(te)性(xing)(xing)的(de)(de)(de)(de)(de)(de)合(he)理(li)配合(he)可以(yi)(yi)(yi)提(ti)高接(jie)(jie)觸(chu)(chu)器(qi)的(de)(de)(de)(de)(de)(de)壽(shou)(shou)命(ming)(ming)。接(jie)(jie)觸(chu)(chu)器(qi)的(de)(de)(de)(de)(de)(de)動(dong)作(zuo)電壓為(wei)85%~110%Un。觸(chu)(chu)頭(tou)(tou)閉合(he)和(he)鐵心(xin)(xin)吸(xi)合(he)時使觸(chu)(chu)頭(tou)(tou)產生(sheng)的(de)(de)(de)(de)(de)(de)一次(ci)(ci)和(he)二次(ci)(ci)跳(tiao)動(dong),可能(neng)導致觸(chu)(chu)頭(tou)(tou)熔焊及(ji)增(zeng)(zeng)大其(qi)電侵蝕(shi)。為(wei)了(le)(le)減小(xiao)觸(chu)(chu)頭(tou)(tou)跳(tiao)動(dong)時間,應適(shi)(shi)當減小(xiao)觸(chu)(chu)頭(tou)(tou)的(de)(de)(de)(de)(de)(de)質量和(he)運動(dong)速度,并適(shi)(shi)當增(zeng)(zeng)大觸(chu)(chu)頭(tou)(tou)初接(jie)(jie)觸(chu)(chu)力(li)。為(wei)了(le)(le)減小(xiao)和(he)防止觸(chu)(chu)頭(tou)(tou)的(de)(de)(de)(de)(de)(de)第二次(ci)(ci)彈跳(tiao)(此時因起動(dong)電流(liu)大,危害性(xing)(xing)更(geng)嚴重(zhong)),除(chu)借吸(xi)力(li)特(te)(te)性(xing)(xing)與(yu)反(fan)力(li)特(te)(te)性(xing)(xing)的(de)(de)(de)(de)(de)(de)良(liang)好配合(he)以(yi)(yi)(yi)減小(xiao)碰(peng)撞能(neng)量外,還需給(gei)電磁(ci)系統加(jia)裝緩沖裝置以(yi)(yi)(yi)吸(xi)收銜(xian)鐵等的(de)(de)(de)(de)(de)(de)動(dong)能(neng)。對于轉(zhuan)動(dong)式結構(gou),適(shi)(shi)當地改變銜(xian)鐵支(zhi)臂與(yu)觸(chu)(chu)頭(tou)(tou)支(zhi)臂間的(de)(de)(de)(de)(de)(de)杠桿比,可改變觸(chu)(chu)頭(tou)(tou)的(de)(de)(de)(de)(de)(de)接(jie)(jie)觸(chu)(chu)壓力(li)和(he)閉合(he)速度,從而改善觸(chu)(chu)頭(tou)(tou)的(de)(de)(de)(de)(de)(de)彈跳(tiao)情況。交流(liu)鐵心(xin)(xin)的(de)(de)(de)(de)(de)(de)分(fen)(fen)磁(ci)環(huan)在機械(xie)(xie)上是(shi)一個薄弱環(huan)節。當銜(xian)鐵與(yu)鐵心(xin)(xin)碰(peng)撞時,分(fen)(fen)磁(ci)環(huan)懸伸于鐵心(xin)(xin)外部分(fen)(fen)的(de)(de)(de)(de)(de)(de)根部及(ji)轉(zhuan)角處應力(li),常易斷裂。當前普(pu)遍采用(yong)的(de)(de)(de)(de)(de)(de)工藝是(shi)將分(fen)(fen)磁(ci)環(huan)緊嵌(qian)于靜鐵心(xin)(xin)磁(ci)部的(de)(de)(de)(de)(de)(de)槽(cao)內,并在其(qi)四周(zhou)以(yi)(yi)(yi)膠(jiao)粘(zhan)劑粘(zhan)牢,以(yi)(yi)(yi)增(zeng)(zeng)大機械(xie)(xie)強(qiang)度。為(wei)了(le)(le)提(ti)高接(jie)(jie)觸(chu)(chu)器(qi)的(de)(de)(de)(de)(de)(de)機械(xie)(xie)壽(shou)(shou)命(ming)(ming),還可適(shi)(shi)當增(zeng)(zeng)大極面面積,以(yi)(yi)(yi)減小(xiao)碰(peng)撞應力(li)。交流(liu)鐵心(xin)(xin)的(de)(de)(de)(de)(de)(de)極面和(he)直流(liu)鐵心(xin)(xin)的(de)(de)(de)(de)(de)(de)棱角部分(fen)(fen),還可通過(guo)硬化處理(li)以(yi)(yi)(yi)延長使用(yong)壽(shou)(shou)命(ming)(ming)。凡轉(zhuan)動(dong)部分(fen)(fen)合(he)理(li)地選用(yong)運動(dong)副,如采用(yong)摩擦系數(shu)小(xiao)而耐磨性(xing)(xing)強(qiang)的(de)(de)(de)(de)(de)(de)塑料(liao)-塑料(liao)或塑料(liao)-金屬構(gou)成運動(dong)副,或在熱(re)逆(ni)性(xing)(xing)塑料(liao)中添加(jia)少量的(de)(de)(de)(de)(de)(de)二硫化鉬(mu)或者石墨(mo)等,以(yi)(yi)(yi)制造軸承或導軌,對降低摩擦系數(shu)和(he)提(ti)高耐磨性(xing)(xing)能(neng),都(dou)很有效。

長城電(dian)器回(hui)(hui)收公司上門回(hui)(hui)收各(ge)種型號高低(di)壓(ya)電(dian)容器，自愈(yu)式電(dian)容器，蓄電(dian)池，鎘(ge)鎳電(dian)瓶(ping)，電(dian)抗(kang)器，ME斷(duan)路器，智能閘(zha)，互感器，放點線(xian)圈，接觸器，空氣開關(guan)，電(dian)線(xian)電(dian)纜等庫存物資(zi)。以誠為本，信(xin)譽至上。回(hui)(hui)收，沒極(ji)限(xian)。歡(huan)迎(ying)來電(dian)洽談(tan)。

接(jie)觸器(qi)就(jiu)(jiu)(jiu)是用弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)開(kai)(kai)(kai)關(guan)，由于(yu)大電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)通(tong)(tong)斷(duan)(duan)(duan)時會產(chan)生(sheng)(sheng)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)弧(hu)，如(ru)果直(zhi)接(jie)在(zai)強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)上(shang)接(jie)上(shang)普(pu)通(tong)(tong)開(kai)(kai)(kai)關(guan)，人(ren)直(zhi)接(jie)去開(kai)(kai)(kai)或(huo)關(guan)這個(ge)開(kai)(kai)(kai)關(guan)時會有危險，所以采用接(jie)觸器(qi)。其(qi)基(ji)本(ben)結構就(jiu)(jiu)(jiu)是一個(ge)產(chan)生(sheng)(sheng)磁性的(de)線圈加鐵(tie)芯，一個(ge)類似于(yu)普(pu)通(tong)(tong)開(kai)(kai)(kai)關(guan)的(de)主(zhu)開(kai)(kai)(kai)關(guan)，外加一些機械結構。工(gong)作原理就(jiu)(jiu)(jiu)是給線圈通(tong)(tong)上(shang)一個(ge)小的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，使鐵(tie)芯產(chan)生(sheng)(sheng)磁力(li)，吸(xi)著主(zhu)開(kai)(kai)(kai)關(guan)吸(xi)合(he)，從而將強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)閉(bi)合(he)，當停止給線圈供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)時，由于(yu)沒了吸(xi)力(li)，主(zhu)開(kai)(kai)(kai)關(guan)就(jiu)(jiu)(jiu)斷(duan)(duan)(duan)開(kai)(kai)(kai)，從而將強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)(lu)斷(duan)(duan)(duan)開(kai)(kai)(kai)。因此是弱電(dian)(dian)(dian)(dian)(dian)(dian)(dian)控制強電(dian)(dian)(dian)(dian)(dian)(dian)(dian)通(tong)(tong)斷(duan)(duan)(duan)，并可遠程控制

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。