【交(jiao)流(liu)(liu)(liu)繼(ji)電(dian)器】交(jiao)流(liu)(liu)(liu)繼(ji)電(dian)器原理 交(jiao)流(liu)(liu)(liu)繼(ji)電(dian)器能在直流(liu)(liu)(liu)下用嗎 交(jiao)流(liu)(liu)(liu)繼(ji)電(dian)器特點

交流電磁繼電器的工作原理和直流電(dian)(dian)(dian)(dian)磁繼電(dian)(dian)(dian)(dian)器基本相同，交流電(dian)(dian)(dian)(dian)磁繼電(dian)(dian)(dian)(dian)器工作在交流電(dian)(dian)(dian)(dian)路中，當交流電(dian)(dian)(dian)(dian)流通(tong)過(guo)線圈時，在鐵(tie)芯中產生交變磁通(tong)，由于牽引力（電(dian)(dian)(dian)(dian)磁吸(xi)力）是和磁通(tong)φ的平方成正比，所以當電(dian)(dian)(dian)(dian)流改變方向(xiang)時，牽引力并不改變方向(xiang)，永遠朝一(yi)個方向(xiang)將銜鐵(tie)吸(xi)向(xiang)鐵(tie)芯。

但是由于交(jiao)變的電流(liu)在(zai)鐵芯中產(chan)生交(jiao)變的磁(ci)通，所以交(jiao)流(liu)電磁(ci)繼(ji)電器(qi)在(zai)特(te)性和結構上有它特(te)殊的地方。

一、交流繼電器的原理是什么？

它(ta)由磁(ci)路部分(fen)、接觸(chu)(chu)部分(fen)組成，其中磁(ci)路部分(fen)由鐵(tie)芯(xin)、銜鐵(tie)、軛鐵(tie)、短路環、線圈(quan)和(he)拉簧等組成，特(te)征(zheng)是線圈(quan)與軛鐵(tie)之(zhi)間(jian)安裝有套在鐵(tie)芯(xin)上的側板，且側板與鐵(tie)芯(xin)、軛鐵(tie)接觸(chu)(chu)良(liang)好。本(ben)實用新型(xing)由于(yu)在原(yuan)有繼(ji)電器的基礎(chu)上增加一只純銅制成的側板，側板就(jiu)可以對(dui)(dui)電磁(ci)系統中的漏(lou)磁(ci)進行短路，減少了(le)(le)渦流損耗，大幅降低了(le)(le)繼(ji)電器線圈(quan)過負載時的交流尾聲(sheng)，減少了(le)(le)繼(ji)電器對(dui)(dui)其它(ta)電子(zi)設備的干擾，提高了(le)(le)觸(chu)(chu)點的接觸(chu)(chu)可靠性。

該圖片由注冊用戶"橘子de殿堂"提供，版權聲明反饋

二、交流繼電器的結構

交流繼電(dian)器的線圈較(jiao)(jiao)短(duan)，而且(qie)線徑較(jiao)(jiao)粗(cu)，主(zhu)要是因為線圈通以(yi)(yi)(yi)交流電(dian)后，電(dian)抗較(jiao)(jiao)大，線徑粗(cu)可以(yi)(yi)(yi)減(jian)小內阻，減(jian)少發熱量，另外(wai)由于交流電(dian)過零時(shi)會造成線圈電(dian)磁力(li)減(jian)少，吸合不牢，產生(sheng)振動現象(xiang)，所以(yi)(yi)(yi)在磁鐵吸合面的部分(fen)加短(duan)路環，在磁場發生(sheng)變(bian)(bian)化(hua)時(shi)，在短(duan)路環時(shi)形成渦流，進(jin)而形成與磁場變(bian)(bian)化(hua)方向相反的電(dian)磁力(li)，滯(zhi)后磁場變(bian)(bian)化(hua)，使(shi)電(dian)磁鐵可以(yi)(yi)(yi)較(jiao)(jiao)好吸合。

三、交流繼電器的特點

1、由于交(jiao)流(liu)電(dian)(dian)磁繼(ji)電(dian)(dian)器(qi)通入的(de)(de)(de)電(dian)(dian)流(liu)是變化(hua)(hua)的(de)(de)(de)交(jiao)流(liu)電(dian)(dian)，使其(qi)磁路中(zhong)的(de)(de)(de)磁通也隨著交(jiao)替變化(hua)(hua)（正(zheng)弦(xian)規律(lv)(lv)而不是直線規律(lv)(lv)）。銜鐵所受的(de)(de)(de)吸力(li)(li)是在0與最大(da)值之間變化(hua)(hua)的(de)(de)(de)，因(yin)此(ci)交(jiao)流(liu)電(dian)(dian)磁繼(ji)電(dian)(dian)器(qi)的(de)(de)(de)吸力(li)(li)是脈動(dong)(dong)(dong)的(de)(de)(de)，變化(hua)(hua)頻率(lv)是交(jiao)流(liu)頻率(lv)的(de)(de)(de)兩倍，這種脈動(dong)(dong)(dong)的(de)(de)(de)吸力(li)(li)將使銜鐵發生顫動(dong)(dong)(dong)，因(yin)此(ci)在結構(gou)上要采取措施來(lai)消除顫動(dong)(dong)(dong)，影響(xiang)繼(ji)電(dian)(dian)器(qi)的(de)(de)(de)壽命。

2、由于交(jiao)(jiao)流電(dian)源通過鐵(tie)芯(xin)時，產(chan)(chan)生交(jiao)(jiao)變的(de)磁(ci)通，使鐵(tie)芯(xin)中產(chan)(chan)生渦(wo)流，而渦(wo)流產(chan)(chan)生的(de)磁(ci)場與原磁(ci)通方向相反，使一(yi)部分磁(ci)通變成(cheng)漏磁(ci)通而損失(shi)(shi)掉，造(zao)成(cheng)磁(ci)損失(shi)(shi)，為(wei)了減小(xiao)這(zhe)些損失(shi)(shi)，交(jiao)(jiao)流電(dian)磁(ci)繼電(dian)器的(de)鐵(tie)芯(xin)一(yi)般(ban)采用硅鋼片(pian)疊成(cheng)為(wei)減少磁(ci)損和渦(wo)流損失(shi)(shi)，交(jiao)(jiao)流電(dian)磁(ci)繼電(dian)器的(de)鐵(tie)芯(xin)采用硅鋼片(pian)疊成(cheng)。

3、另外，直(zhi)流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)只有在接通(tong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源或切斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源瞬間(jian)有反電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)勢(shi)存在，穩(wen)定(ding)狀(zhuang)態(tai)下(xia)，通(tong)過線(xian)圈(quan)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)只由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)決(jue)定(ding)，而交流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)，即使是在穩(wen)定(ding)的(de)情(qing)況下(xia)，也存在著反電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)勢(shi)，因(yin)此交流(liu)(liu)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)主要不是由電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)決(jue)定(ding)，而是由線(xian)圈(quan)的(de)感(gan)抗來(lai)決(jue)定(ding)，這就(jiu)說明在計算交流(liu)(liu)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路時(shi)，必須考慮線(xian)圈(quan)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)感(gan)交流(liu)(liu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁(ci)繼(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)線(xian)圈(quan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)由線(xian)圈(quan)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)抗（感(gan)抗）決(jue)定(ding)。

四、交流繼電器能在直流下用嗎？

交(jiao)流固態繼(ji)電器在直(zhi)流電上是不能應(ying)用的。真是沒必要去嘗試，因為交(jiao)流繼(ji)電器的參(can)數均比直(zhi)流繼(ji)電器的參(can)數大，不是一(yi)個領域(yu)上的應(ying)運，直(zhi)流電無法引起交(jiao)流繼(ji)電器的各操作(zuo)性能。

五、直流繼電器和交流繼電器的區別是什么？

直(zhi)(zhi)流(liu)(liu)(liu)繼電(dian)(dian)器(qi)和(he)交流(liu)(liu)(liu)繼電(dian)(dian)器(qi)的工作原理(li)一(yi)樣都是根據(ju)電(dian)(dian)磁原理(li)沒(mei)有區別，但直(zhi)(zhi)流(liu)(liu)(liu)繼電(dian)(dian)器(qi)的電(dian)(dian)源必(bi)須是直(zhi)(zhi)流(liu)(liu)(liu)電(dian)(dian)，交流(liu)(liu)(liu)繼電(dian)(dian)器(qi)的電(dian)(dian)源必(bi)須是交流(liu)(liu)(liu)電(dian)(dian)源。直(zhi)(zhi)流(liu)(liu)(liu)繼電(dian)(dian)器(qi)線(xian)圈(quan)的直(zhi)(zhi)流(liu)(liu)(liu)電(dian)(dian)阻很大，線(xian)圈(quan)電(dian)(dian)流(liu)(liu)(liu)大小等于電(dian)(dian)壓(ya)除以線(xian)圈(quan)的直(zhi)(zhi)流(liu)(liu)(liu)電(dian)(dian)阻，所(suo)以線(xian)圈(quan)導(dao)線(xian)細而且匝數很多(duo)。

交流繼電器線(xian)圈(quan)(quan)匝數相應(ying)較少，因為交流(liu)(liu)(liu)電路里(li)限制電流(liu)(liu)(liu)除了線(xian)圈(quan)(quan)電阻(zu)以外限制電流(liu)(liu)(liu)大(da)(da)小主(zhu)要是線(xian)圈(quan)(quan)感抗，感抗xl的大(da)(da)小與(yu)交流(liu)(liu)(liu)電的頻率成(cheng)正比，如(ru)果將交流(liu)(liu)(liu)繼電器接在直流(liu)(liu)(liu)電路里(li)由(you)于直流(liu)(liu)(liu)電的頻率等于零所(suo)(suo)以感抗XL=0，而線(xian)圈(quan)(quan)的內阻(zu)又很小所(suo)(suo)以線(xian)圈(quan)(quan)會(hui)發熱而燒毀。相反直流(liu)(liu)(liu)繼電器接到交流(liu)(liu)(liu)電源時會(hui)因線(xian)圈(quan)(quan)的內阻(zu)很大(da)(da)和出現(xian)很大(da)(da)感抗會(hui)造成(cheng)線(xian)圈(quan)(quan)吸合不(bu)上，所(suo)(suo)以不(bu)能互換。