⑴額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)壓(ya)Un它是規定(ding)(ding)(ding)條件(jian)下能保證電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)正常(chang)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)的(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya),它與(yu)產品的(de)(de)通斷(duan)能力關系(xi)很大。通常(chang),工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)壓(ya)即額(e)(e)定(ding)(ding)(ding)絕緣電(dian)(dian)(dian)(dian)(dian)壓(ya),并(bing)據(ju)此確(que)定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)電(dian)(dian)(dian)(dian)(dian)氣間(jian)(jian)(jian)隙和(he)(he)爬電(dian)(dian)(dian)(dian)(dian)距離。一臺接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)常(chang)規定(ding)(ding)(ding)數(shu)(shu)(shu)個額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)壓(ya),同時(shi)(shi)列出(chu)相(xiang)應(ying)的(de)(de)額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(或控制(zhi)(zhi)(zhi)功率(lv))。當額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)壓(ya)為(wei)380V時(shi)(shi),額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)可近似地認為(wei)等(deng)于額(e)(e)定(ding)(ding)(ding)控制(zhi)(zhi)(zhi)功率(lv)(KW)的(de)(de)二倍。根據(ju)我國(guo)的(de)(de)標(biao)準(zhun)(zhun),額(e)(e)定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)壓(ya)應(ying)在下述標(biao)準(zhun)(zhun)數(shu)(shu)(shu)系(xi)中選(xuan)取:直流(liu)(liu):12、24、36、48、60、72、110、125、220、250、440V;交(jiao)流(liu)(liu):24、36、42、48、127、220、380、660、1140V。⑵額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)In它是由電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)的(de)(de)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)條件(jian),如工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)壓(ya)、操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)頻(pin)率(lv)、使(shi)用(yong)類別(bie)(bie)、外(wai)殼防護(hu)形式、觸(chu)(chu)(chu)頭壽命(ming)等(deng)所決定(ding)(ding)(ding)的(de)(de)電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)值,它一般為(wei)6.3～3150A。⑶使(shi)用(yong)類別(bie)(bie)與(yu)通斷(duan)條件(jian)機械工(gong)(gong)(gong)(gong)業(ye)部(bu)標(biao)準(zhun)(zhun)JB2455-85《低壓(ya)接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)》,對(dui)低壓(ya)接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)使(shi)用(yong)類別(bie)(bie)及通斷(duan)能力有一定(ding)(ding)(ding)的(de)(de)要求。⑷壽命(ming)接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)壽命(ming)包括機械壽命(ming)和(he)(he)電(dian)(dian)(dian)(dian)(dian)壽命(ming)。接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)機械壽命(ming)以(yi)其在需(xu)(xu)要維修或更換機械零(ling)件(jian)前所能承受的(de)(de)無載(zai)操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)循環(huan)次(ci)(ci)數(shu)(shu)(shu)來表示(shi)。推薦的(de)(de)機械壽命(ming)操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)次(ci)(ci)數(shu)(shu)(shu)為(wei):0.001、0.003、0.01、0.03、0.1、0.3、0.6、1、3、10百萬次(ci)(ci)。接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)電(dian)(dian)(dian)(dian)(dian)壽命(ming)以(yi)在規定(ding)(ding)(ding)的(de)(de)使(shi)用(yong)條件(jian)下,無需(xu)(xu)修理或更換零(ling)件(jian)的(de)(de)負載(zai)操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)次(ci)(ci)數(shu)(shu)(shu)來表示(shi)。除非另有規定(ding)(ding)(ding),對(dui)于AC-3使(shi)用(yong)類別(bie)(bie)的(de)(de)電(dian)(dian)(dian)(dian)(dian)壽命(ming)次(ci)(ci)數(shu)(shu)(shu),應(ying)不(bu)少于相(xiang)應(ying)機械壽命(ming)的(de)(de)1/20,且產品技術(shu)條件(jian)應(ying)規定(ding)(ding)(ding)此標(biao)準(zhun)(zhun)。⑸操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)頻(pin)率(lv)和(he)(he)額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)頻(pin)率(lv)是指接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)每小時(shi)(shi)的(de)(de)允許操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)次(ci)(ci)數(shu)(shu)(shu),它分為(wei)九級(ji),即每小時(shi)(shi)操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)1、3、12、30、120、300、600、1200、3000次(ci)(ci)。操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)頻(pin)率(lv)直接(jie)(jie)影(ying)(ying)響到(dao)接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)電(dian)(dian)(dian)(dian)(dian)壽命(ming)和(he)(he)滅弧室的(de)(de)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)條件(jian),也將影(ying)(ying)響到(dao)交(jiao)流(liu)(liu)勵磁線圈的(de)(de)溫升。接(jie)(jie)觸(chu)(chu)(chu)器(qi)(qi)(qi)的(de)(de)額(e)(e)定(ding)(ding)(ding)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)有8小時(shi)(shi)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)、不(bu)間(jian)(jian)(jian)斷(duan)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)、短時(shi)(shi)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)及斷(duan)續周期工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)等(deng)四(si)(si)種。短時(shi)(shi)工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)的(de)(de)觸(chu)(chu)(chu)頭通電(dian)(dian)(dian)(dian)(dian)時(shi)(shi)間(jian)(jian)(jian)有10、30、60、90min四(si)(si)種。斷(duan)續周期工(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)制(zhi)(zhi)(zhi)由三個參數(shu)(shu)(shu)—通過電(dian)(dian)(dian)(dian)(dian)流(liu)(liu)值、操(cao)(cao)(cao)(cao)作(zuo)(zuo)(zuo)頻(pin)率(lv)和(he)(he)負載(zai)系(xi)數(shu)(shu)(shu)來說(shuo)明。負載(zai)系(xi)數(shu)(shu)(shu)也稱通電(dian)(dian)(dian)(dian)(dian)持續率(lv),它是通電(dian)(dian)(dian)(dian)(dian)時(shi)(shi)間(jian)(jian)(jian)與(yu)整個周期之比(bi),一般以(yi)百分數(shu)(shu)(shu)表示(shi)。其標(biao)準(zhun)(zhun)值有:15%、25%、40%、60%。

長城電(dian)(dian)器(qi)回(hui)收公司上(shang)門回(hui)收各種型號高(gao)低(di)壓電(dian)(dian)容(rong)(rong)器(qi)，自愈(yu)式電(dian)(dian)容(rong)(rong)器(qi)，蓄電(dian)(dian)池(chi)，鎘鎳電(dian)(dian)瓶(ping)，電(dian)(dian)抗器(qi)，ME斷路(lu)器(qi)，智能閘(zha)，互感器(qi)，放點線圈，接觸器(qi)，空(kong)氣開關(guan)，電(dian)(dian)線電(dian)(dian)纜等庫存物資(zi)。以誠為本，信譽至上(shang)。回(hui)收，沒極限。歡迎來電(dian)(dian)洽(qia)談。

由于(yu)交流勵磁(ci)電(dian)流每個(ge)周期(qi)有兩次(ci)過零(ling)點，它(ta)產(chan)生(sheng)的(de)(de)磁(ci)通(tong)和(he)(he)電(dian)磁(ci)吸力也有為零(ling)的(de)(de)時(shi)(shi)刻，而(er)銜鐵(tie)(tie)上(shang)所(suo)受釋放彈簧的(de)(de)反(fan)作(zuo)用(yong)力都(dou)是(shi)始終存在(zai)的(de)(de)。故(gu)在(zai)每一(yi)周期(qi)內總有一(yi)段時(shi)(shi)間電(dian)磁(ci)力將(jiang)小于(yu)反(fan)作(zuo)用(yong)力，致使銜鐵(tie)(tie)釋放，脫離(li)鐵(tie)(tie)心。然而(er)，銜鐵(tie)(tie)很快又因電(dian)磁(ci)吸力大(da)于(yu)反(fan)力而(er)被鐵(tie)(tie)心吸過去，這樣，就(jiu)產(chan)生(sheng)了(le)銜鐵(tie)(tie)的(de)(de)振動(dong)和(he)(he)噪聲(sheng)(sheng)。振動(dong)會(hui)使電(dian)磁(ci)鐵(tie)(tie)加(jia)速磨損和(he)(he)損壞，噪聲(sheng)(sheng)會(hui)污染環(huan)(huan)境，令操作(zuo)人員難以忍受。為消(xiao)除銜鐵(tie)(tie)振動(dong)，交流電(dian)磁(ci)鐵(tie)(tie)（三相的(de)(de)例外(wai)）的(de)(de)鐵(tie)(tie)心端(duan)面(mian)都(dou)嵌有一(yi)銅(tong)質分磁(ci)環(huan)(huan)（又稱短路環(huan)(huan)），如圖(tu)1-22所(suo)示，分磁(ci)環(huan)(huan)的(de)(de)作(zuo)用(yong)在(zai)于(yu)使環(huan)(huan)內和(he)(he)環(huan)(huan)外(wai)磁(ci)通(tong)產(chan)生(sheng)一(yi)個(ge)相位差，從而(er)兩個(ge)磁(ci)通(tong)產(chan)生(sheng)的(de)(de)電(dian)磁(ci)力的(de)(de)合力就(jiu)不(bu)會(hui)等于(yu)零(ling)，可以消(xiao)除銜鐵(tie)(tie)的(de)(de)振動(dong)和(he)(he)噪聲(sheng)(sheng)。

長城電(dian)(dian)器回收公司上門回收各種型(xing)號高低壓電(dian)(dian)容(rong)器，自愈式電(dian)(dian)容(rong)器，蓄電(dian)(dian)池，鎘鎳電(dian)(dian)瓶(ping)，電(dian)(dian)抗器，ME斷路器，智能(neng)閘，互(hu)感器，放點線圈，接觸器，空(kong)氣開關，電(dian)(dian)線電(dian)(dian)纜等庫存物(wu)資。以誠(cheng)為本，信譽至上。回收，沒極限。歡(huan)迎來電(dian)(dian)洽談。

為了更好地融入電力能源產業結構調整必須，在我國在原來GB8871-----1998《交流接觸器節電以及應用技術標準》基本上，對規范再次開展了修定，并施行GB8871---2001《交流接觸器》。在新標準中，對噪音及噪音實驗、節電率及節電率的測量、電磁兼容測試EMC及實驗條文都納入申請強制執行條文，這毫無疑問對交流接觸器節能環保的科學研究營銷推廣具有積極主動功效。傳統型與節電型接觸器比照狀況如表1所顯示。表1傳統型與節電型接觸器比照節電產品類別交流接觸器環保節能計劃方案關鍵在于其原理及相對的構造加工工藝。交流接觸器內造成磁感應吸附力Fat由穩定分量F0和交變分量F~構成。在其中：穩定分量：F0=Fatm/2(Fatm=107B2MS/8π)交變分量：F~=F0cos2ωt。