【汽(qi)車(che)繼(ji)(ji)電(dian)器(qi)】汽(qi)車(che)繼(ji)(ji)電(dian)器(qi)工作(zuo)原理(li) 汽(qi)車(che)繼(ji)(ji)電(dian)器(qi)的維護保(bao)養方法(fa)
汽車繼(ji)電器(qi)的(de)工作(zuo)原理 汽車繼(ji)電器(qi)的(de)維護保養方法(fa)
一、汽車繼電器的工作原理
當電磁繼電器線(xian)圈兩(liang)端加上一定(ding)的(de)(de)電(dian)(dian)壓或(huo)電(dian)(dian)流(liu),線(xian)圈產生的(de)(de)磁通通過鐵心(xin)、軛鐵、銜鐵、磁路工(gong)作(zuo)氣隙組成的(de)(de)磁路,在磁場的(de)(de)作(zuo)用下,銜鐵吸向鐵心(xin)極面,從而推動(dong)觸(chu)點(dian)(dian)常閉(bi)觸(chu)點(dian)(dian)斷開(kai)(kai),常開(kai)(kai)觸(chu)點(dian)(dian)閉(bi)合(he);當(dang)線(xian)圈兩(liang)端電(dian)(dian)壓或(huo)電(dian)(dian)流(liu)小于(yu)一定(ding)值(zhi)時,機械反力(li)大于(yu)電(dian)(dian)磁吸力(li)時,銜鐵回 到初始狀態,常開(kai)(kai)觸(chu)點(dian)(dian)斷開(kai)(kai),常閉(bi)觸(chu)點(dian)(dian)接通。
那么,可以把汽車繼電(dian)器(qi)看成是由線圈工(gong)作(zuo)的(de)(de)(de)控(kong)制(zhi)電(dian)路和觸點(dian)(dian)工(gong)作(zuo)的(de)(de)(de)主電(dian)路兩個部分(fen)組成的(de)(de)(de)集合體。在繼電(dian)器(qi)的(de)(de)(de)控(kong)制(zhi)電(dian)路中,只(zhi)有較(jiao)小的(de)(de)(de)工(gong)作(zuo)電(dian)流,這是由于操縱(zong)開(kai)關(guan)的(de)(de)(de)觸點(dian)(dian)容量較(jiao)小,不(bu)能用(yong)來(lai)直接(jie)控(kong)制(zhi)用(yong)電(dian)量較(jiao)大的(de)(de)(de)負荷,只(zhi)能通(tong)過繼電(dian)器(qi)的(de)(de)(de)觸點(dian)(dian)來(lai)控(kong)制(zhi)它的(de)(de)(de)通(tong)斷。
繼(ji)電器(qi)既是(shi)一種控(kong)(kong)制開關(guan),又是(shi)控(kong)(kong)制對象(執(zhi)行器(qi))。以(yi)燃(ran)油泵(beng)繼(ji)電器(qi)為例,它是(shi)燃(ran)油泵(beng)的控(kong)(kong)制開關(guan),但是(shi)燃(ran)油泵(beng)繼(ji)電器(qi)的線(xian)圈只有在(zai)電控(kong)(kong)單(dan)元中驅動三極(ji)管(guan)導通時(shi),才能通過電控(kong)(kong)單(dan)元的接地點形成回路。
二、汽車繼電器的組成部分
汽車(che)繼電(dian)器由(you)磁路系統、接觸(chu)系統和復原(yuan)機構組(zu)成(cheng)(cheng)。 磁路系統由(you)鐵(tie)心(xin)、軛鐵(tie)、銜鐵(tie)、線圈(quan)等零(ling)件(jian)組(zu)成(cheng)(cheng)。 接觸(chu)系統由(you)靜簧(huang)(huang)片(pian)、動簧(huang)(huang)片(pian)、觸(chu)點底座等零(ling)件(jian)組(zu)成(cheng)(cheng)。 復原(yuan)機構由(you)復原(yuan)簧(huang)(huang)片(pian)或拉(la)簧(huang)(huang)組(zu)成(cheng)(cheng)。
三、汽車繼電器的安裝方法
1、安(an)裝方(fang)(fang)(fang)向(xiang)(xiang)(xiang) 安(an)裝方(fang)(fang)(fang)向(xiang)(xiang)(xiang)如果和(he)繼(ji)電(dian)器(qi)耐沖(chong)擊的(de)(de)(de)方(fang)(fang)(fang)向(xiang)(xiang)(xiang)一致,可充分發(fa)揮繼(ji)電(dian)器(qi)的(de)(de)(de)性能。建議(yi)使(shi)沖(chong)擊方(fang)(fang)(fang)向(xiang)(xiang)(xiang)垂 直于(yu)觸(chu)點(dian)(dian)和(he)銜(xian)鐵的(de)(de)(de)運動方(fang)(fang)(fang)向(xiang)(xiang)(xiang),則可有效(xiao)改善非勵磁狀態下(xia)的(de)(de)(de)常閉觸(chu)點(dian)(dian)的(de)(de)(de)耐振耐沖(chong)擊性能。安(an)裝時,使(shi)繼(ji)電(dian)器(qi)的(de)(de)(de)觸(chu)點(dian)(dian)軸向(xiang)(xiang)(xiang)與地面平行,可以避免觸(chu)點(dian)(dian)飛濺物、炭化(hua)物落在觸(chu)點(dian)(dian)表面, 提(ti)高接觸(chu)可靠性。多組(zu)繼(ji)電(dian)器(qi)應避免小負(fu)載(zai)觸(chu)點(dian)(dian)位于(yu)大負(fu)載(zai)觸(chu)點(dian)(dian)下(xia)方(fang)(fang)(fang)。
2、近(jin)距離安(an)(an)(an)裝(zhuang)(zhuang) 近(jin)距離安(an)(an)(an)裝(zhuang)(zhuang)多(duo)個繼電(dian)(dian)器(qi)時,會導致異常發(fa)熱(re),一(yi)般推薦為(wei)2mm間距。近(jin)距離安(an)(an)(an)裝(zhuang)(zhuang)有極(ji)性或磁 保持繼電(dian)(dian)器(qi)會影響動作電(dian)(dian)壓。
3、外殼(ke)安(an)裝繼電器,不能取下(xia)外殼(ke)先安(an)裝、為(wei)防(fang)止松(song)動、破損、變(bian)形,請(qing)使用彈(dan)簧墊圈(quan)。擰緊力矩請(qing)在(zai)0.5~70N·m 范圍內。
4、插入式(shi)繼電器插入強(qiang)度建議為40~70N。
5、滿足同(tong)(tong)樣負載(zai)要求的產品具(ju)有(you)不同(tong)(tong)的外形尺(chi)寸,根據所允許的安裝空間,可(ke)選(xuan)用低高度或小(xiao)安裝面積的產品。
6、汽車繼(ji)電(dian)器(qi)的(de)(de)安(an)(an)裝(zhuang)(zhuang)方(fang)式(shi)(shi)有PCB板(ban)式(shi)(shi)、ISO插座安(an)(an)裝(zhuang)(zhuang)式(shi)(shi)、ISO 280插座安(an)(an)裝(zhuang)(zhuang)式(shi)(shi)和外殼(ke)固定、卡(ka) 裝(zhuang)(zhuang)安(an)(an)裝(zhuang)(zhuang)方(fang)式(shi)(shi)。對(dui)體積(ji)小、不經(jing)常更換(huan)的(de)(de)繼(ji)電(dian)器(qi),一般(ban)選(xuan)用(yong)PCB板(ban)式(shi)(shi),對(dui)經(jing)常更換(huan)的(de)(de)繼(ji)電(dian)器(qi),選(xuan)用(yong)插座安(an)(an)裝(zhuang)(zhuang)方(fang)式(shi)(shi)。對(dui)主回路(lu)電(dian)流超過20A的(de)(de)繼(ji)電(dian)器(qi),一般(ban)選(xuan)用(yong)插座快速(su)連接(jie)式(shi)(shi),防止大(da) 電(dian)流通過線路(lu)板(ban),造成線路(lu)板(ban)發熱損壞(huai)(短期工作繼(ji)電(dian)器(qi)除外)。對(dui)體積(ji)大(da)的(de)(de)繼(ji)電(dian)器(qi),可 選(xuan)用(yong)外殼(ke)安(an)(an)裝(zhuang)(zhuang)式(shi)(shi),防止在(zai)沖擊、振動條件下(xia),安(an)(an)裝(zhuang)(zhuang)腳損壞(huai)。
四、汽車繼電器的維護保養
焊接工藝
1、涂焊劑
PCB 板式非塑封繼電(dian)器(qi)極易(yi)受焊(han)劑(ji)的(de)污染,建議使用抗焊(han)劑(ji)式或塑封式繼電(dian)器(qi)以防止(zhi)(zhi)焊(han)劑(ji)氣 體從引(yin)出(chu)端和底座(zuo)與(yu)外殼的(de)間隙侵入(ru),抗焊(han)劑(ji)式繼電(dian)器(qi)如采用預熱(re)烘干(100℃ 1 分鐘) ,則可進 一(yi)步防止(zhi)(zhi)焊(han)劑(ji)侵入(ru)。
2、焊接工藝
當(dang)使(shi)用(yong)涂焊(han)劑(ji)或自動焊(han)接(jie)時,應小心,不要破(po)壞繼電器(qi)(qi)性能,抗焊(han)劑(ji)式繼電器(qi)(qi)或塑封式繼電 器(qi)(qi)可適(shi)用(yong)于浸焊(han)或波峰焊(han)工(gong)藝,但最大焊(han)接(jie)溫度和時間應隨所選(xuan)繼電器(qi)(qi)的不同加以控制(zhi)。
1、波峰焊(han)(han): 推薦的(de)焊(han)(han)接(jie)溫度(du)是(shi):240℃~260℃,時間(jian)約5秒,最佳焊(han)(han)接(jie)溫度(du)為250℃。 關(guan)于其(qi)它(ta)的(de)焊(han)(han)接(jie)溫度(du)和焊(han)(han)接(jie)時間(jian)(如較高的(de)焊(han)(han)料(liao)溫度(du)就相(xiang)應地縮短沾錫(xi)時間(jian)),請與我們的(de) 技術服務支持聯系或確(que)認焊(han)(han)接(jie)質(zhi)量。
2、手工焊(han): 推薦焊(han)接(jie)溫(wen)度為(wei)300℃-350℃,焊(han)接(jie)時間(jian)控制在2秒以內。
3、冷卻: 由于焊錫工(gong)序(xu)引(yin)起的繼電(dian)器(qi)發熱可以通過在工(gong)序(xu)最后進(jin)行(xing)冷卻得(de)到緩解(jie),所以不要突然改(gai) 變溫度,尤(you)其要避免對熱繼電(dian)器(qi)進(jin)行(xing)冷沖擊。
清洗工藝
應(ying)盡可能(neng)使用(yong)免(mian)(mian)清洗(xi)助焊劑(ji)進(jin)行(xing)焊接,應(ying)避免(mian)(mian)對繼(ji)(ji)電(dian)器(qi)(qi)進(jin)行(xing)整體(ti)清洗(xi)。防止清洗(xi)劑(ji)進(jin)入繼(ji)(ji)電(dian)器(qi)(qi)導致失效。禁止使用(yong)超聲(sheng)清洗(xi),以免(mian)(mian)超聲(sheng)波(bo)能(neng)量產生(sheng)觸點冷焊、漆包線(xian)斷線(xian)及(ji)其他(ta)結構損(sun)壞。在清洗(xi)和干燥后,應(ying)立即(ji)進(jin)行(xing)通(tong)風處理,使繼(ji)(ji)電(dian)器(qi)(qi)降至室溫。
涂保全劑:
有時為保(bao)證線(xian)路板(ban)的耐(nai)潮、高絕緣,須對線(xian)路板(ban)進行涂(tu)保(bao)全(quan)劑(ji)處理,應(ying)選用不含(han)硅的較柔軟 的膠,涂(tu)膠工藝應(ying)避免繼電器產生(sheng)負壓而吸入保(bao)全(quan)劑(ji)。
檢修方法
(1)繼電(dian)器工作性能的簡便判斷方法
接通點火開關,然后用(yong)耳(er)朵或聽(ting)(ting)診器傾聽(ting)(ting)控制繼電(dian)器內有無吸合(he)聲(sheng),或者用(yong)手感受一下繼電(dian)器有沒有振動感,如有,說(shuo)明繼電(dian)器工作基本正常(chang),用(yong)電(dian)器不(bu)工作是(shi)由其(qi)他原因引起的;否則,說(shuo)明該繼電(dian)器工作失(shi)常(chang)。
也可(ke)以拔下繼(ji)電(dian)(dian)器(qi)(qi)(qi)進(jin)行試驗,例如(ru)發生空(kong)調(diao)壓縮(suo)機(ji)(ji)(ji)不工作的(de)(de)(de)故(gu)障,可(ke)以啟動(dong)發動(dong)機(ji)(ji)(ji),然后接通鼓風機(ji)(ji)(ji)開(kai)關和空(kong)調(diao)開(kai)關。再拔下空(kong)調(diao)壓縮(suo)機(ji)(ji)(ji)繼(ji)電(dian)(dian)器(qi)(qi)(qi)的(de)(de)(de)插接器(qi)(qi)(qi)進(jin)行判(pan)斷。如(ru)果能(neng)夠聽到(dao)該(gai)繼(ji)電(dian)(dian)器(qi)(qi)(qi)動(dong)作的(de)(de)(de)聲音,而且(qie)拔下繼(ji)電(dian)(dian)器(qi)(qi)(qi)時(shi)發動(dong)機(ji)(ji)(ji)的(de)(de)(de)轉速明顯下降,插入(ru)該(gai)繼(ji)電(dian)(dian)器(qi)(qi)(qi)時(shi)發動(dong)機(ji)(ji)(ji)的(de)(de)(de)轉速又(you)提(ti)升,說(shuo)明空(kong)調(diao)壓縮(suo)機(ji)(ji)(ji)的(de)(de)(de)繼(ji)電(dian)(dian)器(qi)(qi)(qi)及(ji)其(qi)控制線路是(shi)正常(chang)的(de)(de)(de)。
關于(yu)繼(ji)電器所(suo)處的位置,凡是在(zai)電路原(yuan)理圖上標有點劃線的繼(ji)電器及保(bao)險器,一(yi)般(ban)布置在(zai)中央配(pei)電盒內。
(2)繼電(dian)器的常見放障 繼電(dian)器的常見故障現象有:線圈燒斷、匝間短路(絕(jue)緣老化)、觸點燒蝕、熱衰變以及無法(fa)調整初始動作電(dian)流等。
①繼電(dian)(dian)(dian)器線圈燒壞。為了防止這種情況(kuang)發生,在進行維(wei)修(xiu)、保(bao)養及電(dian)(dian)(dian)焊時,如果溫度可能超過80℃,應當拆(chai)下對溫度比較敏感的繼電(dian)(dian)(dian)器和(he)電(dian)(dian)(dian)控(kong)單元。
②觸(chu)(chu)點燒蝕(shi)。例(li)如金(jin)杯海獅轎車(采用491Q—ME發動機)空調冷凝(ning)器(qi)風扇的繼電(dian)器(qi),它正好(hao)處(chu)在玻(bo)璃清洗(xi)噴水管的下(xia)方(fang),若該(gai)噴水管破裂,清洗(xi)液將泄漏到繼電(dian)器(qi)上,使繼電(dian)器(qi)的常(chang)開觸(chu)(chu)點銹蝕(shi)而(er)不能斷(duan)開,會導致空調冷凝(ning)器(qi)風扇常(chang)轉不停的故障。因此,應(ying)當嚴防繼電(dian)器(qi)進水。
(3)設法(fa)減少繼電器觸點的(de)接(jie)觸電阻
車用繼電器(qi)觸(chu)(chu)(chu)點(dian)(dian)間存(cun)在(zai)(zai)的(de)(de)接(jie)(jie)(jie)觸(chu)(chu)(chu)電阻,主要由收縮電阻和表面膜電阻兩部分構(gou)成。觸(chu)(chu)(chu)點(dian)(dian)的(de)(de)接(jie)(jie)(jie)觸(chu)(chu)(chu)電阻與觸(chu)(chu)(chu)點(dian)(dian)的(de)(de)接(jie)(jie)(jie)觸(chu)(chu)(chu)形式(shi)、材料性能及表面加工等因素有關。由此(ci)可見,要減少繼電器(qi)觸(chu)(chu)(chu)點(dian)(dian)的(de)(de)接(jie)(jie)(jie)觸(chu)(chu)(chu)電阻,在(zai)(zai)接(jie)(jie)(jie)觸(chu)(chu)(chu)壓力一定的(de)(de)情況下,可以(yi)通過改善接(jie)(jie)(jie)觸(chu)(chu)(chu)狀態和改進接(jie)(jie)(jie)觸(chu)(chu)(chu)材料入手(shou)。
(4)ECU搭(da)(da)(da)鐵(tie)不(bu)良(liang)可能(neng)影(ying)響(xiang)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)正(zheng)(zheng)常(chang)工作(zuo) 一輛神(shen)龍富康988轎車,在正(zheng)(zheng)常(chang)行(xing)駛(shi)中(zhong),發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)自動(dong)(dong)(dong)(dong)(dong)熄火(huo),再次(ci)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong),無法著車。接通點(dian)(dian)火(huo)開(kai)關,聽(ting)不(bu)到燃油泵運轉的(de)(de)聲(sheng)音(yin),也(ye)沒(mei)有(you)(you)高壓(ya)(ya)火(huo)。檢(jian)測(ce)點(dian)(dian)火(huo)線圈,發(fa)(fa)現插頭(tou)上沒(mei)有(you)(you)電(dian)(dian)(dian)(dian)(dian)(dian)源,但(dan)(dan)是(shi)(shi)一次(ci)側(ce)和二(er)次(ci)側(ce)的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)都正(zheng)(zheng)常(chang)。測(ce)量該車的(de)(de)噴(pen)(pen)射(she)雙密(mi)封(feng)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi),其(qi)插頭(tou)有(you)(you)12V電(dian)(dian)(dian)(dian)(dian)(dian)源。更換噴(pen)(pen)射(she)雙密(mi)封(feng)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi),還是(shi)(shi)沒(mei)有(you)(you)高壓(ya)(ya)火(huo),也(ye)沒(mei)有(you)(you)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)吸(xi)合(he)的(de)(de)聲(sheng)音(yin)。用(yong)一根(gen)(gen)導線將(jiang)噴(pen)(pen)射(she)雙密(mi)封(feng)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)的(de)(de)10號(hao)腳直接搭(da)(da)(da)鐵(tie),能(neng)聽(ting)到繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)吸(xi)合(he)的(de)(de)聲(sheng)音(yin),發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)也(ye)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)成(cheng)功了(le)。但(dan)(dan)是(shi)(shi)奇怪的(de)(de)是(shi)(shi),拆開(kai)這(zhe)根(gen)(gen)搭(da)(da)(da)鐵(tie)線,發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)不(bu)熄火(huo),而且關閉(bi)點(dian)(dian)火(huo)開(kai)關,重新啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)后,正(zheng)(zheng)常(chang)了(le)。分析個中(zhong)原(yuan)因,這(zhe)是(shi)(shi)由于發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)ECU搭(da)(da)(da)鐵(tie)不(bu)良(liang),導致繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)線圈的(de)(de)供電(dian)(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)很低(有(you)(you)時只(zhi)有(you)(you)2V左右),根(gen)(gen)本不(bu)可能(neng)使繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)吸(xi)合(he)。用(yong)導線直接搭(da)(da)(da)鐵(tie)后,繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)有(you)(you)了(le)12V電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya),于是(shi)(shi)順(shun)利吸(xi)合(he),所以發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)成(cheng)功。去掉那根(gen)(gen)臨(lin)時搭(da)(da)(da)鐵(tie)線后(點(dian)(dian)火(huo)開(kai)關仍(reng)處(chu)在接通狀態),繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)上仍(reng)然有(you)(you)較低的(de)(de)保持(chi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(這(zhe)是(shi)(shi)繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)共有(you)(you)的(de)(de)特性(xing)),這(zhe)種保持(chi)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)即使只(zhi)有(you)(you)2V,繼(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)器(qi)(qi)也(ye)不(bu)會斷開(kai),所以發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)不(bu)熄火(huo)。關閉(bi)點(dian)(dian)火(huo)開(kai)關,電(dian)(dian)(dian)(dian)(dian)(dian)路產生的(de)(de)自感電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)勢(shi)大(da)大(da)高于電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya),在這(zhe)種強大(da)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)勢(shi)的(de)(de)作(zuo)用(yong)下,接觸不(bu)良(liang)的(de)(de)搭(da)(da)(da)鐵(tie)處(chu)可能(neng)恢(hui)復正(zheng)(zheng)常(chang),所以發(fa)(fa)動(dong)(dong)(dong)(dong)(dong)機(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)后正(zheng)(zheng)常(chang)了(le)。但(dan)(dan)是(shi)(shi)上述故障還會再現,所以根(gen)(gen)除(chu)的(de)(de)辦法是(shi)(shi)將(jiang)搭(da)(da)(da)鐵(tie)不(bu)良(liang)的(de)(de)部位徹底處(chu)理好.
儲存環境
避免日光直射并保持常溫·常濕·常壓; 溫度:10℃~35℃ 濕度:5~85%RH 氣壓:86~106kPa
在高溫(wen)(wen)、高濕(shi)環境(jing)(jing)下,環境(jing)(jing)溫(wen)(wen)度急劇變化時(shi),繼電器內部可能會結露(lu)。特別是用船只(zhi)進行海上運輸時(shi)尤其(qi)容易產生結露(lu),請注意運輸環境(jing)(jing)。結露(lu)是:高溫(wen)(wen)、高濕(shi)環境(jing)(jing)下溫(wen)(wen) 度由高溫(wen)(wen)訊速(su)變為低溫(wen)(wen)或訊速(su)由低溫(wen)(wen)變為高溫(wen)(wen)高濕(shi)環境(jing)(jing)時(shi),水蒸氣(qi)凝縮變成水滴的現 象。結露(lu)會導致絕緣下降、線(xian)圈腐蝕斷線(xian)、銹蝕等(deng)。
低溫結冰(bing)(bing):結露(lu)和高(gao)濕環(huan)境(jing)中,在水分(fen)附著于(yu)繼電(dian)器的狀態下(xia)(xia),溫度降至冰(bing)(bing)點以下(xia)(xia)時水分(fen)結冰(bing)(bing)的現象(xiang)。結冰(bing)(bing)可能會導致可動部(bu)分(fen)的粘合、動作延遲或冰(bing)(bing)塊介于(yu)觸點之間, 使觸點產生故障(zhang)。
低溫·低濕環境中,塑料可能會脆化。
長期(qi)貯存(cun)于高溫、高濕和含有(you)機(ji)氣(qi)體、硫化氣(qi)體環境中時,觸點(dian)表(biao)面(mian)將生成(cheng)硫化膜(mo)(mo)和氧化膜(mo)(mo),導(dao)致(zhi)接觸不穩定和觸點(dian)故障。請注意包裝形態,盡量減小濕度(du)、有(you)機(ji)氣(qi)體、 硫化氣(qi)體等的影響。
繼電(dian)器應在潔(jie)凈的環境中存儲和安裝,請在存在粉塵污(wu)染環境下使用防塵罩或(huo)塑封繼 電(dian)器。
應注意監測存儲溫度,盡(jin)量避免繼(ji)電(dian)器存儲時間(jian)過長。
儲存、運(yun)輸應力 運(yun)輸過程中,若(ruo)對(dui)繼電器(qi)施加了較大跌落沖(chong)擊(ji),可能會導致功能障礙(ai),請注(zhu)(zhu)意(yi)包裝(zhuang)器(qi) 材外觀(guan)是否完整。 繼電器(qi)采用長型管包裝(zhuang),當繼電器(qi)數量較少(shao),如果缺少(shao)限位,會滑(hua)落而影響繼電器(qi)的外觀(guan)和特(te)性,要(yao)特(te)別注(zhu)(zhu)意(yi)。