電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)是一種用(yong)于(yu)(yu)保(bao)(bao)護(hu)電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)設(she)備(bei)，其主(zhu)(zhu)要功能是監(jian)測電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)工作狀態(tai)，并在(zai)(zai)出現過(guo)載、短路、過(guo)熱等(deng)故障時及時切斷電(dian)(dian)源，以(yi)防(fang)止(zhi)電(dian)(dian)動(dong)機(ji)(ji)(ji)損壞。電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)廣泛(fan)(fan)應用(yong)于(yu)(yu)各種工業(ye)(ye)(ye)領域，如電(dian)(dian)力(li)、冶金、礦(kuang)山(shan)、化(hua)工、建材等(deng)行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)。在(zai)(zai)電(dian)(dian)力(li)行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)中(zhong)，電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)主(zhu)(zhu)要用(yong)于(yu)(yu)對(dui)發電(dian)(dian)機(ji)(ji)(ji)、電(dian)(dian)動(dong)機(ji)(ji)(ji)、變壓器(qi)(qi)(qi)等(deng)設(she)備(bei)進(jin)行(xing)(xing)(xing)(xing)保(bao)(bao)護(hu)；在(zai)(zai)冶金行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)中(zhong)，電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)主(zhu)(zhu)要用(yong)于(yu)(yu)對(dui)煉(lian)鐵爐(lu)、軋鋼機(ji)(ji)(ji)、起(qi)重(zhong)機(ji)(ji)(ji)等(deng)設(she)備(bei)進(jin)行(xing)(xing)(xing)(xing)保(bao)(bao)護(hu)；在(zai)(zai)礦(kuang)山(shan)行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)中(zhong)，電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)主(zhu)(zhu)要用(yong)于(yu)(yu)對(dui)礦(kuang)井提(ti)升機(ji)(ji)(ji)、掘進(jin)機(ji)(ji)(ji)、通風(feng)機(ji)(ji)(ji)等(deng)設(she)備(bei)進(jin)行(xing)(xing)(xing)(xing)保(bao)(bao)護(hu)；在(zai)(zai)化(hua)工行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)中(zhong)，電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)主(zhu)(zhu)要用(yong)于(yu)(yu)對(dui)反(fan)應釜、攪(jiao)拌機(ji)(ji)(ji)、輸送泵等(deng)設(she)備(bei)進(jin)行(xing)(xing)(xing)(xing)保(bao)(bao)護(hu)；在(zai)(zai)建材行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)中(zhong)，電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)主(zhu)(zhu)要用(yong)于(yu)(yu)對(dui)水(shui)泥磨、制(zhi)磚機(ji)(ji)(ji)、攪(jiao)拌站等(deng)設(she)備(bei)進(jin)行(xing)(xing)(xing)(xing)保(bao)(bao)護(hu)。總的(de)(de)來說，電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)的(de)(de)應用(yong)范圍非常廣泛(fan)(fan)，幾乎涵蓋(gai)了所(suo)有需要使用(yong)電(dian)(dian)動(dong)機(ji)(ji)(ji)的(de)(de)行(xing)(xing)(xing)(xing)業(ye)(ye)(ye)和(he)領域。由(you)于(yu)(yu)電(dian)(dian)動(dong)機(ji)(ji)(ji)是現代(dai)工業(ye)(ye)(ye)生產中(zhong)的(de)(de)重(zhong)要動(dong)力(li)源，因此(ci)電(dian)(dian)機(ji)(ji)(ji)保(bao)(bao)護(hu)器(qi)(qi)(qi)的(de)(de)重(zhong)要性不言而喻。

電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)是一種用(yong)于保(bao)(bao)護(hu)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機的(de)(de)(de)設(she)備，其主要功(gong)能(neng)是監測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機的(de)(de)(de)工(gong)作(zuo)狀(zhuang)態，并在出現過(guo)載、短路(lu)(lu)、過(guo)熱等(deng)故(gu)(gu)障(zhang)時(shi)自動(dong)(dong)(dong)切斷電(dian)(dian)(dian)(dian)(dian)源(yuan)，以(yi)(yi)防止電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機損壞。電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)通常(chang)(chang)由主電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)、控(kong)制電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)和(he)信號(hao)顯示部分組成。主電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)包(bao)括交(jiao)流(liu)接觸器(qi)(qi)(qi)(qi)、熔斷器(qi)(qi)(qi)(qi)和(he)熱繼(ji)電(dian)(dian)(dian)(dian)(dian)器(qi)(qi)(qi)(qi)等(deng)元器(qi)(qi)(qi)(qi)件(jian)；控(kong)制電(dian)(dian)(dian)(dian)(dian)路(lu)(lu)則是電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)的(de)(de)(de)部分，它通過(guo)檢(jian)測(ce)(ce)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機的(de)(de)(de)各種參數，如電(dian)(dian)(dian)(dian)(dian)流(liu)、電(dian)(dian)(dian)(dian)(dian)壓、頻率、溫(wen)度(du)等(deng)，并與預設(she)的(de)(de)(de)閾值(zhi)進(jin)行比較，從而判斷電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機是否正常(chang)(chang)工(gong)作(zuo)或是否存(cun)在故(gu)(gu)障(zhang)。電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)的(de)(de)(de)型號(hao)和(he)參數根據(ju)(ju)不同(tong)的(de)(de)(de)使用(yong)環境(jing)和(he)需(xu)求有(you)(you)所不同(tong)。常(chang)(chang)見的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)型號(hao)有(you)(you)DZ20、DZ47、CM1等(deng)，這些型號(hao)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)有(you)(you)不同(tong)的(de)(de)(de)額定(ding)電(dian)(dian)(dian)(dian)(dian)壓、電(dian)(dian)(dian)(dian)(dian)流(liu)、保(bao)(bao)護(hu)功(gong)能(neng)等(deng)參數。總的(de)(de)(de)來說，電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)的(de)(de)(de)選擇應該根據(ju)(ju)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機的(de)(de)(de)具體(ti)參數和(he)工(gong)作(zuo)環境(jing)來確(que)定(ding)，以(yi)(yi)確(que)保(bao)(bao)電(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)機的(de)(de)(de)安全運行。同(tong)時(shi)，電(dian)(dian)(dian)(dian)(dian)機保(bao)(bao)護(hu)器(qi)(qi)(qi)(qi)也需(xu)要定(ding)期檢(jian)查和(he)維護(hu)，以(yi)(yi)確(que)保(bao)(bao)其正常(chang)(chang)工(gong)作(zuo)。

電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)是一種用(yong)于(yu)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的設備，它可(ke)(ke)以(yi)(yi)監(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的運(yun)行狀態，并(bing)(bing)在(zai)發生故(gu)障時(shi)(shi)(shi)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)斷(duan)開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，避免電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)損(sun)(sun)(sun)壞(huai)(huai)(huai)和(he)人員傷亡。以(yi)(yi)下(xia)是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)的應用(yong)場(chang)景(jing)介紹：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)過載保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)過載時(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)會增(zeng)(zeng)大，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)可(ke)(ke)以(yi)(yi)監(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的變化(hua)，并(bing)(bing)在(zai)過載時(shi)(shi)(shi)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)斷(duan)開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，頭(tou)燈(deng)SOCK86TDA工作原理闡述，保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)不(bu)受(shou)損(sun)(sun)(sun)壞(huai)(huai)(huai)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)短路保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)短路時(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)會瞬間增(zeng)(zeng)大，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)可(ke)(ke)以(yi)(yi)監(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的變化(hua)，并(bing)(bing)在(zai)短路時(shi)(shi)(shi)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)斷(duan)開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)不(bu)受(shou)損(sun)(sun)(sun)壞(huai)(huai)(huai)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)過熱保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)過熱時(shi)(shi)(shi)，會導致(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)溫度(du)(du)升高(gao)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)可(ke)(ke)以(yi)(yi)監(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的溫度(du)(du)，并(bing)(bing)在(zai)過熱時(shi)(shi)(shi)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)斷(duan)開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)不(bu)受(shou)損(sun)(sun)(sun)壞(huai)(huai)(huai)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)接(jie)地(di)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)接(jie)地(di)時(shi)(shi)(shi)，會導致(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓降低，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)可(ke)(ke)以(yi)(yi)監(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓，并(bing)(bing)在(zai)接(jie)地(di)時(shi)(shi)(shi)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)斷(duan)開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)不(bu)受(shou)損(sun)(sun)(sun)壞(huai)(huai)(huai)。電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)啟動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)：電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)啟動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時(shi)(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)會瞬間增(zeng)(zeng)大，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)可(ke)(ke)以(yi)(yi)監(jian)測(ce)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的變化(hua)，并(bing)(bing)在(zai)啟動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時(shi)(shi)(shi)自(zi)(zi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)斷(duan)開(kai)(kai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)，保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)不(bu)受(shou)損(sun)(sun)(sun)壞(huai)(huai)(huai)。總(zong)之，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)器(qi)(qi)可(ke)(ke)以(yi)(yi)應用(yong)于(yu)各種電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)場(chang)景(jing)，可(ke)(ke)以(yi)(yi)有效地(di)保(bao)(bao)(bao)(bao)護(hu)(hu)(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)不(bu)受(shou)損(sun)(sun)(sun)壞(huai)(huai)(huai)，提高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)(ji)的使用(yong)壽命和(he)安全性。