盛華電機作為一家擁有二十余年電機生產研發經驗的山東變頻電機廠家,在日常與客戶交流中,大家對電機絕緣短路故障問題比較好奇,今天山東盛華直流無刷電機產品就盤點電動機絕緣層短路故障率故障率。
以下是調(diao)頻電機馬達(da)加(jia)工廠盤(pan)點的(de)導致交(jiao)流電動機電絕緣過壓洛(luo)天依的(de)重要緣由(you)。
(1)定子調速(su)電(dian)(dian)機(ji)繞線吸濕(shi)發潮(chao)(chao)。針對(dui)于長(chang)年停(ting)掉或經較長(chang)時(shi)長(chang)點檢(jian)的帶(dai)發調速(su)電(dian)(dian)機(ji)、投身正常(chang)運(yun)轉前要檢(jian)測(ce)隔熱阻值,不(bu)和(he)睦(mu)格者不(bu)允許投身正常(chang)運(yun)轉。吸濕(shi)發潮(chao)(chao)帶(dai)發調速(su)電(dian)(dian)機(ji)要去真空干(gan)燥治(zhi)理 。
(2)電機定(ding)子任何弊病或維護(hu)保養生產(chan)方(fang)法不(bu)好,出現電機定(ding)子耐壓(ya)(ya)(ya)電壓(ya)(ya)(ya)擊穿或機誡傷害。應按(an)(an)明文規定(ding)的耐壓(ya)(ya)(ya)等級分類選耐壓(ya)(ya)(ya)村料,嵌裝電機定(ding)子及浸漆干熱等要苛刻按(an)(an)生產(chan)方(fang)法需求使用。
(3)同(tong)步電機定子過高。隔絕電阻(zu)過高還會(hui)使(shi)隔絕電阻(zu)性調低(di),一會(hui)兒在較高溫度下能較快導致隔絕電阻(zu)磨損。應切實(shi)加強基本的巡查查看,處理電站(zhan)機各口收發生過高而(er)磨損同(tong)步電機定子隔絕電阻(zu)。
(4)絕(jue)緣性(xing)(xing)(xing)帶(dai)電(dian)(dian)(dian)(dian)阻(zu)(zu)性(xing)(xing)(xing)電(dian)(dian)(dian)(dian)阻(zu)(zu)退(tui)化(hua)。基本上風(feng)能發三相電(dian)(dian)(dian)(dian)動機(ji)運作15~20年超過,其繞(rao)阻(zu)(zu)絕(jue)緣性(xing)(xing)(xing)帶(dai)電(dian)(dian)(dian)(dian)阻(zu)(zu)性(xing)(xing)(xing)電(dian)(dian)(dian)(dian)阻(zu)(zu)退(tui)化(hua),電(dian)(dian)(dian)(dian)氣(qi)成(cheng)套耐腐蝕(shi)性(xing)(xing)(xing)變現(xian),還會使(shi)(shi)絕(jue)緣性(xing)(xing)(xing)帶(dai)電(dian)(dian)(dian)(dian)阻(zu)(zu)性(xing)(xing)(xing)電(dian)(dian)(dian)(dian)阻(zu)(zu)熱(re)擊穿(chuan)。要(yao)干好風(feng)能發三相電(dian)(dian)(dian)(dian)動機(ji)的維護保養及(ji)預防措(cuo)施性(xing)(xing)(xing)實驗室檢(jian)測,若表明絕(jue)緣性(xing)(xing)(xing)帶(dai)電(dian)(dian)(dian)(dian)阻(zu)(zu)性(xing)(xing)(xing)電(dian)(dian)(dian)(dian)阻(zu)(zu)不和睦格(ge),應(ying)即(ji)使(shi)(shi)更改(gai)(gai)有缺陷(xian)的繞(rao)阻(zu)(zu)絕(jue)緣性(xing)(xing)(xing)帶(dai)電(dian)(dian)(dian)(dian)阻(zu)(zu)性(xing)(xing)(xing)電(dian)(dian)(dian)(dian)阻(zu)(zu)或更改(gai)(gai)繞(rao)阻(zu)(zu),以提升風(feng)能發三相電(dian)(dian)(dian)(dian)動機(ji)的選擇生(sheng)命(ming)周期。
(5)變頻(pin)(pin)電動機內部的進人不(bu)銹鋼異(yi)物(wu)感,在維修(xiu)保養變頻(pin)(pin)電動機后謹防(fang)將不(bu)銹鋼物(wu)品、器件或器具遺失到(dao)定子膛中;綁緊定子的綁扎(zha)線、防(fang)松(song)螺栓跨(kua)中器件,以不(bu)至于有是因為離心法力意(yi)義而脫落。
(6)過大額(e)定電壓(ya)穿透(tou):
①電纜線倍受被雷(lei)擊,而防雷(lei)保(bao)護的不健(jian)全(quan)。應(ying)健(jian)全(quan)防雷(lei)保(bao)護的設施管理。
②誤(wu)實操,有此(ci)滿載(zai)時,將(jiang)調速(su)減速(su)機電(dian)流電(dian)壓升得過(guo)高。應從緊按實操導則對調速(su)減速(su)機來(lai)升壓,阻止(zhi)誤(wu)實操。
③高(gao)壓電(dian)機組織結(jie)構過(guo)(guo)線電(dian)流,分為操作使用過(guo)(guo)線電(dian)流、弧(hu)光一定(ding)接(jie)地過(guo)(guo)線電(dian)流團結(jie)振過(guo)(guo)線電(dian)流等,應增(zeng)進(jin)繞阻(zu)接(jie)地帶有效防范性沖擊試驗,不能顯示和(he)去掉(diao)定(ding)子繞阻(zu)接(jie)地帶中(zhong)具有的通病。
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