來源：力建數控母線機、母線加工機、銅排加工機、母排加工機生產廠家    責任(ren)編輯：01顧問(wen)

    母排加(jia)工(gong)機的(de)(de)油(you)溫(wen)故(gu)障的(de)(de)產生是由母線加(jia)工(gong)機油(you)溫(wen)表(biao)(biao)指(zhi)示(shi)的(de)(de)是變(bian)壓器(qi)頂層(ceng)油(you)溫(wen),運(yun)行中的(de)(de)油(you)溫(wen)監視點為(wei)85℃,溫(wen)升(sheng)是指(zhi)變(bian)壓器(qi)頂層(ceng)油(you)溫(wen)減去環境溫(wen)度(du),運(yun)行中變(bian)壓器(qi)在(zai)外溫(wen)40℃時,其溫(wen)升(sheng)不得超(chao)過55℃,運(yun)行中以(yi)頂層(ceng)油(you)溫(wen)為(wei)準,溫(wen)升(sheng)是參考數據。若變(bian)壓器(qi)在(zai)同等條(tiao)件下(環境溫(wen)度(du)、負荷(he)、油(you)位等),油(you)溫(wen)比平時高出10℃或(huo)負荷(he)不變(bian)但溫(wen)度(du)不斷(duan)上升(sheng),并且(qie)冷卻裝置正常運(yun)行,則認為(wei)變(bian)壓器(qi)發(fa)生內部故(gu)障(應(ying)注意溫(wen)度(du)表(biao)(biao)有無(wu)誤差或(huo)失(shi)靈(ling))。

    我(wo)國(guo)變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)溫(wen)(wen)(wen)升標準,均以(yi)(yi)環境溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)40℃為準,故(gu)(gu)(gu)(gu)變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)頂(ding)層油(you)溫(wen)(wen)(wen)一般不(bu)得超(chao)過40℃+55℃=95℃。頂(ding)層油(you)溫(wen)(wen)(wen)如超(chao)過95℃,其內(nei)部(bu)線(xian)(xian)圈(quan)(quan)的(de)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)就(jiu)要(yao)超(chao)過線(xian)(xian)圈(quan)(quan)絕(jue)緣物(wu)的(de)耐熱(re)(re)強度(du)(du)(du)(du)(du)(du),為了使(shi)絕(jue)緣不(bu)致(zhi)過快老化,所以(yi)(yi)規定變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)頂(ding)層油(you)溫(wen)(wen)(wen)的(de)監(jian)視應(ying)控制在85℃以(yi)(yi)下。導致(zhi)變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)異(yi)(yi)常(chang)(chang)的(de)原因(yin)內(nei)部(bu)故(gu)(gu)(gu)(gu)障引起溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)異(yi)(yi)常(chang)(chang)變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)內(nei)部(bu)故(gu)(gu)(gu)(gu)障如匝間(jian)短路或層間(jian)短路,線(xian)(xian)圈(quan)(quan)對圍屏放(fang)電,內(nei)部(bu)引線(xian)(xian)接頭發(fa)熱(re)(re),鐵芯(xin)多點接地使(shi)渦流(liu)增大過熱(re)(re),零序(xu)不(bu)平衡電流(liu)等漏磁通與鐵件油(you)箱形成回路而(er)發(fa)熱(re)(re)等因(yin)素引起變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)異(yi)(yi)常(chang)(chang)時(shi),還(huan)(huan)將伴隨著瓦斯或差動(dong)保護動(dong)作,故(gu)(gu)(gu)(gu)障嚴(yan)重時(shi)還(huan)(huan)可能使(shi)防爆(bao)管或壓(ya)(ya)(ya)力釋放(fang)閥噴油(you),這時(shi)變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)應(ying)停用檢查。冷(leng)卻器(qi)(qi)(qi)(qi)不(bu)正(zheng)常(chang)(chang)運(yun)行或發(fa)生故(gu)(gu)(gu)(gu)障如潛油(you)泵停運(yun),風扇(shan)損壞,散熱(re)(re)管道積垢,冷(leng)卻效率不(bu)良(liang),散熱(re)(re)器(qi)(qi)(qi)(qi)閥門沒有打開等原因(yin)引起溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)異(yi)(yi)常(chang)(chang)。應(ying)及時(shi)對冷(leng)卻系統進(jin)行維護和(he)沖洗或投人備用冷(leng)卻器(qi)(qi)(qi)(qi),否(fou)則就(jiu)要(yao)調整變(bian)(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)負荷。溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)指(zhi)示(shi)(shi)器(qi)(qi)(qi)(qi)有誤差或指(zhi)示(shi)(shi)失(shi)靈,應(ying)更換(huan)溫(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)表。

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