1.打開防爆風機電機接線盒蓋,用(yong)萬用(yong)表(biao)確認(ren)電機繞組無電壓。
2.在三(san)相引(yin)線(xian)(xian)做好標記后取下電源引(yin)線(xian)(xian),將電源端的三(san)相引(yin)線(xian)(xian)短接并(bing)接地,用白布保護好接頭(tou)。(注(zhu)意:拆(chai)卸前(qian)標記引(yin)線(xian)(xian))
3.防爆風機電機接線(xian)盒(he)蓋和引線(xian)密封套的密封應無老化裂紋。
4.檢查防爆(bao)風(feng)機(ji)電機(ji)接(jie)線盒應干(gan)燥,清理(li)盒內灰塵,并清理(li)端子(zi)氧化(hua)層。
5.防爆風機(ji)電機(ji)的(de)電機(ji)引線應無損壞和老(lao)化。
6.用搖表測量三相對地(di)(di)和相間絕(jue)緣電(dian)(dian)(dian)阻(zu)(電(dian)(dian)(dian)機接線盒(he)只引出三相電(dian)(dian)(dian)流線時只測量對地(di)(di)絕(jue)緣電(dian)(dian)(dian)阻(zu))和電(dian)(dian)(dian)源線對地(di)(di)絕(jue)緣電(dian)(dian)(dian)阻(zu):應不小于1mω,并記錄在表2中。
7.用雙臂電(dian)橋測(ce)量電(dian)機定子(zi)繞(rao)組(zu)的(de)三(san)相DC電(dian)阻,每相繞(rao)組(zu)的(de)DC電(dian)阻之差不應超過4%;也可測(ce)量導(dao)線間的(de)電(dian)阻,其差值不應超過2%,并記錄在相關(guan)資料中。
=========================================
德州(zhou)凱億 賈 2022.12.14
=========================================