如何對發電機軸電壓進行測量?
如何對發電機軸電壓進行測量?
軸電壓的測量
U1: 勵磁端軸承支架對地電壓
U2:大軸兩端電壓
U3:汽端軸對地電壓
測(ce)(ce)(ce)(ce)(ce)量(liang)時(shi)(shi)(shi)先測(ce)(ce)(ce)(ce)(ce)U2,再測(ce)(ce)(ce)(ce)(ce)U1勵(li)磁端軸(zhou)承(cheng)支架對地電(dian)(dian)壓(ya)。測(ce)(ce)(ce)(ce)(ce)量(liang)U1時(shi)(shi)(shi)應(ying)把軸(zhou)承(cheng)外殼(ke)與軸(zhou)用(yong)(yong)銅刷(shua)短路,否則(ze),因(yin)軸(zhou)承(cheng)與軸(zhou)之(zhi)間(jian)的油膜電(dian)(dian)阻影響測(ce)(ce)(ce)(ce)(ce)量(liang)結果.通(tong)常U1=U2,若U1與U2相差(cha)10%以上(shang),則(ze)表(biao)示絕(jue)緣(yuan)墊等(deng)絕(jue)緣(yuan)不(bu)良(liang).絕(jue)緣(yuan)墊等(deng)絕(jue)緣(yuan)不(bu)良(liang)時(shi)(shi)(shi),U1<U2。測(ce)(ce)(ce)(ce)(ce)量(liang)時(shi)(shi)(shi)使(shi)用(yong)(yong)3∽10V交流電(dian)(dian)壓(ya)表(biao),若無此表(biao),可經適(shi)當升壓(ya)變將此電(dian)(dian)壓(ya)升高(gao)后,用(yong)(yong)一(yi)般電(dian)(dian)壓(ya)表(biao)測(ce)(ce)(ce)(ce)(ce)量(liang)。測(ce)(ce)(ce)(ce)(ce)量(liang)接(jie)(jie)線必須接(jie)(jie)有專用(yong)(yong)電(dian)(dian)刷(shua),且電(dian)(dian)刷(shua)上(shang)應(ying)用(yong)(yong)長達(da)300mm以上(shang)絕(jue)緣(yuan)手柄。測(ce)(ce)(ce)(ce)(ce)量(liang)軸(zhou)電(dian)(dian)壓(ya)時(shi)(shi)(shi)應(ying)采用(yong)(yong)同(tong)一(yi)可靠接(jie)(jie)地點(dian)作為基準點(dian)。測(ce)(ce)(ce)(ce)(ce)量(liang)時(shi)(shi)(shi),應(ying)使(shi)發電(dian)(dian)機保持(chi)額(e)定(ding)電(dian)(dian)壓(ya),并分別(bie)在額(e)定(ding)負(fu)載,0.5額(e)定(ding)負(fu)載,空載下測(ce)(ce)(ce)(ce)(ce)量(liang)。
常州(zhou)勤創機(ji)械設備(bei)有限公(gong)司是專業的電機軸和異型軸廠家,其五金件加工水(shui)平高,歡迎有意者前來咨詢。