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    直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)空(kong)(kong)(kong)載(zai)特性(xing)(xing)是指電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)空(kong)(kong)(kong)載(zai)時(shi)電(dian)(dian)(dian)(dian)(dian)(dian)樞電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)對(dui)轉(zhuan)速(su)(su)(su)的(de)干系(勵(li)(li)磁電(dian)(dian)(dian)(dian)(dian)(dian)流為額定(ding)(ding)(ding)值).空(kong)(kong)(kong)載(zai)試驗時(shi)應(ying)使電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)勵(li)(li)磁回路施以額定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)使勵(li)(li)磁繞組到達額定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)流，而給電(dian)(dian)(dian)(dian)(dian)(dian)樞電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)為額定(ding)(ding)(ding)值時(shi)測(ce)(ce)(ce)取電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)的(de)轉(zhuan)速(su)(su)(su)，而后連結(jie)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)在額定(ding)(ding)(ding)勵(li)(li)磁電(dian)(dian)(dian)(dian)(dian)(dian)流下變(bian)動(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)樞電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)測(ce)(ce)(ce)取其相應(ying)轉(zhuan)速(su)(su)(su)，電(dian)(dian)(dian)(dian)(dian)(dian) 樞電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，勵(li)(li)磁電(dian)(dian)(dian)(dian)(dian)(dian)流和(he)電(dian)(dian)(dian)(dian)(dian)(dian)樞電(dian)(dian)(dian)(dian)(dian)(dian)流.較高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)應(ying)過細不高(gao)出120％Uc.包(bao)管電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)轉(zhuan)速(su)(su)(su)不高(gao)出120％ne.測(ce)(ce)(ce)定(ding)(ding)(ding)直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)空(kong)(kong)(kong)載(zai)特性(xing)(xing)時(shi)應(ying)在其運轉(zhuan)肯定(ding)(ding)(ding)時(shi)間后再(zai)記錄儀表讀(du)數，因為這時(shi)軸(zhou)承和(he)勵(li)(li)磁繞組的(de)溫度才(cai)與事情昀雷劃一. 空(kong)(kong)(kong)載(zai)特性(xing)(xing)測(ce)(ce)(ce)定(ding)(ding)(ding)可根據(ju)測(ce)(ce)(ce)定(ding)(ding)(ding)的(de)轉(zhuan)速(su)(su)(su)，電(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)，電(dian)(dian)(dian)(dian)(dian)(dian)流值確定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian) 動(dong)(dong)機(ji)(ji)(ji)的(de)空(kong)(kong)(kong)載(zai)斲喪.有利于(yu)鑒(jian)定(ding)(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)(ji)的(de)裝(zhuang)置直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，直(zhi)(zhi)(zhi)流電(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)的(de)發展軸(zhou)承事情是否良好及查(cha)抄其控(kong)制性(xing)(xing)能(neng)。

    直(zhi)(zhi)流電(dian)(dian)(dian)(dian)機(ji)有(you)兩種運行(xing)(xing)方式:電(dian)(dian)(dian)(dian)動運行(xing)(xing)和(he)制動運行(xing)(xing).電(dian)(dian)(dian)(dian)機(ji)在運行(xing)(xing)的(de)時(shi)候,如果想要調(diao)整(zheng)直(zhi)(zhi)流電(dian)(dian)(dian)(dian)機(ji)速度,該(gai)怎么辦呢?下(xia)面就讓直(zhi)(zhi)流電(dian)(dian)(dian)(dian)機(ji)維修(xiu)公司和(he)大(da)(da)(da)家分享分享直(zhi)(zhi)流電(dian)(dian)(dian)(dian)機(ji)調(diao)速的(de)方法改變電(dian)(dian)(dian)(dian)區電(dian)(dian)(dian)(dian)壓(ya)U:由(you)額(e)定(ding)電(dian)(dian)(dian)(dian)壓(ya)向下(xia)調(diao)低,轉(zhuan)速也由(you)額(e)定(ding)轉(zhuan)速向下(xia)調(diao)低,調(diao)速范圍(wei)大(da)(da)(da)改變磁(ci)通量Φ( 即(ji)改變ke):改變激(ji)(ji)磁(ci)回路的(de)電(dian)(dian)(dian)(dian)阻可改變Φ.由(you)于激(ji)(ji)磁(ci)回路電(dian)(dian)(dian)(dian)感大(da)(da)(da),電(dian)(dian)(dian)(dian)氣時(shi)間常數大(da)(da)(da),調(diao)速快速性差,轉(zhuan)速只(zhi)能(neng)由(you)額(e)定(ding)轉(zhuan)速向上(shang)調(diao)高在電(dian)(dian)(dian)(dian)樞(shu)回路中串聯調(diao)節電(dian)(dian)(dian)(dian)阻.轉(zhuan)速只(zhi)能(neng)調(diao)低,銅耗(hao)大(da)(da)(da),不經濟