廈門重力通機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)設(she)備有限公司取得防爆電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)安裝(zhuang)(zhuang)、修理(li)資(zi)格證書，承(cheng)(cheng)接(jie)國(guo)內、外大中型交(jiao)流、直(zhi)流、高低壓(ya)電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)，承(cheng)(cheng)接(jie)現場振動(dong)檢測，動(dong)平(ping)衡校正；現場機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)設(she)備安裝(zhuang)(zhuang)調試、維護(hu)、修理(li)、施工；橡塑類開煉機(ji)(ji)(ji)輥筒表面、軸承(cheng)(cheng)位(wei)修復(fu)(fu)(fu)，液(ye)壓(ya)缸修復(fu)(fu)(fu)，以及各(ge)類芯(xin)軸修復(fu)(fu)(fu)。提供FAG軸承(cheng)(cheng)，動(dong)、靜密封，電(dian)(dian)(dian)(dian)機(ji)(ji)(ji)配件等(deng)機(ji)(ji)(ji)電(dian)(dian)(dian)(dian)產(chan)品。

變頻器輸(shu)出端為什(shen)么要加輸(shu)出電抗器，它作用是(shi)什(shen)么?

變(bian)頻器輸(shu)出端增加輸(shu)出電(dian)抗器，是為了增加變(bian)頻器到電(dian)動機(ji)的(de)導(dao)線(xian)距離，輸(shu)出電(dian)抗器可以(yi)有效抑制變(bian)頻器的(de)IGBT開關時產生的(de)瞬間高(gao)電(dian)壓(ya)，減(jian)少此電(dian)壓(ya)對電(dian)纜絕緣(yuan)和電(dian)機(ji)的(de)不良影響(xiang)。

電(dian)(dian)抗器的(de)(de)主(zhu)要作(zuo)用：是用以限制電(dian)(dian)機(ji)連接電(dian)(dian)纜(lan)的(de)(de)容性充電(dian)(dian)電(dian)(dian)流及(ji)使電(dian)(dian)機(ji)繞(rao)組(zu)上的(de)(de)電(dian)(dian)壓上升率(lv)限制在540V/μs以內，它還用于鈍(dun)化變頻器輸出電(dian)(dian)壓(開關頻率(lv))的(de)(de)陡(dou)度，減(jian)少逆變器中(zhong)的(de)(de)功(gong)率(lv)元件(如IGBT)的(de)(de)擾動和沖(chong)擊(ji)。

廈門重力通(tong)機(ji)電(dian)(dian)設備有限公司取得防爆電(dian)(dian)機(ji)安(an)裝、修(xiu)理資格證書(shu)，承(cheng)(cheng)接國內(nei)、外(wai)大(da)中型(xing)交流、直流、高低(di)壓(ya)電(dian)(dian)機(ji)，承(cheng)(cheng)接現場振動(dong)檢測(ce)，動(dong)平衡校正(zheng)；現場機(ji)電(dian)(dian)設備安(an)裝調試(shi)、維護、修(xiu)理、施工(gong)；橡(xiang)塑類(lei)開煉機(ji)輥筒表面、軸承(cheng)(cheng)位修(xiu)復(fu)，液壓(ya)缸修(xiu)復(fu)，以(yi)及各類(lei)芯軸修(xiu)復(fu)。提供FAG軸承(cheng)(cheng)，動(dong)、靜密(mi)封，電(dian)(dian)機(ji)配件等機(ji)電(dian)(dian)產品。

電機空載或負載時，電流(liu)表指針不穩(wen)、擺動

1.繞組轉(zhuan)子電機(ji)有一(yi)相電刷(shua)接觸(chu)不(bu)良->>調整刷(shua)壓和改善電刷(shua)與集電環的接觸(chu)面

2.繞線轉(zhuan)子電(dian)機集電(dian)環短路裝置接(jie)觸不良(liang)->>檢修或更換短路裝置

3.籠型轉子開焊或(huo)斷(duan)條->>采用開口變壓器(qi)或(huo)其他方法檢測

4.繞線轉子一相斷路->>用檢驗燈、萬用表等檢查(cha)斷路處，排除故(gu)障

廈門重(zhong)力通機(ji)(ji)(ji)電(dian)(dian)(dian)設備有限公司取得防爆電(dian)(dian)(dian)機(ji)(ji)(ji)安裝(zhuang)、修理(li)資(zi)格證書，承(cheng)(cheng)接(jie)國內、外大中型交流、直(zhi)流、高低(di)壓電(dian)(dian)(dian)機(ji)(ji)(ji)，承(cheng)(cheng)接(jie)現(xian)場振動(dong)(dong)檢測，動(dong)(dong)平(ping)衡校正(zheng)；現(xian)場機(ji)(ji)(ji)電(dian)(dian)(dian)設備安裝(zhuang)調試、維(wei)護、修理(li)、施工；橡(xiang)塑類(lei)開煉機(ji)(ji)(ji)輥筒表面、軸(zhou)承(cheng)(cheng)位(wei)修復，液壓缸修復，以(yi)及(ji)各(ge)類(lei)芯軸(zhou)修復。提供FAG軸(zhou)承(cheng)(cheng)，低(di)壓電(dian)(dian)(dian)機(ji)(ji)(ji)維(wei)修，動(dong)(dong)、靜密封，電(dian)(dian)(dian)機(ji)(ji)(ji)配件等機(ji)(ji)(ji)電(dian)(dian)(dian)產(chan)品。

為(wei)什(shen)么要選(xuan)擇電機的功率？選(xuan)擇電機功率的意義何(he)在？

答：電(dian)(dian)(dian)(dian)機額(e)定功(gong)(gong)率(lv)(lv)的(de)(de)(de)選(xuan)擇(ze)是(shi)(shi)一個很重要(yao)很復雜(za)的(de)(de)(de)問題。負載(zai)時(shi)(shi)，如果電(dian)(dian)(dian)(dian)機額(e)定功(gong)(gong)率(lv)(lv)過(guo)大(da)，電(dian)(dian)(dian)(dian)機就經常處(chu)于(yu)輕載(zai)運(yun)行(xing)，電(dian)(dian)(dian)(dian)機本身的(de)(de)(de)容量得(de)不(bu)(bu)到充分的(de)(de)(de)發揮，變(bian)成“大(da)馬拉小(xiao)(xiao)(xiao)車(che)(che)”，同時(shi)(shi)電(dian)(dian)(dian)(dian)機運(yun)行(xing)效率(lv)(lv)低、性能(neng)不(bu)(bu)好，都會增加(jia)運(yun)行(xing)費用。反過(guo)來，電(dian)(dian)(dian)(dian)機額(e)定功(gong)(gong)率(lv)(lv)要(yao)求(qiu)得(de)小(xiao)(xiao)(xiao)，那便是(shi)(shi)“小(xiao)(xiao)(xiao)馬拉大(da)車(che)(che)”，電(dian)(dian)(dian)(dian)機電(dian)(dian)(dian)(dian)流超過(guo)額(e)定電(dian)(dian)(dian)(dian)流，電(dian)(dian)(dian)(dian)機內耗損加(jia)大(da)，效率(lv)(lv)低時(shi)(shi)小(xiao)(xiao)(xiao)事，重要(yao)的(de)(de)(de)是(shi)(shi)影響電(dian)(dian)(dian)(dian)機的(de)(de)(de)壽(shou)命，即使過(guo)載(zai)不(bu)(bu)多(duo)，電(dian)(dian)(dian)(dian)機的(de)(de)(de)壽(shou)命也(ye)會減少較多(duo)；過(guo)載(zai)較多(duo)，會破壞電(dian)(dian)(dian)(dian)機絕(jue)緣材(cai)料(liao)的(de)(de)(de)絕(jue)緣性能(neng)甚至燒毀。當然，電(dian)(dian)(dian)(dian)機額(e)定功(gong)(gong)率(lv)(lv)小(xiao)(xiao)(xiao)，可能(neng)根(gen)本就拖動不(bu)(bu)了負載(zai)，會使電(dian)(dian)(dian)(dian)機長時(shi)(shi)間處(chu)于(yu)啟(qi)動狀態(tai)而過(guo)熱損壞。所以應該嚴格按照電(dian)(dian)(dian)(dian)動車(che)(che)運(yun)行(xing)情況(kuang)選(xuan)定電(dian)(dian)(dian)(dian)機的(de)(de)(de)額(e)定功(gong)(gong)率(lv)(lv)。