18.5KW運行電(dian)(dian)流(liu)(liu)算36A吧，那(nei)么(me)直(zhi)接啟動(dong)(dong)的(de)(de)(de)啟動(dong)(dong)電(dian)(dian)流(liu)(liu)按5倍(bei)來(lai)算，也是(shi)160A吧，160A的(de)(de)(de)短時(shi)間(jian)可能(neng)(neng)會(hui)給電(dian)(dian)網造成很嚴重的(de)(de)(de)后果，也許(xu)會(hui)跳(tiao)閘，電(dian)(dian)壓不足，燒(shao)毀(hui)變壓器，功率小一(yi)點啟動(dong)(dong)電(dian)(dian)流(liu)(liu)就小了(le)很多，按照常理來(lai)說的(de)(de)(de)話(hua)。15KW以上就應該是(shi)星三(san)角了(le)，超過了(le)45KW用星三(san)角可能(neng)(neng)都不能(neng)(neng)達到要求(qiu)了(le)，啟動(dong)(dong)電(dian)(dian)流(liu)(liu)太大(da)了(le)也會(hui)損壞電(dian)(dian)機，線圈如(ru)果是(shi)3mm的(de)(de)(de)話(hua)，那(nei)么(me)啟動(dong)(dong)是(shi)，能(neng)(neng)承受160A的(de)(de)(de)電(dian)(dian)流(liu)(liu)嗎，18.5KW以上的(de)(de)(de)電(dian)(dian)機，啟動(dong)(dong)時(shi)間(jian)最少(shao)3S，3S的(de)(de)(de)時(shi)間(jian)，能(neng)(neng)頂得住不哇
1.當負載對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)矩無嚴格(ge)要(yao)(yao)(yao)(yao)求又要(yao)(yao)(yao)(yao)限制電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)機(ji)(ji)(ji)(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)且(qie)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)滿足380V/Δ接線(xian)條件才能(neng)采(cai)用(yong)(yong)星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)方法(fa)；2.該方法(fa)是(shi)：在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)接成(cheng)星(xing)(xing)(xing)(xing)型(xing)接線(xian),當電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)成(cheng)功(gong)后(hou)再將(jiang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)改接成(cheng)三(san)角(jiao)型(xing)接線(xian)（通過(guo)雙投開關(guan)迅速切換）；3.因電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)成(cheng)正比,此(ci)時電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網提(ti)供(gong)的(de)(de)(de)(de)(de)(de)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)只(zhi)有全電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)(de)1/3 ，但啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)矩也只(zhi)有全電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)矩的(de)(de)(de)(de)(de)(de)1/3。星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，屬降(jiang)壓(ya)(ya)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)他是(shi)以(yi)(yi)犧牲功(gong)率為(wei)代價來換取(qu)降(jiang)低啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)來實(shi)現(xian)的(de)(de)(de)(de)(de)(de)。所(suo)以(yi)(yi)不能(neng)一(yi)(yi)概(gai)而(er)以(yi)(yi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)功(gong)率的(de)(de)(de)(de)(de)(de)大(da)小來確定是(shi)否(fou)需(xu)采(cai)用(yong)(yong)星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，還的(de)(de)(de)(de)(de)(de)看是(shi)什么(me)樣的(de)(de)(de)(de)(de)(de)負載，一(yi)(yi)般(ban)在(zai)需(xu)要(yao)(yao)(yao)(yao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時負載輕運行時負載重尚(shang)可采(cai)用(yong)(yong)星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，一(yi)(yi)般(ban)情況下鼠籠(long)型(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)是(shi)運行電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)(de)5—7倍，而(er)對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)要(yao)(yao)(yao)(yao)求一(yi)(yi)般(ban)是(shi)正負10%（我記憶中）為(wei)了不形成(cheng)對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)網電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)過(guo)大(da)的(de)(de)(de)(de)(de)(de)沖擊所(suo)以(yi)(yi)要(yao)(yao)(yao)(yao)采(cai)用(yong)(yong)星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，一(yi)(yi)般(ban)要(yao)(yao)(yao)(yao)求在(zai)鼠籠(long)型(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)功(gong)率超過(guo)變壓(ya)(ya)器(qi)額(e)定功(gong)率的(de)(de)(de)(de)(de)(de)10%時就要(yao)(yao)(yao)(yao)采(cai)用(yong)(yong)星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。只(zhi)有鼠籠(long)型(xing)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)才采(cai)用(yong)(yong)星(xing)(xing)(xing)(xing)三(san)角(jiao)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。一(yi)(yi)家(jia)之言,姑(gu)且(qie)聽之.本人在(zai)實(shi)際使用(yong)(yong)過(guo)程中,發現(xian)需(xu)星(xing)(xing)(xing)(xing)三(san)角(jiao)降(jiang)壓(ya)(ya)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)從11KW開始就有需(xu)要(yao)(yao)(yao)(yao)的(de)(de)(de)(de)(de)(de),如(ru)風(feng)機(ji)(ji)(ji)(ji)(ji)、在(zai)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時11KW電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)在(zai)7-9倍(100)A左(zuo)(zuo)右,按正常配(pei)置的(de)(de)(de)(de)(de)(de)熱(re)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)根本啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)不了,（關(guan)風(feng)門也沒用(yong)(yong)）熱(re)繼電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)器(qi)配(pei)大(da)了又起不了保護(hu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)作(zuo)用(yong)(yong)，所(suo)以(yi)(yi)建議用(yong)(yong)降(jiang)壓(ya)(ya)啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)。而(er)在(zai)一(yi)(yi)些啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)負荷較小的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)上，由于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)到達恒速時間短(duan)，啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)時電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)沖擊影響較小，所(suo)以(yi)(yi)在(zai)30KW左(zuo)(zuo)右的(de)(de)(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)機(ji)(ji)(ji)(ji)(ji)，選用(yong)(yong)1.5倍額(e)定電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)的(de)(de)(de)(de)(de)(de)斷路器(qi)直(zhi)接啟(qi)(qi)(qi)(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，長期工作(zuo)一(yi)(yi)點問題都(dou)沒有。
是pcl控制的(de)星三角啟動，啟動時電壓降(jiang)的(de)多繼電器吸(xi)合不好(hao)，接(jie)觸器打火怎么處
可以裝個變頻器
45KW的電(dian)動機用什么方式啟動好
最好：使用(yong)變(bian)(bian)頻(pin)器(qi)變(bian)(bian)頻(pin)降壓啟(qi)(qi)(qi)動(dong)，可變(bian)(bian)速，安(an)全。其次：使用(yong)軟啟(qi)(qi)(qi)動(dong)器(qi)啟(qi)(qi)(qi)動(dong)，安(an)全啟(qi)(qi)(qi)動(dong)。最次：星(xing)角(jiao)啟(qi)(qi)(qi)動(dong)。追問用(yong)多大的(de)空開(kai)和接(jie)(jie)觸器(qi) 回答(da)1.變(bian)(bian)頻(pin)，斷(duan)路器(qi)：100A塑殼(ke)，接(jie)(jie)觸器(qi)：95A。2.軟啟(qi)(qi)(qi)，斷(duan)路器(qi)：100A塑殼(ke)，接(jie)(jie)觸器(qi)：95A。3.星(xing)角(jiao)，斷(duan)路器(qi)：100A塑殼(ke)，接(jie)(jie)觸器(qi)：2個(ge)(ge)95A和1個(ge)(ge)65A的(de)。這是好牌子(zi)（施(shi)耐德、ABB等）的(de)選型，其他牌（正泰、德力(li)西、各種人(ren)民等）都大一檔(dang)或者(zhe)選擇性的(de)乘以1.2-1.5/
