44*1.5=66A,只能選(xuan)擇80A的(de)(de)交(jiao)流(liu)接觸(chu)器(qi)(qi)(qi),和45A的(de)(de)熱繼電(dian)器(qi)(qi)(qi),圖一的(de)(de)電(dian)動(dong)(dong)機保護(hu)器(qi)(qi)(qi)也需要選(xuan)擇電(dian)機的(de)(de)額(e)定(ding)用(yong)途直接起(qi)動(dong)(dong)類型磁力(li)起(qi)動(dong)(dong)器(qi)(qi)(qi) 3C證書(shu)編號(hao)CCC貨號(hao) 額(e)定(ding)電(dian)流(liu)150A額(e)定(ding)電(dian)壓(ya)380V 額(e)定(ding)絕(jue)緣電(dian)壓(ya)220V防(fang)護(hu)等(deng)級IP20 應(ying)用(yong)場景電(dian)能管理操作方式手動(dong)(dong) 是否可逆否以(yi)380V三相(xiang)4極(ji)75KW為例,其額(e)定(ding)電(dian)流(liu)約139A。因(yin)為是降(jiang)壓(ya)起(qi)動(dong)(dong),所以(yi)主接觸(chu)器(qi)(qi)(qi)和運行(xing)接觸(chu)器(qi)(qi)(qi)可用(yong)100A的(de)(de)交(jiao)流(liu)接觸(chu)器(qi)(qi)(qi),起(qi)動(dong)(dong)接觸(chu)器(qi)(qi)(qi)可用(yong)60A的(de)(de)接觸(chu)器(qi)(qi)(qi)。。

電(dian)動(dong)(dong)機(ji)能(neng)提供的(de)(de)功(gong)率范圍很大,從 毫瓦(wa)(wa)級到萬千(qian)瓦(wa)(wa)級。電(dian)動(dong)(dong)機(ji)的(de)(de)使用(yong)和控制非(fei)常方便,具有自起動(dong)(dong) 、加速、制動(dong)(dong)、反轉、掣 住等能(neng)力,能(neng)滿足各種運行要求電(dian)動(dong)(dong)機(ji)的(de)(de)工作效率較高,又(you)沒(mei)(mei)七十五千(qian)瓦(wa)(wa)啟(qi)(qi)動(dong)(dong)器帶(dai)七十五千(qian)瓦(wa)(wa)電(dian)機(ji)完(wan)(wan)全沒(mei)(mei)問(wen)題(ti),因為啟(qi)(qi)動(dong)(dong)器只是啟(qi)(qi)動(dong)(dong)用(yong)的(de)(de),啟(qi)(qi)動(dong)(dong)完(wan)(wan)畢可以切換到接觸器運行了,只用(yong)十幾秒沒(mei)(mei)事！但是你前邊用(yong)的(de)(de)變頻器完(wan)(wan)全沒(mei)(mei)有必要用(yong)對于(yu)上(shang)例中(zhong)的(de)(de)37kW電(dian)機(ji),我們來校核它的(de)(de)起動(dong)(dong)判(pan)據：K_m =0.75+0.25frac{S}{P} =0.75+0.25t。

一個22KW的(de)(de)(de)電機(ji)要(yao)直接(jie)啟動啟動電流(liu)多大需(xu)要(yao)選擇多大的(de)(de)(de)空開和接(jie)觸器 22kW電機(ji)需(xu)要(yao)直接(jie)起動,啟動電流(liu)為45 A。 電機(ji)電流(liu)為I=P/(1732 UCOS)=22(1732×0,38×0,75)=啟動電流(liu)的(de)(de)(de)大小(xiao)又有瞬間(jian)值、啟動期間(jian)平(ping)均(jun)值的(de)(de)(de)區(qu)別。總之,估算時(shi)以(yi)電機(ji)額定(ding)電流(liu)的(de)(de)(de)35倍作啟動平(ping)均(jun)電流(liu)值是(shi)可(ke)以(yi)的(de)(de)(de)。對于常見的(de)(de)(de)220V單相電機(ji)按一千(qian)瓦5安,380V線路遠得用(yong)3550平(ping)方毫米的(de)(de)(de)多股銅芯(xin)線,注意70千(qian)瓦的(de)(de)(de)電機(ji)起動時(shi)要(yao)空載！要(yao)星型(xing)轉(zhuan)三角型(xing)起動！！。

75千(qian)瓦電(dian)(dian)(dian)機(ji)應(ying)配(pei)多大起動箱,3、 起動電(dian)(dian)(dian)機(ji),觀察泵運行是否正(zheng)確。 4、 調節出口閥(fa)開度(du)以(yi)所(suo)需工(gong)(gong)況(kuang),如用(yong)戶在泵出口處裝有 流量表(biao)(biao) 或壓(ya)力表(biao)(biao),應(ying)通過調節出口閥(fa)門開度(du)使(shi)泵在性能(neng)(neng)參數表(biao)(biao)所(suo)列(lie)的(de)額空(kong)氣開關配(pei)250安,75KW電(dian)(dian)(dian)機(ji)的(de)額定電(dian)(dian)(dian)流為150A左右,電(dian)(dian)(dian)流1：1.45＜1小時(shi),跳閘適合,啟(qi)動形式選用(yong)自耦變壓(ya)器(qi)降壓(ya),以(yi)您好親親線路損耗(hao),75KW電(dian)(dian)(dian)機(ji)少需配(pei)120KVA變壓(ya)囂 親需要200KVA的(de)變壓(ya)器(qi) 100kva的(de)變壓(ya)器(qi)是可以(yi)帶動75kw電(dian)(dian)(dian)動機(ji)工(gong)(gong)作的(de)。只是電(dian)(dian)(dian)動機(ji)不能(neng)(neng)直接起動,因為普通異步電(dian)(dian)(dian)動機(ji)。

46、并勵直流(liu)電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)的(de)(de)起動(dong)(dong)轉矩(ju)較大(da)(da),過載能力強,但空載時會有(you)(you)"飛(fei)車"危險。 (×) 47、根據直流(liu)電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)(de)電(dian)(dian)(dian)(dian)樞反(fan)應結果,應使主(zhu)磁極與換向(xiang)極的(de)(de)交替(ti)排列關系為逆著 電(dian)(dian)(dian)(dian)機(ji)(ji)旋轉方向(xiang)。(75×1000=75000÷380V=197安,加上瞬間啟(qi)動(dong)(dong)電(dian)(dian)(dian)(dian)流(liu)建議少用(yong)(yong)250安的(de)(de)接觸器(qi),望采納電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)穩(wen)(wen)(wen)壓用(yong)(yong)穩(wen)(wen)(wen)壓器(qi),220v7.5個千瓦的(de)(de)電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)用(yong)(yong)多大(da)(da)的(de)(de)穩(wen)(wen)(wen)壓器(qi)?7.5kw電(dian)(dian)(dian)(dian)機(ji)(ji)需要(yao)(yao)用(yong)(yong)到(dao)20kva穩(wen)(wen)(wen)壓器(qi),有(you)(you)些(xie)客戶(hu)不明白為什么(me)要(yao)(yao)用(yong)(yong)到(dao)這(zhe)么(me)大(da)(da)呢(ni)?小一點不可以嗎?下(xia)面力威(wei)為大(da)(da)家普及下(xia)關于(yu)用(yong)(yong)多大(da)(da)穩(wen)(wen)(wen)壓。

75千(qian)瓦電(dian)(dian)(dian)機(ji)(ji)(ji)應配多大起動箱,75KW電(dian)(dian)(dian)動機(ji)(ji)(ji),工作電(dian)(dian)(dian)流是150A。1、理(li)論公式:I=P/(1.732*U*cosΦ)（I電(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)流；P電(dian)(dian)(dian)機(ji)(ji)(ji)功率 75Kw；U電(dian)(dian)(dian)機(ji)(ji)(ji)電(dian)(dian)(dian)壓 380V；星三角啟動需要配3個接(jie)(jie)觸器(qi)才能(neng)正常運(yun)行,一(yi)個主接(jie)(jie)觸器(qi),電(dian)(dian)(dian)機(ji)(ji)(ji)帶重負載(zai)少要配400A的(de)(de)(de),輕負載(zai)200A夠了(le),另(ling)外(wai)兩個輔助接(jie)(jie)觸器(qi)比主接(jie)(jie)觸器(qi)小一(yi)號行了(le)。 假設3、軟(ruan)請(qing)問一(yi)下(xia),75KW的(de)(de)(de)電(dian)(dian)(dian)機(ji)(ji)(ji)用的(de)(de)(de)是星三角啟動,交流接(jie)(jie)觸器(qi)用的(de)(de)(de)85A(一(yi)個),客(ke)戶說小了(le)少要150A(一(yi)個)。我問公司的(de)(de)(de)技術人員,答(da)復說是星。

75千(qian)瓦電(dian)(dian)(dian)機采(cai)用90千(qian)瓦變頻(pin)啟動(dong)(dong)器：采(cai)用變頻(pin)器運(yun)轉,隨著電(dian)(dian)(dian)機的加速(su)相(xiang)(xiang)應(ying)提高頻(pin)率(lv)和電(dian)(dian)(dian)壓,起(qi)動(dong)(dong)電(dian)(dian)(dian)流(liu)被(bei)限制(zhi)在150%額(e)(e)定電(dian)(dian)(dian)流(liu)以下(根據(ju)機種(zhong)不同,為(wei)125%~200%)。用工頻(pin)電(dian)(dian)(dian)三(san)相(xiang)(xiang)380伏75千(qian)瓦電(dian)(dian)(dian)機額(e)(e)定電(dian)(dian)(dian)流(liu)約150A,直接啟動(dong)(dong)瞬(shun)時電(dian)(dian)(dian)流(liu)約額(e)(e)定電(dian)(dian)(dian)流(liu)的6倍(bei)。目(mu)前的應(ying)用范圍(wei)是交流(liu)380V(也可(ke)660V),電(dian)(dian)(dian)機功率(lv)從(cong)幾千(qian)瓦到800kW。軟(ruan)(ruan)起(qi)動(dong)(dong)器特別適(shi)用于各種(zhong)泵(beng)類(lei)負載(zai)或(huo)風機類(lei)負載(zai),需要軟(ruan)(ruan)起(qi)動(dong)(dong)與(yu)軟(ruan)(ruan)停車的場合。 67.軟(ruan)(ruan)起(qi)動(dong)(dong)與(yu)傳統減。

160A的(de)(de)(de),因(yin)(yin)為(wei)(wei)75KW的(de)(de)(de)電(dian)(dian)機額定(ding)電(dian)(dian)流是150A左右,降壓起(qi)(qi)動(dong)的(de)(de)(de)電(dian)(dian)流在350A左右,正常工作時兩個接觸的(de)(de)(de)電(dian)(dian)流是80A左右,一般(ban)來(lai)說,接觸器(qi)按額定(ding)電(dian)(dian)流的(de)(de)(de)2倍(bei)來(lai)選擇,所以(yi)(陜西智能籠型水(shui)阻柜(ju)平(ping)均價格(ge)),安徽(hui)頻敏啟(qi)動(dong)柜(ju)因(yin)(yin)為(wei)(wei)結構簡單,安徽(hui)頻敏起(qi)(qi)動(dong)柜(ju)價格(ge)便(bian)宜,安徽(hui)起(qi)(qi)動(dong)箱維護方便(bian),安徽(hui)水(shui)泵電(dian)(dian)機配電(dian)(dian)柜(ju)啟(qi)動(dong)柜(ju)在市場上應用較多,安徽(hui)起(qi)(qi)動(dong)柜(ju)市場容量目(mu)前(qian)市場上大部分的(de)(de)(de)大功率(lv)電(dian)(dian)壓380V,75kw功率(lv)電(dian)(dian)流約(yue)150A。空開的(de)(de)(de)額定(ding)電(dian)(dian)流一般(ban)按照負(fu)載(zai)電(dian)(dian)流的(de)(de)(de)1.52倍(bei)左右選擇。因(yin)(yin)為(wei)(wei)電(dian)(dian)動(dong)機是動(dong)力(li)負(fu)載(zai),有沖擊(ji)。

相信目前很(hen)多小(xiao)(xiao)伙(huo)伴對(dui)于(yu)0.75kw電(dian)(dian)機額定電(dian)(dian)流多大(da)方面的(de)(de)知識都(dou)比較(jiao)想要了(le)解,那么吉女士為大(da)家收集了(le)一些關于(yu)75千瓦(wa)電(dian)(dian)機工作電(dian)(dian)流相關的(de)(de)信息(xi)分享(xiang)給大(da)家,先啟(qi)(qi)(qi)動(dong)(dong)無(wu)啟(qi)(qi)(qi)動(dong)(dong)裝置的(de)(de)30KW電(dian)(dian)機。因(yin)為先啟(qi)(qi)(qi)動(dong)(dong)30KW電(dian)(dian)機后,占用電(dian)(dian)網的(de)(de)比例較(jiao)小(xiao)(xiao),留給75KW電(dian)(dian)機的(de)(de)裕量較(jiao)大(da)。再者75KW有啟(qi)(qi)(qi)動(dong)(dong)裝置,啟(qi)(qi)(qi)動(dong)(dong)電(dian)(dian)流可能比30KW電(dian)(dian)機啟(qi)(qi)(qi)電(dian)(dian)流還小(xiao)(xiao),兩臺75kw軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)柜(ju)(ju)(ju) CJ175kw軟(ruan)(ruan)起(qi)動(dong)(dong)柜(ju)(ju)(ju) CJ175/3 電(dian)(dian)機啟(qi)(qi)(qi)動(dong)(dong)控(kong)制柜(ju)(ju)(ju) 產(chan)品(pin)概(gai)述 選電(dian)(dian)機軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)器(qi)(qi)、軟(ruan)(ruan)起(qi)動(dong)(dong)柜(ju)(ju)(ju)、在線式軟(ruan)(ruan)起(qi)動(dong)(dong)柜(ju)(ju)(ju)、自耦(ou)減壓(ya)起(qi)動(dong)(dong)柜(ju)(ju)(ju)、自耦(ou)變壓(ya)器(qi)(qi)、交(jiao)流接觸器(qi)(qi),產(chan)品(pin)。

簡捷的(de)方式是用(yong)星三(san)角起(qi)(qi)動(dong)(dong)比較(jiao)好,因為20千(qian)瓦以(yi)上電(dian)(dian)(dian)(dian)機(ji)(ji)必(bi)須使用(yong)降(jiang)壓(ya)起(qi)(qi)動(dong)(dong),而星三(san)角起(qi)(qi)動(dong)(dong)比較(jiao)方便。璩朱: 75千(qian)瓦電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)應(ying)配多(duo)(duo)大(da)變(bian)頻(pin)啟(qi)動(dong)(dong)器 尖山區不平(ping): ___ 根據電(dian)(dian)(dian)(dian)機(ji)(ji)電(dian)(dian)(dian)(dian)流選擇,一般也是75KW,除非電(dian)(dian)(dian)(dian)機(ji)(ji)效率(lv)很低,電(dian)(dian)(dian)(dian)流大(da),那選更大(da)的(de)璩朱: 我工廠的(de)水泵60kw的(de)功率(lv)用(yong)多(duo)(duo)大(da)的(de)電(dian)(dian)(dian)(dian)纜(lan):用(yong)55平(ping)方的(de)電(dian)(dian)(dian)(dian)纜(lan)。電(dian)(dian)(dian)(dian)功率(lv)計算公式: =UI。 55千(qian)瓦電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)出多(duo)(duo)少銅? 55千(qian)瓦的(de)電(dian)(dian)(dian)(dian)動(dong)(dong)機(ji)(ji)要(yao)(yao)出多(duo)(duo)少銅,那是要(yao)(yao)看(kan)是多(duo)(duo)少極的(de),如果是55千(qian)瓦三(san)相(xiang)二極電(dian)(dian)(dian)(dian)機(ji)(ji)的(de)話要(yao)(yao)出47一49。