一、軟啟動器是什么
軟啟動器是一(yi)種(zhong)集電機(ji)軟(ruan)起動、軟(ruan)停車、輕載節能和多種(zhong)保護功能于一(yi)體的(de)電機(ji)控制裝置(zhi)。
不(bu)僅(jin)實現(xian)在(zai)整個起(qi)動過(guo)程(cheng)中無沖擊而(er)平滑(hua)的起(qi)動電機,而(er)且可(ke)根(gen)據電動機負(fu)載(zai)的特性來調節起(qi)動過(guo)程(cheng)中的參(can)數,如限流值(zhi)、起(qi)動時間等。
二、軟啟動器是在線的好還是旁路的好
市場上(shang)經(jing)常能遇到在線軟(ruan)(ruan)啟(qi)動器(qi),那么在線軟(ruan)(ruan)啟(qi)動器(qi)和普通的旁路(lu)軟(ruan)(ruan)啟(qi)動器(qi)有(you)什么區別(bie),只(zhi)有(you)知(zhi)道區別(bie)才能知(zhi)道哪個更好(hao)。
在線軟啟(qi)(qi)動(dong)器是指軟啟(qi)(qi)動(dong)器啟(qi)(qi)動(dong)完成之后沒有(you)旁路也不用切(qie)換旁路,主(zhu)回路晶閘管(guan)一直在線運行,所以叫在線軟啟(qi)(qi)動(dong)器。
正常情況下,一般軟啟動器啟動完成電機都會(hui)甩到旁路接觸(chu)器,而接觸(chu)器是(shi)和軟(ruan)啟(qi)動器三(san)相進出線并(bing)聯的。也就是(shi)啟(qi)動完成負(fu)載電機是(shi)通過接觸(chu)器直接接到三(san)相電源上的。
從(cong)安裝角(jiao)度上說(shuo),在線(xian)軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)少了(le)一個接觸(chu)器(qi)(qi)(qi)(qi),一次(ci)線(xian)和(he)二次(ci)線(xian)更(geng)簡單,尤其功率大的起動(dong)(dong)(dong)(dong)柜(ju),在線(xian)式(shi)更(geng)省(sheng)成(cheng)本。而旁(pang)路軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)就(jiu)沒這(zhe)些有點了(le)。但是(shi)畢竟在線(xian)式(shi)軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)可(ke)控硅(gui)是(shi)一直工作(zuo)的,而旁(pang)路軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)只是(shi)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)瞬(shun)間可(ke)控硅(gui)在工作(zuo),啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)完成(cheng)是(shi)旁(pang)路接觸(chu)器(qi)(qi)(qi)(qi)運行(xing),所(suo)以來(lai)說(shuo),旁(pang)路軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)對晶閘管(guan)來(lai)說(shuo)更(geng)好,而晶閘管(guan)是(shi)軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)核心執(zhi)行(xing)器(qi)(qi)(qi)(qi)件(jian),要是(shi)晶閘管(guan)壞(huai)了(le)軟(ruan)(ruan)啟(qi)(qi)(qi)動(dong)(dong)(dong)(dong)器(qi)(qi)(qi)(qi)維(wei)修費用可(ke)不(bu)低。
一般重負載如球磨機、破碎機、深井泵等負載,頻繁啟動的場合都會選用旁路式軟啟動器,反之則用在線軟啟動器,如消防水泵。
所以兩者比(bi)較起來,并(bing)沒有(you)哪種更好(hao)(hao),合適的環境使用合適的儀器,這樣(yang)才是最好(hao)(hao)的。