一(yi)、半自動電動起子

在達到設定扭力后不會自(zi)(zi)動(dong)(dong)(dong)剎車停止的起子(zi)，稱之為半自(zi)(zi)動(dong)(dong)(dong)電(dian)動(dong)(dong)(dong)起子(zi)。通常半自(zi)(zi)動(dong)(dong)(dong)設計為手按式(shi)。半自(zi)(zi)動(dong)(dong)(dong)有(you)分AC高壓直插式(shi)，與經過電(dian)源變壓為DC低壓式(shi)。

二、全自動電動起子

在達到(dao)設定扭力(li)后能夠完全自動(dong)(dong)剎車并停(ting)止(zhi)運轉的電動(dong)(dong)起子稱為(wei)全自動(dong)(dong)電動(dong)(dong)起子。全自動(dong)(dong)電動(dong)(dong)起子又分(fen)為(wei)AC高壓和DC低壓兩(liang)(liang)個系列，根據操作啟動(dong)(dong)模(mo)式(shi)(shi)的不(bu)同又分(fen)為(wei)手按式(shi)(shi)和下壓式(shi)(shi)兩(liang)(liang)種。

高壓(ya)(ya)系列電(dian)動起(qi)(qi)子(zi)不需要(yao)單獨電(dian)源供應器(qi)轉換電(dian)壓(ya)(ya)，直(zhi)接與市(shi)電(dian)連接，操作快捷占用(yong)空間小(xiao)。低壓(ya)(ya)系列電(dian)動起(qi)(qi)子(zi)體積(ji)小(xiao)重量輕，由直(zhi)流馬(ma)達驅動，壽命長安全系數高。手(shou)按(an)(an)式(shi)電(dian)動起(qi)(qi)子(zi)操作啟(qi)(qi)動時只(zhi)需用(yong)手(shou)指(zhi)按(an)(an)住啟(qi)(qi)動杠(gang)桿(gan)，或(huo)壓(ya)(ya)板按(an)(an)鈕等(deng)。下壓(ya)(ya)式(shi)電(dian)動起(qi)(qi)子(zi)操作啟(qi)(qi)動時無需用(yong)手(shou)指(zhi)按(an)(an)住啟(qi)(qi)動杠(gang)桿(gan)，或(huo)壓(ya)(ya)板按(an)(an)鈕等(deng)，直(zhi)接對準工件壓(ya)(ya)下就可啟(qi)(qi)動。