電(dian)(dian)(dian)(dian)氣設備在運行過程當中(zhong)發生(sheng)接地(di)(di)(di)妨礙時，電(dian)(dian)(dian)(dian)流(liu)將(jiang)通(tong)過接地(di)(di)(di)體向(xiang)地(di)(di)(di)下舉行飄泊(bo)。實驗證(zheng)明(ming)，通(tong)過接地(di)(di)(di)體后，電(dian)(dian)(dian)(dian)位(wei)為(wei)零(ling)(ling)，以(yi)是(shi)說(shuo)，凡(fan)通(tong)過接地(di)(di)(di)體的不論(lun)什(shen)么電(dian)(dian)(dian)(dian)位(wei)均為(wei)零(ling)(ling)。在施用(yong)電(dian)(dian)(dian)(dian)能時，人(ren)為(wei)操作，節制(zhi)所有的接觸體接了地(di)(di)(di)，不論(lun)什(shen)么環境下電(dian)(dian)(dian)(dian)位(wei)為(wei)零(ling)(ling)，施用(yong)電(dian)(dian)(dian)(dian)達到安(an)全(quan)。以(yi)是(shi)接地(di)(di)(di)的效用(yong)是(shi)保護人(ren)身(shen)和設備的安(an)全(quan)。